280 results about "Heating oil" patented technology

The invention discloses a mold temperature control system and method for a large complex die-casting mold, and the system comprises a mold temperature controller, a mold temperature collection unit, an oil temperature machine, a heating oil pipeline, a cooling water pump, a cooling water tank, a cooling water pipeline, a fixed mold, a movable mold, a fixed mold plate, a movable mold plate, an injection charging barrel, an injection punch, a pipeline integrated board, and a cable. The mold temperature controller is responsible for managing mold temperature control equipment in a centralized mode, the mold temperature collecting unit is responsible for collecting the temperature of the fixed mold core, the movable mold core, the injection charging barrel and the injection punch, the oil temperature machine is responsible for conveying heating oil, and the cooling water pump is responsible for conveying high-pressure cooling water. Through software and hardware integrated control of the die temperature control equipment, the problems of dispersed layout, poor coordination, low working efficiency and the like of the die temperature control equipment are solved, the process management and control capability of die temperature control is improved, real-time and accurate control of the die temperature is realized, the defects of deformation, shrinkage cavities, looseness and the like of die castings are reduced, and the die casting quality is improved. And the size stability and the qualified rate of the large complex die casting are improved.

The invention discloses a detection device and a detection method for dissolved gas in insulating oil. The detection device comprises a rapid degassing module and an analysis module, the rapid degassing module comprises a sample bottle, a heating oil sample pool, a stirring structure, a high-purity gas storage tank and a cold trap; the sample bottle is used for injecting an insulating oil sample to be detected; the heating oil sample pool is used for heating the insulating oil sample in the sample bottle; the stirring structure is used for stirring the insulating oil sample in the sample bottle; the high-purity gas storage tank is used for introducing inert gas into the sample bottle and accelerating discharge of dissolved gas; the cold trap is used for enriching the mixed gas discharged from the sample bottle and selectively adsorbing and enriching the target gas to be detected; and the analysis module is used for detecting the gas analyzed from the cold trap. According to the detection device disclosed by the invention, the insulating oil sample to be detected is simultaneously subjected to heating stirring, gas purging replacement and cold trap enrichment, so that the dissolved gas in the insulating oil can be quickly removed, the degassing time is shortened to be within 5min, and the degassing treatment efficiency is greatly improved.

The invention relates to a method for treating shale oil crack wall surfaces by using carbon nanotubes to increase the heat transfer capacity of a reservoir, a plurality of horizontal wells are drilled from the ground, the horizontal sections of the horizontal wells form three parallel well rows, the uppermost well row and the lowermost well row are heating wells, and the middle well row is a production well. The fracturing fluid carrying the proppant is injected into the heating well and the production well with the displacement greatly exceeding the stratum absorption capacity, the bottom hole pressure is larger than the stratum fracture pressure, hydraulic fracturing is carried out, a tensional fracture area and a communication well group are generated, and meanwhile it is guaranteed that fractures are not closed after the proppant is filled. Under the condition that the pressure is lower than the formation fracture pressure, a weak acid solution is slowly squeezed into the heating well and the production well, the well wall and the crack wall face are treated, and a large number of corrosion micropores are formed. And under the condition that the pressure is lower than the stratum fracture pressure, a weak acid solution added with the carbon nano tubes is squeezed into the heating well and the production well, so that the carbon nano tubes are adsorbed or filled in the corrosion micropores, and the micropores where the carbon nano tubes are attached are formed. And high-temperature steam is circularly introduced into the heating well and the production well to heat the oil shale stratum. After heating for a certain time, stopping steam injection of the production well, and changing into production; and continuously injecting steam into the heating well. The method is suitable for an oil shale underground in-situ conversion exploitation technology, and is also suitable for geothermal exploitation and heavy oil thermal exploitation.

The invention relates to the technical field of plate surface heating, in particular to a heat exchange roller with high heat exchange efficiency, which comprises a contact cylinder, a sealing plate, an oil inlet and an oil outlet, and further comprises a buffer structure and an oil way dispersion structure, the oil way dispersing structure is arranged between the contact cylinder and the buffering structure and used for evenly distributing heating oil on the inner wall of the contact cylinder. The problems that when an existing oil heat exchange roller is used, the heating efficiency is low, and the temperature difference of the outer side wall of the heat exchange roller is large and unstable are effectively solved. The heat exchange roller adopts the dispersion flow channel composed of the inner cylinder, the boundary plate, the flow guide plate and the through holes, heating oil in the heat exchange roller can be dispersed, the dynamic balance error is smaller when the roller is started or stopped, through the design of the flow channel on the inner side of the contact cylinder, inlet oil and outlet oil are tightly attached to the inner wall of the contact cylinder to exchange heat in a countercurrent mode, and the heat exchange efficiency is improved. The heat transfer efficiency of oil and the contact cylinder is improved, and meanwhile the temperature of the roller wall is more uniform.

The invention discloses a self-powered temperature control and dynamic thermal compensation system, and belongs to the technical field of energy recovery and intelligent thermal management, the self-powered temperature control and dynamic thermal compensation system comprises a vibration energy capture and power generation subsystem and a bidirectional thermal compensation subsystem, the vibration energy capture and power generation subsystem comprises a piezoelectric array, a thermoelectric module and an energy storage device; the piezoelectric array is used for capturing vibration energy and converting the vibration energy into first electric energy, the thermoelectric module is used for conducting thermoelectric conversion through the temperature difference between the interior and the exterior of an oil tank to generate second electric energy, and the first electric energy and the second electric energy are stored in the energy storage device. The bidirectional thermal compensation subsystem comprises a thermoelectric refrigeration sheet, the thermoelectric refrigeration sheet is used for consuming electric energy in a low-temperature environment to heat the oil liquid, refrigerating the oil liquid in a high-temperature environment and converting waste heat into third electric energy, and the third electric energy is stored in the energy storage device. Self power supply is achieved through vibration energy and temperature difference generated in the vehicle running process, and stable temperature control over the oil tank can be achieved in the extreme environment.

The invention discloses a stamping device for unmanned aerial vehicle wing production, and particularly relates to the technical field of unmanned aerial vehicle wing production, the stamping device comprises a base, a control box is fixedly mounted at the front end of the base, a support is fixedly connected to the rear end of the base, a conveying rotating assembly is arranged in an inner cavity of the base, and a heating oil brushing assembly is arranged at the right part of the upper end of the base. According to the stamping device for unmanned aerial vehicle wing production, by arranging the conveying mechanism, the clamping and rotating mechanism and the heating mechanism, wing rib strip blanks can be automatically clamped and overturned in the stamping and feeding process, heating operation is conducted through hot air in the overturning process, and the production efficiency is improved. Dust on the outer surface of the wing rib blank can be cleaned, the blank is evenly heated in the overturning process, it can be ensured that the whole material is evenly heated, the situation of local overheating or supercooling is reduced, the stamping performance is optimized, the forming precision is improved, the stress and brittleness of the material are reduced, and the stability and production efficiency in the stamping process are improved.

The invention discloses an oil sealing method for an aero-engine, the oil sealing method adopts ground power oil sealing equipment to perform oil sealing on an engine to be subjected to oil sealing, and the oil sealing method comprises the following steps: S1, heating oil sealing oil, and dehydrating the heated oil sealing oil; s2, cooling the oil seal oil; and S3, the engine to be subjected to oil sealing is subjected to oil sealing. By the adoption of the oil sealing method, the requirement for ground oil sealing of the aero-engine can be met by configuring the vehicle body assembly, and through the hydraulic control system and the electric control system installed in the vehicle body assembly, the requirements for oil seal oil self-circulation filtering cleaning, heating dehydration, cooling and oil sealing can be met; and the requirements for nitrogen charging and oil removal can be met, the operation convenience and maintenance efficiency of maintenance personnel are greatly improved, the working intensity and the oil seal cost are reduced, and the device is suitable for application and popularization.

To provide a cleaning machine monitoring system capable of smoothly detecting the clogging of a filter of a cleaning machine and the deterioration of an oil line (for temperature control).SOLUTION: A cleaning machine monitoring system according to the embodiment includes: a cleaning machine that comprises a cleaning and drying tank for accommodating objects to be treated, a solvent tank for storing a solvent to be supplied to the cleaning and drying tank, an oil temperature control tank for heating oil in the solvent tank, and flow meters for measuring flow rates in a solvent circulation path piping between the cleaning and drying tank and the solvent tank, and in an oil circulation path piping between the solvent tank and the oil temperature control tank, respectively; a control device that is connected to the cleaning machine and collects operation data of the cleaning machine including the flow meters; a server that stores the operation data from the control device via a network; and a monitoring machine that monitors a failure of the cleaning machine based on current and past operation data stored and accumulated in the server.SELECTED DRAWING: Figure 1

The invention discloses a reusable superconducting coil vacuum pressure impregnation tool and method, and relates to the technical field of superconducting coil preparation tools. Comprising a dipping tool cylinder, an upper cover plate, a lower cover plate, a coil outer support, a superconducting coil and a coil inner support, the two ends of the dipping tool barrel are detachably connected with the upper cover plate and the lower cover plate respectively; a vacuum joint is arranged on the upper cover plate; a glue injection opening is formed in the side wall of the dipping tool barrel; the coil outer support is arranged on the inner side of the superconducting coil, the coil inner support is arranged on the outer side of the superconducting coil, the coil outer support, the superconducting coil and the coil inner support are arranged on the lower cover plate, and the space between the coil outer support and the inner wall of the dipping tool barrel is filled with epoxy blocks. The device can adapt to superconducting coils of different sizes only by increasing or decreasing the volume of the filling epoxy block, the dipping tool does not need to be destructively disassembled when the coils are taken out, and it is ensured that the temperature is uniform when the whole tool is heated and cured through heating oil in an interlayer of the dipping tool.

The invention discloses a deep hole hot extrusion die temperature control method which comprises the following steps: injecting a heated oil medium into an oil path of an upper die and a lower die through a die temperature controller, and preheating; after the mold temperature controller continues to heat the oil medium to the set temperature, the oil medium circulates in the oil way; after the working temperatures of the upper die and the lower die are monitored and obtained through a thermocouple sensor, the upper die and the lower die are closed; when the working temperature reaches the set temperature, the mold temperature controller reduces the temperature of an oil medium in an oil way of the upper mold and the lower mold, and the circulating flow of the oil medium in the oil way is adjusted; after production is completed, the temperature of the oil medium in the oil way is reduced through the mold temperature controller, and the upper mold and the lower mold are cooled. The temperature and flow of the oil medium are adjusted through the mold temperature controller, the mold temperature is adjusted through heat transfer of the oil medium, the mold temperature is monitored by the thermocouple sensor in real time, the thermocouple feeds monitoring data back to the mold temperature controller, the whole process forms a closed loop with the temperature accurately adjusted and controlled, and it is guaranteed that the mold is located in the most appropriate working temperature interval all the time.

The invention discloses a radio frequency heating oil-rich coal in-situ pyrolysis simulation test device and method in the technical field of oil-rich coal in-situ pyrolysis, the test device comprises a sealing tank and a computer, a plurality of limiting plates are arranged in the sealing tank, and a plurality of gas storage assemblies are arranged between the limiting plates and the sealing tank; an injection chamber for filling a microwave absorbent is arranged between every two adjacent gas storage assemblies; a plurality of pressure sensors for measuring pressure data are arranged on one side, far away from the sealing tank, of the limiting plate; the center of the bottom of the sealing tank is fixedly connected with a radio frequency transmitter for transmitting high-frequency electromagnetic waves; the top of the sealing tank is detachably connected with a tank door, and the tank door is provided with geological thermomanometers used for detecting temperature change data and an ultrasonic detection system used for detecting crack development information, wherein the geological thermomanometers and the ultrasonic detection system are alternately arranged. The simulation of the geological environment of the oil-rich coal sample is realized, and the experimental data of the microwave absorbent on the pyrolysis of the oil-rich coal sample under different radio frequency heating temperature conditions in the pyrolysis process of the oil-rich coal sample can be conveniently observed.

A gas turbine engine fuel system includes a fuel delivery system, an oil cooling subsystem, a fuel delivery conditioning system, and one or more optical coking sensors. The fuel delivery subsystem delivers fuel to a gas turbine engine and the oil cooling subsystem receives heated oil from the gas turbine engine. The fuel delivery conditioning system includes a fuel / oil cooler that is in fluid communication with the fuel delivery subsystem to receive the fuel and is in fluid communication with the oil cooling subsystem to receive the heated oil. The fuel / oil cooler transfers heat from the oil to the fuel to increase a temperature of the fuel, and the optical coking sensors output a signal indicating a thermal stress of the fuel that occurs with a changing temperature of the fuel. A controller receives the voltage signal determines an onset of coking in the fuel based on the signal.

The utility model relates to the technical field of oil drum heating, in particular to an efficient-heating oil drum heating device which comprises a movable platform, a heating device, a heating device and a heating device. One side of the movable platform is provided with a fixing groove which is used for containing an oil drum and is of a U-shaped structure; the stirring mechanism is arranged on the side, away from the fixing groove, of the top of the moving platform and used for stirring substances in the oil drum to increase the melting speed, and the two heating mechanisms are slidably arranged on the portions, on the two sides of the fixing groove, of the top of the moving platform correspondingly and used for being attached to the two sides of the oil drum for heating. The oil drum heating device is convenient to use, the oil drum heating convenience is improved, meanwhile, a worker can conveniently heat a large number of oil drums, the situation that a heating belt needs to be frequently disassembled and assembled when the large number of oil drums are heated is avoided, physical strength is effectively saved, the working efficiency is improved, and the melting speed of substances in the oil drums is increased through the stirring mechanism.

The invention discloses a natural gas-assisted oil shale self-heat-generation in-situ conversion development method, and belongs to the field of oil shale in-situ exploiting.The method comprises the steps that an inverse seven-point well pattern is arranged in a natural gas-assisted oil shale self-heat-generation in-situ conversion development target area to serve as a development well pattern, reservoir transformation is conducted on a reservoir of the target area, and a fracture network is formed; high-temperature nitrogen is injected through the injection well to locally preheat the oil shale reservoir, then normal-temperature air is injected into the injection well to cool the bottom of the injection well, and finally the normal-temperature air and natural gas are separately injected into the bottom of the injection well through the double-layer oil pipe. Under the assistance of natural gas, residues generated after kerogen thermal cracking are subjected to an oxidation reaction to release heat, an oil shale reservoir is heated, meanwhile, natural gas oxidation can effectively supplement insufficient heat release of low-oil-content oil shale ground storage residues in oxidation, successful triggering and operation of a self-heat-generation reaction are guaranteed, and the oil shale reservoir is protected from being damaged. And efficient output of oil-gas cracking products of the oil shale reservoir is realized.

To provide a microwave cooker and a cooking method capable of shortening a cooking time with a simple structure.SOLUTION: The microwave cooking apparatus 1 heats and cooks an object to be cooked in liquid by irradiating the object with microwaves. The microwave cooking device 1 includes an oil tank 20 that stores oil, a heating member 40 that is provided in the oil tank 20 and heats the oil stored in the oil tank 20, and an irradiation member 50 that is disposed inside the oil tank 20 and heats food F in the oil by irradiating the food F with microwaves. The irradiation member 50 includes a microwave irradiation port 52 disposed inside the oil tank 20.SELECTED DRAWING: Figure 2

The oil filling equipment comprises an oil tank placing main body, an oil tank main body and a control center, an oil tank fixing mechanism is arranged at the top of the oil tank placing main body, and the oil tank main body is limited and fixed through the oil tank fixing mechanism and is slidably connected to the top of the oil tank placing main body; an oil pump for conveying oil to the transformer is mounted on the outer surface wall of the oil tank body; a limiting metal block and a fixing base are arranged at the top of the oil tank body, a control center connecting mechanism is arranged on the fixing base, the control center is detachably installed on the fixing base through the control center connecting mechanism, the control center is electrically connected with the oil pump so as to control the oil conveying flow and pressure of the oil pump, and a double-rotating-rod heating and stirring mechanism is arranged in the oil tank body. The driving assembly drives the outer rotating rod and the inner rotating rod to rotate reversely, and the heating assembly synchronously rotates along with the rotating rods and heats oil. Therefore, uniform heating and full stirring of the insulating oil liquid in a low-temperature environment can be realized, the viscosity of the oil liquid is effectively reduced, and the oil filling quality and efficiency are improved.

The application discloses a catalytic combustion heater principle prototype, which comprises an air tank, a methane tank, a mixed gas tank and a combustion chamber, the air tank is connected with the mixed gas tank through a connecting pipeline, the gas outlet of the mixed gas tank is connected with the methane tank and the combustion chamber through two connecting pipelines respectively, the top of the combustion chamber is provided with a mixed gas inlet, and a blower is arranged outside the combustion chamber, the application simulates the operation state of the underground catalytic combustion heater, high-temperature tail gas released by catalytic combustion mixed gas is used for heating oil shale layers, so that the oil shale is pyrolyzed to obtain the purpose of exploiting oil and gas, the simulation reference result of the experimental prototype can be understood as the actual operation result, the application not only reduces the exploitation cost of the oil shale in-situ conversion exploitation, but also improves the oil and gas exploitation efficiency, reduces the exploitation cost and reduces the harm of the toxic tail gas generated by incomplete combustion to animals, plants and the environment caused by direct release of the toxic tail gas into the atmosphere.

The invention discloses an oil shale in-situ conversion and carbon sequestration method by injecting high-temperature carbon dioxide and cooperating with sodium capsules, and belongs to the technical field of fossil energy in-situ exploitation and carbon sequestration. The method comprises the following steps: firstly, determining a target development area and formulating a corresponding development strategy; then, the oil shale reservoir is subjected to fracturing transformation; then, the oil shale reservoir is heated, supercritical carbon dioxide is injected, and displacement recovery is conducted; then, sodium capsule suspension fluid is injected into the oil shale reservoir, and solid-phase geological storage is achieved; and finally, after oil and gas exploitation reaches the economic limit, all the injection wells and the production wells are closed, and final geological storage is completed. According to the method, the carbon dioxide geological sequestration technology and the oil shale in-situ conversion process are deeply fused, the oil shale recovery efficiency is remarkably improved, the geological sequestration of the carbon dioxide is synchronously achieved, and the method has important significance in the fields of carbon emission reduction and fossil energy in-situ exploitation.

The invention belongs to the technical field of bearing press-fitting machines, and discloses a servo motor bearing press-fitting machine which comprises a supporting frame, a press-fitting mechanism is arranged above the supporting frame, an oil spraying mechanism is arranged in the middle of an inner cavity of the supporting frame, and a heating oil conveying mechanism is arranged below the inner cavity of the supporting frame. A clamping mechanism is arranged in the center of an inner cavity of the supporting frame, and a vibration mechanism is arranged below the press-fitting mechanism. Hot lubricating oil is used for spraying the contact position of the bearing and the shaft through the oil spraying mechanism, so that the contact position of the bearing and the shaft is prevented from being abraded during press fitting due to tight matching, the bearing and the shaft are more conveniently pressed, meanwhile, the bearing and the shaft do not need to be lubricated subsequently, the overall machining efficiency is improved, and the production cost is reduced. And the bearings with different sizes are clamped through the clamping mechanism, so that different amounts of lubricating oil can be used for heating and lubricating according to different bearings.

The invention relates to the technical field of heat pump systems, in particular to an oil way system applied to a petrochemical background heat pump process and an operation method thereof, the oil way system comprises a tower top condensation evaporator, and a gas-liquid separator and the tower top condensation evaporator are connected through a pipeline; the heating coil is arranged in the gas-liquid separator, the oil separator is connected with the heating coil through an oil way I, the heating coil is connected with the oil pump through an oil way II, the oil pump is connected with the compressor through an oil way III, and the compressor is connected with the oil separator through a pipeline; the first oil way is connected with the oil return plate heat exchanger through a fourth oil way, and the oil return plate heat exchanger is connected with the second oil way through a fifth oil way. The tower top condensation evaporator is connected with the oil return plate heat exchanger through an oil return pipe, an oil return electromagnetic valve and an oil return adjusting valve are arranged on the oil return pipe, and a heating oil adjusting valve is arranged on the fourth oil way. The oil return plate heat exchanger is connected with the compressor through a sixth oil way, and an oil return temperature sensor is arranged on the sixth oil way. Waste heat of high-temperature lubricating oil is utilized, and efficiency is improved.

The invention discloses a sheet type graphene heating device for vehicle methanol fuel and a heating method of the sheet type graphene heating device, and belongs to the technical field of heating devices.The sheet type graphene heating device for the vehicle methanol fuel comprises an oil tank used for containing the methanol fuel, the oil tank is sleeved with a protection box, and a plurality of graphene heating sheets making contact with the bottom face of the oil tank are installed on the inner bottom face of the protection box; the device further comprises a moving mechanism, two stirring mechanisms and a driving mechanism. According to the plate type graphene heating device for the vehicle methanol fuel, the graphene heating plates, the protection box, the moving mechanism and the stirring mechanism are arranged, the multiple graphene heating plates are started to heat the oil tank, then the methanol fuel in the oil tank is heated, and meanwhile, multiple stirring rods in the stirring mechanism rotate and move up and down in the oil tank, so that the methanol fuel in the oil tank is heated; methanol at the middle upper part of the oil tank is mixed to avoid temperature stratification with cold upper part and hot lower part.

This utility model discloses a make-up air structure for a board material purification system, including an insulated box with an air inlet and an air outlet connected end-to-end. A heating oil pipe is located at the bottom of the insulated box, with the air outlet below the heating oil pipe and the air inlet at the top of the insulated box. The heating oil pipe is connected to a thermal oil heater. An exhaust system is connected to the insulated box, and the air inlet and outlet are connected via an air supply pipe. A circulating fan is installed on the air supply pipe, and a make-up air pipe is connected to the air supply pipe. This utility model can supplement fresh air into a board material purification system with a thermal circulation structure to maintain air quality and pressure balance within the insulated box.

The embodiment of the utility model provides a heating bowl which comprises a bowl body made of breathable materials, and at least three heating parts are arranged on the bowl body. According to the embodiment, the contact area between the heating part and the ointment is increased on the heating bowl, and the ointment is heated to heat, evaporate and atomize oil liquid of the ointment body. The utility model further provides atomization equipment which comprises a hopper body provided with an air suction channel and further comprises the heating bowl, an air collection cavity for installing the heating bowl is formed in the hopper body, and the air suction channel is communicated with the air collection cavity. According to the embodiment, the air suction channel is communicated with the air collection cavity, the ointment is not burnt in the heating process of the heating bowl, the ointment is heated, evaporated and atomized through heating, atomized smoke contains particles heavier than air, as long as external airflow interference is avoided, meanwhile, hot air which rises from the periphery and is burnt and heated is isolated, and the hot air does not carry the smoke to rise; smoke can sink into the gas collection cavity through the heating bowl and then is sucked out through the gas suction channel.

The invention provides a fuel filter and a vehicle, and the fuel filter comprises a central pipe which is provided with a water repelling section and a water collecting section; the filter element is arranged outside the central pipe in a sleeving manner, and the filter element is respectively communicated with the water repelling section and the water collecting section; the water collecting cup is connected to the bottom of the central pipe, and the water collecting cup communicates with the water collecting section; the heater is arranged in at least one of the water repelling section and the water collecting section, and the heater is used for heating oil bodies on the dirty oil side and the clean oil side of the filter element. According to the scheme, the heater is integrated in the center pipe, the internal space of an engine compartment does not need to be occupied, a power source of the fuel filter can be utilized, the circuit layout of the heater is simplified, and then the manufacturing cost is reduced.

The utility model relates to the technical field of dyeing equipment, and discloses an efficient temperature-controlled dyeing equipment, which includes a dyeing tank. An installation frame is slidably arranged on the top surface of the dyeing tank. The installation frame is U-shaped. A flow disturbance structure for making the temperature of the dyeing solution uniform is arranged on one side of the dyeing tank, and a temperature control structure for controlling the temperature of the dyeing solution is arranged on the outer wall surface of the dyeing tank. Through the arrangement of the flow disturbance structure and the temperature control structure, the staff injects heating oil into the jacket, and starts the heating coil through the PLC controller to heat the heating oil and the dyeing tank. The temperature sensor monitors the temperature in real time and feeds it back to the PLC controller after reaching the set range to control the heating coil to stop heating. The motor drives the connecting shaft to rotate, and the fixed shaft slides and reciprocates in the annular groove, thereby pushing the flow disturbance plate to stir the dyeing solution, promoting the mixing of the bottom layer and the upper layer, preventing precipitation, the circulation pump continuously extracts the bottom layer dyeing solution and transports it to the upper layer, enhancing the flow, heating evenly, avoiding temperature difference, and improving the dyeing effect.

The present invention discloses a multi-split system oil return control method, device, and multi-split system. The method comprises: when the multi-split system is operating in heating mode and oil return is required, detecting the outdoor ambient temperature and / or the indoor unit startup load rate; and determining whether to execute the heating oil return mode or the cooling oil return mode based on the outdoor ambient temperature and / or the indoor unit startup load rate. The present invention selects different oil return control modes based on the outdoor ambient temperature and / or the indoor unit startup load rate. When the outdoor ambient temperature is low and the indoor unit startup load rate is high, oil return is selected in the heating mode without switching to the cooling mode, thereby avoiding affecting the indoor heating effect and ensuring the user experience of the multi-split system during oil return.

The present invention relates to the field of electric power, and specifically to a thermal peak-shaving system for a new type of thermal power plant complementary to light and coal. The oil pipeline between the oil outlet and the oil inlet of the trough-type heat collecting device is sequentially provided with a hot oil heat storage tank, a high-temperature oil-water heat exchanger, a low-temperature oil-water heat exchanger, a cold oil heat storage tank and an oil transfer pump along the flow direction of the internal heating oil. The condensate main pipe at the bottom of the condenser is provided with a condensate pump. The condensate main pipe at the outlet of the condensate pump is connected to the water side inlet of the high-temperature oil-water heat exchanger through the water inlet pipe of the high-temperature oil-water heat exchanger. The heat is supplemented for the heating extraction steam through an external heat source, breaking the heat user's demand for the heating extraction steam parameters, limiting the problem of variable load operation of the cogeneration unit, thereby enhancing the peak-shaving flexibility of the unit. This system can also adopt different operation modes one and two according to the actual peak-shaving demand of the power grid, thereby realizing a flexible operation mode integrating heating, power generation and peak-shaving.

The invention belongs to the technical field of metal hot rolling equipment, and particularly relates to a waste oil pipe hot rolling device and a using method thereof. The pipe bundling machine further comprises a straightening and feeding assembly, and the straightening and feeding assembly is installed on the pipe bundling machine body and used for heating oil pipes in the feeding process. According to the waste oil pipe bundling machine, the elastic core rod is adopted to be matched with the feeding push rod, after the waste oil pipe and the elastic core rod are combined, the waste oil pipe is pushed to move in the direction of the pipe bundling machine body, and in the movement path of the waste oil pipe, the waste oil pipe can be conveniently and rapidly bundled. The waste oil pipe is straightened by changing the size of the straightening channel, so that the bending degree of the waste oil pipe is low, and the convenience of combination of the waste oil pipe and the pipe binding machine body is enhanced.

Various disclosed embodiments include oil warming systems, electric motors, and vehicles. In an illustrative embodiment a system includes an oil reservoir, a motor stator, and an oil pump. The oil reservoir is configured to hold oil therein. The motor stator is positioned such that at least a portion thereof is positioned within the oil reservoir where the at least the portion of the motor stator is in thermal communication with the oil while the oil reservoir includes the oil therein. The motor stator is configured to warm the oil while in an oil warming mode. The oil pump is fluidly coupled to the oil reservoir and is configured to draw oil out of the oil reservoir.