209results about How to "Reduce oil consumption" patented technology

The invention discloses a deep fryer with a rotatable frying cage, which comprises an upper cover, the frying cage, a shell, an inner pot, a heater and a control box, wherein the frying cage is detachably suspended in the inner pot; the inner pot is placed in the shell; and the heater is placed at the inner bottom or the outer bottom of the inner pot. The deep fryer is characterized in that one lateral surface of the inner pot is provided with a step protruded to the center of the inner pot; a shaft assembly, a coupler and a motor which are connected together in turn are fixed on the lateral surface on the shell opposite to the step; and the shaft assembly passes through the frying cage, one end of the shaft assembly is placed on the lateral surface of the inner pot, and the other end of the shaft assembly is connected with the coupler. The frying cage can rotate in 360 degrees to fully turn food so as to save oil and improve the food frying effect; and a groove for connecting the frying cage and the motor does not need to be formed on the inner pot so as to avoid the problems of oil splash and cleaning difficulty.

A lubricating oil composition comprising a) an oil of lubricating viscosity having a viscosity index of at least about 95; b) at least one calcium detergent; c) at least one oil soluble titanium compound; d) at least one friction modifier; and e) at least one metal dihydrocarbyldithiophosphate compound. The composition has a Noack volatility of about 15 wt. % or less, and contains from about 0.05 to about 0.6 wt. % calcium from the calcium detergent, titanium metal in an amount of at least about 10 ppm up to about 1500 ppm titanium from the titanium compound, and phosphorus from the metal dihydrocarbyldithiophosphate compound in an amount up to about 0.1 wt. %.

A fully formulated lubricating oil, lubricated surface, and lubricant additive concentrates for lubricants providing reduced sludge formation. The fully formulated lubricating oil composition has therein at least one succinimide dispersant derived from a polyalkylene compound having from about 50 to about 85% vinylidene double bonds in the compound, a metal containing detergent, at least one wear reducing agent, at least one antioxidant, and a hydrocarbon soluble titanium compound as a friction modifier. The lubricating oil composition is also substantially free of molybdenum compounds.

A mechanical-hydraulic composite energy-saving servo hydraulic machine with a toggle rod mechanism comprises a work table which is fixed on a base. A machine body is of a three-beam and four-column structure, the four stand columns are hollow, pull rods penetrate through the inside of the stand columns, the two ends of each pull rod are fixed on an upper beam and the base respectively through tightening nuts, guide rails are fixed on the stand columns, and linear guide rail sliding blocks are fixed on the outer walls of press sliding blocks and slide up and down on the guide rails. By combining high control precision of a servo motor, high operation speed of a mechanical structure and large load of a hydraulic cylinder, idle stroke is driven by the independent servo motor and the mechanical structure, and work stroke is driven by a hydraulic system. The mechanical-hydraulic composite energy-saving servo hydraulic machine can lower power of the servo motor, improve the energy utilization rate and improve flexibility.

A method of minimizing oil consumption in a gas turbine engine, by avoiding reliance on air intake into the engine oil circuit for bearing chamber oil sealing purposes. The engine oil circuit has bearing chambers with hydropad seals between the shaft and bearing chamber. During engine operation the ring rotates to cast oil radially outwardly from the shaft axis toward the outer periphery of the bearing chamber under centrifugal force, independent of any gas pressure differential across the sealing surfaces of the hydropad seal.

The invention discloses a method and a device for automatic detection of high-voltage resistance of a spark plug on a production line. The method is characterized in that a clamping mechanism clamps the spark plug to be detected on an assembly line; the ignition thread end is downwards inserted into a gas sealed chamber; high-pressure air is filled into the sealed chamber; a high-voltage pulse voltage string is supplied on a conductive screw rod of the spark plug; a voltage signal is subjected to sampling conditioning and window judgment by a circuit detection board according to a principle of voltage drop after high-voltage breakdown due to an insulation defect; the qualified pulse string is introduced into a controller; and the voltage resistance of the detected spark plug is judged whether the voltage resistance is qualified according to parameter setting.

The invention is a testing device for crude oil viscosity, which is applicable to the determination of crude oil viscosity-temperature curves and the evaluation of heating and agent addition. The testing device comprises a programmable water bath (1), circulating water (13), a water jacket outlet (14), a water jacket inlet (19), a stirring motor (4) and a stirring paddle (16), a viscometer (5) and a rotor (10), and a rotating shaft (17); and the invention is characterized in that the device also comprises a crude oil processing device (3), a sleeve connector (6), a sleeve (7), a data transmission cable (8), a computer (9), a cover (15), and a rotating shaft connector (18). The crude oil processing device (3) is connected with the programmable water bath (1) through a water-bath inlet pipeline (2) and a water-bath outlet pipeline (12); the stirring motor (4) is connected with the stirring paddle (16) which is inserted into the crude oil processing device (3); the viscometer (5) is firstly connected to the sleeve connector (6), and then connected to the sleeve (7) which is inserted into the crude oil processing device (3) containing crude oil (11).

The invention relates to an axle center ventilating structure and a gas turbine engine. A bearing chamber of a cold end component of the engine communicates with a bearing chamber of a hot end component of the engine, a ventilating system is used for maintaining the pressure of the bearing chamber of the cold end component of the engine to be the same with that of the bearing chamber of the hot end component of the engine basically, the bearing chamber of the cold end component communicates with an engine nozzle through a centrifugal oil-gas separator, an oil-gas mixture in the bearing chamber of the hot end component enters the bearing chamber of the cold end component of the engine via an axle center ventilating cavity, then the oil-gas mixture in the bearing chamber of the hot end component and an oil-gas mixture of the bearing chamber of the cold end component are subjected to oil-gas separation together by the centrifugal oil-gas separator, and the unseparated oil-gas mixture is discharged via the engine nozzle. The bearing chamber axle center ventilating structure of the engine is simple and is convenient to design and adjust, the bearing chamber of the cold end component communicates with the bearing chamber of the hot end component, the pressure of the bearing chamber of the cold end component and the pressure of the bearing chamber of the hot end component can be ensured to be almost the same, design and adjustment of a secondary air system are facilitated, faults of the engine due to leakage of lubricating oil and unsmooth circulation are reduced, the reliability of the engine is improved, meanwhile, heat transmission from the bearing chamber of the hot end component to the bearing chamber of the cold end component can be improved, and therefore, the quantity of lubricating oil required for cooling a bearing of the hot end component is reduced.

The invention provides durable rubber asphalt, which is characterized by: comprising the raw materials of asphalt and rubber powder, wherein the amount of the asphalt is 75 to 85 percent based on the total weight of the asphalt and the rubber powder and the amount of the rubber powder is 15 to 25 percent based on the total weight of the asphalt and the rubber powder; and also comprising an activator and an anti-reversion agent, wherein the amount of the activator is 0.1 to 1 percent based on the weight of the rubber powder, and the amount of the anti-reversion agent is 0.1 to 0.5 percent based on the weight of the rubber powder. The durable rubber asphalt provided by the invention solves the instability problem of rubber powder modified asphalt stored at high temperature by using the synergistic effect of the anti-reversion agent and the activator, and has the characteristic of resisting softening point attenuation during high-temperature storage. When used in a mixed asphalt material, the durable rubber asphalt has the characteristics of low oil amount and high low-temperature anticracking performance. The durable rubber asphalt can be used in road construction and maintenance materials for making bridge surface waterproof layers, stress absorbing layers, asphalt synchronous chip sealing layers and the like.

The invention relates to a novel laser welding piston with a forged steel structure. The piston comprises a forged piston ring body and a piston body, wherein the piston ring body and the piston body are welded by laser; a closed cooling oil chamber is formed between the piston ring body and the piston body and is communicated with the external through an oil inlet hole and an oil outlet hole; the lower part of the piston ring body is provided with an oil ring groove; the piston body corresponding to the position of the oil ring groove is provided with an annular groove; a girdle band is arranged between the oil ring groove and the annular groove; the girdle band is provided with a plurality of oil return holes communicating the oil ring groove and the annular groove; or the lower side of the oil ring groove is provided with a plurality of level oil return blind holes. The piston reduces weight of the piston, and increases flexibility of the piston body; and the oil return holes or the level oil return blind holes are favorable for back flow of machine oil of the oil ring groove, particularly the machine oil at the bottom of the oil ring groove so as to prevent the spilling of the machine oil caused by high pressure of the machine oil, and contribute to reducing machine oil consumption and harmful emissions of motors.

The invention discloses a preparation method of fried dough twists without additives, solving the problems of poor crisp taste of fried dough twists, damage to human body health, high oil absorption of fried dough twists existing in the traditional making of fried dough twists by inevitably adding food additives. The method of the invention comprises the following steps of: evenly mixing leaven and seasonings with water; adding flour and evenly kneading into dough; then, twisting the dough into long fried dough twists; and putting into a pot to fry, wherein high-temperature gluten breaking powder which accounts for 20-40 percent of the mass of the flour is also added to the raw materials and is prepared by the high-temperature anhydrous treatment of the flour. The invention has extremely simple production process, low production cost, no additive, low fat content and crisp taste without bitter taste and is suitable for all crowds.

A solar powered battery charging system for an existing hybrid or electric vehicle is provided. The system includes a photovoltaic panel attachable to a vehicle and connectable to a battery apparatus of the vehicle. The vehicle may be attached to an electric utility power grid to provide excess energy in the form of electricity to the power grid.

A lubricating device and method for delivering fresh grease to a rolling element bearing in a first cavity, by by-passing all existing grease in the first cavity and in other cavities surrounding and / or leading to the rolling element bearing, and delivering fresh grease in close proximity to the rolling element bearing. A tube is disposed between the zerk fitting and the bearing to ensure delivery of the fresh new grease to the bearing.

The present invention relates to a combined machine for pumping and separating into two distinct and purified phases a two-phase liquid / gas mixture or fluid, preferably oil / air, entering the machine, comprising means for the suction, pumping and partial separation of the two-phase fluid, means for drying and extracting the separated gas and means for degassing and forcing back the separated liquid, comprising at least three physically separated stages (A,B,C) intended to be activated by a means that is internal or external to the machine, and built into a single casing:a first stage (A), equipped with an intake for the two-phase fluid, in which the two-phase fluid is sucked, pumped and partially separated into two distinct phases, one phase being mainly liquid and the other being mainly gaseous;a second stage (B), comprising two zones:a first zone in which the mainly liquid phase extracted from the first stage (A) is degassed, anda second zone in which the mainly gaseous phase extracted from the first stage (A) is dried, equipped with a first outlet for the dried gas;a third stage (C), in which the degassed liquid is forced back and pressurised, equipped with a second outlet for the degassed liquid.

The invention discloses a full-automatic insulating oil chromatographic analysis system which comprises an automatic desaeration and sample introduction device, an insulating oil chromatographic analysis system and a monitoring platform; wherein, the automatic desaeration and sample introduction device comprises an oil sample pretreating device, a pressurizing sampling device and a transmission pipeline; the insulating oil chromatographic analysis system includes an insulating oil gas chromatograph and an air source; the monitoring platform comprises a signal communication system and a data processing system; the automatic desaeration and sample introduction device is connected with an introduction port of the insulating oil chromatographic analysis system through the transmission pipeline, and the automatic desaeration and sample introduction device and the insulating oil chromatographic analysis system are connected with the monitoring platform by a USB signal wire. The chromatographic analysis system has high degree of automation as well as simple and convenient operation, can automatically finish the process of insulating oil sample desaeration, extraction and sample introduction analysis, and automatically judges the types of the fault of an oil charge electrical device.

The invention provides a sweet-scented osmanthus crunchy rice candy, and belongs to the technical field of processing and production of agricultural and sideline products. The sweet-scented osmanthus crunchy rice candy is prepared from sweet-scented osmanthus, sticky rice, maltose, vegetable oil, walnut kernels, peanut kernels and sesame kernels with water, and has the following benefits: sweet-scented osmanthus is put into water for boiling sticky rice, and then sweet-scented osmanthus petal crushed pieces are laid and spread when an obtained mixture is poured into a die for shaping, so that the whole crunchy rice candy has the color, fragrance and taste of sweet-scented osmanthus; three batches of oil sand are used to stir-fry the sticky rice placed in the shade to dry in succession to prepare oil rice flowers, and heat and grease are transmitted via sand particles, so that the oil rice flowers are uniformly heated to be in due puffing, and the oil consumption is reduced to the utmost extent; then a little of maltose and vegetable oil are used to prepare oil-sweet water which is stirred into the oil rice flowers to prepare the crunchy rice candy, so that the crunchy rice candy has due sweetness and due adhesion; the crunchy rice candy prepared in this way is crisp and refreshing, soft when being in the mouth, and is endless in aftertaste, the using amounts of oil and sweets are comprehensively reduced, special flavor is increased, and the sweet-scented osmanthus crunchy rice candy is a health product according with the age requirements.

The invention provides a micro-fluidic chip system capable of regulating emulsion formation. The micro-fluidic chip system comprises a micro-fluidic chip and a control mechanism arranged outside the chip, wherein a plurality of material loading holes and a plurality of liquid drop collecting holes are formed in the micro-fluidic chip; the material loading holes consist of oil holes and sample holes, the oil holes and the sample holes communicate with the liquid drop collecting holes through corresponding pipelines respectively, and pressure regulating devices are arranged at the inlet end of the oil hole and the inlet end of the sample hole respectively. The system has the beneficial effects that liquid entering the oil holes and the sample holes can be independently controlled, so that the sizes of formed liquid drops are regulated and controlled; independent group control is carried out on the pipeline in pairs, selective opening and closing of passages are carried out, and the wasteof energy sources and consumed materials cannot be caused; and the internal blockage of chip pipelines is avoided by adding a filtering mechanism. The proportion of oil to water can be controlled tobe (1 to 6):1 by adopting the system, and the oil consumption is greatly saved under the condition that the same number of liquid drops needs to be produced.

The invention discloses an opposite piston type engine, which comprises a cylinder body, an intake valve, an exhaust valve, a first piston and a second piston which can move in a way of facing to each other or reversing to each other, a first crankshaft connected with the first piston and a second crankshaft connected with the second piston, wherein the first piston and the second piston are arranged in the cylinder body in a way of facing to each other, and the intake valve and the exhaust valve are arranged on the wall of the cylinder body between the first piston and the second piston. Since two pistons which can move in the way of facing to each other are arranged in the cylinder body, the invention has the advantages that the heat energy generated by gas in a combustion chamber between the two pistons can be converted into mechanical energy to a large extent and the work efficiency of the engine is greatly improved.

The invention relates to a composite of lubricant and a preparation method thereof, in particular to a composite of engine lubricant and a preparation method thereof, which belong to the lubricant technical field. Alkyl naphthalene and naphthenic bright stock are added to base oil and at the same time thiophosphoric acid molybdenum additive containing nitrogen, ashless dispersing agent boride, hydrostyrene-isoprene VI improver (Infineum SV 261) and the like are added. Through the mutual coordination of the components, the lubricant composite has obvious compatibility adaptability of a rubber sealing ring, engine oil leakage is avoided, gas blowby is prevented, the dynamic property of the engine is improved, engine oil consumption is reduced, the emission property of the engine is improved and the oil draining period of engine oil and the service life of the engine are prolonged. The invention is particularly applicable to the vehicles which have run more than 100000km or have been overhauled.

Provided is a tensioner with which efficiency of recirculation of oil can be improved and dependency on oil supplied from an oil pump or the like can be reduced. The tensioner includes a pressure adjustment mechanism, wherein the pressure adjustment mechanism includes a cylinder portion and a piston that is disposed in the cylinder portion so as to be capable of moving in a front-rear direction and that divides an interior space into an oil storage chamber and an adjustment space, and a liquid-tight state is maintained between the cylinder portion and the piston in all positions between a position of the piston where the piston has moved closest to the oil storage chamber side and a position of the piston where the piston has moved closest to the adjustment space side.

There is provided an engine capable of reducing oil consumption. The engine includes a cylinder head, a cylinder head cover mounted above the cylinder head, a rocker arm covered by the cylinder head cover, and a breather chamber provided inside the cylinder head cover. As a front-rear direction is defined by a longitudinal direction of the cylinder head cover, the breather chamber has a blow-by gas inlet at one side in the front-rear direction, a blow-by gas outlet at another side in the front-rear direction, and an oil discharging guide chamber at an intermediate part in the front-rear direction. The blow-by gas inlet is opened on a bottom wall of the breather chamber, and a peripheral wall of the oil discharging guide chamber is protruded downwardly from the bottom wall of the breather chamber toward between the rocker arm provided at a side of the blow-by gas outlet and the blow-by gas inlet.

The invention discloses motor lubricating oil. The motor lubricating oil is characterized in that the motor lubricating oil is prepared from the following components in parts by weight: 0.01-0.5 part of paraffin, 5-13 parts of methylene dichloride, 3-9 parts of trichloromethane, 11-19 parts of n-pentane, 3-9 parts of polyvinyl alcohol, 5-10 parts of normal heptane, 3-5 parts of boric acid, 1-2 parts of sodium benzoate, 0.05-6.4 parts of polyvinylpyrrolidone, 3-6 parts of 1-butyl-3-methylimidazole hexafluorophosphate, 3-12 parts of n-pentane and 40-80 parts of petroleum ether. The motor lubricating oil has the beneficial effects that the lubricating oil has strong universality and good solubility, the concentration of the blended lubricating oil is uniform, the lubricating oil has no sediment or precipitation when being stored for a long time and has good effect, the lubricating oil has no visible residue after liquid components are volatilized, and the lubricating oil has no destructive effect on insulation, can be coated uniformly, has low friction coefficient and low price.

The present invention relates to a highly substituted carboxymethyl starch sodium preparation method, which comprises processes such as starch alkalization, starch etherification and deep purification, and is characterized in that the method comprehensively adopts a multi-step etherification reaction and a high temperature stirring technology, and the multi-step etherification reaction and the high temperature stirring technology comprise steps of sequentially adding a reaction alkali and a starch raw material to a mixing multiple solvent in a step-by-step manner to carry out an infiltration alkalization reaction, spraying the remaining alkali solution into the reaction system under high temperature stirring through pressurization in a mist form, adding an etherification agent, and carrying out an etherification process four times. Compared with the method in the prior art, the method of the present invention has characteristics of complete alkalization and etherification, high conversion rate and high production efficiency.

The invention provides a large converter transformer oil tank for a fire extinguishing test. The large converter transformer oil tank comprises an oil tank body; the top cover covers the top of the oil tank body, and a flange connector of the ascending flanged base and the first oil conservator are reserved on the top cover; the second oil conservator is communicated with the oil tank body; and the first bracket is connected with the oil tank body, so that the height of the oil tank body is the same as that of the true transformer oil tank. The first support supports the oil tank body at the same height position as a real transformer oil tank. The size of the top cover is completely consistent with that of the top cover of the true transformer; according to the invention, the lifting baseis removed, and the lifting base flange interface and the first oil conservator are reserved, so that the structure of the test oil tank is simplified, the oil consumption and the test risk are reduced to the maximum extent while the physical fire of the real converter transformer is completely simulated, and the condition that flame burns at the top of the converter transformer during a fire extinguishing test is effectively simulated.

The invention relates to a main-transformation heat-dissipating device with SF6 (sulfur hexafluoride) as a refrigerant medium and a heat-dissipating method. The main-transformation heat-dissipating device consists of a transformer oil flow circulating system and an SF6 refrigerant medium circulating system, wherein the transformer oil flow circulating system comprises a main-transformation body, an oil pump, and a transformer oil flow passage of an SF6 evaporator; the main-transformation body is filled with transformer oil for cooling a coil and an iron core; a cold oil inlet is formed in the upper part of the main-transformation body; a hot oil outlet is formed in the lower part of the main-transformation body; the oil pump conveys hot transformer oil from the hot oil outlet to an inlet of the transformer oil flow passage of the SF6 evaporator; the hot transformer oil is cooled by an SF6 refrigerant inside the SF6 refrigerant circulating system and around the transformer oil flow passage, and flows from an outlet of the transformer oil flow passage of the SF6 evaporator to the cold oil inlet. The main-transformation heat-dissipating device has huge advantages of safety, reliability, high cooling efficiency, small equipment volume, low oil consumption, less maintenance, economical overall operation and the like, and is a revolutionary innovation of a main-transformation cooling way.

The invention discloses an electric pull rod-adjustable mould clamping mechanism. The mechanism comprises an ejection mechanism, a brake mechanism, a moving template, a pull rod, a fixed template, a high-pressure mould clamping cylinder and a quick mould moving cylinder, wherein the ejection mechanism is arranged on the moving template; the quick mould moving cylinder moves the moving template; the brake mechanism is arranged on the moving template; the brake mechanism brakes the pull rod through a brake nut of the brake mechanism; the electric pull rod-adjustable mould clamping mechanism is also provided with an electric pull rod adjusting mechanism which comprises a speed reducer, a servo motor, a speed reducer connection end cover, lead screws of a lead screw pair, screw nuts of the lead screw pair and a pull rod nut, wherein the servo motor is connected with the speed reducer; the speed reducer is fixed on the speed reducer connection end cover; the speed reducer connection end cover is fixed at the front end of the mould clamping cylinder; the front cover of the mould clamping cylinder is fixed on the fixed template; the servo motor is connected with the lead screws of the lead screw pair; and the screw leads of the screw lead pair are matched with the screw nuts of the screw lead pair which is fixed on the head of the pull rod.

The invention discloses a two-stage oil-gas separation diesel engine breathing system. The technical structure of the two-stage oil-gas separation diesel engine breathing system is that: high-pressure mixed oil gas enters an oil-gas pre-separation chamber in a rocker chamber cover, and is separated for the first time via a U-shaped channel consisting of three baffle plates. Engine oil is adsorbed on the baffle plates, and flows back into a cylinder cover via an oil return tube. An oil-gas mixture still containing engine oil is separated out and enters a breather through the waste gas outlet of the rocker chamber cover, the air inlet of the breather is tangential to the circular inner wall of the breather, thus the oil-gas mixture forms high-speed rotating air current in the breather, and residual engine oil and gas impurities in the oil-gas mixture are adsorbed onto a filter screen by means of centrifugal force, so that second separation is finished. Clean gas is exhausted into the atmospheric air via the air outlet of the breather and an air outlet tube. After two-stage oil-gas separation, the content of impurities and engine oil steam in waste gas is very low. A remarkable effect is achieved on reaching an emission standard and engine oil loss level while the pressure of a crankcase is lowered effectively, and pollution to the atmospheric environment is lowered effectively.

The invention discloses a deep fryer with a rotatable frying cage, which comprises an upper cover, the frying cage, a shell, an inner pot, a heater and a control box, wherein the frying cage is detachably suspended in the inner pot; the inner pot is placed in the shell; and the heater is placed at the inner bottom or the outer bottom of the inner pot. The deep fryer is characterized in that one lateral surface of the inner pot is provided with a step protruded to the center of the inner pot; a shaft assembly, a coupler and a motor which are connected together in turn are fixed on the lateral surface on the shell opposite to the step; and the shaft assembly passes through the frying cage, one end of the shaft assembly is placed on the lateral surface of the inner pot, and the other end of the shaft assembly is connected with the coupler. The frying cage can rotate in 360 degrees to fully turn food so as to save oil and improve the food frying effect; and a groove for connecting the frying cage and the motor does not need to be formed on the inner pot so as to avoid the problems of oil splash and cleaning difficulty.

A double door kitchen electric oven with temperature display and displacement prevention functions comprises a displacement prevention device, a gas frying device, a duplex metal thermometer, a microwave oven body and an oven body. The microwave oven body is fixedly connected with the oven body, and the bottom of the microwave oven body and the bottom of the oven body are each provided with two first supporting feet. The gas frying device is arranged in the microwave oven body. The upper surface of the microwave oven body and the upper surface of the oven body are both provided with louvers. The displacement prevention device comprises the first supporting feet and at least one bowl-shaped suction cup. One end of the outer circle of each bowl-shaped suction cup is provided with a tongue piece used for preventing the situation that the microwave oven body is attracted too firmly so that the microwave oven body cannot be moved. The bowl-shaped suction cups are independently arranged at the bottom of the microwave oven body and the bottom of the oven body or arranged under the supporting feet. The double door kitchen electric oven adopts the overall design of double doors, and is simple and reasonable in structure, reliable in performance, convenient to use, accurate in temperature induction, safe, reliable, high in attraction force, convenient and fast in machining production, low in cost and flexible to operate.

The invention relates to a main-transformation coiled-tube-type heat-dissipating device with SF6 (sulfur hexafluoride) as a refrigerant medium and a heat-dissipating method. The main-transformation coiled-tube-type heat-dissipating device consists of a transformer oil flow cooling and circulating system and an SF6 refrigerant circulating system, wherein the transformer oil flow cooling and circulating system comprises a main-transformation body, an oil pump, and a tube pass of a coiled-tube-type SF6 evaporator; the main-transformation body is filled with transformer oil; a cold oil inlet and a cold oil inlet valve are arranged at the upper part of the main-transformation body; a hot oil outlet and a hot oil outlet valve are arranged at the lower part of the main-transformation body; the oil pump conveys hot transformer oil from the hot oil outlet to the tube pass of the coiled-tube-type SF6 evaporator; the hot transformer oil is cooled by an SF6 refrigerant inside the SF6 refrigerant circulating system and around the tube pass, and flows from an outlet of the tube pass of the coiled-tube-type SF6 evaporator to the cold oil inlet. The main-transformation coiled-tube-type heat-dissipating device has huge advantages of safety, reliability, high cooling efficiency, small equipment volume, low oil consumption, less maintenance, economical overall operation and the like, and is a revolutionary innovation of a main-transformation cooling way.