544results about How to "Speed ​​up the cycle" patented technology

A process for controlling a slurry phase (co-) polymerisation process in the presence of a polymerisation catalyst, which comprises maintaining the density SPAN of the polymer powder particles (defined as the absolute value of the density difference in g / cm3 between the average density of the polymer particles exiting the reactor with particle size above D90 and the average density of the material with particle size below D10) below 0.005, preferably below 0.003, more preferably below 0.0026, most preferably below 0.0023.

The invention discloses a method and a device for preparing graphene precursor two-dimension nanoscale graphite powder by adopting an airflow crushing and peeling method. The device comprises an air source system, a crushing and peeling system and a gas-solid separation system; in the crushing and peeling system, an A return pipe, a B return pipe and a riser pipe form a material circulation loop of an airflow crushing and peeling process; an A gas guide pipe, a B gas guide pipe and a C gas guide pipe form an airflow crushing passage of the airflow crushing and peeling process. The graphene precursor two-dimension nanoscale graphite powder is prepared by adopting three supersonic speed jet flows to carry graphite particles together; through collision and friction of strip jet flows, high-purity crushing and peeling of the graphite particles are realized; through circulated and continuous crushing and peeling of the graphite particles, the two-dimension nanoscale graphite powder is obtained. The process is adopted for crushing and peeling the graphite powder, the crushing and peeling of the graphite powder are realized by utilizing mutual collision and friction among the graphite powder, friction of other media does not exist, and thus the two-dimension nanoscale graphite powder with high purity can be obtained.

The invention discloses a method for preparing a high-efficiency micro heat tube by combining copper powder with copper oxide powder. An evaporation section and a condensation section of the heat tube respectively consist of sintered coppers with different porosities, wherein the evaporation section is formed by sintering micron-sized copper powder, and the porosity is within 40-50%; and the condensation section and a thermal insulating section consist of high-porosity sintered coppers mixed, reduced and sintered by millimeter-sized, micron-sized or nanometer-sized copper oxide powder or copper oxide powder with different particle sizes, and the porosity reaches 60-85%. The low porosity and the small aperture of the evaporation section are convenient to quickly vaporize a liquid-phase medium; and the condensation section and the thermal insulating section use the high-porosity sintered coppers as liquid absorbing cores, so that the liquid-phase reflowing heat resistance is low, liquid quickly flows back to the evaporation section, and the phase change circulation is accelerated. The method respectively injects the needed weights of the copper powder and the oxide copper powder through calculation according to the design requirements of the heat tube to produce the heat tube with different porosities and composite structure; the radiating efficiency is greatly improved, the heat resistance is low, and the quick high-efficiency radiating effect is achieved. The method is easy in operation, simple in equipment, low in production cost and suitable for industrialized production.

A paintball marker has an inline cylinder that includes a gas governor that reduces gas flow from a compressed gas source to a valve area when the bolt is in a firing position; this increases efficiency in the marker because only the required air is used to fire the paintball. This bolt operates independent of the valve pin, which increases cycle speed and enables the governor to open and close at an optimum time in the firing cycle. Further, when the bolt / piston is recocking, the gap between the valve pin and governor valve pin enables low pressure gas driving the piston to start pressurizing the cylinder and driving the piston rearwards without resistance from the high pressure gas. The marker also allows a user to remove the inline cylinder without the use of tools, and gives the user a convenient carrying handle for holding the paintball marker, which is commonly called a “snatch grip.”

The invention relates to a rare-earth ferroalloy for producing a rare-earth permanent magnetism material with high performance and a preparation process thereof. The ferroalloy comprises the contents according to the weight percentage: 30-90 of neodymium or didymium rare earth, and the balance ferrum and less than 1 of unavoidable impurities, wherein the O content is less than or equal to 0.1, the C content is less than or equal to 0.1 and the N content is less than or equal to 0.05. The alloy is prepared by an electrolytic method of fluoride molten salt system oxide, and an electrolyte of the alloy comprises rare-earth fluoride and lithium fluoride.

The invention relates to a belt band conveyor such as a curved belt conveyor having an endless transport belt that is guided over deflection rollers. There is a guide element that projects beyond the belt plane wherein this guide element can be handled separately before it is attached to the transport belt. This guide element moves along as the transport belt moves, and on whose guide surfaces, which extend in the transport direction of the transport belt has running surfaces that are inclined relative to the belt plane roll off from rotating guide rollers as the transport belt moves. Thus, lateral forces that occur crosswise to the transport direction of the transport belt can be compensated. A plurality of separate guide shoes are attached to the transport belt, forming a guide strip for the guide rollers that extends in the transport direction, circulates, and is divided into multiple parts.

A forage for improving later-period production performance of laying hens and eggshell quality comprises, in parts by weight, 45-50 parts of corn, 10-15 parts of soybean meal, 8-12 parts of wheat, 5-10 parts of corn germ cake, 3-6 parts of alfalfa meal, 4-6 parts of calcium particles, 4-6 parts of brewer's grains, 3-5 parts of calcium powder, 2-4 parts of corn gluten meal, 0.5-1 part of calcium hydrogen phosphate, 0.1-0.2 part of bentonite, 0.2-0.4 part of plant grease, 0.0005-0.0008 part of betaine, 0.2-0.4 part of edible salt, 0.2-0.4 part of lysine, 0.1-0.2 part of composite vitamins, 0.1-0.2 part of choline, 0.1-0.2 part of composite trace elements, 0.1-0.2 part of sodium bicarbonate, 0.1-0.2 part of methionine and 0.002-0.006 part of phytase. The forage is capable of satisfying nutrition demands of laying hens at a later period, improving laying rate and eggshell thickness, and improving eggshell quality.

The invention provides a copper electrolysis system which comprises an electrolysis tank, a cooling device, a driving device, an electrolyte storage tank and a conducting bar, wherein a liquid supply device is arranged on an inside wall of the electrolysis tank; an outlet of the driving device is connected with an inlet of the cooling device; the outlet of the cooling device is connected with a liquid supply pipeline of the liquid supply device; an electrolyte draining port of the electrolysis tank is connected with the inlet of the electrolyte storage tank; the outlet of the electrolyte storage tank is connected with the inlet of the driving device; the conducting bar is arranged at an upper edge of the electrolysis tank; and a conductive rod of a cathode and a hanging lug of an anode are respectively lapped with the conducting bar. Due to the cooperative use of the electrolysis tank, the cooling device, the driving device and the conducting bar, the copper electrolysis system provided by the invention causes the current density to be higher and the electrolysis tank voltage to be lower during a copper electrolysis, so that the yield of copper is higher and the energy consumption is lower.

The invention discloses a making method of intermediate alloy of high rare earth magnesium, which is characterized by the following: adding RE-O and MgO in the REF3-LiF or REF3-MgF2-LiF fusing salt system; electrolyzing; proceeding eutectoid; making the product with high receiving rate.

The present invention discloses a cabinet cooling system for servers of a cloud computing computer room. The cabinet cooling system comprises a closed cabinet; the cabinet is used for placing server chassis; Hot air exhaust pipes are arranged at one sides of the server chassis and cold air boxes are arranged at the other sides of the server chassis; an air conditioning cold wind outlet is connected with a cold wind flow pipeline; the cold wind flow pipeline is connected with a plurality of cold wind conveying pipes by a cold wind flow dividing apparatus; the cold wind conveying pipes are connected with the cold air boxes; electromagnetic control valves are arranged on all the cold wind conveying pipes; a unidirectional centrifugal fan is arranged on the cold wind flow pipelines; a wind inlet frequency converter is mounted on the unidirectional centrifugal fan; a hot air fan is arranged at the upper part of the cabinet; a wind outlet frequency converter is arranged on the hot air fan; and the signal input ends of the wind inlet frequency converter, the wind outlet frequency converter and the electromagnetic control valves are all connected with a controller. The cabinet cooing system has a simple structure, is convenient and rapid to mount, efficiently solves the problems of overheated local parts and hot spots of the servers, has good radiating and cooling effects and ensures safety and reliability of operation of the servers.

The invention provides a variable-parameter liquid absorption core ultrathin heat pipe. Small-bore and high-porosity structures (201) are adopted in the areas on the two sides, in the width direction, of a liquid absorption core (2). A large-bore and small-porosity structure (202) is adopted in the area in the middle, in the width direction, of the liquid absorption core (2). According to the small-bore and high-porosity structures (201) of the areas on the two sides of the liquid absorption core (2), when the heat pipe works, a gas-liquid interface area in the liquid absorption core can be enlarged, the flow of working media participating in the evaporation and condensation process is increased, and the capillary drive force of the area is improved; meanwhile, by means of the large-bore and small-porosity structure of the area in the middle, the amount of working medium liquid stored in the liquid absorption core is increased, the resistance for the working media flowing to the two sides of the liquid absorption core is lowered, and working medium liquid can be supplemented to the areas on the two sides more easily; and the circulating speed of gas-liquid working media is increased, and efficient running of the ultrathin heat pipe is achieved.

The invention discloses a micro-motion function and hydraulic brake control system of a wheeled dozer, and belongs to the field of wheeled dozers. The micro-motion function and hydraulic brake control system comprises an oil tank, an oil suction filter, a gear pump, a high-pressure filter, a prefilling valve, a micro-motion oil cylinder, a left pedal valve, a pressure switch, a brake valve set, a right pedal valve, a shuttle valve set, a rear axle brake, a front axle brake and a parking brake. Through the left pedal valve (micro-motion function pedal valve), a driver can effectively control tire drive force by combining the condition that the tire drive force ranges from 0 percent to 100 percent, wheel slipping is avoided, tire abrasion is reduced, and therefore engine power can be effectively utilized, oil consumption can be reduced, and circulating speed can be improved. According to the micro-motion function, the tire drive force is effectively controlled, meanwhile, emergency braking can be achieved through a service brake, and the reliability and running safety of a brake system are obviously increased. Main elements of the control system are integrated on the brake valve set, pipe connection is simplified greatly, and pipe arrangement is more reasonable.

A molding process of composite material including high-thermal-conductor and room-temperature magnetic refrigerant comprises the steps of nesting magnetic refrigerant with high-thermal-conductor and connecting them mutually, especially making the room-temperature magnetic-thermal-conductor into sheet, strip or filament, inserting the high-thermal-conductors'sheet, strip or filament in the room-temperature magnetic refrigerant's sheet or filament and connecting them fully. This invention has solved the application of the room-temperature magnetic-thermal-conductor, particularly the application of the room-temperature magnetic-thermal-conductor which is lower thermal-conductor, easier oxidation and powdering. The invention utilizes the high thermal-conductor to solve the problem of room-temperature magnetic refrigerant which is poor in conventional heat exchange, meanwhile decreases the loss of the magnetic-thermal effect.

The invention discloses a power generating device by waste heat of automobiles. A plurality of novel alloy bars are attached to the inner side of a circular iron hose of a power generator, coils are mounted between adjacent novel alloy bars and arranged in coil slots formed by adjacent novel alloy bars in a surrounded manner, heat and cold exchange holes are arranged on the novel alloy bars, an elongated rare earth magnet is attached on an outer face side of each alloy bar, magnetic polarities of the rare earth magnets on the face sides of the adjacent novel alloy bars are opposite, the other magnetic polarity surfaces of the rare earth magnets are wrapped on steel pipes, and the power generator is provided with an outer casing. The novel alloy bars are non-magnetic substances at a certain low temperature while are magnetic substances at a certain high temperature. When the rare earth magnets are close to the novel magnetic alloy bars, magnetism of the novel magnetic alloy bars is doubled. The novel alloy bars have magnetism after being heated by tail gas or a heat medium liquid in a cylinder liner of an automobile and have no magnetism after being cooled by cold air with water mist or refrigerant liquid, and high alternating current can be produced in the coils by repeating the above steps and can be used as power force for electric automobiles.

The invention discloses an airlift internal loop slurry-bed reactor. The airlift internal loop slurry-bed reactor comprises a shell, a guide cylinder, a gas distributor, a gas-liquid separation apparatus, a bottom inlet, a top outlet and a slurry bed layer, the gas-liquid separation apparatus, the guide cylinder and the gas distributor are arranged in the shell from up to down in order, the annular space of the guide cylinder and the inner wall of the shell are filled with the slurry bed layer, and the guide cylinder comprises an upper baffling section and a lower straight-tube enclosing section. According to the invention, the upper part of the guide cylinder is designed as a baffling communication section, the gas-liquid separation effect of the reactor is increased, circulation of a slurry in the guide cylinder and the slurry out of the guide cylinder is promoted, so that the problems that when the operating gas velocity is high, the slurry back-mixing and mist entrainment are generated can be avoided, the reaction efficiency, purity of the products and the stability of a catalyst are indirectly increased, and the energy consumption and investment of the reactor are reduced.

The invention relates to guide plates and a flat type biological reactor using the same and an arrangement method. The guide plates are guide plates with wave-shaped structures. According to the flat type biological reactor with the guide plates with the wave-shaped structures, a pair of guide plates with the wave-shaped structures is arranged in a reactor tank body symmetrically, and an upper end opening and a lower end opening which are formed by the two guide plates with the wave-shaped structures are horn-shaped openings which are expanded outwards. The arrangement method for the guide plates comprises the following steps of: determining the ventilatory capacity or ventilating speed of the flat type biological reactor according to the demand of the growth of cultured organisms to obtain a ventilating ratio R, namely R is equal to V1 / V2, wherein V1 is the volume of gas introduced into the reactor for 1 minute, and V2 is the volume of an actual culture solution in a cylindrical biological reactor; and determining the wave periodicity and amplitude of the guide plates with the wave-shaped structures according to the obtained ventilating ratio, and arranging the guide plates in the reactor tank body. By the guide plates and the flat type biological reactor using the same and the arrangement method, the number of times of mixing liquid can be increased, the effect of mixing the culture solution in the reactor can be improved greatly, the utilization efficiency of light energy can be improved, and mass transfer between gas and liquid can be improved greatly.

Process for polymerising an olefin monomer in at least one continuous tubular loop reactor of a multiple reactor system, optionally together with an olefin comonomer, in the presence of a polymerisation catalyst in a diluent, to produce a slurry containing solid particulate olefin polymer and diluent. The average internal diameter of at least 50% of the total length of the continuous tubular loop reactor is at least 700 mm. A high molecular weight (HMW) polymer is made in a first reactor and a low molecular weight (LMW) polymer is made in a second reactor, the first (HMW) reactor having a space time yield (defined as production of polymer in kg / h per unit volume of reactor) greater than 100 kg / m3 / h, and the ratio of space time yield in the first (HMW) reactor to the second (LMW) reactor is greater than 1.

The invention discloses a solar energy-driven coal pyrolysis coupling coalite gasification reactor and a method. The reactor mainly comprises a lifting pipe, a cyclone separator and an annulus inner circulation fluidized bed, wherein an outlet of the lifting pipe is connected to the cyclone separator, and the lifting pipe and the cyclone separator are arranged inside the annulus inner circulation fluidized bed; the lifting pipe is located at the center of the annulus inner circulation fluidized bed, a pipe wall of the lifting pipe is parallel to the wall surface of the annulus inner circulation fluidized bed, and an inlet of the lifting pipe extends out of the bottom of the annulus inner circulation fluidized bed for a distance; an air distributor is arranged at the bottom of the lifting pipe, and a coal feeding pipe is connected to the side wall of the lifting pipe; the top of the annulus inner circulation fluidized bed is provided with a light inlet window, the outer wall of the annulus inner circulation fluidized bed is coated with a heat insulation layer, and the bottom of the annulus inner circulation fluidized bed is provided with an annular air distributor.

A high speed parallel manufacturing line for manufacturing insulated glass units, the manufacturing line including a front conveyor system, a back conveyor system, a shuttle mechanism that distributes glass lites to the front conveyor system and the back conveyor system, an insulated glass unit spacer applicator having a spacer dispensing head configured to apply perimeter spacer material to one of the glass lites, the spacer head being proportionally movable relative to the glass lite as the glass lite is conveyed on the front conveyor mechanism to apply the perimeter spacer material to create a spacer applied lite and a gas press. A secondary edge sealing unit has a first secondary edge sealing head and a second secondary edge sealing head, each of the first secondary edge sealing head and the second secondary edge sealing head applying edge sealant to portion of a perimeter of an insulated glass unit.

The invention provides far-infrared anion coating glue which comprises, by weight, 20-30 parts of far-infrared anion powder, 20-30 parts of emulsion paint, and 20-30 parts of white emulsion, wherein the far-infrared anion powder is tourmaline powder or a mixture of the tourmaline powder and leucoxene powder, and the leucoxene powder accounts for 5-10% of the mixture, or the far-infrared anion powder is germanite powder or bowlder powder or a mixture of the bowlder powder and the germanite powder, and the germanite powder accounts for 10-30% of the mixture. The far-infrared anion coating glue can provide high-content anion and far infrared rays, and can be coated on cloth surfaces, manufactured into physical therapy coated fabric and heated through an electric hot water bag, a hot water bottle, a hand warming unit, an electric blanket and the like at temperature of 42-45 degrees which are the best therapy temperature for the far infrared rays. The preparing process is simple, content of far infrared powder is high, crazing and dissolution of a glue coating layer does not happen, a heat collecting function is good, and the best physical therapy effect for illness and pain can be achieved when the far-infrared anion coating glue contacts with skins and is used for curing affected parts.

The invention relates to a wallpaper printing system and belongs to the technical field of printing machines. The wallpaper printing system comprises a preheating mechanism, an embossing mechanism, a cooling mechanism, a tension mechanism, a winding mechanism and a machine frame. The preheating mechanism comprises a preheating cover and a heating roller, the preheating cover is arranged on a working surface of the heating roller, the embossing mechanism comprises a press roller and an embossing roller, and the press roller and the embossing roller are parallelly arranged and located on a discharging port of the preheating mechanism. Hot oil single-side inflow and outflow are adopted according to the preheating mechanism for the wallpaper printing system, the number of components in heat exchange with hot oil is reduced, and heat efficiency is improved; according to the preheating mechanism for the wallpaper printing system, an oil guide sleeve is adopted, the area of the hot oil in the heating roller is reduced, the circulation speed of the hot oil is accelerated, and the temperature of a roller can be kept constant to the largest extent.

The invention relates to a detachable turbine air purifier. According to the purpose, the detachable turbine air purifier should have the beneficial effects of being high in purifying efficiency and low in energy consumption. According to the technical scheme, the detachable turbine air purifier comprises an air inlet chamber and a purifying chamber. The air inlet chamber comprises a lower shell, a connecting cover arranged on the top of the lower shell and connected with the purifying chamber, and an air inlet mechanism arranged in an inner cavity of the lower shell and used for feeding air into the purifying chamber. The top of the lower shell is provided with an opening, and multiple first-level air inlet holes are formed in the side wall of the lower shell. The cross section of the connecting cover is gradually reduced from bottom to top. An air inlet in the bottom of the connecting cover is in butt joint with the opening in the top of the lower shell, and an air outlet in the top of the connecting cover is in butt joint with a bottom plate of an upper shell. The purifying chamber comprises the upper shell and a purifying assembly arranged in an inner cavity of the upper shell and used for cleaning air; a top plate of the upper shell is provided with air outlet holes; and jet flow holes communicating with an inner cavity of the connecting cover and multiple second-level air inlet holes formed in the peripheries of the jet flow holes are formed in the bottom plate of the upper shell.

The related loop reactor for coal direct liquefaction comprises: an outside cylinder, a central tube, a gas distributor, a plurality of magnetic scrapers arranged equally between the cylinder and tube, a magnetic draw device, and a device frame. This invention improves material loop speed and turbulence strength to avoid coking and raise heat / mass transfer efficiency for wide application.

The invention discloses a blueberry fish oil capsule, belonging to the field of foods. The blueberry fish oil capsule is health complementary food, each 500mg of products comprises seven ingredients including blueberry extractive, grape seed extractive, marigold extractive, eyebright extractive, soya bean lecithin, wheat-germ oil and fish oil Omega unsaturated fatty acid. The invention is not harmful for the health of human body, and is a health product for the health of eyes.

The invention provides a method for preparation of light olefins through catalytic conversion by an oxygen-containing compound. According to the method, an oxygen-containing compound raw material is introduced into an internal circulation gas-solid fluidized bed reactor from the bottom of the reactor and contacts with a cracking catalyst in a reaction zone, and the oxygen-containing compound and the catalyst move upward together and undergo alkylation and a cracking reaction; reacted oil gas and a coked catalyst undergo gas-solid separation in a gas-solid separation zone at the upper part of the reaction zone, and separated oil gas is subjected to further separation in a subsequent separating system; the separated coked catalyst is deposited in a steam stripping zone, steam stripping is carried out to remove oil gas adsorbed and carried by the catalyst, a part of the coked catalyst in the steam stripping zone enters into a catalyst descending zone, moves downward and enters into the bottom of the reaction zone for cyclic utilization through a gap at the bottom of the catalyst descending zone; and the other part of the coked catalyst is introduced into a catalyst regenerator for charring and regeneration through an inclined to-be-generated catalyst pipe, and a regenerated catalyst is returned to the internal circulation gas-solid fluidized bed reactor for cyclic utilization. The reactor provided by the invention can be used in the method for preparation of light olefins by using the oxygen-containing compound, and the advantages of simple operation and high yield of light olefins are obtained.

The invention provides a method for preparation of light olefins through catalytic conversion by an oxygen-containing compound. According to the method, an oxygen-containing compound raw material is introduced into an internal circulation gas-solid fluidized bed reactor from the bottom of the reactor and contacts with a cracking catalyst in a reaction zone, and the oxygen-containing compound and the catalyst move upward together and undergo alkylation and a cracking reaction; reacted oil gas and a coked catalyst undergo gas-solid separation in a gas-solid separation zone at the upper part of the reaction zone, and separated oil gas is subjected to further separation in a subsequent separating system; the separated coked catalyst is deposited in a steam stripping zone, steam stripping is carried out to remove oil gas adsorbed and carried by the catalyst, a part of the coked catalyst in the steam stripping zone enters into a catalyst descending zone, moves downward and enters into the bottom of the reaction zone for cyclic utilization through a gap at the bottom of the catalyst descending zone; and the other part of the coked catalyst is introduced into a catalyst regenerator for charring and regeneration through an inclined to-be-generated catalyst pipe, and a regenerated catalyst is returned to the internal circulation gas-solid fluidized bed reactor for cyclic utilization. The reactor provided by the invention can be used in the method for preparation of light olefins by using the oxygen-containing compound, and the advantages of simple operation and high yield of light olefins are obtained.

The invention provides a squeeze film damper bearing, which comprises a hollow cylindrical bearing body, wherein the bearing body comprises outer bearing rings and inner bearing rings; an annular groove is formed on the inner ring surface of the inner bearing ring on at least one end part of the bearing body, and is outwards extended axially from the inner ring surface and radially along the inner ring; moreover, oil discharge grooves used for providing channels for lubricating oil to flow out of the inner ring surface are formed along an axial direction of the bearing body on the inner ring surface. The squeeze film damper bearing provided by the embodiment of the invention reduces a contact area between a main shaft and the inner bearing ring at the same time of ensuring an effective bearing area, and can achieve reduction in sensitivity to oil temperature and an improvement on the working stability. Moreover, the oil discharge grooves are formed on the inner ring surfaces so as to increase the circulation speed of the lubricating oil and the utilization rate of the lubricating oil, further improve the heat removal and temperature reduction capability of the bearing and achieve a better heat removal effect.

The invention discloses a preparation method of a fresh water composite microorganism bottom modifier. The preparation method comprises the steps of preparation of a fermentation culture medium, fermentation, adsorption and crosslinking. The method comprises the following specific steps: firstly, mixing bran powder, corncob powder, starch wastewater and a fermentation synergist to obtain the fermentation culture medium; introducing a mixed bacterial solution of rhodococcus erythropolis, saccharomyces cerevisiae and bacillus subtitles for fermentation culture, and purifying to obtain a microbial flocculant; then, adsorbing sesame straw activated carbon, enzymatic liquid, the microbial flocculant and a microbial preparation; performing crosslinking with a crosslinking agent to obtain the fresh water composite microorganism base modifier. The preparation method has the beneficial effects of easiness and feasibility, higher yield and productive rate of polysaccharides in a preparation process, higher mechanical strength and stability of a final product, and higher mass transfer performance and pelletizing performance. The fresh water composite microorganism base modifier modifies culturing sewage through the three strong effects of fluctuation, enzymatic degradation and microbial degradation, and has the advantages of comprehensive biodegradability, high security, nontoxicity, harmlessness and freeness from secondary pollution.

The invention discloses an efficient cooling transformer which comprises an oil tank and a cooling tank. A first connecting pipe is arranged at the upper end of the oil tank, the lower end of the oil tank is provided with a second connecting pipe, the cooling tank is provided with a ventilation device, and an installation frame is arranged in the cooling tank. A cooling device is fixed onto the installation frame through bolts, the cooling device comprises a cooling pipe and an inner evaporation pipe, the inner evaporation pipe is sleeved with the cooling pipe, a heat absorption working medium flows in the inner evaporation pipe, and a gap allowing transformer oil to circulate is formed between the cooling pipe and the inner evaporation pipe. The cooling pipe comprises an oil inlet end and an oil outlet end, the oil inlet end stretches out of the cooling tank to be connected with the first connecting pipe of the oil tank in a flanged mode, the oil outlet end stretches out of the cooling tank to be connected with an oil pump, and the oil pump is connected with the second connecting pipe of the oil tank in a flanged mode. The inner evaporation pipe is connected with a refrigeration mechanism, the refrigeration mechanism comprises a compressor, a continuous-U-shaped condensation pipe and a throttling valve, and the ventilation device comprises a through hole formed in the inner wall of the cooling tank and a fan arranged in the through hole. The efficient cooling transformer is good in heat dissipation effect and high in heat dissipation circulation speed.