63results about How to "Reduce space height" patented technology

In an MCM, an optical signal is conveyed by an optical waveguide disposed on a surface of a first substrate to a first optical coupler. This first optical coupler redirects the optical signal out of the plane of the optical waveguide. Then, an optical interposer guides the optical signal between the first optical coupler and a second optical coupler on a surface of a second substrate, thereby reducing spatial expansion of the optical signal between the optical couplers. Moreover, the second optical coupler redirects the optical signal into a plane of an optical waveguide disposed on a surface of the second substrate, which then conveys the optical signal.

The invention provides an ultra-thin even-temperature plate device and a manufacturing method thereof. The device comprises a bottom plate, a capillary core, an upper cover plate and a working medium. A gas-liquid channel integrated design is adopted in the capillary core, a steam circulation space and a liquid backflow channel are arranged on the capillary core in the plane direction, and a solid part of the capillary core is provided with holes for supporting columns to penetrate, the supporting columns are arranged on the bottom plate, the bottom plate is of a groove structure, and the supporting columns are evenly arranged in the bottom plate. The supporting columns penetrate the holes to make contact with the inner surface of the upper cover plate, and welding forming is finished. A liquid filling port is reserved in the bottom plate, and after filling of the working medium, sealing welding is carried out. The manufacturing method of the device comprises the steps of machining of the bottom plate and the upper cover plate, punching forming of the capillary core, vacuum pressurizing diffusion welding, machining margin removing, vacuumizing liquid injecting and the sealing welding process. An even-temperature plate can be manufactured to be of an ultra-thin structure, and the ultra-thin even-temperature plate device and the manufacturing method are particularly suitable for heat dissipation occasions with the strict requirement for the installing thickness space.

The invention discloses a combined drainage device, which comprises a water leakage device (6), wherein the water leakage device (6) is provided with main building siamese and a water collection tank (5); and a drain trap (1) is connected to the water leakage device (6) and is communicated with the main building siamese to form a whole. The combined drainage device is a drainage system, which can integrate the drain traps of a plurality of sanitary fixtures and floor drains in kitchens and toilets into a main water seal device and randomly realize serial connection and parallel connection, and is convenient to arrange and scientific, rational and humanized; positions of the sanitary fixtures, the floor drains and bath facilities in decoration can be randomly determined by users, and are not limited by the positions of the siameses; and the combined drainage device has the characteristics of simple structure, convenient and fast mounting, capability of saving the construction cost of developers, benefits to the state and citizens, low manufacture cost, vast market prospect, and high economic value and application value.

A support beam of truss in tower used for chemical industry is prepared as connecting truss main beam with truss sub beam by support structural unit, connecting two ends of truss main beam to support base and connecting it with wall of tower by debber, hanging two ends of truss sub beam in the air.

The invention discloses a novel oxy-fuel combustion glass melting furnace, which comprises a feed opening part, a melting part, a neck or throat part and a cooling part, wherein the feed opening, the melting part, the neck or throat part and the cooling part are connected with one another in succession; the melting part comprises a melting tank and breast walls arranged on two sides of the melting tank; the melting part is provided with a hot spot along the middle section of the feeding direction of glass liquid; the breast wall on each side of the melting part is at least provided with a flue and an oxy-fuel combustion gun, and the flues on the breast walls on the two sides of the melting part are opposite to each other, and the oxy-fuel combustion guns on the two sides are arranged in astaggered mode; and tank bottom of the melting tank of the melting part is provided with a plurality of pellet-shaped molybdenum electrodes. The novel oxy-fuel combustion glass melting furnace has the characteristics of having a simple structure, being easy to implement, being favorable for improving the heat efficiency of the glass melting furnace, reducing the discharge of NOx pollutants and the greenhouse gas CO2, improving the glass quality, saving the investment cost of the melting furnace, prolong the service life of the melting furnace and the like.

The invention discloses an evaporator assembly and an air conditioner, and relates to the technical field of air conditioners. The evaporator assembly and the air conditioner are invented for solving a problem of difficult air conditioner appearance molding caused by size of an evaporator. The evaporator assembly comprises a housing and an evaporator. The housing is provided with an air inlet and an air outlet. The evaporator is arranged in the housing and is between the air inlet and the air outlet. The evaporator comprises a first evaporator and a second evaporator. One end of the first evaporator is connected with one end of the second evaporator, and the other ends are separated, to form a V-shaped structure. The evaporator assembly can be used for a floor-type air conditioner.

The invention belongs to the coaling field of coke oven vehicles and especially relates to a coaling method for a 7.63m coke oven vehicle. A coal charger charges coal into a coke oven charring room through four helical coal charging devices with the same structures. The four helical coal charging devices are controlled by delay time, and coal charging time of each helical coal charging device is 85 s. First coal leveling is carried out when 85-95% of the pre-coaling amount undergoes coal charging in the coke oven charring room by the four helical coal charging devices; and second coal leveling is carried out when coal charging is completely finished. According to the invention, furnace-mouth gas and smoke leakage caused by too much pressure in the space of the furnace roof is avoided. Meanwhile, coal charging amount of a single coke oven charring room is increased, the space height of the furnace roof is reduced, the temperature of the furnace roof space is decreased, single-hole coke yield is increased, and coke output is raised.

The invention relates to an air heating furnace with nozzles in a pre-burning chamber for reflowing preheating burning by opposed jetting and mixing. Gas and air inlet pipes on a pre-burning chamber wall are connected with gas and air distribution ring channels which are placed in half of the pre-burning chamber wall respectively, the nozzles on the ring channels are communicated with the pre-burning chamber in the pre-burning chamber wall, a hot air outlet pipe is arranged on the pre-burning chamber wall and connected with a burning chamber wall, a heat storage chamber is arranged on the lower portion of the burning chamber in the burning chamber wall, furnace grills and support columns are arranged on the lower portion of the heat storage chamber, heat retainers are arranged in the heat storage chamber, the support columns are placed in a cold air chamber, the heat storage chamber, the furnace grills and the cold air chamber are placed in an air heating furnace wall, the air heating furnace wall and a furnace bottom are fixed, a smoke outlet pipe and a cold air inlet pipe are arranged on the cold air chamber, and the air heating furnace wall is connected with the burning chamber wall in a sleeving mode. According to the air heating furnace, problems of low mixing rates, uneven mixing, low burning intensities, low burning temperatures, incomplete burning, unstable burning and complicated structures are solved.

The invention discloses a curve-type ramp-free overpass, belonging the technical field of public traffic and mainly solving the problems of high spatial height and wide occupation area of the overpass in the prior art. The curve-type ramp-free overpass comprises an arterial road and a secondary trunk road which are mutually crossed and is provided with a curve lane surrounding the arterial road with the secondary trunk road; and the curve lane is communicated with the arterial road. In the curve-type ramp-free overpass provided by the invention, through ingenious design and by utilizing the curve lane, the sheering and turning of the vehicles can be realized on the same layer on the ground, thus not only canceling the ramp, greatly reducing the spatial height and width and greatly simplifying the overall structure of the overpass but also realizing the free traveling of the vehicles at any direction; and after a three-dimensional traffic network is constructed, the traffic capacity can be effectively expanded, thus relieving the phenomenon of traffic jam.

The invention relates to an explosive-proof cabin crane capable of centrally and fixedly arranging a driving device at an end part. The explosive-proof cabin crane is characterized in that three rails are arranged under a cabin ceiling in a longitudinal direction; a double girder bridge is movably connected with the three rails through pulley blocks; a translation trolley is arranged in the middle part of the double girder bridge; a hoisting and lifting driving device and a transverse translation driving device are respectively arranged at both sides of the upper surface of the bottom part of a cabin, a longitudinal translation driving device is arranged in the middle part of the cabin, the hoisting and lifting driving device is connected with a hook assembly on the translation trolley through a steel wire rope and the pulley blocks, and the longitudinal translation driving device is connected with the double girder bridge through a transmission chain, an upper chain wheel assembly and a dragging chain; the transverse translation driving device is connected with two pulleys on the translation trolley through two steel wire ropes and the pulley blocks. The explosive-proof cabin crane has the advantages that by adopting a steel wire rope penetrating and winding manner, the breakthrough of a transmission technique is realized, a following cable of the explosive-proof cabin is not needed, the problem of difficulty in explosion prevention of the cabin crane in dangerous occasions is solved, the installation and maintenance cost of a system is reduced, and the lifting clearance height is increased.

The invention provides a power module and a manufacturing method therefor. The power module comprises a substrate, at least one power device, and an organic heat dissipation mechanism. The substrate is provided with an upper surface and a lower surface. The organic heat dissipation mechanism comprises a plurality of organic heat dissipation convex parts, and the organic heat dissipation mechanism is located at a side of the upper surface or the lower surface of the substrate, so as to conduct the heat generated by the power device to the outside. Because the organic heat dissipation mechanism can manufacture a larger surface area, the organic heat dissipation mechanism can greatly reduce the heat exchange thermal resistance between the organic heat dissipation mechanism and an environment, thereby improving the heat dissipation performance of the heat exchange of the organic heat dissipation mechanism and the environment. Therefore, the power module can reduce the height of the organic heat dissipation mechanism under the condition that the normal heat dissipation of the power module is guaranteed, reduces the occupied space, and is of great significance to the implementation of the miniaturization of the power module.

The invention belongs to the metallurgical equipment field, especially relating to a hydraulic lift-turn mechanism. The invention is characterized in that three sets of expansion connecting rods (3) are arranged around a hydraulic cylinder (12) with the interval of 120 degrees. The terminational cylinder lever of the hydraulic cylinder (12) and the terminational connecting rod of the three sets of expansion connecting rods (3) are fixed on a load platform (1). An upper support guide board (4) and a lower support guide board (2) are arranged on the hydraulic cylinder (12) and the expansion connecting rods (3). The three sets of expansion connecting rods (3) have a main support platform (5) which is connected with the hydraulic cylinder (12) by a bearing (6). A hydraulic motor (9) is fixed by a bracket (11). The output shaft end of the hydraulic motor (9) is provided with a gear, a gear pair (10) and a limit ring (7) which is fixed on the hydraulic cylinder (12) by a binding bolt. The hydraulic motor (9) rotates the gear of the output shaft end to be meshed with the gear pair (10). The invention has the advantages of good reliability, easy maintenance and operation, high control precision, strong carrying capacity and broad application range.

The invention discloses a sterilizing mechanism and a humidifier thereof. The sterilizing mechanism comprises a wet curtain and an ultraviolet radiator, the wet curtain is in the shape of a verticallyarranged barrel, and a cavity is defined in the middle of the wet curtain. The rod-shaped ultraviolet radiator is located in the cavity, and the axis of the ultraviolet radiator coincides with the axis of the barrel-shaped wet curtain. The ultraviolet radiator emits ultraviolet rays to sterilize water on the wet curtain and air in the cavity. The top of the wet curtain is connected with a water trough, and the bottom of the water trough communicates with the wet curtain through a water seepage opening. The bottom of the wet curtain is connected with a water tank, the water tank is connected with a water pump, and the water pump and the water trough are connected through a vertical guide pipe. The water trough and the water tank are made from a transparent material, or the faces, towards the cavity, of the water trough and the water tank are mirror surfaces. The ultraviolet rays are adopted for sterilizing the water on the wet curtain, the air in the cavity and even water in the watertrough and the water tank, and are high in utilization rate and good in sterilizing effect.

The invention provides a mobile vertical compression pit horizontal waste compression station. The mobile vertical compression pit horizontal waste compression station comprises a pit, wherein a mobile press is arranged at the top of the pit, a compression box body and a lifting device thereof are arranged in the pit, a feed inlet is arranged at the top of the compression box body, a discharge outlet is arranged on the front surface of the compression box body, a compression head and a driving device thereof are arranged in the mobile press, and the driving device can drive the compression head to move in the vertical direction in a reciprocating manner; and two sections of guide tracks are respectively arranged at the feed inlet at the top of the compression box body and in the corresponding position on the ground, when the compression box body is positioned in the pit, the two sections of the guide tracks are connected, and matching rolling wheels are arranged at the bottom of the mobile press. The mobile vertical compression pit horizontal waste compression station provided by the invention has the advantages of high degree of automation, good motion control effect and capability of realizing zero pollution emission, and can save space height, occupy small area, save investment cost, realize shorter stroke of a mobile compression oil cylinder, and realize stable and safe operation, convenience in mounting and very low maintenance cost; and the mobile vertical compression pit horizontal waste compression station is rapid in establishment and economic in collection and transportation, has no secondary pollution, and can solve the difficult problem that a built house which is vertically compressed in the past is high.

The invention is applicable to the technical field of chemical fiber filament production and provides an automatic cylinder falling system and a using method thereof. The automatic cylinder falling system is composed of a winding machine, a guide rail, a cylinder falling machine, a filament storing device, a tail filament reversing machine, a transferring machine, a first filament hanging machine,a second filament hanging machine, a filament trolley and a filament trolley positioning and moving device. The system can be used in a spinning equipment technology with opposite tail filament directions of filament cylinders on two spindles, a technology with the same tail filament direction of the filament cylinders on the two spindles, and a technology only with a single spindle full of rolls. The automatic cylinder falling system has the following advantages that the system is simple in structure, convenient to maintain and high in efficiency, and automatic control over the full processof automatically falling the cylinders from the winding position and automatically hanging the filament cylinders onto filament hanging rods on the two sides of the filament trolley can be achieved; for the technology requirement for tail filament reversing, the automatic reversing function of the tail filaments can be achieved; and the system is compact in structure, small in occupied area, low in space height, and suitable for narrow space arrangement of spinning workshops.

The invention discloses a crossflow type waste gas purifying tower which is characterized by comprising a tower body, a water tank and a pump, wherein an air inlet and an air outlet are formed in the tower body; a water spraying layer, a filling layer and a demisting layer are arranged in the tower body; the water spraying layer is provided with a side water spraying pipe, and the filling layer is internally provided with an upper water spraying pipe. Compared with the prior art, the crossflow type waste gas purifying tower has the advantages that the problems of overlarge and overhigh waste gas treatment equipment, halfway treatment and yellow smoke of the prior art under the limitation of equipment putting space are solved; the crossflow type waste gas purifying tower is small in space height, reasonable in structure, attractive in appearance, stable in treatment effect, and low in investment and operation cost.

The invention discloses a powder steady flow discharging device which comprises a shell. A material receiving plate is arranged inside the shell. A gap is reserved between the outer side of the material receiving plate and the shell. A discharging outlet is formed in the lower side of the shell and corresponds to the gap. A pressure-bearing cone is arranged on the material receiving plate. Material guide blades are arranged on the material receiving plate in a sector mode by staggering the circumference of the pressure-bearing cone. A feeding inlet is formed in the upper side of the shell andcorresponds to the material receiving plate. The material receiving plate and the pressure-bearing cone are integrally arranged inside the shell in a rotatable mode. According to the powder steady flow discharging device, the powder material discharging problem is simplified, steady flow discharging can be guaranteed, the wind locking and material locking discharging equipment problem can be solved, processing equipment is simplified, the spatial height is reduced, the processes are simpler, the problem of dust raising points is also solved and the environment is made cleaner.

The invention relates to a chemical tower internal member, in particular to a dual-layer collective liquid distributor with a lateral line withdrawal function. The collective liquid distributor mainly comprises an air lifting cap (1), an air lifting cylinder (2), a liquid collecting ring (3), a vertical ring (4), a liquid collecting groove (5), liquid guiding angle steel (6), a connecting plate (7),a support base (8), a liquid collecting plug (9), a liquid collecting channel (10), a liquid distribution hole (11), an overflow hole (12), a withdrawal pipe (13) and a lacing bar (14), wherein theair lifting cap is V-shaped, and inclines from high to low towards two sides of a tower wall by taking the liquid collecting channel as a central axis; liquid collected by the air lifting cap can flow into the liquid collecting ring smoothly, so that a lateral line liquid phase is easy to extract. The liquid distributor integrates the functions of liquid collection, uniform distribution of liquidand lateral line withdrawal, has the characteristics of saving space in a tower and can be adjusted horizontally and easily.

The invention relates to a medical nursing apparatus. The medical nursing apparatus comprises a back cushion plate, a hinge assembly, an electric push rod module, a motion module and a soleplate; the hinge assembly and the motion module are fixed on the soleplate, the hinge assembly is connected with the motion module by virtue of an electric push rod module, and the back cushion plate is supported by virtue of the hinge assembly and the motion module. Under the electrification state of the electric push rod, the extension and retraction of the electric push rod of a motor is remotely controlled, so that a slide block slides on a linear guide rail, the push rod which is connected with the slide block allows the back cushion plate to have a rising process relative to the soleplate, and an effect of alleviating the fatigue and improving the brain blood supply can be achieved. The medical nursing apparatus capable of alleviating the fatigue and improving the brain blood supply is wide in application range and particularly suitable for mental workers and has characteristics that the blood circulation of the whole body can be promoted, the metabolism is improved, the whole body functions can be activated, the fatigue can be alleviated and the like.

The invention provides a die forging crankshaft and connecting-rod flash cutting die device. A plurality of flash removing devices (3) are distributed on an upper die plate (11), each of the flash removing devices (3) consists of an inner sleeve (4), an outer sleeve (5), a spring (6), an ejection block (7), a guide rod sleeve (8) and a pull rod (9), the outer sleeve (5) is matched with the inner sleeve (4) in a sliding-limiting mode, the spring (6) is installed in the inner sleeve (4) and exerts pressure on the outer sleeve (5), and the lower end face of the outer sleeve (5) is connected with the ejection block (7) through a screw. According to the size and shape of a die forging subjected to flash cutting, two or more flash removing devices (3) are distributed and installed on the upper die plate (11). The flash removing devices (3) are small in size, universal and convenient to adjust and use and is not influenced by the complication degree of die forging shapes and size change.

The embodiment of the invention provides a filter bottle assembly, a valve body assembly, a filter device and a water purifier. The filter bottle assembly comprises a filter bottle, a filter bottle cap, a first reducing sleeve and a filter element; the filter element is provided with a raw water inlet, a sewage outlet and a pure water outlet, the first reducing sleeve sleeves the filter element tomake the sewage outlet positioned in a first cavity between the first reducing sleeve and a pure water outlet tube, the filter bottle cap is fixedly connected with the filter bottle, and the first reducing sleeve is compacted to arrange the filter element in the filter bottle in order to make the raw water inlet positioned in a second cavity among the filter bottle cap, the filter bottle, the first reducing sleeve and the filter element; a valve body has a first open chamber, a second open chamber and a third open chamber, the pure water outlet tube is inserted into the first open chamber, and the inner chamber of the pure water outlet tube is communicated with the first open chamber; the first reducing sleeve is inserted in the second open chamber, and the first cavity is communicated with the second open chamber; and the filter bottle cap is inserted into the third open chamber, and the second cavity is communicated with the third open chamber. The technical schemes provided in theembodiment have simple structures.

A multi-layer hairpin type flat wire winding stator comprises a stator core and a hairpin flat wire wave winding. Stator slots are arranged in the stator core, and the hairpin flat wire wave winding is embedded in the stator slots. The hairpin flat wire wave winding comprises more than two branches. The stator slots where three-phase windings of the hairpin flat wire wave winding are located are arranged in a pairwise spaced mode and sequentially arranged. Any branch is changed to an equivalent slot of the adjacent stator slot after circling by half of layers on the circumference, and long-distance or short-distance connection is adopted when the branch is changed to the equivalent slot of the adjacent stator slot in a cross-layer mode, so that the head end and the tail end of any branch are located on the innermost layer and the outermost layer in the radial direction of the stator. Long-distance or short-distance connection occurs only when cross-layer transposition is performed to equivalent slots of adjacent stator slots, so that the head ends and the tail ends of the branches are located on the innermost layer and the outermost layer in the radial direction of an armature, and a single branch of each phase can pass through equivalent positions of all layers of all the stator slots of the phase where the single branch is located.

The invention discloses a printing device for printing a label on the surface of an industrial product, which comprises a control system and an execution system, and is characterized in that the control system comprises a controller; the execution system comprises a rack and a working table provided with a control pin seat. The label printer also comprises a fixing tool; the rack is internally provided with a cavity; a stepper motor is arranged in the cavity of the rack; the bottom part of the rack is provided with an electromagnet absorber; a punching head or a marking head is arranged on the pin seat in a split mode; the pin seat is fixedly arranged on the side surface of the working table; two positioning strip-shaped orifice plates movably sleeve a mounting bolt; a pin seat mounting plate is a ladder plate; the lower plate part of the ladder plate is connected with a lower plane of the working table; the upper plate part of the ladder plate is fixedly connected with the pin seat; and the mounting bolt is a bolt with four edges cut. The printing device is used for carrying out direct label printing on the surface of the industrial product and modification on the existing label content.

The present invention relates to a numerical control setting machine. The numerical control setting machine comprises a setting frame, an oven and setting mechanisms, and also comprises moving seats and a driving assembly, wherein the moving seats are mounted on the setting frame through a slideway; the setting mechanisms are mounted on the corresponding moving seats, and the setting mechanisms and the oven are located on a same side of the setting frame; the driving assembly drives the moving seats to move back and forth along the setting frame; and the oven is at least provided with an inletfor the setting mechanisms to enter or leave the oven. The driving assembly controls multiple groups of setting assemblies to enter or leave the oven, so that the number of fabrics subjected to setting by drying in machine operation is increased and the production efficiency is improved; and the front and rear groups of setting assemblies enter or leave the oven alternately to finish setting by drying and replacement of the fabrics alternately, so that the utilization rate of the oven is improved, the width and the volume of the oven are reduced, and the energy consumption of the oven is reduced. The numerical control setting machine is simple in structure, convenient to operate, small in overall volume, low in energy consumption and small in setting temperature difference, and meets thesetting requirement of high quality.

The invention relates to a table type full-automatic washing machine which comprises a shell, an outer tub, an inner tub, a motor and a motor shaft. A control panel connected with the motor is arranged on the shell. The motor shaft is connected with a belt wheel. A plurality of water passing holes allowing flowing water to enter and leave are formed in the side wall of the inner tub. The washing machine is characterized by further comprising a transmission shaft and a heating device installed on the shell. A plurality of water passing holes are formed in the bottom of the inner tub. The motor is installed on the inner side of the shell. One end of the transmission shaft is connected with the bottom of the inner tub. The other end of the transmission shaft is connected with the belt wheel. By means of the table type full-automatic washing machine, the inner tub rotates to stir up water flow, the scheme of centrifugally cleaning clothes through the water flow is achieved, the traditional scheme defect of a conventional washing machine that a decelerating clutch and an impeller need to be arranged is omitted, the structure of the washing machine is simplified, and the production cost of the whole washing machine is greatly reduced.

The invention provides a ventilation system and method for a subway equipment room. The system and the method used for solving the problems of complex pipelines, large space requirement, inconvenientmaintenance and poor comfort of an all-air system. A fresh air machine of the ventilation system communicates with an air supply drying pipe, the air supply drying pipe communicates with air supply branch pipes, the subway equipment room communicates with at least one air supply branch pipe, and the air supply branch pipes are provided with air supply openings in the subway equipment room; an exhaust fan communicates with an exhaust air drying pipe, and the exhaust air drying pipe communicates with an exhaust branch pipe; the exhaust branch pipe communicates with a corridor, and a centralizedexhaust port is arranged in the corridor; the air exhaust branch pipe communicates with the subway equipment room provided with a gas fire extinguishing system, and a low-level air exhaust port is arranged in the subway equipment room; the air supply branch pipes and the air exhaust branch pipe are provided with electric control switch valves; and a multi-connection air conditioner is installed ina plurality of subway equipment rooms. The system and the method simplify and optimize the ventilation system for the subway equipment room, more accurately control the room air environment, reduce the pipeline size, reduce the space height and reduce the civil engineering scale.

The invention belongs to the technical field of coal production, and specifically relates to a lifting device for a coke furnace cover. The lifting device solves the problem of interference of a temperature-measuring device and devices on a furnace top that a conventional lifting device has a height higher than a working height and is incapable of meeting the requirements of assembling of an automatic temperature-measuring device on the furnace top of a coke furnace. The lifting device provided by the invention is carried on a carrier which can move relative to the furnace top of the coke furnace, and works in a narrow and small space located at the furnace top of the coke furnace and below a coke furnace coal charger; and the lifting device comprises a mechanism for capturing and releasing of the coke furnace cover. The lifting device provided by the invention can be carried on an automatic temperature-measuring device, and has the characteristics of small height, sufficiently large lift stroke and rapid lifting speed.

A gate-driver-on-array type display panel having a display area includes a plurality of pixel units and a GOA circuit, wherein the pixel units and the GOA circuit are disposed in the display area. The GOA unit set and the GOA trace set are respectively disposed in the pixel units that are in two adjacent rows, and the GOA trace set is electrically connected to two ends of the GOA unit set through a plurality of first signal connecting traces.

The invention discloses a low-pressure-drop liquid collector applicable to a large tower. Parallel rectangular strip holes are formed in the baseboard surface of an oil sump tank, the percentage of opening is 50% or above of the sectional area of the tower, the baseboard is slantly downward in the directions of the strip holes to be completely connected with a tower wall, and the rectangular strip holes are completely connected to a steam raising cylinder wall; the steam raising cylinder wall is in the shape of a strip groove, the cross section in the strip direction is of a regular trapezoid structure, and vertical plates are arranged at two ends; layer tower type top plates are mounted at the upper end of the regular trapezoid cylinder wall respectively, the bottommost plate of the layer tower type top plate stretches out of the regular trapezoid cylinder wall by 10 to 200 mm, and the connecting lines of the inner edges and the outer edges of the layer tower top plates are of umbrella-type structures respectively; two ends of the layer tower type top plate are sealed and connected by using the vertical plates at the two ends of the steam raising cylinder wall or stretch out of the vertical plates at the two ends of the steam raising cylinder wall by 10 mm or above.