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1522results about How to "Increase disturbance" patented technology

Heat exchange provided with sharp structure out of pipe

The invention provides a heat exchanger. The heat exchanger comprises a pipe pass side and a shell pass side; the pipe pass side includes an inlet pipe, an inlet cavity, a heat transfer pipe bundle, an outlet cavity and an outlet pipe; a hot fluid enters the inlet cavity from the inlet pipe to pass through the heat transfer pipe bundle, the outlet cavity and the outlet pipe in sequence; the shell pass side includes an inlet channel, an inner shell, an outer shell and an outlet cavity; a cold fluid passes through space limited by the inlet channel, the inner shell and the outer shell and the outlet cavity in sequence; the inlet cavity, the heat transfer pipe bundle and the outlet cavity are arranged in space limited by the inner shell and the outer shell; a metal rod outwards extends from the outer wall of the heat transfer pipe bundle; the end part of the metal rod is a sharp structure; and the direction from the outer wall of the heat transfer pipe bundle to the end part of the metal rod is opposite to the flowing direction of the cold fluid. The rod with the sharp end part is arranged at the external of the heat exchange pipe; in flowing of a gas-liquid two-phase flow, on the one hand, the laminar flow bottom layer can be broken, and the heat transfer area is increased for forced heat transfer; because of the rod, the flowing resistance is low, and the shell pass flowing resistance cannot be increased; and as the sharp end part is provided, bubbles can be punctured to realize increment of a gas-liquid interface and a gas-phase boundary layer and reinforcement of the disturbance.
Owner:NUCLEAR POWER INSTITUTE OF CHINA

Biology processing apparatus capable of processing sewage at low-temperature with low carbon-nitrogen-ratio in cold region and method for processing sewage at low-temperature with low carbon-nitrogen-ratio in cold region

The invention relates to a biology processing apparatus capable of processing sewage at low-temperature with low carbon-nitrogen-ratio in a cold region and a method for processing sewage at low-temperature with low carbon-nitrogen-ratio in the cold region, which relates to the biology processing apparatus for processing sewage and the method for processing sewage. According to the invention, problems that the ratio of carbon source and nitrogen source of sewage in winner at the cold region is low, the synchronization nitrogen and phosphorus removal efficiency in the current sewage processing technology is low, the index of nitrogen and phosphor in a processed effluent can not reach the standard can be solved. The apparatus comprises a water storage tank, a pre-conditioning hypoxia pool, an anaerobic pond, an anoxic pool, an aerobic tank, a sedimentation basin, an aeration head, a filling material, a stirrer, a water inlet pump, a reflux pump, a valve, an outlet pipe, a sludge discharge pipe and a residual sludge discharge pipe; The method comprises the following steps: 1)culturing microbe on a filling material; 2)adjusting operation parameter; 3)adjusting reflux ratio parameter; 4)passing the sewage through the pre-conditioning hypoxia pool, the anaerobic pond, the anoxic pool, the aerobic tank and the sedimentation basin for processing to obtain the processed water. The apparatus and the method can be used for construction and reconstruction of the sewage processing technology at low-temperature with low carbon-nitrogen-ratio in a north region.
Owner:HARBIN INST OF TECH

Sludge drying apparatus and sludge drying method using the same

The invention relates to a sludge drying device and a sludge drying method thereof, wherein, the device comprises a closed transparent glass shell, a plurality of layers of tray stents transversely arranged in a shell, a feed inlet arranged on the transverse side wall of the shell corresponding to each layer of tray stent, a discharge outlet on a side wall corresponding to the feed inlet, a seal plate with transparent glass which can be disassembled and connected with the outer surface of the shell and can respectively seal the feed inlet and the discharge outlet, a material tray which can freely pass through the feed inlet and discharge outlet or is arranged on the tray stent, rectifier fans respectively arranged at the bottom and top of the shell, an air inlet which is arranged at the lower part of one side of the shell, a transparent glass seal-board which is articulated with the top of the air inlet and is matched with the air inlet, a rain insensitive device arranged on the air inlet, an air outlet pipe on the side wall of the shell corresponding to the air inlet, a matched ventilation fan, and a humidity automatic monitoring device which is arranged in the shell and controls the open and close of the ventilation fan.The product discharges the vapor of the sludge to outside to achieve fast drying.
Owner:EVERBRIGHT ENVIRONMENTAL PROTECTION TECHCAL DEV BEIJING +2

High-temperature material vertical cooler and waste heat using system

The invention relates to a high-temperature material vertical cooler and a waste heat using system. The high-temperature material vertical cooler comprises a cylindrical machine body supported by a support, the lower portion of the machine body is a cold air input section, the middle portion of the machine body is a cooling section, and the upper portion of the machine body is a material input section. In the cooling section, materials are cooled by means of combination of air draft and air blowing, heat of the high-temperature materials is obtained by cooling air and a cooling pipe by means of heat conduction and conversion, and preheating is conducted on circulating water through a water cooling wall; the high-temperature cooling air is used for overheating steam generated by the vertical cooler and after the temperature of the cooling air is decreased, the cooling air is led to preheat sintering raw materials in a sintering machine; after air heated by a condenser is mixed with the cold air and the air is led to a central funnel cap; steam generated by the vertical cooler is led to a turbine to drive an electric generator to generate power after passing through a steam super-heater; water output by the condenser and a steam pocket is led to a deoxidizing machine for deoxidization and then is led to a water cooling wall so that circulation can be achieved. The high-temperature material vertical cooler is compact in structure, capable of greatly reducing air leakage of a system, guaranteeing the quality of the materials and effectively recycling the waste heat of the high-temperature materials in a stepped mode.
Owner:XI AN JIAOTONG UNIV

Injection mould with specially-shaped conformal cooling water channel and manufacturing method thereof

A disclosed injection mould with a specially-shaped conformal cooling water channel comprises a mould body provided with a cavity, and the mould body is inside provided with the inbuilt conformal cooling water channel with the profile phase consistent with that of the cavity. The invention also provides a manufacturing method for the injection mould with the specially-shaped conformal cooling water channel. The method comprises the steps: employing a selective laser melting molding technology to manufacture the conformal cooling water channel from a metal powder material; fixedly arranging the conformal cooling water channel in a casting chamber for casting the mould body; employing a casting molding technology to cast the molded mould body from melt single metal or metal alloy; and processing the cavity in the mould body. The conformal cooling water channel is manufactured by directly employing the selective laser melting molding technology, and the manufacturing process is not influenced by the complexity of the conformal cooling water channel. The cooling water channel employs a specially-shaped water channel, so that a turbulent flow is easily formed, the heat conduction effect is enhanced, and processing is convenient.
Owner:SOUTH CHINA UNIV OF TECH

Vertical tube type falling-film evaporator

The invention relates to a vertical tube type falling-film evaporator. The vertical tube type falling-film evaporator comprises an upper tube box, a lower tube box, a casing, multiple heat exchange tubes, an upper tube plate and a lower tube plate, wherein a solution inlet and a secondary steam outlet I are arranged at the upper tube box, a concentrated liquid outlet and a secondary steam outlet II are arranged at the lower tube box, a steam inlet is arranged at the upper part of the casing, and a condensed water outlet is arranged at the lower part of the casing; a film distributing device used for distributing a solution on the inner walls of the heat exchange tubes is arranged in the upper tube box; the film distributing device comprises a liquid bearing plate, a liquid feeding plate, a liquid distributing plate and liquid guiding tubes. By means of a steam stripping effect generated by secondary steam and liquid films, the heat transferring push force and the evaporation efficiency are increased. The liquid films can be uniformly distributed by the film distributing device, the film forming is stable, the wall drying phenomenon is avoided, the recovery rate of secondary steam produced in an evaporator is high, the recovery is convenient, and the heat transferring efficiency is improved.
Owner:LUOYANG SUNRUI SPECIAL EQUIP

Novel high-efficiency vaporizing combustion compound furnace grate device with slag disintegrating function

The invention discloses a novel high-efficiency vaporizing combustion compound furnace grate device with a slag disintegrating function. The traditional incinerator has the disadvantages of lower heat efficiency and high repairing and maintenance cost of a furnace grate due to poor fuel mixture and insufficient combustion. The novel high-efficiency vaporizing combustion compound furnace grate device with the slag disintegrating function adopts a two-section compound structure, wherein on the front section of a reciprocating type furnace grate, wastes are dried, vaporized and partially burned; and the unburned parts fall on a back-end rotary furnace grate device to be extruded, crushed and fully mixed to be burned completely. The reciprocating type furnace grate adopts a multi-air-port segmental air distribution way for reasonable air distribution; the heat radiation on the furnace grate is increased due to a long back arch, thereby facilitating the firing of wastes with low heat values. The novel high-efficiency vaporizing combustion compound furnace grate device with the slag disintegrating function is adopted to effectively improve the disadvantages of poor mixing effect and low burn-off rate of the traditional furnace grate incineration device, and meanwhile, the area of a furnace grate bar with high temperature resistance can be reduced, and the investment is reduced.
Owner:ZHEJIANG UNIV

Waste incineration boiler

InactiveCN101852438ASuitable for a wide range of calorific valueGreat load adjustment capabilityIncinerator apparatusAir preheaterCombustion chamber
The invention discloses a waste incineration boiler. The waster incineration boiler mainly comprises a hearth and a combustion chamber, three flues and a tail flue which are connected to the hearth sequentially, wherein the upper part of the hearth is provided with a boiler barrel, and the lower part of the hearth is provided with a grate; and a slag and ash discharging device is arranged on the lower part of the grate. The waste incineration boiler is characterized in that the grate is a reciprocating multi-row grate; an auxiliary burner is arranged on the side wall on the lower part of the hearth; a start-up burner is arranged on the rear wall on the lower part of the hearth; and a high-temperature gas-air preheater and a superheater are respectively arranged in the three flues from bottom to top sequentially. The invention makes household waste with low heating value, high moisture content and high ash content sufficiently combusted and burnt out in the waste incineration boiler. The waste incineration boiler can effectively inhibit generation of harmful gas. Steam generated by the boiler is used for generating electricity and supplying steam. The waste incineration boiler realizes reduction, hazard-freetreatment and recycling of waste treatment furthest.
Owner:WAI MING ENVIRONMENTAL PROTECTION EQUIP

Cleaning, disinfecting and drying device of B-scan ultrasonography probe

The invention provides a cleaning, disinfecting and drying device of a B-scan ultrasonography probe. The cleaning, disinfecting and drying device comprises a case body and a case door. A drying device, a sliding rail, two carrying plates, an aeration device, an ultrasonic wave generator, a water outlet pipe and two supporting plates are arranged on the case body. The drying device comprises a blower, a blowing channel and an electric heater case. A heating wire bearing plate and an air outlet pipe are arranged in the electric heater case. A water tank is placed on each carrying plate. The supporting plates are fixedly welded at the top end of the case body. A manual rotating shaft is arranged on the supporting plates. A limiting hole is formed between the two supporting plates. A winding shaft is arranged on the manual rotating shaft. A pulling rope is wound around the winding shaft. The pulling rope penetrates through the limiting hole. A lifting rod is arranged at the lower end of the pulling rope. Sliding blocks, connecting rods and ultraviolet disinfection lamps are arranged on the lifting rod. An observation window and a handle are arranged on the case door. Cleaning is thorough, manual control can be achieved, cleaning, drying and disinfecting are integrated, and efficiency is high.
Owner:河南常青藤信息科技有限公司
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