42results about How to "Change flow pattern" patented technology

The invention relates to a mixed-flow electric dust collector, wherein an air flow distribution plate is arranged at the joint of a dust removing chamber and a smoke inlet; a first vertical electric field and a second vertical electric field, through which an air flow flows, are arranged in the dust removing chamber; parallel dust collecting electrodes are distributed in the electric fields at equal interval; main air flow channels are formed among the dust collecting electrodes; a corona electrode is arranged between adjacent dust collecting electrodes; some of the air flow channels are provided with an incoming air flow baffle at an air flow inlet, and the other air flow channels are provided with an outgoing air flow baffle at an air flow outlet; a plurality of dust collecting electrode plates are arranged on the dust collecting electrodes and fixed in the dust collecting electrode in a separated manner; and the main air flow channels are provided with a plurality of air equalization plates having through holes on the surface at the outlet of the first electric field and baffles at the outlet of the second electric field. With simple structure and few electric fields, the invention solves the problem that the conventional dust collector has poor dust removal effect, large size, complicated structure and high cost.

The invention discloses a hydrogen production system employing reforming technology, in particular to a sleeve type hydrogen enriched fuel hydrogen production system employing reforming technology with highly efficient heat and mass transfer. The system comprises a heat supply unit, a reformer and a CO purification and elimination unit; wherein, the outlet of the reformer is communicated with theinlet of the CO purification and elimination unit through a heat exchanger, the outlet of the CO purification and elimination unit is communicated with the hydrogen inlet of a fuel cell; the heat supply unit has a two-layer sleeve barrel structure, the outer cavity is a combustion heat-providing cavity, the inner cavity is a raw material heating cavity, an enriched fuel inlet, an oxidant gas inlet and a hydrogen inlet are arranged on the combustion heat-providing cavity, the exhaust gas outlet of the fuel cell is communicated with the hydrogen inlet on the combustion heat-providing cavity; the outlet of the raw material heating cavity is communicated with the inlet of the reformer; at least two groups of fins are arranged on the inner wall of the raw material heating cavity axially. The system has reasonable structure, the burning and the heating are uniform, the catalyst is not easy to sinter, the performances of the mass transfer and the heat transfer are good and the energy efficiency is high.

Provided is a seam-penetrating drilling hydrofracturing gas extracting method. The method includes that a target drill hole and a hole for penetrating a coal seam are preset as a hydrofracturing free surface; a chambering section of the target drill hole is expanded, and a sleeve is put into the drill hole, fixed and connected with a separating chamber. High-pressure water enters the fracturing drill hole to fracture a coal body, and a fracturing gap is gradually expanded until the gap is communicated with the hole. The water pressure and water amount are increased, and the coal body around the gap is washed. Water flow carries gas and the coal body to pass through the target drill hole to enter the chamber, the gas is extracted, and separation of the gas is achieved. After the coal body is washed, a macro gap communicating the fracturing drill hole and the target drill hole is formed. During extraction, the gas leaks into the gap, flows into the target drill hole and the hydrofracturing drill hole, and a gas flowing mode is changed fundamentally. The gap is equivalent to extension of the length of the target drill hole and the hydrofracturing drill hole in the coal seam, contact area between the gap and the coal body is increased, and a gas extraction effect can be improved.

The invention provides a device and a method for homogenizing high-temperature melt and belongs to the technical field of melt homogenization. The device provided by the invention consists of three parts, namely a melting tank, a stirring system and a heating system. The detailed steps for homogenizing high-temperature melt carried out by the device provided by the invention are as follows: adding hot silicate slag and quenching-tempering material into the melting tank; after heating to melt the raw material, turning off the power supply; enabling the stirring part of the cooled stirring system to fall into the high-temperature melt, and finishing fall-rise-fall operating actions for stirring the melt in order, wherein the stirring process and the heating process are carried out alternatively; and under the condition that the test result of the samples shows that the composition uniformity and viscosity of the melt are suitable for the process conditions that the fiber is formed or the glass ceramics is prepared, opening a choke plug of the melting tank and making the melt flow out via the flow hole by the gravity of the melt to finish the homogenization process. The homogenizing device and the homogenizing method, provided by the invention, have the advantages of good homogenizing effect, good high-temperature strength and long service life of the stirring part.

The invention relates to drying boxes for a hot-blast air furnace. A humidity-discharging box is arranged in the middle of left and right drying boxes; balanced hot-blast air boxes are arranged at left and right ends of the left and right drying boxes; a waste heat recovery box is arranged on the top of the humidity-discharging box; a tube type heat exchanger is arranged in the waste heat recovery box; the bottom of the tube type heat exchanger is communicated with the humidity-discharging box; a fresh air suction inlet is formed at the front end of the tube type heat exchanger, and an air-collecting box is arranged at the rear end of the tube type heat exchanger; the end part of the air-collecting box is connected with the air inlet of a centrifugal fan; the air outlet of the centrifugal fan is connected with the air inlet of a hot-blast air furnace; and the top of the waste heat recovery box is opening and is used as a humidity-discharging opening. In the drying boxes, a mode of hot-blast air flowing is changed effectively, so that wind resistance is small; and the relatively-small fan can be selected, electricity is saved, the temperature in the drying boxes is uniform, the drying quality is improved, and energy is saved for a considerable part of heat energy is recovered in discharged damp and hot air.

The invention relates to a bent-type rotor cover shell structure inside a centripetal inflow rotor-stator system rotating disk cavity. The bent-type rotor cover shell structure can be applied to the fields such as ground gas turbines and aero-engines. According to the unique characteristics of the bent-type rotor cover shell structure, the bent-type rotor cover shell structure formed through metalplates is applied to the low-radius position inside the rotor-stator system rotating disk cavity, through the light rotor cover shell structure, the rotating ratio of an air flow flowing inwards at the low-radius position is decreased, and thus the purpose that the flowing loss of the air flow in the inward flowing process is reduced is achieved. The bent-type rotor cover shell structure suitablefor the interior of the centripetal rotor-stator system rotating disk cavity has the effects that lightweight is achieved, the structure is simple, the processing cost is low, the rotating ratio of the air flow is reduced, and the air flow pressure in the disk cavity is increased, so that the great prospects of engineering application are achieved.

The invention discloses an outdoor unit body of air conditioner, which belongs to the field of air conditioner. The outdoor unit body of air conditioner comprises a circulation water pump, a gas-liquid separator, a compressor, a brazed heat exchanger, an electrical control box, a condenser fan, a U type condenser, wherein the circulation water pump, the gas-liquid separator, the compressor, and the brazed heat exchanger are arranged at the bottom of the outdoor unit body. The compressor and the circulation water pump are separated from each other. The U type condenser is in the form of internal-thread external-ripple fin and is arranged on the upper part of the outdoor unit body. The electrical control box is arranged on the front part of the U type condenser. The condenser fan is located at the top of the outdoor unit body. The left, right and back of the outdoor unit body are provided with gas inlet channels. Due to the adoption of air inlet and outlet design, condenser design and structure design different from traditional outdoor units of air conditioner, the heat transfer efficiency of the outdoor unit body of air conditioner provided by the invention is greatly improved, and the COP value of the whole machine is more than 3.8.

The invention relates to a laser-induced arc cladding high-boron wear resistant alloy processing method, and a high power arc heat source cooperates with a low power (less than 500W) laser heat source. Through reasonable parameter setting, the heat of the molten high-boron wear-resistant alloy powder is mainly provided by arcs, and the low-power laser has less effect on the melting of the alloy powder, but can stir the molten pool and change the flow mode of the molten pool so as to granulate coarse columnar borides, and to easily obtain a dense structure. At the same time, the main function of the low-power laser is to establish a channel with the arc plasma by the laser photo-induced plasma, thereby improving the stability of the arc and facilitating the improvement of the stability of the process. Moreover, the required laser power is small, and the process cost is saved.

The invention discloses a room temperature wide spectrum photoelectric detector based on a two-dimensional cobalt selenide thin film and a preparation method. A cobalt film with certain thickness is grown by sputtering on a substrate using dual-ion-beam sputtering technology; and on the basis, with cobalt selenide power and selenium powder being reaction source and argon as carrier gas, the cobaltselenide thin film is prepared using chemical vapor deposition method. Metal electrodes in ohmic contact with the cobalt selenide thin film are arranged on the cobalt selenide thin film as a source electrode and a drain electrode, and the photoelectric detector based on the two-dimensional cobalt selenide thin film is constituted. The obtained photoelectric detector based on the two-dimensional cobalt selenide thin film can realize an initial wide spectrum response waveband of 450 nanometer to 10.6 micrometer laser under room temperature, and the response rate reaches 2.58 watt/ampere. According to the provided room temperature wide spectrum photoelectric detector based on novel high-performance two-dimensional materials, the application of two-dimensional cobalt selenide materials is widened in the fields photoelectricity and magnetic-optical technology.

The invention aims to provide an ascending coal gas dust blocker for solving the problems of purifying gas, prolonging the service lives of pipelines and equipment and balancing gas distribution. Dust blocking plates are arranged on a circular shell, air outlets are formed between the dust blocking plates, and the dust blocking plates are 'V'-shaped and bent inwards. The dust blocker is simple in structure and convenient for manufacturing and installing; through the dust blocker, the dust carried in the coal gas can be effectively blocked to a furnace body and discharged together with slag at the up-blowing stage; when the steam passes through the dust blocker at the down-blowing stage, the steam can be uniformly distributed, so that the original steam flowing mode is changed; and by reducing the dust in the ascending coal gas, the coal gas is purified, meanwhile, scouring to an ascending coal gas pipeline and a lining of a dust collector is relieved, safe and stable operation of equipment is ensured, and the operating cost is saved.

The invention relates to the technical field of temperature measurement for a fire or a similar high-temperature air flow, and specifically relates to a multi-thermocouple assembled temperature sensor and a measurement correction algorithm thereof. The multi-thermocouple assembled temperature sensor and the measurement correction algorithm thereof can be used for correcting an error brought about by thermocouple exposed nodes and environmental radiation heat exchange for thermocouple temperature measurement, and eliminate influences imposed on the correction process by turbulent fluctuations of a high temperature air flow based on a heat transfer theory and algorithm, so that the corrected temperature is enabled to be closer to the actual temperature of the air, and turbulent fluctuation conditions of the actual temperature can be provided.

The invention provides a high-temperature waste water waste heat recycling device, and relates to the field of waste heat recycling. The high-temperature waste water waste heat recycling device comprises a base, a heat exchange barrel, two sealing covers and a self-cleaning heat exchange mechanism used for heat exchange, the heat exchange barrel is fixedly connected to the base, the two ends of the heat exchange barrel are each in threaded connection with one sealing cover, the surface of the sealing cover on the left side is sleeved with a waste water outlet pipe, the surface of the sealing cover on the right side is sleeved with a waste water inlet pipe, and the left side of the bottom of the heat exchange barrel is sleeved with a clear water inlet pipe. According to the high-temperature waste water waste heat recycling device, a special structure capable of avoiding dirt adhesion, enhancing the heat exchange effect and rapidly cleaning is designed according to the problems that dirt is prone to being accumulated and difficult to remove in an existing heat exchange device, and therefore the problems that impurities and dye precipitates in printing and dyeing waste water are prone to being adhered to a common heat exchange device, the heat exchange efficiency of a pipeline of the heat exchange device is directly influenced, and the cleaning work is frequent and difficult are effectively solved.

The invention discloses an engine assistant device used for a natural gas extraction technique. The engine assistant device used for the natural gas extraction technique comprises a tank body, a liquid inlet pipe and a liquid outlet pipe, wherein a bent heat exchange pipe is arranged in the tank body; a plurality of spoilers are arranged on the heat exchange pipe; a plurality of separation plates are fixed on the inner wall of the tank body at equal intervals; through holes are formed in each separation plate; the heat exchange pipe penetrates through the through holes; sealing rings are arranged between the heat exchange pipes and the through holes; the space in the tank body is divided into a plurality of air cooling areas which communicate with one another by the separation plates; the side wall of the first air cooling area and the side wall of the last air cooling area are separately provided with an air inlet; and the tank body is provided with an air outlet. According to the engine assistant device, an air flowing path in the tank body is reasonably designed, and air inlet is realized by utilizing the two air inlets, so that resource of cooling liquid is saved, and exploitation cost is lowered; the problem of a traditional air cooler that low-temperature cooling liquid is heated by high-temperature air in the last half flowing path is also avoided; and the heat exchange efficiency is effectively improved.