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

The invention relates to a low noise control valve. The low noise control valve comprises a valve body, wherein a valve plug is mounted in the middle of the valve body by an upper valve seat; a valve cover is mounted on the top of the valve plug; a valve rod is mounted in the middle hole positions of the valve cover and the valve plug; the upper part of an elastic air bag cavity is clamped in the valve plug; the lower part of the elastic air bag cavity is mounted in an inflow flow guide device; the inflow flow guide device is connected with the valve plug by a bolt; a valve sleeve is mounted on the outer end of the inflow flow guide device; the valve sleeve is mounted on a lower valve seat; a sandwich outflow rectifying device is welded on the wall of a valve body outflow pipe. The low noise control valve has the advantages that the structure is compact and reasonable, the installation is convenient, the use reliability is good, the occurrence of cavitation is inhibited, and the pulsating pressure of fluid is attenuated.

The invention relates to the technical field of gas turbines and discloses an inner body slotting type swirl nozzle for a combustion chamber of a gas turbine. The nozzle comprises a conical inner body, a shell body and multiple swirl blades, wherein the conical inner body is arranged in the shell body, an annular peripheral air channel is formed between the conical inner body and the shell body, the swirl blades are arranged on the conical inner body in the peripheral direction of the conical inner body, multiple slots are formed in the outer circumference of the conical inner body, and the slots and the swirl blades are arranged in a spaced mode. According to the inner body slotting type swirl nozzle for the combustion chamber of the gas turbine, due to the fact that the multiple slots are formed in the conical inner body, the flowing mode of the inner side of the conical inner body is changed, and the strength of mixed cyclonic air current is reduced and axial speed is increased so as to be matched with fuel concentration and speed distribution on an outlet of the nozzle. The nozzle has the advantages that combustion organization is achieved reasonably and effectively and pollutant discharge is controlled reasonably and effectively.

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 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 centrifugalfan 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.

A vertical cooling furnace and a cooling method thereof belong to the technical field of waste heat recovery process equipment in the metallurgical industry. The vertical cooling furnace, along the material flow direction, sequentially includes: a feeding unit; a furnace chamber, through which the material to be cooled flowing in through the feeding unit enters into the furnace chamber, and a hot air duct is arranged on the furnace chamber, and the hot air duct communicates with the The furnace cavity and the outside; the air supply unit is arranged in the furnace cavity, the air supply unit is suitable for connecting with the air supply unit, and the air supply unit is provided with at least one air outlet; along the height direction, at least a part of the inner wall of the furnace cavity is provided with a depression The concave part extends toward the air supply unit; the cooling method of the vertical cooling furnace includes the following steps: feeding, cooling by heat exchange for the first time, cooling by heat exchange for the second time, and discharging. The vertical cooling furnace and its cooling method can change the gas flow rate and particle flow rate in the furnace cavity, so that the gas-solid heat transfer coefficient in the furnace cavity can be improved, thereby improving the gas-solid heat transfer and increasing the recovery rate of waste heat.

The invention discloses a casting tundish impurity removal and flow control device assembly, which relates to the technical field of metal casting; it includes a weir and a filter vertically arranged in the tundish, the bottom of the weir is provided with a flow-facing inclined surface, and the filter The bottom of the filter is symmetrically provided with two horizontally arranged semi-circular frustum-shaped discharge holes, the upstream surface of the filter is provided with two conical holes, and the backflow surface of the filter is provided with three circular holes. The shape hole and the circular hole are connected by a circular channel; the surface of the weir, the surface of the filter, the circular hole, the tapered hole, the semi-circular truncated discharge hole and the wall of the circular channel are all coated with a layer of micro-nano oxide functional coating. The impurity removal and flow control device component of the casting tundish provided by the invention has high temperature thermal shock resistance, high inclusion removal rate and low cost.

The invention discloses a finned spiral pipe. The finned spiral pipe comprises a spiral pipe with a circular section, wherein a plurality of fins are evenly distributed on the inner wall of the spiral pipe, and the fins have the same spiral structure as that of the lead of the spiral pipe; the sections of the fins are shaped like a fan, and the radius of the section of each fin is equal to that of the circular surface of the inner wall of the section of the spiral pipe.