55results about How to "Little flow fluctuation" patented technology

The invention discloses a continuous decoking method for a thermal plasma reactor. The continuous decoking method is characterized in that in the cleavage reaction process, decoking gas is continuously introduced to react with a coking material so as to finish coke cleaning; the decoking gas is carbon dioxide or a gas mixture of carbon dioxide and hydrogen. According to the invention, the pyrolysis gas flow and composition can't be influenced, the decoking can be conducted continuously, the continuous decoking method has the characteristics of short decoking time and high decoking efficiency, more safety and lower energy consumption; the continuous decoking method is suitable for different thermal plasma reactors and has an obvious cleaning effect for coking materials with different properties and content.

The invention discloses a composite startup burner for a powder coal gasification furnace. The composite startup burner comprises an inner burner and an outer burner which are provided with a front necking end respectively and are coaxially sleeved from the inside to the outside, wherein a cooling water jacket adopting a single-spin mode is arranged on the periphery of the outer wall of the outerburner; the front end of the inner burner is provided with an ignition electrode; and the nozzle of the burner is provided with a supersonic atomization device. The composite startup burner adopts supersonic atomization to ensure that the burner has small fluctuations in fuel and atomization airflow rate, and a little change in outlet speed in a process that the back pressure rises continuously so as to ensure the atomization effect and high-temperature flame far from the head of the burner; the composite startup burner adopts a center ignition mode to save an ignition burner to realize the two-in-one function, and adopts a single-spin cooling mode to ensure that the head of the burner is protected from damage under the condition of high temperature and high pressure to prolong the service life of the burner.

The invention discloses an axial-flow type hydraulic pump with double rows of radial plungers, wherein two rows of plunger groups are arrayed in the pump in parallel, the movements of the plunger groups are not affected by each other, and the space in the pump body is used in the maximum degree. According to the axial-flow type hydraulic pump with double rows of radial plungers, an eccentric shaft drives a star wheel to push the plungers to move, the transmission is realized through rolling friction, so that the axial-flow type hydraulic pump with double rows of radial plungers is simple and reliable; the total output of the pump is the sum of the output abilities of all the plunger groups, so that the delivery capacity is high; a plurality of cylinders work together, so that the output peak values of the cylinders are complementary, and the total flow fluctuation can be lowered obviously; the plungers and the plunger cylinder barrels are independent from the pump body, so that the axial-flow type hydraulic pump with double rows of radial plungers is simple to process, is low in cost, is convenient to assemble and maintain, and can be mounted and demounted quickly; the pump uses axial flow mode, the parts among the plungers, the star wheel, the eccentric shaft, an oil inlet and an oil outlet are sealed, so that the capacity utilization ratio is high.

The invention relates to a ship unloader and belt conveyor process overload control method and belongs to the technical field of ship unloader and belt conveyor electrical control methods. According to the technical scheme, the control method includes the steps that firstly, signal collection is conducted, wherein a belt conveyor instantaneous flow rate signal is input into a ship unloader programmable controller by a belt conveyor programmable controller via an opc communication mode; secondly, signal processing is conducted, wherein the belt conveyor instantaneous flow rate signal is led into a vibration feeder motor control program of the unloader programmable controller; and thirdly, the programmable controller conducts logical judgment, and output includes adjusting of the manual modelocking on-off state of a vibration feeder motor, alarm prompting of an operation interface of a cab, automatic lowering of a frequency set value and lowering of the running frequency of the vibration feeder motor. By means of the ship unloader and belt conveyor process overload control method, flow overload of the belt conveyor is prevented, the phenomenon that the belt conveyor is overloaded for a long time, and consequently production accidents are probably caused is avoided, equipment damage and losses caused by long-time overload of the belt conveyor are reduced, the overload respondingefficiency of the belt conveyor is improved, flow fluctuation of the belt conveyor is reduced, and the production efficiency is improved.

The invention provides a variable-displacement cycloid rotor pump. The variable-displacement cycloid rotor pump comprises a front cover, a rear cover, a pump shell, an outer rotor, an inner rotor, a sealed outer rotor, a sealed inner rotor, a variable disk and a transmission shaft. The front cover and the rear cover are installed at the two ends of the pump shell respectively. The outer rotor and the sealed outer rotor are installed in the pump shell. The opposite end faces of the outer rotor and the sealed outer rotor are tightly attached to each other. The outer rotor is axially located through the variable disk. The sealed outer rotor is axially located through a friction plate. The inner rotor and the sealed inner rotor are installed in the outer rotor. The opposite end faces of the inner rotor and the sealed inner rotor are rightly attached to each other. The inner rotor is fixedly installed at the shaft end of the transmission shaft. The bottoms of toothed sockets of the outer rotor are provided with outer rotor oil channels. According to the variable-displacement cycloid rotor pump, the axial meshing width of multiple tooth space sealing volume is changed by adjusting the axial position of the variable disk through an adjusting bolt, and then the purpose of adjusting flow is achieved; and flow adjustment is convenient and easy. The variable-displacement cycloid rotor pump further has the beneficial effects of being small in size, low in cost and small in flow fluctuation.

The invention discloses a screw pump. The screw pump comprises a pump shell, an end cover packaged on the two ends of the pump shell, a bearing base arranged in the pump shell, a bearing fixedly connected to the bearing base, a driving screw gear arranged at the interior of the bearing and a driven screw gear. The screw pump is characterized in that the driving screw gear and the driven screw gear adopt spiral screw gear mechanisms, and a subsection circular arc which is tangential with the gear side is reserved at the tooth crest of the screw gear; the tooth crest and dedendum of the screw gear are in a circular arc, the tooth crest circular arc and the dedendum circular arc are mutually coincided and seamless, no bottom clearance exists, and the entrap phenomenon is not generated; and the sides of the driving screw gear and the driven screw gear are provided with oil storage tanks. The screw pump provided by the invention has the advantages of low noise, low vibration and low energy consumption, and can be used for completely avoiding the entrap phenomenon of a traditional gear wheel pump, reducing the friction of a gear and bearing, and prolonging the service life of a gear wheel pump.