165results about How to "Reduce line speed" patented technology

Processing a received optical signal in an optical communication network includes equalizing a received optical signal to provide an equalized signal, demodulating the equalized signal according to an m-ary modulation format to provide a demodulated signal, decoding the demodulated signal according to an inner code to provide an inner-decoded signal, and decoding the inner-decoded signal according to an outer code. Other aspects include other features such as equalizing an optical channel including storing channel characteristics for the optical channel associated with a client, loading the stored channel characteristics during a waiting period between bursts on the channel, and equalizing a received burst from the client using the loaded channel characteristics.

A transmission speed of a protection (backup) line using 1G-OLT unit and 1G-ONU unit is set to be lower than a transmission speed of a working (primary) line using 10G-OLT unit and 10G-ONU unit. A priority and band of each communication service in ONU are preset individually and separately every LLID for a working (primary) line and a protection (backup) line. When bands are allocated to the protection (backup) line, the band allocation is performed so as to secure a minimum number of bands of each communication service. A monitoring controller refers to a predetermined band information table according to an operation state of the working (primary) line or the protection (backup) line with respect to a downstream signal packet.

A process for producing hydrocarbons comprises providing a multi-tubular reactor having at least 100 tubes units containing a catalyst, each tube being between 2 and 5 meters tall and in thermal contact with a cooling fluid; feeding hydrogen and carbon monoxide to each tube at a linear gas superficial velocity less than about 60 cm/s; and converting the gas feedstream to hydrocarbons on the catalyst, wherein the yield of hydrocarbons in each tube is greater than 100 (kg hydrocarbons)/hr/(m³ reaction zone). Each tube may have an internal diameter greater than 2 centimeters. The catalyst may be active for Fischer Tropsch synthesis and may comprise cobalt or iron. The maximum difference in the radially-averaged temperature between two points that are axially spaced along the reactor is less than 15° C., preferably less than 10° C. The catalyst loading or intrinsic activity may vary along the length of the reactor.

A pair of upper and lower pressure rollers 3, 4 is disposed so that their axes 15, 16 are tilted in a horizontal plane in respective directions opposite to each other with respect to a straight line perpendicular to a welding line of a joint portion J. The pressure rollers 3, 4 are positively driven by corresponding electric motors 63, 64 to thereby roll the joint portion. Thus, steps defined at the joint portion can be smoothed and a step gradient can be reduced to ensure a high degree of joint strength.

The present invention relates to a device for burring a front face of a wheel. The device is composed of a rack, a motor, a guide rail, air cylinders, brushes and the like. A sensor enables the wheel to be positioned on a roller way, a clamping air cylinder drives left rolls and right rolls via synchronous gears and gear racks to clamp the wheel, a servo motor drives the wheel to rotate at relatively low speed under the clamped condition, and the rotation direction of the wheel is opposite to that of the brushes; the air cylinders I enable a dust cover to go down, and the motor drives a gear I and a central brush via a shaft II to rotate at relatively high speed; the gear I drives a gear II and a gear III to rotate simultaneously at slightly slow speed, so as to drive an outer ring brush to also rotate at relatively slow speed; and the air cylinders II drive the central brush and outer ring brush to go down, and burring can be performed once the central brush and outer ring brush contact the front face of the wheel. When in use, the device provided by the present invention can burr the central part and the spoke of the wheel at different rotation speeds, and the problem that the traditional big disc brush has low linear speed at the central position when rotating at fixed angular speed is avoided.

According to a process for hot-dip galvanization of the present invention, a steel sheet is treated by the oxidization/reduction method for better quality of galvanization and then hot-dip galvanized. An annealing line of equipment for hot-dip galvanization is composed of a non-oxidizing zone, an oxidizing zone, and a reducing zone, in his order. A steel sheet containing elements liable to oxidize more easily than iron is oxidized by blowing flames onto it in the oxidizing zone according to the oxidization/reduction method. Further, the steel sheet is reduced and annealed in the reducing zone.

The invention relates to a processing method and a specific device for a spiral blade. The processing method of the invention essentially adopts strip shaped materials to form through binding and enwinding. The specific device of the invention consists of a taper roller extruding press and a drag winding machine. An outlet of the taper roller extruding press is arranged correspondingly to an inlet of the drag winding machine. The taper roller extruding press comprises a frame, at least one pair of taper rollers ad a drive device. The conicity of the taper roller is 1 to 15 degrees. Two taper rollers are arranged in the same direction and the axes are in an included angle of 1 to 10 degrees. The bigger head parts of the rollers have a small gap and the drive device is connected with the rollers. The drag winding machine comprises a frame, a rotary shaft, three drag rollers uniformly arranged at the circumferential direction of the rotary shaft and a drive device. The drag rollers are provided with V-shaped slot. The axes of the three drag rollers are parallel to the rotary shaft and arranged in an equal distance on height. The rotating directions of the rotary shaft and the three drag rollers are opposite. The invention omits a plurality of working procedures, improving the efficiency and has a high product precision.

The invention discloses a fixed fluidized bed reactor and a using method thereof. The fixed fluidized bed reactor comprises a top sealing structure and a reactor main body, as well as an outlet pipe and a feeding pipe which are communicated with the reactor main body, wherein the reactor main body comprises a settling section, a reaction section and an oiling agent initial contact section from top to bottom, wherein a coking inhibitor injecting part is arranged at the bottom of the settling section, the coking inhibitor injecting part comprises a frustum-shaped baffle plate arranged in the circumferential direction of the inner wall of the bottom of the settling section, an annular filter plate for connecting the top of the frustum-shaped baffle plate with the inner wall of the reactor main body, and a coking inhibitor injecting hole, a cavity is formed among the frustum-shaped baffle plate, the annular filter plate and the inner wall of the reactor main body, and the coking inhibitor injecting hole is communicated with the cavity. By adopting the fixed fluidized bed reactor disclosed by the invention, a coking inhibitor is injected through the coking inhibitor injecting part, so that the yield of coke can be remarkably reduced.

A pair of upper and lower electrode wheels 1, 2 are disposed so that their axes 17, 18 are tilted in a horizontal plane in respective directions opposite to each other with respect to a straight line Y perpendicular to a welding line X defined on overlapping portions (L) of two metal plates 5, 6, and mash seam welding is performed while positively driving electric motors 61, 62. This can reduce the increased amount of thickness and step gradient of a joint portion to reduce a stress concentration factor and ensure joint strength. The metal plates are joined to each other such that a nugget N is not deviated from a joint interface. Therefore, it is possible to prevent respective ends of the metal plates at the overlapping portions L from biting into and scratching the corresponding electrode wheels 1, 2 and to prevent spattering during the welding.

To provide a wireless communication device that can suppress data loss due to reduction in line speed in accordance with hand-down, to thereby improve throughput, and a control method thereof. A cellular telephone device 1 that is connected to a PC 100 and provides data packets received from a server 300 via wireless communication to the PC 100, includes: a wireless communication unit 40 that can establish data communication by connecting to the server 300 both in LTE and CDMA2000_1x that is of lower speed than LTE; and a control unit 30 that, in a case in which, during communication by the wireless communication unit 40 using LTE, communication is handed down to CDMA2000_1x due to reduction in communication quality to a first threshold, reduces an RWIN to be notified to the server 300 from the size before hand-down.

A pathway control system, implementing control and setting for a communication pathway between wireless communication devices each implementing wired communication and wireless communication and each equipped with an AMR function, detects communication speed with respect to uplink wireless communication and downlink wireless communication in each wireless communication device, thus determining which one of uplink wireless communication and downlink wireless communication undergoes communication failure. It carries out adaptive modulation control on uplink wireless communication or downlink wireless communication, which undergoes communication failure, calculates new communication speed, and carries out STP pathway control based on new communication speed. Irrespective of a reduction of line speed due to activation of an AMR function, it is possible to automatically switch to redundant pathways by way of STP pathway control; it is possible to prevent momentary disconnection of wireless communication; and it is possible to maintain an adequate capacity for communication pathways.

The invention discloses a radial flow-type fixed bed residual oil hydrotreating reactor. The reactor of the present invention mainly comprises members of a housing, a central shaft oil inlet pipe, and a bottom hydrogen distribution disc; in a residual oil hydrogenation reaction process, raw oil mainly flows in a reaction diameter direction in a catalyst bed layer, and reaction supplemented hydrogen flows from bottom to top. The residual oil hydrogenation device of the invention has good operation flexibility, can realize synchronous inactivation of various catalysts, effectively prolongs the running period of the device, and makes full use of the active resources of residual oil hydrogenation catalysts.

The invention belongs to the technical field of laser surface modification, and discloses a fast and efficient semiconductor laser cladding device with a wide light beam and an adjustable powder feeding angle. The fast and efficient semiconductor laser cladding device with the wide light beam and the adjustable powder feeding angle comprises a semiconductor laser (1), a light beam shaping and Fresnel focusing system (2), an adjustable wide light band powder feeding head (3), a powder feeder (6), a high-speed machine tool (5), a six-axis linkage robot (4) and a central control system (9), wherein the light beam shaping and Fresnel focusing system (2) is used for shaping a laser light and focusing to form a wide-light-band laser light; the adjustable wide light band powder feeding head (3) is used for conveying powder and the wide-light-band laser light on the surface of a large-scale shaft type workpiece to be processed; and the diameter of a workpiece is larger than 1000mm, and the length of the workpiece is not lower than 10m. According to the fast and efficient semiconductor laser cladding device with the wide light beam and the adjustable powder feeding angle provided by the invention, through improving structures and arrangement manners of key components, outer surface strengthening and surface repairing can be carried out aiming at the large-scale shaft type workpieces such as petroleum pipelines, ocean facilities, natural gas conveying, mining and tunnel piercing, so that the wear resistance and the corrosion resistance of the surface are improved, and the service life is greatly prolonged.

The invention provides a six-rotor-wing unmanned aerial vehicle. A fuselage cover plate is of a polygonal box type structure; a plurality of jib arm connecting parts are fixed in the fuselage cover plate and are located at all corners of the fuselage cover plate respectively. One end of each jib arm connecting rod is fixedly connected with the corresponding jib arm connecting part and a motor is mounted at the other end of each jib arm connecting rod. Batteries are arranged on a fuselage upper plate and a fuselage lower plate. According to the six-rotor-wing unmanned aerial vehicle, the effective load can reach 20kg or more every time; the six-rotor-wing unmanned aerial vehicle has the characteristics of long cruising duration, rapidness and convenience for dismounting and mounting a fuselage and a jib arm again, flexibility and convenience and wide environment adaptability.

The invention discloses a grinding and polishing device. The device comprises a fixing base, wherein a support is fixedly connected to one side of the top of the fixing base, a driving motor is fixedly connected to the bottom of the support, a telescopic rod is fixedly connected to a driving shaft of the driving motor, a control panel is fixedly connected to the end, away from the driving motor, of the telescopic rod, a supporting rod is fixedly connected to the side face of the control panel, a sliding hole is formed in the top of the end, away from the control panel, of the supporting rod, asliding way is formed in the inner wall of the sliding hole, sliding grooves are formed in the two sides of the inner wall of the sliding way, and double-head slide wheels are slidably connected to the inner walls of the sliding grooves, one sides of the bottoms of the double-head slide wheels penetrate through the sliding grooves and extends into the sliding way, and the parts, located in the sliding way, of the double-head slide wheels are fixedly connected with toothed chains. The grinding and polishing device relates to the technical field of machining. The grinding and polishing device is high in polishing efficiency and safe and reliable to use, abrasive paper is firm in installation, not prone to falling off, high in utilization rate and is saved.

The invention relates to the technical field of marine diesel engine emission control, in particular to a spherical circulation type dual-channel high-pressure SCR reactor for a marine high-power diesel engine. The spherical circular current type dual-channel high-pressure SCR reactor comprises an internal passage, an external passage, an internal reaction system, an internal circulation system and a tail end soot blower system. The internal passage and the external passage are in a tube shape, the internal passage is installed in the center of the external passage, the internal reaction system is located in the passages, the internal circulation system is located at the joint of the internal passage and the external passage, and the tail end soot blower system is arranged on a spherical circulation plate of the internal circulation system. The spherical circulation type dual-channel high-pressure SCR reactor for the marine high-power diesel engine can reduce the size of the SCR reactor, improves the compactness, increases the sectional area of a denitration catalyst, realizes high efficiency denitration in a small size SCR reactor by utilizing the residual energy of turbine exhaust, can be periodically purged to reduce the sediment on the surface of the denitration catalyst and in the passages, and guarantees the safety of the turbine operation. In general, the energy cycle efficiency of the spherical circular current type dual-channel high-pressure SCR reactor for the marine high-power diesel engine is high in energy cycle utilization rate, the overall denitration efficiency is high, and the safety performance is good.

The invention provides a building device for a vehicular sensor network platform, which belongs to the technical field of automobiles and solves the problem of difficulty in management of sensor platforms in the prior art. The device comprises a plurality of sensors, a plurality of CAN (controller area network) bus communication modules of sensor nodes, a sensor gateway node and a monitoring service center host. The sensors are arranged in vehicles, the CAN bus communication modules of the sensor nodes are correspondingly connected with the sensors, the sensor gateway node is connected with the CAN bus communication modules of the sensor nodes by a CAN bus, each CAN bus communication module of the sensor node consists of a signal conditioning circuit, a node controller, a CAN controller and a CAN transceiver, each signal conditioning circuit is connected with the corresponding sensor, each node controller is connected with the corresponding signal conditioning circuit, each CAN controller is connected with an SPI (serial peripheral interface) of the corresponding node controller, each CAN transceiver is connected with the corresponding CAN controller, the sensor nodes can collect parameter signals detected by the sensors when the vehicles run, and the sensor gateway node can organize and coordinate data exchange between the internal CAN network of each vehicle and the external. The building device for the vehicular sensor network platform brings convenience for managing the networked sensor platform.

The invention provides a quantified and axial plunger pump. The plunger pump is a radial flow distribution pump and comprises a transmission shaft, a cylinder, a flow distribution sleeve, a flow distribution shaft and an inclined disc, wherein the transmission shaft is driven by external force to rotate, the cylinder, the flow distribution sleeve and the flow distribution shaft are connected with the transmission shaft, and the inclined disc enables the plunger pump to output fluid in a quantified mode. The cylinder, the flow distribution sleeve, the flow distribution shaft and the transmission shaft are coaxially arranged. Compared with a traditional radial plunger pump, the plunger pump has the main advantages of being simple in structure, small in size and light in weight; compared with a traditional axial plunger pump, the plunger pump has the main advantages that the rotation speed of the pump can be substantially increased, working pressure can be substantially increased, the nominal flow rate can be multiplied, or at equal working pressure, the volume efficiency of the pump is remarkably improved, and noise can be lowered by more than10 db.

The invention relates to a total cross-section inflatable floatation machine, comprising a flotation tank and a foam overflow mechanism arranged at the top of the flotation tank, wherein the tank body of the flotation tank is provided with an ore pulp inlet and an ore pulp outlet, the bottom of the tank body of the flotation tank is provided with a check valve mounting plate, and the shape of the check valve mounting plate is matched with that of the cross section of the bottom of the tank body of the flotation tank, thus the tank body of the flotation tank is divided into a pulp bearing chamber and an air chamber arranged below the pulp bearing chamber, one side of the bottom of the pulp bearing chamber is provided with an ore discharge port, one side of the air chamber is provided with an air inlet, and multiple check valves are uniformly distributed on the check valve mounting plate. The total cross-section inflatable flotation machine provided by the invention has a simple structure and is convenient to maintain, the ore dressing recovery percentage is improved, the energy consumption is reduced, gas is fully utilized, the chemical usage is reduced, the life of a quick-wear part is prolonged, the flotation process stage is shortened, and the equipment cost and investment of capital construction are reduced.

A coaxial and co-cylindrical multistage positive and negative rotation transmission method comprises multistage gear engagement rotation transmission consisting of a driving wheel, a plurality of driven wheels and multistage auxiliary gear banks, the driving wheel is provided with two side gears, each driven wheel is provided with two side gears, the driven wheels are coaxially serially connected with the driving wheel, and the multistage auxiliary gear banks are uniformly distributed between the driving wheel and each driven wheel and between each two driven wheels, are respectively engaged with the side gears of the driving wheel and the driven wheels, and are provided with input auxiliary gears and output auxiliary gears. The coaxial and co-cylindrical multistage positive and negative rotation transmission method is characterized in that the side inner gear or the side outer gear of the driving wheel is engaged with the power input auxiliary gears so that rotation power is transmitted to the power input auxiliary gears, the power input auxiliary gears transmit the rotation power to the power output auxiliary gears via connecting shafts, and the power output auxiliary gears are engaged with the side inner gears or the side outer gears of the driven wheels so that the rotation power is transmitted to the driven wheels. The invention further provides a coaxial and co-cylindrical multistage positive and negative rotation transmission.

The invention discloses an emergency hammer. The emergency hammer comprises a first hammer head (1), a hammer body (2) and a handle (3). The first hammer head (1) is arranged at one end of the hammer body (2). A connecting rod (4) is arranged between the hammer body (2) and the handle (3). One end of the connecting rod (4) is fixed with the hammer body (2), and the other end of the connecting rod (4) is hinged with the handle (4). The handle (3) is further provided with a rigid pre-striking piece (5). The end of the rigid pre-striking piece (5), which is far from the hammer body (2), is connected with the handle (3). Accoring to the emergency hammer, users with small power can break the window glass easily.