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180results about How to "Increase effective power" patented technology

High-precision brillouin scattering measuring system in ultrashort optical fiber

The invention relates to a high-precision brillouin scattering measuring system in an ultrashort optical fiber. The system comprises a laser; an input terminal of an optical fiber coupler is connected with the laser at an output direction of the laser; an output terminal of the optical fiber coupler successively passes a first polarization controller, an optical fiber isolator, and a detection optical fiber and then is connected to one end of a circulator; the other output terminal of the optical fiber coupler successively passes a second polarization controller and then is connected to an input terminal of a single sideband modulator; an output terminal of the single sideband modulator passes an optical fiber amplifier and then is connected to the other input terminal of the circulator; an output terminal of the circulator passes a photoelectric detector and then is connected with a first input terminal of a lock-in amplifier; an output terminal of the lock-in amplifier is connected with a data collection processing system; and a square wave signal generator is respectively connected with a second input terminal of the single sideband modulator and a second input terminal of the lock-in amplifier. Meanwhile, according to the invention, a stimulated brillouin scattering gaining process and a stimulated brillouin scattering loss process are utilized, so that a detection sensitivity on a whole of a sensing optical fiber is improved and influences of interference signals like end surface reflection can be avoided; moreover, costs are reduced.
Owner:SHANGHAI JIAO TONG UNIV

Bent connecting rod offset bent shaft mechanism and bent connecting rod offset bent shaft motor

The invention discloses a bent connecting rod offset bent shaft mechanism and a bent connecting rod offset bent shaft motor, belonging to the bent shaft connecting rod mechanism of a piston explosive motor, and comprising a cylinder, a piston, a connecting rod, a bent shaft, a bent shaft crank, an inlet cam, an inlet rocker arm roller wheel, an outlet cam and an outer rocker arm roller wheel, wherein the circle center of the bent shaft is arranged in the mode of deviating from the median vertical line of the cylinder, and the offset is more than 35% of bent shaft radius; the connecting rod is the bent connecting rod, and the bending direction of the connecting rod is same with the rotation direction of the bent shaft; in the same cylinder, according to the cam shaft rotation direction, the intersection angle of the inlet cam is smaller than that of the outlet cam, and the difference of two intersection angles is equal to that 90 degrees subtract the dip angle difference of an upper dead center and a lower dead center on a 1/2 bent shaft. The invention changes the bent shaft position and is matched with a bent connecting rod, so that the offset bent shaft has the characteristics that the upper dead center and the lower dead center are asymmetric, and piston travel is bigger than bent shaft diameter; thus, engine torque is increased so as to effectively prolong torque duration as well as prolong burning and air inflow duration.
Owner:刘若丹

Short magnetic circuit reluctance motor, and double stator magnetic poles, rotor core and wound rotor

The invention discloses a short magnetic circuit reluctance motor, and double stator magnetic poles, a rotor core and a wound rotor. The three-phase 9/3 pole short magnetic circuit reluctance motor divides nine groups of double stator magnetic poles distributed on the circumference of a stator (1) at equal intervals into three sections in axial direction, wherein the length of the middle section is equal to that of a main magnetic pole and the middle section is manufactured by overlapping silicon-steel sheets; other main and auxiliary magnetic poles are manufactured into appropriate shapes by soft iron so that the three sections of main and auxiliary magnetic poles can be formed into the double stator magnetic pole with an annular groove for placing exciting windings after being combined together; then, the nine exciting windings (L1, L2, L3, L4, L5, L6, L7, L8 and L) are respectively arranged in each annular groove to obtain three-phase exciting windings (L1, L4, L7 and L2, L5, L8 and L3, L6, L9) on the circumference of the stator (1) in turn according to the rule of equilateral triangles; and then, a three-salient pole rotor core (3) consisting of a multi-cambered surface lug boss is arranged on a hollow rotor shaft lever (4) with internal thread and forms rotating connection with a stator part through a periphery connecting and fixing device of a motor.
Owner:张玉宝

Swept-back high-efficiency hot-plate diversion rectification multiphase reaction kettle

The invention discloses a swept-back high-efficiency hot-plate diversion rectification multiphase reaction kettle. The reaction kettle comprises a cylindrical kettle body which is arranged vertically. A discharge port, a liquid feeding port, and a gas feeding port are sequentially arranged from top to bottom on the side wall of the kettle body. A central shaft connected with an outside motor is arranged vertically in the kettle body. The reaction kettle is characterized in that three layers of vertically arranged swept-back half-pipe turbo agitators are arranged on the central shaft. 6-10 high-efficiency heat-exchange diversion rectification devices are horizontally uniformly distributed between the outer end of the swept-back half-pipe turbo agitators and the inner wall of the kettle body. 4-6 sheets of side wall diversion full baffles are uniformly distributed on the inner wall of the kettle body. A liquid jet distributor connected with the liquid feeding port and a gas jet distributor connected with the gas feeding port are arranged on the bottom of the kettle body. An overflow zone is arranged in the kettle body. Reaction products pass through the overflow zone and is collected from the discharge port. The swept-back high-efficiency hot-plate diversion rectification multiphase reaction kettle has the advantages of good multiphase system mixing effect, large heat-exchange area, and precise temperature control.
Owner:SEDIN NINGBO ENG

Cooling water pump for internal combustion engine and production process of cooling water pump

The invention discloses a cooling water pump for an internal combustion engine, which comprises a water pump housing, a rotating shaft, a cover plate and an impeller. The water pump housing is formed with a cavity, the rotating shaft is installed in the middle of the cavity through a bearing, and the impeller is installed on the rotating shaft so as to be rotatable along its own axis. , the cover plate is firmly connected to the side of the water pump housing that is formed with a cavity; the water pump housing is provided with a water inlet and a water outlet, and a partition tongue is made in the cavity near the water outlet, and a vortex chamber is made between the partition tongue and the water outlet The flow channel and the vortex flow channel are arc-shaped; the impeller includes a hub, a disc and blades, the center of the hub and the disc is fixed, and the blades are arc-shaped, and the blades are at least two and are evenly spaced around the hub. On the disc, the disc is provided with at least two openings, and the openings are arranged between the blades; the cooling water pump for internal combustion engine of the present invention reduces the volume and quality of the impeller by opening the disc, and increases the available energy in the cavity. The volume increases the flow rate of the water pump and reduces energy consumption without changing the external dimensions and interfaces of the water pump.
Owner:YANCHENG DUOWEI GROUP

Energy storage transmission mechanism and rotary switch operating device using the energy storage transmission mechanism

An energy storage transmission mechanism comprises a transmission shaft (1) and a driving shaft (2). The mechanism is characterized in that the transmission shaft (1) is provided with a slide hole (101); a pair locking bolt (3) is installed in the slide hole (101) and can slide; the upper end surface of the transmission shaft (1) is provided with a track slope groove (102); the inner end surface of the driving shaft (2) is provided with a releasing convex platform (201) corresponding to the track slope groove (102); the upper end surface of the transmission shaft (1) is provided with a lockingconvex platform (103); a positioning shaft (202) which is stretched out of the driving shaft (2) is arranged in the positioning hole (104) of the transmission shaft (1); one end of an energy storagetension spring group (4) is installed on the pair locking bolt (3) and the other end is installed on a driving finger (204) stretched out of the driving shaft (2); and during the rotation process of the driving shaft (2), the driving finger (204) stretches the energy storage tension spring group (4) so that energy storage is performed. In the invention, the structure is simple, reliability is high, through a switch mechanism, the effective power of energy storage and transmission is increased, a mechanism load is reduced, and the motion reliability and the mechanical life of the mechanism areincreased and prolonged.
Owner:SHANGHAI LIANGXIN ELECTRICAL

Multistage variable-temperature and variable-pressure steam heating device and heat exchange system thereof

Disclosed are multistage variable-temperature and variable-pressure steam heating device and heat exchange system thereof, in the technical field of boiler steam generation. The multistage variable-temperature and variable-pressure steam heating device comprises an input unit, at least one feedback unit and at least one heating unit with an atomizer set. An input end of the output unit is connected with an output end of the heating unit and an output end of each feedback unit. A feedback end of each heating unit is connected with an input end of one feedback unit. The atomizer set is disposed at an input end of the corresponding feedback unit. A heat exchange cylinder is electromagnetically inductively heated according to the fast conduction feature of steel and by semiconductor sensing technology. Liquid water is dispersed into 360-degree heat exchange water curtains with small unit size, light weight and kinetic energy by array atomizers, and the water curtains are subjected to fast heat exchange of a multistage heat source by surface of a heat exchanger cylinder at 200-400 DEG C to generate superheated steam, and the original steam generation way using a boiler drum is broken through.
Owner:上海旌吉节能科技有限公司

Intelligent control dust removal system and method

InactiveCN112807915AIncrease effective powerMonitor purification effectCombination devicesWater filterDust control
The invention provides an intelligent control dust removal system and method, wherein the front end and the rear end of a dust removal unit are each provided with a particulate matter sensor, the front end and the rear end of a sanitation vehicle are each provided with a dust accumulation load sensor, and an atmospheric environment sensor is installed on a vehicle roof. According to the invention, different parameters monitored by three sensors are matched with an internal algorithm of a main control unit, so that the filtering effect of a dust removal unit can be monitored in real time, and the power of an internal cyclone dust collector, an electrostatic dust collector and a water filtering dust collector is adjusted according to the concentration of particulate matters sucked into dust-containing air to monitor the particle size of the dust-containing particles, so that equipment for efficiently filtering fine dust, such as electrostatic dust collection and the like, can be accurately controlled; the atmospheric particulate concentration and the air outlet concentration are calculated to monitor the purification effect of the equipment, so that consumables and maintenance time are accurately guided, and the optimal use state of the equipment is maintained; and the dust accumulation load concentration of the front portion and the rear portion of the vehicle is measured, the road cleaning effect of data checking equipment is used, the road pollution condition is discriminated, the fan power is adjusted in real time, and efficient cleaning of different polluted road sections is achieved.
Owner:NOVA FITNESS CO LTD

Physical layer security methods based on non-optimal user cascading scheme in heterogeneous network

The invention discloses physical layer security methods based on a non-optimal user cascading scheme in a multilayer heterogeneous network and belongs to the technical field of wireless communication.According to the methods, a multilayer heterogeneous network model in a passive eavesdropping scene is analyzed through description of node distribution density, a base station transmitting power, path loss indexes and a bias factor of each layer. The problem that the optimal base stations are difficult to connect is solved by the provided method based on the non-optimal user cascading scheme. According to the scheme, network nodes are modeled into a homogeneous Poisson point process through utilization of stochastic geometry. On the basis of a stochastic geometry mathematical tool, a physical layer security probability expression of the multilayer cellular heterogeneous network is inferred. Influence of the transmitting powers, security thresholds and eavesdropper density on a system security probability is compared and analyzed according to obtained security probabilities. The method has obvious advantages in the aspect of improving physical layer security of the system. A network coverage probability and average user capacity are improved. Throughput and spectral efficiency of the network are also improved.
Owner:NORTHWEST NORMAL UNIVERSITY

Opposed mechanical supercharging four-stroke internal combustion engine

The invention relates to an opposed mechanical supercharging four-stroke internal combustion engine in the technical field of the internal combustion engine. The opposed mechanical supercharging four-stroke internal combustion engine comprises air cylinders, pistons, connecting rods, air inlet mechanisms, air inlet valves, air bleeding mechanisms, air bleeding valves, a connecting pipe and a crankshaft; the air inlet mechanisms and the air bleeding mechanisms are arranged at the top ends of the air cylinders; the air inlet valves are arranged in the air inlet mechanisms; the air bleeding valves are arranged in the air bleeding mechanisms; the two ends of the connecting pipe are respectively connected with the first air inlet mechanism and the second air bleeding mechanism; and the two ends of the connecting rods are respectively connected with the crankshaft and the pistons. In the working process, the second piston can use the mechanical energy of the first piston through a crankshaft connecting rod mechanism; by controlling the timing of the air inlet valves and the air bleeding valves, the second piston can be used for supercharging air sucked by the second air cylinder, thereby enabling the first air cylinder to suck more air and improving the effective power of an engine. The opposed mechanical supercharging four-stroke internal combustion engine is reasonable in design and simple in structure and is suitable for a mechanical supercharging system of a four-stroke engine.
Owner:SHANGHAI JIAO TONG UNIV

Three-way catalyst with flow rectifier

ActiveCN103422954AControl Flow UniformityReduce exhaust back pressure increaseExhaust apparatusSilencing apparatusEffective powerRing device
The invention relates to a three-way catalyst with a flow rectifier. The three-way catalyst comprises a shell, a catalyst carrier, a liner, an inlet passage and an exhaust passage, wherein the inlet passage is connected with one end of the shell, and the exhaust passage is connected with the other end of the shell. The three-way catalyst also comprises a catalyst flange. The catalyst flange is connected with the inlet passage; the flow rectifier is arranged in the catalyst flange and is located in the air inlet of the inlet passage. The flow rectifier comprises an electromagnetic ring device, an electronic control unit and a plurality of blades, wherein the electromagnetic ring device is coaxial with the catalyst flange; the electronic control unit is connected with the electromagnetic ring device and is used for controlling the electromagnetic ring device to work; the blades are arranged along the circumferential direction of the electromagnetic ring device and are controlled by the electromagnetic ring device to rotate; each blade is connected with the electromagnetic ring device by a connecting rod. According to the three-way catalyst provided by the invention, the blades can be changed within a certain rotation angle range, and are completely matched with all instantaneous conditions of an engine, and therefore, the conversion efficiency and the use ratio of the three-way catalyst are effectively improved, and moreover, maximum effective power is output by the engine.
Owner:AUTOMOBILE RES INST OF TSINGHUA UNIV IN SUZHOU XIANGCHENG

Brushless electronic water pump

The invention discloses a brushless electronic water pump. The brushless electronic water pump comprises a shell body, an isolating sleeve and an upper cover which can be detachably fixed. The isolating sleeve divides the shell body and the upper cover into an installing chamber and a fluid chamber. A stator assembly and a PCB are fixed into the installing chamber. A rotor assembly is installed in the fluid chamber in a rotating manner. The upper cover is provided with a water inlet and a water outlet. The rotor assembly comprises an impeller and a connecting drum. A wear-resisting lubricating insert is fixedly inserted into an inner hole of the connecting drum. A center hole is formed in the wear-resisting lubricating insert. A magnet yoke drum is fixedly installed outside the connecting drum concentrically in a sleeving manner. A magnet ring drum is fixedly installed outside the magnet yoke drum concentrically in a sleeving manner. The isolating sleeve is provided with a locating center shaft which is inserted into the center hole. The shell body is provided with a heat dissipating device connected with the PCB in a heat-conducting manner. According to the brushless electronic water pump, a bearing does not need to be arranged on a rotor, no water inlet space is occupied, the reliability of the brushless electronic water pump is improved, and the service life of the brushless electronic water pump is prolonged.
Owner:JIANGSU LANGXIN ELECTRIC
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