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422results about How to "Reliable performance" patented technology

Intelligent centrifugal pump cavitation fault detector

The invention discloses an intelligent centrifugal pump cavitation fault detector, which is characterized by comprising a signal acquisition system, a signal processing system, a detection system and a display control system, wherein the signal acquisition system is a pressure transmitter arranged at the inlet of a centrifugal pump; the signal processing system comprises a singlechip, a latch, a program memory, decoder, an analog-to-digital converter, a D trigger, a NOT gate and an NOR gate; the detection system is used for analyzing wavelet multi-dimensional statistical characteristic quantity, performing characteristic extraction on signals, classifying and identifying the extracted characteristic parameters by using a support vector machine to differentiate different cavitation states of the centrifugal pump at a normal running state, a primary cavitation stage, a light cavitation stage and a serious cavitation stage and transmitting the final detection result to the display control system; and the display control system comprises a liquid crystal display module, a loudspeaker (LS) and waved switches S3-S6. The detector has the advantages of reasonable structure, reliable performance, quick and accurate detection, low expense, capability of fully meeting the cavitation fault diagnosis requirement of the centrifugal pump and the like.
Owner:NORTHEAST DIANLI UNIVERSITY

Transmission shaft with real-time online torque monitoring device

A transmission shaft with a real-time online torque monitoring device comprises a shaft rod, wherein an installing groove for an electrical apparatus element to be installed is formed in the middle of the side wall of the shaft rod and is in a shape of a circular ring around the side wall of the shaft rod. A Wheatstone bridge is arranged in the installing groove, the electric signal output end of the Wheatstone bridge is electrically connected with the electric signal input end of a signal amplifier, the electric signal output end of the signal amplifier is electrically connected with the electric signal input end of an analog-digital converter, the electric signal output end of the analog-digital converter is electrically connected with the electric signal input end of a radio transmitting module, the radio transmitting module sends a signal to a radio receiving module, and the radio receiving module is connected with a computer capable of processing, displaying and storing a torque value transferred by the transmission shaft. The transmission shaft with the real-time online torque monitoring device can achieve online torque monitoring in a narrow space in a high-temperature and high-vibratory-impact environment and is stable and reliable in working performance and high in measurement accuracy.
Owner:ACADEMY OF ARMORED FORCES ENG PLA

Screen printing and digital printing combined printing device and printing method thereof

The invention relates to a screen printing and digital printing combined printing device and a printing method of the screen printing and digital printing combined printing device. At present, no printing method or printing method which is high in printing precision and printing speed exist. The printing device is characterized by comprising a machine frame, a rotating roller, a conveyer belt, a screen printing mechanism and a digital printing mechanism, the conveyer belt is installed on the rotating roller, the screen printing mechanism is installed on the machine frame, the digital printing mechanism is installed on the machine frame, and the screen printing mechanism is matched with the digital printing mechanism. The printing method is characterized in that shell fabric is driven to move through the conveyer belt, the shell fabric is printed through the screen printing mechanism and the digital printing mechanism, and if patterns needing to be printed on the shell fabric include large pieces of patterns, the patterns are printed through the screen printing mechanism; if the patterns needing to be printed on the shell fabric include high-precision patterns, the patterns are printed through the digital printing mechanism. The printing device and the printing method are reasonable in structural design, reliable in performance, high in printing precision and high in printing speed.
Owner:HANGZHOU HONGHUA DIGITAL TECH

Online analysis system of ship exhaust emission

The invention discloses an online analysis system of a ship exhaust emission. The online analysis system of the ship exhaust emission comprises a flue gas sampling unit, a flue gas pretreatment device, a flue gas analysis system, a flue gas parameter measuring system, an automatic blowback control system, a data acquisition system (DAS), a smoke monitoring system, a flue, a gas testing room and an analysis instrument cabinet, wherein the flue gas sampling unit comprises a sampling probe, a smokometer, a flowmeter, a moisture tester, a pressure sensor and a temperature sensor; the flue gas pretreatment device comprises a sample gas pretreatment unit, calibration equipment and a purging unit; the flue gas sampling unit is arranged in the flue, and connected with the analysis instrument cabinet through a cable; the flue gas pretreatment device and the flue gas analysis system are both mounted in the analysis instrument cabinet. With the adoption of the online analysis system of the ship exhaust emission disclosed by the invention, real-time, on-line and continuous detection of a variety of pollutants in flue gases can be carried out, a gas chamber can be prevented from corrosion damage and pollution, and a gas pipeline can be prevented from blockage; furthermore, the performances are stable and reliable, and the maintenance workload is small.
Owner:WEIHAI GERNUMAN AUTOMATION TECH CO LTD

Underwater optical cable connector

The invention relates to an optical cable connector, and provides an underwater optical cable connector, which is capable of meeting requirements on water tightness and tensile performance, and providing detachable and movable connection. The underwater optical cable connector is characterized in that mutually matched cone structures are arranged on a plug shell and a socket shell respectively sothat the plug shell and the socket shell can be in gapless sealing connection by means of insertion, a sealing connection structure is arranged between a plug and an optical cable, the space between the plug shell and a tensile taper sleeve is sealed by an 'O'-shaped sealing ring, and a sealing tail sleeve for sealing is formed in the space between the optical cable and a tail part of the whole plug by mean of integral die casting. The movable sealing connection structure is arranged between the plug and a socket of the underwater optical cable connector, the two shells are connected by cones, no gap is reserved between the inner cone and the outer cone, the space between the cones is sealed by the 'O'-shaped sealing ring, the inner cone and the outer cone are locked by a connecting nut, and the underwater optical cable connector is simple in structure, reliable in performance, extremely high in water pressure resistance and convenient in connection and detachment.
Owner:SHANGHAI FANGAO COMM TECH

Coal producers from consumer waste regeneration

The invention relates to a living garbage renewable coal product and a preparation method thereof. The product comprises: 65 percent to 70 percent of living garbage, 15 percent to 20 percent of comburent, 3 percent to 6 percent of deodorant, 3 percent to 7 percent of ignition agent, 2 percent to 5 percent of sulfur fixing and hydrogen chloride fixing substances, 1 percent to 2 percent of preservative and 2 percent to 3 percent of adhesive. The preparation method comprises the following steps: the garbage is collected to all the additive components are prepared to the scratch, the vibration selection and the magnetic selection pre-treatment are carried out, thereby removing coarse visible inert materials and iron and steel metals and then carrying out the coarse breaking of the garbage by using a coarse breaker to the coarsely broken garbage is extruded to carry out the dehydration by using a high-speed rotary extruder, the deodorant and the sulfur fixing and chloride fixing substances are added for even mixing to the high-temperature drying by a tunnel kiln is carried out to the fine breaking is carried out after the drying, the ignition agent, the comburent, the preservative and the adhesive are added to the even mixing with the garbage particles after the fine breaking is carried out to the extrusion forming is carried out. The product and the preparation method can ensure the urban living garbage to achieve the purposes of resourceful treatment, harmless treatment and industrialization.
Owner:周泽宇

Air insulated isolation switch device

ActiveCN101320648AStable operationReliable performanceContact driving mechanismsSwitches with movable electrical contactsGas insulationEngineering
The invention discloses a gas insulation isolating switch device, comprising a shell, an isolating switch and at least a ground switch; the isolating switch comprises a moving end part and a fixed end part; the moving end part comprises a moving end shielding case, a moving contact seat, a moving contact and a moving contact shielding case; the moving end shielding case is provided with a ground switch fixed contact; the fixed end part comprises a fixed end shielding case, a fixed contact seat, a fixed contact and a fixed contact shielding case; the moving contact and the fixed contact are horizontally arranged; the opening direction is coherent with the axes of the shell; the moving end part is connected with an operating transmission mechanism; the device is characterized in that: the operating transmission mechanism is transmission mechanism meshed by gear and rack, or mechanism of lead screw transmission; the rack or lead screw is directly connected with the moving contact conductor or the moving contact. The invention is able to realize the direct connection and three-phase joint, and has flexible arrangement according to different connection modes, and is suitable for GL type isolating switch and GR type isolating switch, and has good commonality and high standardization degree.
Owner:CHINA XD ELECTRIC CO LTD

Magnetorheological damper for automotive suspension

The invention discloses a magnetorheological damper for an automotive suspension. The magnetorheological damper is characterized by comprising a single-rod hydraulic cylinder, a dustproof cover, connectors, a free piston and a one-way inflation valve, wherein magnetorheological fluid is filled in an inner cavity of the single-rod hydraulic cylinder; an excitation coil is wound in the middle of the piston; a gap is formed between the piston and an inner wall of the cylinder body, so that the magnetorheological fluid returns between two cavities through the gap; a wire hole is formed on a central axis of the piston and the piston rod; a wire is arranged in the wire hole and is connected with the excitation coil; the one-way inflation valve is arranged on the inner side of an end cover of a volume compensation cavity; an air vent is formed on the end cover; the dustproof cover is arranged at one end of the single-rod hydraulic cylinder; the output end of the piston rod is arranged in the dustproof cover; and the connectors are arranged at the ends of the dustproof cover and the cylinder body. The upper and lower connectors are respectively connected to the frame and an axle of an automobile and are connected in parallel with a suspension spring, and the magnetorheological damper is reasonable in design, simple in structure and adjustable in damping performance.
Owner:ZHUZHOU TIMES NEW MATERIALS TECH

Preparation method of carbonic rare earth-ferrum, cobalt and silicon compound with NaZn1 structure

InactiveCN101748326AShorten the annealing timeReliable performanceEnergy efficient heating/coolingMagnetic materialsPhase transitionCurie temperature
The invention provides a preparation method of carbonic rare earth-ferrum, cobalt and silicon compound with NaZn1 structure, belonging to the technical field of magnetic refrigeration material; in the invention, a vacuum induction furnace is adopted for smelting, vacuumizing is carried out to above 2*10-1Pa, the pressure of common argon is from -0.05MPa to -0.02MPa, the smelting temperature is more than from 50 DEG C to 200 DEG C than the melting point, the smelting time is from 3-20min; the material is poured into a casting mould with red copper material to obtain mother alloy after being smelted, annealing treatment is carried out to the smelted mother alloy, so as to prepare the carbonic rare earth-ferrum, cobalt and silicon compound with 0.1-0.4 of C atom content alpha. The method can prepare the carbonic rare earth-ferrum, cobalt and silicon compound with more than 3mm of bulk mass, the annealing time is greatly shortened, and the obtained carbonic rare earth-ferrum, cobalt and silicon compound belongs to second-order phase transition without heat stagnation and magnetism stagnation, the performance is stable and reliable, Curie temperature can be regulated to more than room temperature, and the carbonic rare earth-ferrum, cobalt and silicon compound is applied to the magnetic cooling air-conditioning technology and wide magnetic refrigeration technology.
Owner:UNIV OF SCI & TECH BEIJING

PC network telemetered multi-parameter acquisition cow tie with solar/temperature difference power supply

ActiveCN102144571AReliable performanceSave manpower, material resources and auxiliary expensesAnimal reproductionSensing record carriersPhysical exerciseEar tag
The invention discloses a personal computer (PC) network telemetered multi-parameter acquisition cow tie with a solar/temperature difference power supply. The overall cow tie mainly comprises a waterproof sandwich cow tie (1) matching terminal, an air bag type respiratory frequency acquisition device (21), a progenitive cow/calf birth alarm device (40), a polycrystalline silicon solar wireless transceiver antenna assembly (55), a desk paging host (63), a mobile phone telemetered cow ear tag card reader (75), a portable solar repeater (74), a fixed solar repeater (69), a printer/computer (52), an RS485 data bus (66), a disease analysis and diagnosis PC database management system (90), and a mobile phone remote controlled card reader database (91). The tie is technically characterized in that: by the system, various physiological parameters including cattle ear tags, number, hutches, body temperature of herds, amount of exercise, respiratory frequency, global position system (GPS) satellite positioning, movement track, and information reading and storage of cattle and herds can be monitored at any time; that veterinarians and the staff contact unsafe factors of human and livestock cross infectious and viral diseases, transmitted diseases and body temperature inspection of animal groups is avoided; the information transfer level of a first emergent forecast period in the whole range is improved; and the system is simple and practicable, and convenient to use.
Owner:赵增友

System and method for monitoring total nitrogen and total phosphorus of water body

The invention discloses a system and a method for monitoring total nitrogen and total phosphorus of a water body. The system comprises an automatic sampling control device, a digestion device and a total nitrogen and total phosphorus color-developing flow path, wherein the automatic sampling control device is connected with the digestion device, and an injection pump provides powder to drive a solution to flow; channels of an eight-channel selecting valve are connected with the digestion device, a phosphorous color-developing agent, the total nitrogen and total phosphorus color-developing flow path and a spectrograph correspondingly; the total nitrogen and total phosphorus color-developing flow path consists of a liquid storage pipe and the injection pump. By the method, a certain amount of digestion liquid is absorbed into the liquid storage pipe sequentially after digestion is finished, the total nitrogen and total phosphorus are measured sequentially, and pipelines and the digestion device are cleaned automatically after measurement is finished. By virtue of the system and the method, the total nitrogen and total phosphorus can be digested on line and can be measured on line. The system and the method have the advantages of convenience in operation, reliable performance, high sensitivity, high selectivity, low reagent consuming amount and the like.
Owner:常州市盛立泓环境科技有限公司
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