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60results about How to "Safe and reliable work" patented technology

Automatic cleaning device of monitoring camera

The invention discloses an automatic cleaning device of a monitoring camera, and aims to overcome the defects of low manual cleaning working efficiency, unsafety and occupancy of a crane for cleaning the monitoring camera arranged at a high place existing in the prior art. An electric push rod which can be linked with a lifting mechanism to push up to attach a rotatable rotary brush to an outer cover of the monitoring camera is supported and arranged on one side of an upright post of the monitoring camera. Since the electric push rod is arranged on the upright post of the monitoring camera and can be linked with the lifting mechanism to push up the rotary brush, the rotary brush is attached to the outer cover of the monitoring camera; the electric lifting mechanism and the rotary brush are operated to rotate, so that the outer cover of the monitoring camera can be cleaned; the monitoring camera is kept in a good monitoring state all the time by operating a cleaning mechanism at any time; cleaning personnel are not required to be hoisted under the monitoring camera with the crane to clean; and the automatic cleaning device is safe and reliable in automatic cleaning. The device has the advantages of simple structure, high working efficiency and no occupancy of a large-sized crane for production.
Owner:QINGDAO PORT GRP

High-power high-frequency transformer double-layer oil temperature monitoring system and method thereof

The invention discloses a high-power high-frequency transformer double-layer oil temperature monitoring adjusting system and a method thereof. The adjusting system comprises an oil temperature acquisition circuit for collecting oil temperature data in an oil immersed transformer, a filtering protection circuit used for receiving the data of the oil temperature acquisition circuit, processing the data and sending the data to a control circuit, the control circuit used for receiving the signal of the filtering protection circuit, converting the signal into a digital quantity and comparing the digital quantity with a preset value to judge whether temperature is too high or not, a PWM wave output circuit which is connected to the output port of the control circuit and outputs a PWM wave with an expected duty cycle when the temperature is higher than the preset value, a driving circuit which is connected between the PWM wave output circuit and the inverter circuit in a transformer oil temperature control main circuit, and a power supply circuit. According to the system and the method, the transformer can safely work in the safe condition of ensuring a service life and is well adapted to the characteristics of nonlinearity, variability and complexity in working.
Owner:JIANGSU UNIV OF SCI & TECH

Unblocking device for cylindrical flat-bottom-shaped reinforced concretebunker

The invention discloses an unblocking device for a cylindrical flat-bottom-shaped reinforced concretebunker and belongs to an auxiliary device for mineral separation. The unblocking device is characterized by comprising an air compressor, manual ball valves I, II and III, air storage tanks I and II, manual ball valves, left and right distribution boxes, an electric control cabinet, a pneumaticflow-assisting device and a pneumatic control device, wherein an auxiliary bunker is mounted at the flat bottom of the bunker; discharging hoppers are mounted on the bottom surface of the flat bottom of the bunker; the pneumatic control device mainly comprises a master control pipeline, an FRL combination (namely, the combination of an air filter, a pressure reducing valve and an atomized lubricator), a two-position two-waysolenoid valve, a pressure gauge II, acircular control pipeline, main control pipelines I and II, a branch control pipeline and pneumaticactuators I; the pneumaticflow-assisting device mainly comprises a master flow-assistingpipeline, a non-return valve, a pneumatic ball valve, a pneumaticactuator II, a pressure gauge I, a circular flow-assisting pipeline, main flow-assisting pipelines I and II, branch flow-assisting pipelines I and II, arc-shaped flow-assisting pipelines, semi-circular flow-assisting pipelines, pneumaticbutterfly valves and flow-assisting nozzles I and II; thus, the efficiency and the quality of mineral separation production are improved.
Owner:马鞍山市天工科技股份有限公司

Electromagnetic heating system and switch-on control device and method of switching tube

ActiveCN106211394AAvoid heating or even damageSafe and reliable workInduction heating controlInduction heating apparatusCapacitanceResonant capacitor
The invention discloses an electromagnetic heating system and a switch-on control device and method of a switching tube. The electromagnetic heating system comprises a resonant circuit and a driving circuit, wherein the resonant circuit comprises a heating coil, a resonant capacitor and a switching tube, and the driving circuit is used for driving the switching tube. The switch-on control device comprises a voltage detection circuit and a master control unit, the voltage detection circuit is connected with a collector of the switching tube and is used for detecting instantaneous voltages of two ends of the collector and an emitter of the switching tube, the master control unit is connected with the driving circuit and the voltage detection circuit and is used for adjusting heating power of the electromagnetic heating system according to the instantaneous voltages of the two ends of the collector and the emitter of the switching tube, so that the preset switch-on requirement of the switching tube is satisfied, the switching tube is intelligently adjusted under the preset switch-on requirement to be switched on, different pans are adapted well, the demand of a user is satisfied, and moreover, the switching tube can be prevented from being heated or even damaged since switch-on of the switching tube is performed in advance or delayed.
Owner:FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD +1

Fan-blade-shaped welding device

The invention discloses a fan-blade-shaped welding device comprising a workbench, an electric appliance cabinet, a feeder, a discharge device and a welding device body. The workbench is provided withthe feeder, the discharge device and the welding device body. The electric appliance cabinet is arranged on the side face of the workbench. A control panel is arranged on the electric appliance cabinet. A main power source, a control mainboard and a servo driver are arranged in the electric appliance cabinet. The main power source, the control panel and the servo driver are in electric connectionwith the control mainboard through data cables. The feeder comprises a driving device and a weldment clamping device. The driving device comprises an additional motor, a speed reducer, a motor fixingplate, a coupling, a bearing base, a sealed bearing, a rotary shaft, a fan blade plate and an end cover. The weldment clamping device comprises a cover plate and ring soft plastic fixedly arranged onthe fan blade plate. The cover plate is arranged at the top of the ring soft plastic. The fan-blade-shaped welding device has the characteristics of automatic feeding, automatic locating and safe andreliable work, to-be-welded parts of any shapes can be placed, manual welding is replaced to a great extent, the accuracy rate is high, and thus work efficiency is improved.
Owner:太仓市华盈电子材料有限公司 +1

Intelligent monitoring and control system for prison perimeter high voltage power grid

The invention belongs to the technical field of intelligent power grid monitoring and control, and particularly relates to an intelligent monitoring and control system for a prison perimeter high voltage power grid, which comprises a lower computer PLC data acquisition subsystem and an upper computer dynamic monitoring subsystem, wherein the lower computer PLC data acquisition subsystem is used for acquiring various state parameters of operation of the power grid and transmitting the well-processed power grid parameters to the upper computer dynamic monitoring subsystem; the upper computer dynamic monitoring subsystem is used for carrying out early warning processing on the power grid operation parameters, making corresponding feedback according to the early warning information, being linked with other perimeter systems and ensuring the safety of the prison perimeter; and the other perimeter systems comprise a video monitoring system, a door access system, an interphone system and an infrared system. Functions of high voltage power grid intelligent detection, intelligent striking, process recording, region linkage and the like are integrated, the perimeter high voltage power grid and other devices are not mutually independent but operate cooperatively, and prison perimeter safety management intelligence is thus realized.
Owner:QILU UNIV OF TECH

Water circulation sealing component on trunk-type rewinding machine

The invention relates to a water circulation sealing component on a trunk-type rewinding machine. The water circulation sealing component on the trunk-type rewinding machine comprises a main shaft, wherein one end of the main shaft is provided with a circulation water intake and drainage section; the circulation water intake and drainage section along the peripheral direction of the main shaft is provided with an annular water inlet groove and an annular water outlet groove respectively; the annular water inlet groove and the annular water outlet groove are internally provided with a circulation water inlet and a circulation water outlet respectively. The water circulation sealing component on the trunk-type rewinding machine is characterized in that the circulation water intake and drainage section of the main shaft is provided with a rear sealing seat and a front sealing seat through bearings; a middle sealing seat is arranged between the front sealing seat and the rear sealing seat; the front sealing seat is provided with a water intake connection hole communicated with the annular water inlet groove; the rear sealing seat is provided with a water drainage connection hole communicated with the annular water outlet groove; inner cavities between the front sealing seat and the main shaft and between the rear sealing seat and the main shaft are internally provided with mechanical sealing elements respectively. The water circulation sealing component on the trunk-type rewinding machine, which is provided by the invention, has a favorable sealing effect, and can effectively guarantee the normal and safe operation of the rewinding machine and the normal production process.
Owner:WUXI PINGSHENG SCI & TECH

Coal-fired boiler pneumatic soot blowing system with circular lower spray pipe type nozzle and soot blowing method

The invention discloses a coal-fired boiler pneumatic soot blowing system with a circular lower spray pipe type nozzle and a soot blowing method. The coal-fired boiler pneumatic soot blowing system comprises a cylindrical air chamber, an air chamber seal head and a lower spray pipe, one end of the cylindrical air chamber is provided with a sunken interface for connecting a compressed air or steammedium pipeline, the air chamber seal head is welded to the other end of the cylindrical air chamber, a plurality of air ports are formed in the upper portion of the cylindrical air chamber, and the lower spray pipe is welded to the positions of the air ports in the outer wall of the cylindrical air chamber. The nozzle is arranged in an area where ash is easy to accumulate in horizontal and tail flues of a coal-fired boiler, compressed air or steam is used as a medium for blowing ash, enters from the cylindrical air chamber, flows into the lower spray pipe from an air hole in the upper portionof the air chamber, and is sprayed out from a nozzle of the lower spray pipe; and the medium is directionally sprayed towards the wall surface or the heat exchange surface of the flue through the nozzle of the lower spray pipe, accumulated ash in the flue is blown and fluidized, all-directional blowing around the nozzle is guaranteed, disturbance to the accumulated ash is enhanced through directional jet flow of the lower spray pipe, and the problem of accumulation of the accumulated ash in the flue is effectively solved.
Owner:HUADIAN ELECTRIC POWER SCI INST CO LTD

Pulsating heat pipe heat dissipating type high-power ultrasonic transducer

The invention discloses a pulsating heat pipe heat dissipating type high-power ultrasonic transducer and relates to the technical field of ultrasonic transducers. The pulsating heat pipe heat dissipating type high-power ultrasonic transducer comprises a piezoelectric ultrasonic transducer and a pulsating heat pipe heat dissipating device. The piezoelectric ultrasonic transducer comprises a stressbolt, a rear cover plate, piezoelectric ceramic elements and a front cover plate, wherein a series of holes are formed along the radial direction of the front cover plate. The rear cover plate is cylindrical, and the front cover plate is conical. The front cover plate, the piezoelectric ceramic elements and the rear cover plate are closely connected through the stress bolt. The pulsating heat pipeheat dissipating device is organically coupled inside the piezoelectric ultrasonic transducer. On the premise that the performance of the transducer is not influenced, based on the mechanical structure of a traditional piezoelectric ultrasonic transducer, the pulsating heat pipe heat dissipating type high-power ultrasonic transducer is formed through organic coupling with pulsating heat pipes. The efficient heat-transferring characteristic of the pulsating heat pipes is utilized to take away heat generated inside the high-power piezoelectric ultrasonic transducer when the high-power piezoelectric ultrasonic transducer works; it is guaranteed that the transducer runs efficiently and safely within a normal-temperature range; and in addition, the service life of the piezoelectric ultrasonictransducer can be prolonged.
Owner:ZHEJIANG NORMAL UNIVERSITY
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