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128results about How to "Work safely and efficiently" patented technology

Power management system and state estimation method based on mining lithium ion batteries

Disclosed are a power management system and a state estimation method based on mining lithium ion batteries. The power management system based on a mining lithium ion battery set composed of a plurality of single lithium batteries comprises a master control unit, a single-bus temperature acquisition unit, a power management unit, a current acquisition unit, a control unit and a data transmission unit; the system allows overvoltage-undervoltage protection, overcurrent protection, overtemperature protection, charge balance management, capacity self-check and real-time uploading and correction of running parameters. The state estimation method based on a Gaussian process inference learning method is characterized in that sparse Gaussian process and Gaussian process are processed by a hypothesis density filter, strategy noise, system noise and model uncertainty are considered, filtering and prediction operating are performed at computation cost by means of the analytical method, and a non-stationary dynamic system is easy to model. Applicative effects show that the power management system and a state estimation model have the effect of ensuring operational security and efficiency of mining batteries, and energy utilization rate of the batteries is maximized.
Owner:CHINA UNIV OF MINING & TECH +1

Folding type blade wind power generation device

The invention discloses a folding type blade wind power generation device. The folding type blade wind power generation device aims at automatically adjusting the size of the stress area of blades in the wind power generation device according to different wind speeds, it is guaranteed that the wind power generation device normally works under the strong wind condition, and it can be guaranteed that the wind power generation device fully utilizes wind energy under the low wind condition. A fixed blade is fixedly connected with a blade mounting shaft and fixedly connected with a blade pin shaft, and a movable blade and the fixed blade are movably mounted in a matching manner through the blade pin shaft. The blade pin shaft is sleeved with a reset spring, the reset spring is movably mounted in a spring mounting groove in a matched manner, and a centrifugal hammer stop lever is movably mounted on the fixed blade through a centrifugal hammer pin shaft. A movable blade limiting body is arranged on the movable blade, the centrifugal hammer pin shaft is sleeved with a centrifugal hammer stop lever reset spring, and the centrifugal hammer stop lever is pressed into the position, with the smallest space, in the movable blade limiting body through the centrifugal hammer stop lever reset spring. The folding type blade wind power generation device is suitable for rotating speed adjustment of the wind power generation device, the braking function is relieved, and energy is saved.
Owner:QINGDAO UNIV OF SCI & TECH

Intelligent paint spraying machine with automatic rust and dirt removal function

The invention discloses an intelligent paint spraying machine with an automatic rust and dirt removal function. The intelligent paint spraying machine with the automatic rust and dirt removal function comprises a control cabinet, a rust and dirt removal device and a paint spraying machine body. A control display screen is mounted in the control cabinet. A paint storage tank is mounted above the control cabinet. A paint residual amount inductor is mounted in the paint storage tank. A stand column is mounted at one end of the paint storage tank. A movable sliding block is mounted at one end of the stand column. A rail cross lever is mounted at one end of the movable sliding block. The paint spraying machine body is mounted on the rail cross lever. An intelligent sprinkling width mist regulator is mounted at the lower end of the paint spraying machine body. A spray head is mounted at the lower end of the intelligent sprinkling width mist regulator. A working frame is mounted on the rust and dirt removal device. A motor is mounted at the upper end of the working frame. A rotary bush is mounted at the lower left end of the working frame. A rotary grinding disc is mounted at one side of the rotary brush. The intelligent paint spraying machine with the automatic rust and dirt removal function has the characteristics of stable operation and intelligent control, and the working efficiency is greatly improved.
Owner:成都元始信息科技有限公司

Cathode protection device for controlling multiplexed output by utilizing polarization potential and operating method thereof

InactiveCN103147082AStrong interference abilityGuaranteed cathodic protection effectFailure rateInterference resistance
The invention discloses a cathode protection device for controlling multiplexed output by utilizing polarization potential. The cathode protection device comprises a case, wherein an operation display control unit, an output unit and a multi-path sampling unit are arranged in the case. According to the cathode protection device for controlling multiplexed output by utilizing polarization potential, a control point potential in the area reaches the ideal polarization potential range or polarization potential allowed range, the cathode protection effect of each point can be accurately reflected and guaranteed, the cathode protection device is not required to be adjusted and output, the adjusting steps are greatly simplified, the adjustment complexity is reduced, the reliability of the equipment is improved, the equipment is high in stray current interference resistance, the sudden power change is avoided, and the equipment outputs the constant output current according to a contact current mode, so that the equipment stably operates compared with a potentiostat, the potential adjustment response is reasonable, safe and effective operation of the equipment is guaranteed, the failure rate of the equipment is reduced, the temperature factors are quoted into the adjusting mechanism, and the control precision of the equipment is improved.
Owner:QINGDAO YAHE CATHODIC PROTECTION ENG TECH CO LTD

Rear wheel retracting and protecting mechanism for amphibious boat

The invention relates to a rear wheel retracting and protecting mechanism for an amphibious boat. The rear wheel retracting and protecting mechanism is capable of realizing folding and retracting rear wheels during drive in water and sealing the rear wheels by a protection cover. The action of the protection cover and the rear wheels is realized by the extension and shrinkage of a protection box hydraulic cylinder and a rear support leg hydraulic cylinder, and the sequential action of the protection box hydraulic cylinder and the rear support leg hydraulic cylinder is realized by a pressure control type sequential action loop. The rear wheel retracting and protecting mechanism for the amphibious boat comprises protection boxes, wherein the protection boxes are arranged at two sides of the rear part of a boat body; the bottoms of the protection boxes are higher than the bottom of the boat body; the protection boxes are provided with openable and closable protection covers; the contact positions of the protection boxes and the protection covers are sealed; rear wheel hydraulic lifting devices are arranged in the protection boxes; the rear wheels are mounted on the rear wheel hydraulic lifting devices; the protection covers are also connected with hydraulic opening and closing devices; the rear wheel hydraulic lifting devices and the hydraulic opening and closing devices are connected with hydraulic control devices; the hydraulic control devices control the lifting action of the rear wheels and the protection covers in a way of sequential control.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY

Crawler walking cave mouth protecting top shed for outdoor slope coal excavation

The invention belongs to the technical field of top shed protecting equipment, and particularly relates to a crawler walking cave mouth protecting top shed for outdoor slope coal excavation. The top shed comprises an arc-shaped impact resistant top shed, a supporting frame and self-walking rotary devices. The two ends of the arc-shaped impact resisting top shed are hinged to the supporting frame,the arc-shaped impact resisting top shed is composed of a protecting top plate, side protecting plates and a telescopic oil cylinder; the supporting frame comprises a framework and two telescopic height adjusting mechanisms, the lower ends of the height adjusting mechanisms are provided with the self-walking rotary devices, the self-walking rotary devices comprise crawler walking mechanisms and rotary mechanisms, and the steering of the crawler walking mechanisms can be achieved through the rotary mechanisms to allow the whole protecting top shed to move from a current cave mouth working surface to the next cave mouth working surface reliably and rapidly. By means of the combination of the above mechanisms, the effective protection of coal excavating equipment performed by the crawler walking cave mouth protecting top shed for outdoor slope coal excavation when outdoor slope coal excavating is conducted is achieved, the safe and efficient operation of the coal excavating equipment is ensured, and the safety of workers can be protected.
Owner:TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Buffer system for impact ground pressure resisting of hydraulic support, and application thereof

The invention relates to a buffer system for impact ground pressure resisting of a hydraulic support, and application thereof. The buffer system comprises a vertical column. The vertical column comprises a movable column, a middle oil cylinder, a bottom oil cylinder and an anti-impact buffer which are sequentially connected. The anti-impact buffer is provided with a pressure sensor and a controller which are connected. The controller is further electrically connected with a magnetorheological coil in the anti-impact buffer. Pressure information is collected by the pressure sensor, the currentof the magnetorheological coil is adjusted in real time and connected and disconnected by the controller, and thus the impact ground pressure applied to the vertical column is buffered by the anti-impact buffer in an assisted mode. The buffer system for impact ground pressure resisting can be conveniently integrated on an existing hydraulic support structure and is conveniently mounted to be matched with the existing hydraulic support for using; and the traditional single mode of pressure relieving through a large-flow safety valve is changed, after the buffer system is adopted, the buffer pressure relieving process of the vertical column can be effectively protected, meanwhile, reliability during impact ground pressure resisting of the hydraulic support is improved, and it is ensured thatthe hydraulic support works safely and effectively.
Owner:SHANDONG UNIV OF SCI & TECH

Multifunctional road ice and snow removing machine

The invention relates to a multifunctional road ice and snow removing machine comprising an ice breaking device (1), an ice and snow shoveling device (11), an ice and snow conveying device (14), a cleaning processing device (23), a hybrid vehicle (30), and the like, wherein the ice breaking device (1) is arranged at the front end of the multifunctional road ice and snow removing machine and firstly breaks firm ice and snow during operation; the ice and snow shoveling device (11) shovels the broken ice and snow or accumulated snow and pushes the broken ice and snow or the accumulated snow to the ice and snow conveying device (14); the ice and snow conveying device (14) conveys the broken ice and snow outside a right-side road; and the cleaning processing device (23) cleanly removes rest ice and snow which are not shoveled to achieve the effect of cleaning roads by only if passing the multifunctional road ice and snow removing machine. The power of the multifunctional road ice and snow removing machine is supplied by the hybrid vehicle (30), and the accumulated snow or the firm ice and snow can be removed because of the complete functions of the multifunctional road ice and snow removing machine. The multifunctional road ice and snow removing machine is suitable for all villages and towns, cities, national highways, highways, airdromes, and the like.
Owner:赵瑞国

Pilot-operated type solenoid valve for gas well wellhead and valve plug lifting mechanism

The invention discloses a lifting mechanism for a valve plug of a solenoid valve. The lifting mechanism comprises a supporting plate arranged above a valve cap, wherein the upper end of a lifting rod of a main valve plug penetrates through the supporting plate; a rack extending along the length direction of the lifting rod is arranged on the lifting rod; a connector I is arranged on the upper surface of the supporting plate; a transmission shaft is rotatably arranged on the connector I; a gear which is engaged with the rack is arranged on one end of the transmission shaft; a ratchet wheel is arranged on the other end of the transmission shaft; the lifting rod is vertically arranged on the upper surface of the supporting plate; a long lever which is horizontally distributed is rotatably connected on the upper end of the supporting rod; the connection point of the supporting rod and the long lever deviates from the centre in the length direction of the long lever; the long lever is arranged above the ratchet wheel; and a pawl which is matched with the ratchet wheel is fixedly arranged on the long lever. The invention further discloses a pilot-operated type solenoid valve for a gas well wellhead adopting the valve plug lifting mechanism. The pilot-operated type solenoid valve for the gas well wellhead and the valve plug lifting mechanism can greatly increase the opening height of the solenoid valve main valve plug, increases the yield and prevents throttling.
Owner:北京众博达石油科技有限公司

Slot cooling structure capable of improving cooling efficiency of end wall of fixed blade channel

The invention discloses a slot cooling structure capable of improving the cooling efficiency of an end wall of a fixed blade channel. The slot cooling structure is characterized in that the radial height difference of a combustion chamber outlet end wall relative to the end wall of a fixed blade channel, and are slot structure a transition fillet structure are included; during actual gas turbine work, cooling jet flow introduced from a compressor enters a jet flow groove, the cooling jet flow is guided by the fillet structure on the contact segment of the slot and the end wall to enter the main flow area of a blade grid channel, and therefore the flowing separation of the slot cooling jet flow on a slot outlet during entering the main flow is reduced, and due to the transition fillet, whenthe slot cooling jet flow enters the main flow, the inward jetting angle is small; in addition, the relative height exists between the combustion chamber outlet end wall and the end wall of the fixedblade channel, the manual effect of the main flow and the slot cooling jet flow on the slot outlet is obviously weakened, the slot cooling jet flow can be tightly attached to the end wall to carry out sufficient cooling protection on the end wall of a downstream fixed blade channel end wall.
Owner:XI AN JIAOTONG UNIV

Wind power generation device capable of changing pitch angles

The invention discloses a wind power generation device capable of changing pitch angles. The wind power generation device is aimed at automatically adjusting the pitch angles of blades in the wind power generation device according to different wind speeds so as to work safely under a strong wind power level condition. Damping paddles are movably arranged on damping paddle supporting plates through pin shafts, the damping paddle supporting plates are fixedly arranged at the left end of a central shaft through first nuts and connecting keys, spring plate supporting seats are fixedly arranged on the central shaft, one ends of the spring plates are fixedly connected on the spring plate supporting seats, and the other ends of the spring plates are provided with annular sleeves; and the left ends of bolt pin shafts are installed in the annular sleeves of the spring plates, the right ends of the bolt pin shafts are fixedly connected on flow guide cover supporting seats, sliding bearings are fixedly arranged on sliding bearing U-shaped supporting seats, flange shafts are fixedly arranged on the sliding bearing U-shaped supporting seats through the sliding bearings, and the blades are fixedly connected on the flange shafts through bolts. According to the wind power generation device, the pitch angles of the blades are adjustable.
Owner:QINGDAO UNIV OF SCI & TECH

Micro-switch mounting structure for microwave oven

The invention relates to a micro-switch mounting structure for a microwave oven, wherein the microwave oven comprises an oven base / body internally provided with more than one locking device, an oven cavity for cooking food, and an oven cover / door hinged with the oven base / body, wherein the oven cover / door is provided with a fastening part connected to the locking device; at least one locking device is provided with a micro-switch; the locking device comprises a locking plate, and the locking plate and the fastening part are fixed with each other; the micro-switch and the locking plate are mutually separated; and the locking plate is provided with a switch touch block for triggering the switch button of the micro-switch. According to the invention, the locking plate and the micro-switch are arranged at different sides of a bracket, namely being mutually separated, and even the liquid in the oven cavity and at the outside flows to the locking device through the plug hole of the fastening part, the liquid cannot flow onto the micro-switch, so the efficient safe work of the micro-switch is ensured and the microwave oven has a more compact waterproof structure. The micro-switch mounting structure has the advantages of simple and reasonable structure, good waterproof property, safety, reliability and wide application range, and is convenient to operate.
Owner:GUANGDONG GALANZ MICROWAVE OVEN & ELECTRICAL APPLIANCES MFG
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