46results about How to "Reduce damage accidents" patented technology

The invention discloses corrosion damage warning method of in-wall in high-temperature reactor, comprising the following steps: according to the quality and energy conservation principles calculate average temperature of gas and temperatures on the border of connected slag blanket at different position and height; obtain temperature in reactor by thermocouple, and according to this, calculate initial temperature distribution of exterior surface of flame retardant coating through Lagrange quadratic interpolation method; establish the steady-state thermal conductive partial differential reasoning equation of top and lateral section of the inner wall including the slag blanket; then calculate the inner wall temperature distribution and the thickness of the slag layer at different height including the slag blanket through the equation; predict the border position of solid slag blanket attached on the in-wall of the reactor; integrate into the corrosion damage warning message of in-wall of reactor after judgment and compare of thickness of the slag layer at different height of the in-wall in reactor to warning threshold value. The invention provides accurate, fast and lower-cost corrosion damage warning methods of in-wall in high-temperature reactor.

The invention relates to a lightning protection evaluation system for a wind power plant. In order to overcome the defect that the existing lightning protection test detection cannot well reflect theeffectiveness and safety of the lightning protection effect of the wind power plant lightning protection device, the system mainly comprises five modules of a parameter input module, a lightning protection modeling module, a lightning stroke characteristic simulation module, a post-lightning-stroke overvoltage characteristic simulation evaluation module and an insulation optimization and evaluation report generation module. The method comprises the following steps of firstly, establishing a model of a terrain, a fan, a line, a tower, a lightning arrester and a grounding system of the wind power plant, simulating the lightning stroke characteristic of the wind power plant on the basis, and simulating the overvoltage characteristic of the wind power plant after lightning stroke to complete the systematic evaluation of the lightning protection effect of the wind power plant. According to the present invention, the wind power plant lightning protection effect can be systematically and completely evaluated, the safety and reliability of the wind power plant are improved, the equipment damage accidents caused by lightning stroke are reduced, the generating capacity of the wind power plant is improved, and the economic income of the wind power plant is increased.

The invention relates to an automatic pressing and packaging machine for aluminum sheets. The automatic pressing and packaging machine for aluminum sheets comprises a pressing device, a rotating device, a film fixing device and a control box. The control box controls the pressing device and the rotating device. The pressing device comprises a cylinder, a cylinder frame and a pressing plate, wherein the cylinder is fixed to the cylinder frame, and the pressing plate is fixed to an ejection rod of the cylinder. The rotating device comprises a turnplate, a rotating body, a rotating body base, a support column, a motor, a speed reducer, a big belt wheel, a small belt wheel, a belt and elastic balls. The turnplate is located below the pressing plate and integrally connected with the rotating body. The rotating body rolls on the rotating body base through the elastic balls. The support column stretches into an inner cavity of the rotating body base and the rotating body. The middle portion of the outer wall of the rotating body is integrally connected with the big belt wheel. The motor is connected with the speed reducer. The tail end of an output shaft of the speed reducer is connected with the small belt wheel. The small belt wheel drives the big belt wheel to rotate through the belt. According to the automatic pressing and packaging machine for aluminum sheets, operation is convenient, aluminum sheets can be pressed, manual film wrapping is not needed, and the efficiency is high; and it is guaranteed that damage, caused by transporting friction, to products is avoided.

The invention relates to a magnetic lifting handle, in particular to a magnetic lifting handle for assembling ferromagnetic precision workpieces. The magnetic lifting handle comprises two magnetic actuating mechanisms and rotating adjustment mechanisms connected between the two magnetic actuating mechanisms, each magnetic actuating mechanism comprises a magnetic seat, a middle connecting plate, a force bearing arm, an elastic positioning mechanism and a handle, the upper end faces of the magnetic seat are fixedly connected with the force bearing arms through the middle connecting plates, through holes are formed in the middle connecting plates, the elastic positioning mechanisms connected with the upper end faces of the magnetic seats are arranged in the through holes, one end of each force bearing arm is connected with one side of the corresponding handle, a connecting arm for connecting the corresponding rotating adjustment mechanism is arranged on the other side of the handle, each rotating adjustment mechanism comprises a ratchet, a pawl, a rotating shaft and a spring, the ratchets are fixed on the connecting arm of one magnetic actuating mechanism, rotating ends of the pawls are connected with the connecting arm of the other magnetic actuating mechanism through the rotating shafts, and large ends of the pawls are connected with the handle of the other magnetic actuating mechanism through the springs. The magnetic lifting handle is simple in structure, convenient to use, stable and reliable, and the precision ferromagnetic workpieces can be assembled without being scratched and stained.

The invention discloses a rolled piece position tracking device for a sectional material hot rolling finishing mill. The rolled piece position tracking device comprises a machine frame, a tracking region, a zero current sampling section, a tension adjustment section, a hot metal detector, a frequency converter, a man-machine interface local area network, a high-performance controller, a man-machine interface server and a local control panel, wherein the zero current sampling section and the tension adjustment section are arranged in the tracking region, and a rolled piece position tracking control module is arranged in the high-performance controller. A rolled piece position tracking method for a sectional material hot rolling finishing mill comprises the following steps that 1, the rolled piece position tracking control module is started; 2, the position of a rolled piece in the tracking region is calculated and is compared with the position values of the tension adjustment section and the zero current sampling section; 3, the rolled piece position tracking control module finishes the tracking procedure of the current tracking region according to cascade signals and steel occluding current change signals. The rolled piece position tracking device and the rolled piece position tracking method have the characteristics that the rolled piece tracking precision is high, the manual intervention is little, the yield of hot rolling sectional materials is high, the failure rate is low, and the labor cost is low. The rolled piece position tracking device and the rolled piece position tracking method can be widely applied to the technical field of sectional material hot rolling automation control.

The invention provides a power distribution network fault level prediction method and system considering weather factors. The method comprises the following steps: acquiring meteorological data of a set time period; inputting the meteorological data of the set time period into a pre-optimized fault level prediction model for prediction to obtain a fault level of the power distribution network of the set time period, wherein the optimized fault level prediction model is obtained by performing optimization training on historical meteorological data obtained in advance and the historical fault level of the corresponding power distribution network based on a multi-support vector machine. Based on the multi-support vector machine model, the accuracy of fault level prediction of the power distribution network is improved, and accurate early warning can be effectively carried out on the fault which is about to occur in the power distribution network.

The invention discloses a ground well casing capable of preventing mining damage, which comprises at least two casing bodies, a deflection joint and an expansion joint, adjacent casing bodies are connected by the deflection joint or the expansion joint, when in use, according to analysis results of strata displacement, the casing bodies are connected by the deflection joint in the depth corresponding to strata where the casing is easy to cut and twist, the casing bodies are connected by the expansion joint in the depth corresponding to strata where the casing is easy to pull and press, and the casing bodies are connected after the deflection joint and the expansion joint are connected in series in a small depth range corresponding to strata where the casing is easy to not only cut and twist but also pull and press, so that the casing can adapt to strata variation, thus reducing damage accidents of the well casing and guaranteeing smooth gas extraction through the ground well.

The invention belongs to the technical field of automatic control of thermal generator sets, and particularly relates to a checking method for preventing failure of a thermal process protection system of a thermal generator set. The thermal process protection system comprises the following elements: design of the logic of a main protection system of the set, design of an important auxiliary engine protection system of the set, measuring and sampling by an instrument, and allocation of DCS hardware addresses; the inspection method comprises the following steps: collecting the design data of the thermal process protection system, and knowing the composition condition, the operation mode and the operation parameters of the thermal process protection system of the thermal generator set; checking the thermal process protection system of the thermal generator set by referencing to the latest national electric power industry regulations and specifications, and finding design defects and potential safety hazards; proposing a regulating solution for on-site regulation, finishing a static test and a dynamic test, and putting the thermal generator set into safe operation; and if the requirements are not met, returning to the regulation and test steps till meeting the requirement. The checking method has the advantages that the checking steps are simple and clear, the safety and the reliability are realized, the on-site debugging process is simple, and the operation and the implementation are convenient.

The invention discloses a temperature-sensitive indication nut, comprising a pedestal, a temperature-sensitive element and an induction column. The pedestal is provided with a cylindrical storage slot with an opening in the top. An inner wall of the storage slot is provided with clamp grooves. The induction column is mounted in the storage slot. An outer wall of the induction column is provided with clamp claws cooperated with the clamp grooves. The induction column has a hollow cylindrical structure which is open at the lower end and closed at the top. The induction column is internally provided with the temperature-sensitive element. The temperature-sensitive indication nut is reasonable in design and simple in structure. The temperature-sensitive indication nut is mounted at a position, in need of temperature detection, of power equipment. The shape memory effect of shape memory alloy is utilized to timely monitor the temperature of a power line joint, thereby helping inspection persons to timely find the power line joint, and further grasping change in temperature of the power line joint. Therefore, potential safety hazards of system operation are eliminated, and the normal operation of system equipment is ensured.

The invention relates to the technical field of household appliances and discloses an anti-burning electric kettle. The kettle comprises a kettle body. The kettle body comprises a heat conduction sheet. The outer surface of the heat conduction sheet is fixedly connected with a heat radiation board. Two sides of the heat radiation board are in clamp connection with two sides of the heat radiation board. The top of the kettle body is movably connected with a kettle cover. The top of the kettle cover is fixedly connected with a lifting handle. The upper surface of the kettle cover is equipped with an air communicating pipe. One side of the kettle body is fixedly connected with a kettle spout. The upper surface of the kettle spout is movably connected with a kettle spout cover. The other sideof the kettle body is fixedly connected with two fixing blocks. One sides of the two fixing blocks are fixedly connected with connecting rods. A holding gap is fixedly connected between the two connecting rods. When water is boiled, water does not overflow because the kettle spout cover is added on the kettle spout and is converted into water vapor by the air communicating pipe and finally discharged. Damage to a plug seat is avoided because water is boiled and overflows. Additionally, the kettle is safer.

The invention relates to a crankshaft driving mechanism of a press machine. In the crankshaft driving mechanism, a duplex herringbone gear at a crankshaft end is correctly arranged on a crankshaft; a duplex herringbone gear at an output shaft end of a gear case is correctly arranged on the output shaft of the gear case; the gear case is arranged on a lathe bed of the press machine; and the duplex herringbone gear at the crankshaft end is ensured to be correctly engaged with the duplex herringbone gear at the output shaft end of the gear case. A connecting rod and the crankshaft are correctly arranged on the crankshaft driving mechanism; the connecting rod is correctly connected with a sliding block; and other delivery parts are correctly arranged on the crankshaft driving mechanism.