31results about How to "Reduce inspection and maintenance costs" patented technology

The invention discloses an engine speed control system and an engineering machine. The engine speed control system comprises an acquisition conversion unit, a calibration unit and a calculation transmitting unit. The acquisition conversion unit is used for acquiring signals about statuses of an accelerator pedal and converting the signals into digital signals, the signal about the status that the accelerator is not stepped corresponds to a first digital signal, and the signal about the status that the accelerator pedal is full stepped corresponds to a second digital signal. The calibration unit is used for subjecting the digital signals obtained by the acquisition conversion unit to data acquisition with engine speed, the first digital signal corresponds to idle speed, and the second digital signal corresponds to maximum adjustable speed. The calculation transmitting unit is used for calculating the corresponding engine control speed according to the current digital signal obtained by the acquisition conversion unit and transmitting the engine control speed to an engine electro-control unit. By the use of the engine speed control system, speed fluctuation due to the fact that analog signals are interfered can be avoided, precision in controlling engine speed can be improved and cost in check and maintenance of the accelerator pedal can be reduced.

A Brillouin distributed optical fiber sensing based structural joint monitoring device is characterized by comprising steel plate bases (9), a linear steel sheet (5) and an L-shaped steel sheet (8) are mounted on each steel plate base (9), a pulley (6) is mounted at each of a suspension arm end of each linear steel sheet (5) and a corner end of each L-shaped steel sheet (8), an optical fiber (1) for stretching detection is wound on the two corresponding pulleys (6) at the suspension arm ends of the linear steel sheets (5) on two sides of a structural joint, an optical fiber (2) for contracting detection is wound on the two corresponding pulleys (6) at the corner ends of the L-shaped steel sheets (8) on two sides of the structural joint, an optical fiber (3) for temperature compensation detection is connected between the optical fiber (1) for stretching detection and the optical fiber (2) for contracting detection, and each of the optical fiber (1) for stretching detection and the optical fiber (2) for contracting detection is connected with a Brillouin distributed optical fiber demodulating system through a respective connecting optical fiber (4). The Brillouin distributed optical fiber sensing based structural joint monitoring device is capable of monitoring the stretching quantity and the closing quantity of the structural joint, achieves temperature self compensation and effectively overcomes the shortcomings when the optical fibers are simply laid.

The invention provides an intelligent shared charging base station of a mobile phone. The intelligent shared charging base station comprises a charging box, wherein the charging box comprises a box body, and an opening is formed in the box body; a shielding door component used for shielding and blocking the opening is arranged at the opening; a charging plug component which is movably arranged isarranged in the box body; a power driving device used for driving the shielding door component to be mutually switched between an open state and a shielding state or driving the charging plug component to be mutually switched between an extending state and a retraction state is arranged in the box body; a shielding transmission mechanism is arranged between the power driving device and the shielding door component, and a lifting control mechanism is arranged between the power driving device and the charging plug component; a controller used for controlling the running process of the power driving device is further arranged in the box body; the shielding door component comprises two shielding doors which are movably arranged, wherein the two shielding doors are symmetrically arranged in theopening direction of the opening; and the two shielding doors are matched with each other and are matched with the opening and are used for shielding and plugging the opening.

The invention discloses a method for cooperatively treating nitrobenzene wastewater by a coal water slurry technology, which comprises the following steps: deoxidizing nitrobenzene wastewater, reacting iron with nitrite in the nitrobenzene wastewater, and preparing coal water slurry from the reacted nitrobenzene wastewater, coal and an additive. The invention provides a corrosion control method from the aspect of process, corrosion causes are eliminated, non-planned shutdown caused by corrosion problems is reduced, excessive investment cost of material resources, manpower, financial resources and the like of enterprises is avoided, safe, stable and long-period operation of a coal gasification device is guaranteed, and meanwhile, water resource saving and wastewater resource utilization capabilities are stably improved.

The invention discloses a set of immersive interactive software system for power station boiler transfer equipment based on a virtual environment technology, which relates to the technical field of virtual environments and comprises a three-dimensional virtual visualization system which comprises a three-dimensional virtual environment, model animation simulation, three-dimensional data visualization, interactive behaviors and information description. The three-dimensional virtual environment is used for performing real-time dynamic simulation on thermal power plant equipment, natural environment and motion simulation; according to the invention, the virtual reality technology is applied to actual production condition monitoring and analysis result processing for large-scale complex equipment such as the boiler auxiliary machine, so that the product model and data perceptibility can be increased, the degree of freedom of product development can be enhanced, and higher-level information details can be obtained; non-specialists without related technical backgrounds can understand the method more easily; the method has a very wide application prospect in the fields of virtual simulation training, application research and the like due to better immersion and higher-level information details.

The invention provides a mechanized fully mechanized mining system for a non-coal mine, and belongs to the technical field of non-coal mine mining equipment. The mechanized fully mechanized mining system involves an ore conveyor, a mining machine, an ore loader and a hydraulic shield support, wherein the ore conveyor is arranged parallel to a fully mechanized coal mining face and is provided witha mining machine travelling track; the mining machine is arranged on the ore conveyor, and can move in the direction parallel to the operation of the ore conveyor; the ore loader is in lap joint withthe head of the ore conveyor; the hydraulic shield support is arranged on the side, away from the fully mechanized coal mining face, of the ore conveyor in parallel; and both the ore conveyor and theore loader are belt conveyors. Mechanized fully mechanized mining of the non-coal mine is realized through using a coal mine underground mining technology, the mining efficiency of the non-coal mine,especially aluminum ore and phosphorite is greatly improved, the mining cost is reduced, and in the transportation process of the ore, and adhesive tape or a belt in the ore conveyor or the ore loaderis kept relatively stationary, so that the abrasion and the corrosion of the equipment are greatly reduced, and the service life of the equipment is prolonged.

The invention discloses a static wireless signal quality pre-warning device, system and method. The system comprises a train, an antenna connected with vehicle-mounted wireless equipment of the train, a wireless access point and the signal quality pre-warning device. The signal quality pre-warning device carries out wireless communication with the antenna of the vehicle-mounted wireless equipment through the wireless access point and has access to a signal quality pre-warning program. When the signal quality pre-warning device detects that the quality of a wireless signal from the vehicle-mounted wireless equipment of the train is normal, the signal quality pre-warning device is shut off, and relative equipment is needless to be detected and maintained. When the device detects that the quality of the signal from the vehicle-mounted wireless equipment of the train is abnormal, the signal quality pre-warning device is started, and relative equipment which is detected to be abnormal is detected and maintained. The static wireless signal quality pre-warning device, system and method solve the technical problems that in the prior art, detection and maintenance of a wireless transmission device of a vehicle are in a periodical maintenance and detection stage, state maintenance cannot be achieved, and particularly, quality of signals cannot be detected and maintained.

The invention discloses a motor detection method and device. A motor is used for driving a circuit breaker, a motor rotating shaft is connected with the circuit breaker through a brake disc, the method comprises the steps that an actual movement curve of the motor rotating shaft is detected, and the movement curve is a curve that the rotating angle of the motor rotating shaft changes along with time; comparing the actual movement curve with a preset movement curve; if the angle difference value of the actual movement curve and the preset movement curve at any moment is smaller than the presetangle value corresponding to the moment, judging that the working state of the motor is normal; If the angle difference value of the actual movement curve and the preset movement curve at any moment is greater than or equal to the preset angle value corresponding to the moment, judging that the working state of the motor is abnormal. By obtaining the actual movement curve of the motor rotating shaft and comparing the actual movement curve with the preset movement curve, whether the working state of the motor is normal or not is judged, the intelligent level and reliability of the high-voltageswitchgear are improved, conversion from periodic maintenance to state maintenance is achieved, and the overhaul cost is saved.

The invention relates to a mechanical sealing device of a high-pressure water pump. The mechanical sealing device of the high-pressure water pump comprises a movable sealing ring and a static sealing ring, wherein the movable sealing ring is mounted on a rotating shaft, and the static sealing ring is mounted in a mechanical sealing seat; a groove is formed in the outer ring of the movable sealing ring; a limiting block is arranged in the groove; a spring is arranged on the outer ring of the limiting block in a sleeving mode; the movable sealing ring is pressed towards the static sealing ring through the spring; and a circular arc groove is additionally arranged on the outer ring of the static sealing ring. By adopting the structural design, the inspection and maintenance cost is greatly reduced, the operation stability of equipment is improved, and as the circular arc groove is additionally formed in the outer ring of the mechanical seal static ring, the liquid film thickness of the two end faces is increased, and the lubricating effect is improved.

The invention discloses a method for retarding corrosion of a rectification system of a vinyl acetate device, and belongs to the technical field of chemical production. The method comprises the following steps: detecting the content of corrosive substances in a rectification system in a vinyl acetate device; comparing the detected content of the corrosive substance with a fortification value of the corrosive substance established according to a service material of the rectification system; and when the content of the detected corrosive substance is higher than the fortification value of the corrosive substance, discharging part of the corrosive substance from a discharge port arranged at the tail end of the rectification system. The method can effectively avoid or reduce non-planned shutdown caused by the corrosion problem, reduce the investment cost of equipment pipeline replacement, labor and the like of an enterprise, reduce the safety risk, and guarantee safe, stable and long-period operation of a rectification section device.

An agricultural irrigation device comprises a water pump provided with a driving motor and a flow metering device arranged on the water pump and further comprises an RTU terminal and a dynamic power source embed underground and connected with the driving motor. The RTU terminal comprises a control circuit board and a power module which are mutually connected. The control circuit board comprises an MCU, a data collecting module and a relay driving circuit, wherein the data collecting module and the relay driving circuit are respectively connected with the MCU. The data collecting module is connected with the flow metering device. The relay driving circuit is connected with the dynamic power source. The dynamic power source comprises a dynamic electric bus wiring terminal, an alternating-current contactor, a first electromagnetic relay and a second electromagnetic relay. The alternating-current contactor is arranged between the dynamic electric bus wiring terminal and the driving motor. The first electromagnetic relay is respectively connected with the relay driving circuit and the alternating-current contactor. The second electromagnetic relay is respectively connected with the power module and the dynamic electric bus wiring terminal. According to the agricultural irrigation device, the service life of the RTU terminal is prolonged and the inspection and maintenance cost of the agricultural irrigation device is reduced.

The invention provides a dust removal system and a dust removal process method for preparing acetylene from wet calcium carbide, and relates to the technical field of safe and environment-friendly digestion of calcium carbide dust. Comprising a dust fan cover system, a conveying pipeline system, a gas protection system, a dust cleaning system, a dust collecting system, a control system, an emptying system and a fireproof system. The output end of the dust fan cover system is connected with the conveying pipeline system; the dust cleaning system is used for cleaning calcium carbide dust in the conveying pipeline system; the dust collecting system is arranged at the tail end of the conveying pipeline system; according to the invention, a brand-new low-walking high-climbing wave type conveying pipeline design concept is adopted, so that the dust can be effectively shunted in the conveying process, the dust content of the conveying system is reduced, and the efficient operation of the system is kept.

The invention discloses an escalator fault signal processing system based on temperature and vibration. The system comprises a base and a fault diagnosis module arranged on the base. The base is used for fixing the fault diagnosis module on a to-be-detected escalator or detaching the fault diagnosis module from the to-be-detected escalator. The fault diagnosis module comprises a signal acquisition module, a signal conversion module, a signal processing module, a signal storage module and a fault display module. The system is portable and detachable, various detection requirements can be met, the detection and maintenance cost is reduced, and the maintenance efficiency is improved.