42results about How to "Avoid frequent downtime" patented technology

The invention discloses a control method of an electronic expansion valve, a radiation air conditioner and a storage medium. After a startup instruction is received, operation mode information in thestartup instruction is obtained; when the operation mode is refrigeration or dehumidification, the openness of the electronic expansion valve is set as preset initial openness; finally, after the radiation air conditioner is operated by a first preset time length according to the preset initial openness, a superheat degree of an evaporator is calculated, and the openness of the electronic expansion valve is adjusted according to the superheat degree, so that liquid impact and damage of the compressor caused by halfway evaporation of a refrigerant in the evaporator are prevented, frequent stopof the compressor caused by higher superheat degree of the evaporator is prevented, the control precision of the superheat degree of the radiation air conditioner is improved, and the operation stability and the life of the compressor are guaranteed.

The invention discloses an energy requirement correction method of an air conditioning system. The energy requirement correction method of the air conditioning system comprises the following steps that the operating mode of the air conditioning system, the indoor environment temperature in the current operating mode and the coil pipe temperature of an indoor heat exchanger are acquired; the difference value between the indoor environment temperature and the preset indoor environment temperature is calculated, and the current energy requirement correction value of the air conditioning system is determined according to the temperature interval where the difference value is located; and when the coil pipe temperature of the indoor heat exchanger meets preset conditions, the current energy requirement correction value is adjusted. The invention further discloses the air conditioning system and a computer readable storage medium. According to the air conditioning system, the energy requirement correction method and the computer readable storage medium, in the energy requirement correction process of the air conditioning system, the phenomenon that the air conditioning system is frequently shut down due to the fact that the temperature frequently reaches the preset indoor environment temperature can be avoided, and therefore the comfort feeling of a user is improved.

The invention discloses a safety control method for a TRT (Blast Furnace Top Gas Recovery Turbine Unit) fixed blade servo control system. In the method, when a TRT unit runs normally, blast furnace top pressure is adjusted and controlled by the TRT unit fixed blade servo control system; when the TRT unit fixed blade system fails, an electro-hydraulic servo valve quits the control over a fixed blade executing mechanism; a PLC (Programmable Logic Controller) system of the TRT unit outputs a control signal to a bypass electromagnetic valve; the furnace top pressure is restored to be stable undermain adjustment of a blast furnace pressure reducing valve bank and auxiliary adjustment of the bypass electromagnetic valve; operating personnel check on line and manually repair; and if the system cannot be normally restored in a short time, the TRT unit is emergently stopped. According to the method disclosed by the invention, the fixed blade servo system can be checked without stop, the reason of failure and the finally adopted measure are determined, and unnecessary frequent stop of the TRT unit can be avoided. By applying the method, the safety of the system during emergency failure of the fixed blade servo control system can be greatly enhanced; and according to site validation put into operation, the production safety of blast furnace smelting is greatly guaranteed by the method.

The invention discloses a wood fiber production method, which comprises: S1, material selection; S2, skin removal; S3, water washing; S4, slicing; S5, pre-cooking; S6, pressurizing cooking; S7, grinding; S8, softening; S9, drying; S10, air selection; S11, nutrient solution spraying; and S12, packaging warehousing. According to the present invention, the wood fiber produced through material selection, skin removal, water washing, slicing, pre-cooking, pressurizing cooking, grinding, softening, drying, air selection, nutrient solution spraying, packaging warehousing and other steps can be well used in spray seeding technologies; the wood fiber produced by the method has good softness; and during the spray seeding, when the wood fiber, the water and the binder are mixed, the wood fiber has good water absorption, such that each wood fiber can absorb a large amount of water so as to achieve good water content.

The invention relates to a high-efficiency control system of a disc water filter and a control method. A water inlet end of the disc filter is connected with a three-way valve; an outlet end of the disc filter is connected with a pneumatic cutoff valve; an electromagnetic valve I and an electromagnetic valve II are arranged on the three-way valve and the pneumatic cutoff valve respectively and connected to a PLC (programmable logic controller); the disc filter and the three-way valve are connected with a forward filtration pipeline and a reverse cleaning pipeline; the PLC circularly controls opening and closing of the electromagnetic valves to further switch opening and closing of the three-way valve and the pneumatic cutoff valve for forward water filtration and reverse disc filter cleaning; the defect of power pipeline blocking caused by dirt in water is overcome; a control mode is simplified; backwash water pressure is increased; the backwash time is adjusted flexibly; a fault rateis decreased; the maintenance time is shortened; a running rate of equipment is increased; and normal production is ensured.

A large-scale mill process control system relates to mining machinery, particularly a large-scale mill process control system that, through discrimination, avoids distorted signals and effectively avoids frequent shutdowns due to false alarms and faults. The large-scale mill process control system of the invention is installed on the mill and is characterized by comprising an internal structure, an external auxiliary unit and a mill monitoring system, wherein the internal structure, the external auxiliary unit and the mill monitoring system are connected by wires. The invention prevents distortion signals from entering the logical interlocking control unit and avoids frequent shutdown of the mill due to false alarms and faults by performing discrimination on all the detection signals of the external sensor, adds predictive control functions of mechanical properties to effectively control the degree of mechanical damage to bearings, bearing bushes, gears, etc., adds an online operationfault handling function, enables the gear oil lubrication, temperature detection and other faults to be handled without stopping the machine, and reduces the frequency of unnecessary shutdown of the mill.

The invention discloses a CT collision protection device and a CT collision protection method thereof. The CT collision protection device comprises a collision distance sensor, an infrared induction sensor, a misoperation processing unit and a control feedback unit, wherein the collision distance sensor is vertically arranged on the end face, close to a CT rack housing, of a CT scanning bed body;when it is detected that the CT rack housing enters the safe distance of the CT scanning bed board, warning information is output; the infrared induction sensor is arranged at the upper end of the CTrack housing and outputs warning information after detecting that an examined patient leaves the safe area; the misoperation processing unit is used for outputting a collision signal when one of the CT scanning bed board and the CT rack housing moves; the control feedback unit is connected with a CT motion module; and the collision distance sensor, the infrared induction sensor and the misoperation processing unit are all connected with the control feedback unit, so that the CT motion module is controlled to stop moving when the warning information and the collision signal are received at thesame time, and collision between the CT scanning bed and the CT rack housing is effectively prevented.

The invention relates to an elevator traction mechanism with a safety loop detecting system, and the elevator traction mechanism solves the defects in the prior art. According to the technical scheme,the key point is that the elevator traction mechanism comprises a safety loop, a plurality of switch detecting modules, a safety bus and an upper control system, wherein the safety loop comprises a master switch, a plurality of limiting switches and a safety switch; a power supply is connected to a primary safety contactor coil through the safety loop; each switch detecting module is correspondingly provided with a master switch, a limiting switch or a safety switch, the output end of the switch detecting module is in communication connection to the upper control system through the safety bus, the first detecting end of the switch detecting module is connected to a movable contact of the master switch, a movable contact of the limiting switch or a movable contact of the safety switch, andthe second detecting end of the switch detecting module is connected to a movable contact of the master switch, a movable contact of the limiting switch or a movable contact of the safety switch; thesafety bus is used for connecting all switch detecting modules to the upper control system; and the upper control system receives output signals of all switch detecting modules and a synchronous controller through the safety bus to control operation of an elevator.

The invention discloses a wire drawing machine convenient for material changing, and relates to the technical field of steel wire production device. A winding machine of the wire drawing machine comprises a machine base fixed on the ground, wherein a rotary disc which is rotatably connected to the machine base is arranged on the top of the machine base; winding rollers which are symmetrically arranged are separately arranged at the two sides of the rotary disc; the winding rollers are detachably connected to the rotary disc through movable connecting parts; the rotary disc is rotatably connected with the machine base through a rotary shaft which is perpendicular to the horizontal plane; a rotary mechanism is arranged in the machine base for driving the rotary shaft and the rotary disc to rotate by 180 degrees around the central line of the rotary shaft and the rotary disc; after a wire is wound, a standby winding roller can be rotated to a working position for directly working, and anoperator can dismount and replace the winding roller at the standby position, so that equipment can be guaranteed to be in a working state all the time, and therefore, frequent halt is avoided, time for replacing the winding roller can be greatly shortened, and working efficiency is improved.

The invention discloses chili temperature sterilization equipment for chili sauce processing and an operation method, and particularly relates to the technical field of chili processing.The chili temperature sterilization equipment comprises an equipment rack, a cleaning pool is fixedly arranged at the top of the equipment rack, a lifting support is fixedly arranged in one end of the cleaning pool, and a lifting conveying belt is movably arranged outside the lifting support; a material receiving bin is fixedly arranged outside one end of the cleaning pool, the top end of the lifting support stretches into the material receiving bin, an ultraviolet sterilization lamp tube is fixedly arranged on one side of the top of the material receiving bin, and a pepper processing tank is fixedly arranged at one end of the equipment rack. Pepper is fed into the pepper cleaning pipe, the cleaning roller stirs the pepper to clean the pepper, meanwhile, the aeration head performs aeration treatment, bubbles enter the pepper cleaning pipe to further clean the pepper, the pepper cleaning effect is good, sterilization treatment of the pepper is facilitated, and the pepper treatment quality is improved.

The invention discloses an elevator traction mechanism. The elevator traction mechanism comprises an elevator control system for controlling elevator running, a traction machine, a traction wheel connected with the traction machine, and traction ropes wound around the traction wheel. One ends of the traction ropes are connected with an elevator car, the other ends of the traction ropes are connected with counter weights, the traction wheel is coaxially connected with a worm gear, a worm is engaged with the worm gear, and accordingly a traction wheel locking mechanism is formed. The worm is connected with a protection motor, and the protection motor and the traction machine adopt servo motors. A synchronous controller controls the rotation speed of the traction machine and the protection motor according to the transmission ratio of the worm and the worm gear, and the rotation speed ratio of the worm and the worm gear and the transmission ratio of the worm and the worm gear are kept synchronous. When the load of the protection motor exceeds the maximum set value, the elevator control system cuts off a power source of the protection motor and the traction machine. By means of the elevator traction mechanism, reliable traction wheel braking can be achieved when the elevator system is powered off or breaks down, and safety accidents of elevator car roof rushing or bottom squatting are effectively avoided.

The invention discloses a traction device provided with safety tongs. The traction device comprises an elevator control system used for controlling an elevator to operate, a tractor, a traction wheelconnected with the tractor, and a traction rope wound around the traction wheel. One end of the traction rope is connected with a car platform sill, and the other end of the traction rope is connectedwith a counter-weight. The traction wheel is in coaxial connection with a worm wheel. A worm is engaged with the worm wheel, and thus a locking mechanism of the traction wheel is formed. The worm isconnected with a protecting motor. Servo motors are adopted as the protecting motor and the tractor. The synchronous controller controls the rotating speed of the tractor and the protecting motor according to the transmission ratio of the worm and the worm wheel, and thus the rotating speed ratio of the worm and the worm wheel keeps synchronous with the transmission ratio of the worm and the wormwheel. When the load of the protecting motor surpasses the maximum set value, the elevator control system cuts off a power source of the protecting motor and the tractor. The car platform sill is provided with the car platform sill safety tongs. According to the traction device, when an elevator system is powered off or breaks down, reliable braking of the traction wheel is achieved, and the safety accidents of up-going and collapsing of the car platform sill are effectively avoided.

A measuring method used for reciprocating movement includes that a toothed belt is fixed on a machine tool body, the toothed belt is longer than a moving distance of a workbench and is parallel to a moving direction of the workbench, a detecting device comprises an incremental encoder, a synchronous gear and a connector, the synchronous gear and the incremental encoder are connected through the connector, a central shaft of the synchronous gear is fixed on a gear box casing through a bearing seat, an extending arm of the gear box casing is fixed on a reciprocating workbench, the synchronous gear meshes with the toothed belt, flange discs are arranged at two ends of the connector, and a central shaft of a synchronous belt gear is connected with a spindle of the incremental encoder through ashaft coupler in the connector.

The invention provides a finished product solid tray shaping device which comprises a first baffle, a second baffle, a first connecting rod, a second connecting rod and a brush, and the lower end of the first baffle and the lower end of the second baffle are used for being arranged on the two sides of a conveying chain machine correspondingly. The two ends of the first connecting rod are connected with the front portion of the upper end of the first baffle and the front portion of the upper end of the second baffle correspondingly. The second connecting rod is parallel to the first connecting rod, and the two ends of the second connecting rod are connected with the rear portion of the upper end of the first baffle and the rear portion of the upper end of the second baffle respectively. A plurality of horizontally-arranged brushes are evenly distributed on the inner wall of the first baffle from top to bottom, and a plurality of horizontally-arranged brushes are evenly distributed on the inner wall of the second baffle from top to bottom. The upper end of the first baffle, the first connecting rod, the upper end of the second baffle and the second connecting rod jointly form an isosceles trapezoid structure. According to the shaping device, shaping of the finished solid trays can be well achieved, and the stack shape of the finished solid trays is regular.

The invention discloses efficient comprehensive winnowing equipment with an intelligent cleaning function, and relates to the field of garbage treatment. The equipment comprises a first-stage fan assembly, a second-stage fan assembly, a third-stage fan assembly, a bouncing belt section, a winnowing light object discharging belt conveyor, a winnowing bin, a settling chamber and an air return structure with an automatic cleaning function. According to the equipment, three-stage winnowing is carried out on light objects through the first-stage fan assembly, the second-stage fan assembly, the third-stage fan assembly and the third-stage fan assembly, four-stage winnowing is carried out on heavy objects, four-stage winnowing is carried out on the light objects through the bouncing belt section, and then efficient comprehensive winnowing is achieved. The air return structure uses wind power internal circulation for dust raising control, and the environmental protection requirement is met. An air return port filter screen is automatically cleaned through a cleaning device, the labor intensity of workers is reduced, and frequent shutdown is avoided.