3results about How to "Improve starting efficiency" patented technology

The invention relates to a gas turbine engine, a starting method and system of the gas turbine engine and a medium. The starting method comprises the steps that S1, a high-pressure rotor of the gas turbine engine is driven by an air turbine starter to rotate, the rotating speed of the high-pressure rotor is subjected to closed-loop control according to the air inlet pressure of the air turbine starter to reach the set rotating speed, and whether the engine rotor has the thermal bending effect or not is judged according to a vibration signal of the high-pressure rotor of the engine; and S2, if it is judged that the hot bending effect exists in the step S1, closed-loop control is conducted on the rotating speed of the high-pressure rotor according to the air inlet pressure of the air turbine starter, and the rotating speed is maintained to the set rotating speed till whether the engine rotor has the hot bending effect or not is judged according to the vibration signal of the high-pressure rotor of the engine.

The utility model discloses a welding gun electrode cap coping device which comprises a driving mechanism, an adjusting mechanism connected with the driving mechanism, a rotating shaft, a swing arm rod, a coping mechanism and a floating mechanism connected with the coping mechanism, and the adjusting mechanism comprises a first rotating rod, a second rotating rod and a connecting rod connecting the first rotating rod and the second rotating rod; the connecting rod comprises a sleeve rod and a telescopic rod; the telescopic rod can slide in the sleeve rod, the two ends of the telescopic rod are rotationally connected with the first rotating rod and the second rotating rod respectively, and one end of the second rotating rod is connected with the swing arm rod through the rotating shaft. Therefore, not only can the grinding work of the welding machine electrode cap be met, but also effective avoidance can be realized, so that a welding gun can conveniently grab a workpiece for welding, the starting efficiency of a production line is improved, and the labor cost consumed by grinding is reduced. Therefore, the problems of low production line starting efficiency and serious labor consumption in the prior art are solved.

The application provides a kind of adaptive soft start control method and system based on load prediction, before the start of belt conveyor, the initial load weight value on belt conveyor is obtained;Obtain the initial soft start parameter set corresponding to the load interval where the initial load weight value is located, the initial soft start parameter set includes start time, start curve slope and torque limit value;In response to the input of initial soft start parameter set, start the motor of belt conveyor;Within the first preset time period after the start of belt conveyor, real-time collection of actual load weight value and motor current value in operation;Based on the actual load weight value, obtain the fluctuation range of motor current value;Based on the relationship between the collected motor current value and the fluctuation range, correct the initial soft start parameter set;Real-time feedback of the corrected parameters to motor controller;The application effectively prevents belt slip, belt breakage and other faults, prolongs the service life of the equipment, improves the operation efficiency and safety of the whole conveying system.