6results about How to "Less fragile" patented technology

The invention discloses an intelligent combined control method applied to a hydropower station drainage system, and the method comprises the steps: carrying out the calculation of the drainage demands of a hydropower station, and dividing the drainage demands of the hydropower station into low, medium and high drainage demands; according to a fuzzy rule, outputting membership degrees of low, medium and high drainage demands and a comprehensive drainage demand; the start-stop alternating logic of the pump is constructed based on the membership degrees of the low, medium and high drainage requirements; performing fault analysis on the running state of the pump; according to the method, starting, stopping and operation parameters of the three drainage system devices can be automatically adjusted according to the actual operation condition of the hydropower station, so that the purposes that normal operation and safety of a unit are guaranteed, safe maintenance of the unit is facilitated, meanwhile, it is guaranteed that the interior of a plant is not accumulated with water or moist, and the safety and economical efficiency of the hydropower station are improved are achieved.

The utility model discloses an anti-collision damping sheath for an electric bed frame, and relates to the technical field of electric bed frames, the anti-collision damping sheath comprises a bed frame body, the left side and the right side of the bed frame body are both fixedly connected with two sliding sleeves, the interiors of the four sliding sleeves are all slidably connected with moving rods, the front ends of the two moving rods on the rear side are both fixedly connected with buffer blocks, and the buffer blocks are fixedly connected with the left side and the right side of the bed frame body. Protective blocks are fixedly connected to the left side and the right side of the bed frame body, rectangular frames are slidably connected to the upper sides and the lower sides of the side faces of the protective blocks, and protective plates are fixedly connected to the opposite sides of every two rectangular frames in one group. Two connecting strips are in contact with pressure generated by collision, so that a third pressure spring is extruded, meanwhile, two front connecting strips drive two front moving rods and a moving block to move backwards, a rear connecting strip drives two rear moving rods and a round frame to move forwards, a second pressure spring is extruded, the pressure borne by the bed frame body is buffered, and the bed frame body is prevented from falling off. And the possibility of damage to the bed frame body is reduced.

The utility model relates to a high-stability main frame of a rack. The high-stability main frame of the rack comprises a rack body, a plurality of supporting blocks are arranged at the bottom of the rack body; the middle of the supporting block is slidably connected with a sleeve. The sleeve is arranged on the supporting block in a sleeving manner; multiple groups of second hinge seats are arranged at the bottom of the inner side wall of the sleeve; the side wall of the bottom of the supporting block is fixedly connected with a plurality of groups of first hinge seats; a damper is arranged between the first hinge seat and the second hinge seat, a supporting block and a sleeve are arranged below the machine frame body, when the machine frame body vibrates during working, vibration force is transmitted to the supporting block and the sleeve through the supporting block, the vibration is counteracted by a buffer spring and the damper located at the joint of the supporting block and the sleeve, and therefore the vibration is reduced, and the service life of the machine frame body is prolonged. Therefore, the problem that when equipment on the rack body works, the rack body is prone to being damaged due to vibration is solved, protection of the rack body to the equipment during working is improved, and the service life of the rack body is prolonged.

The utility model relates to the field technical field of electric power pipe, a kind of high flexibility electric power pipe, including conducting layer and insulating layer, the inner wall of insulating layer is fixedly connected with conducting layer, inner nameplate is processed in the outer wall of insulating layer, the outer wall of insulating layer is fixedly connected with plastic sheath, the outer wall of plastic sheath is connected with reinforcing mechanism. Through the multilayer composite structure design of reinforcing mechanism, the mechanical strength and durability of electric power pipe are significantly improved, the reinforcing layer is woven with high-strength fiber material, cooperates the cavity structure of special design, maintains excellent compression resistance while reducing weight, the surface spiral groove design of protection mechanism is not only enhanced flexibility, can adapt to various complex working conditions, effectively reduce easy to damage under frequent bending movement working condition.

The invention discloses a hydropower station drainage system control method based on a PID algorithm, and the method comprises the steps: testing a drainage pump, and constructing a characteristic curve based on the power and drainage rate of the drainage pump; calculating the water level increasing rate of the water-collecting well; judging whether the pump is started or not at present, and if not, initializing pump starting based on the water level increasing rate; calculating the given power of the drainage pump based on the water level increasing rate and a PID algorithm; adjusting drainage pump power and executing circulation; the method solves the problems that in the prior art, due to extensive drainage control logic of a hydropower station, equipment is started and stopped frequently, a large amount of water leakage cannot be handled, and the equipment is damaged easily, and has the advantages that the water pumping rate of the drainage pump can be accurately adjusted and controlled through the PID algorithm, the water level dynamic balance of the water collecting well is achieved, and the risk that a plant is flooded is reduced.