7results about How to "Protect safe operation" patented technology

This utility model discloses an elevator water-blocking device with a water-blocking function, including a water-blocking gate, a servo motor, a reel, and a lifting steel wire. The servo motor and the reel are located above the sill of the elevator hall door. The lifting steel wire connects the water-blocking gate and the reel. The servo motor controls the rotation of the reel and the lifting steel wire, causing the water-blocking gate to be transported to the sill of the elevator hall door for storage or to the floor of the hall door for water blocking. An elevator system incorporating this water-blocking device is also disclosed. This utility model features a concealed and aesthetically pleasing design, is easy to install, and provides active and efficient water-blocking sealing. It forms a physical watertight barrier, effectively preventing external floodwater from flowing into underground spaces, protecting underground equipment from water damage, and is suitable for various newly built or existing locations.

The invention discloses a PLC control method and system based on double-shaft coupling. The method aims at improving the precision, stability and synchronism of double-axis motion control. The method comprises the steps of setting initial parameters of double-axis motion when a PLC system is started, and establishing a coupling relationship between double axes; generating a double-axis motion instruction according to a production task requirement; and the motion instruction is converted into a control signal, the double-shaft motor is driven to move, and coupling parameters are adjusted in real time to maintain synchronization. In addition, the method can monitor faults in the double-shaft movement process in real time, and once the faults are detected, double-shaft movement is stopped immediately, an alarm signal is sent out, and fault information is recorded. The method is realized through the PLC, has the characteristics of high-precision synchronization, high adaptability, fault protection, low cost and easiness in operation and maintenance, and is suitable for various complex production tasks.

A stable mopping cable fixing frame is characterized by comprising a supporting block, a mounting frame, a supporting rod and a fixing assembly, the mounting frame is fixed to the upper portion of the supporting block and used for placing a cable, the upper end of the supporting rod is hinged to the supporting block, the lower end of the supporting rod is hinged to a bottom plate, and the fixing assembly comprises a limiting rod, a second threaded rod, a limiting block and an abutting block; the limiting rod is in a hollow cylinder shape, the bottom is a pointed cone, a second opening allowing the abutting block to penetrate is formed in the outer surface, a sliding groove is formed in the side face of the limiting block, a screw hole matched with the second threaded rod is formed in the center of the limiting block, one side of the abutting block is slidably connected with the inner wall of the sliding groove, and a hole allowing the second threaded rod to penetrate is formed in the bottom plate. The cable rack has the advantages that the abutting block is in close contact with the ground, the unfolded abutting block goes deep into the ground like an anchor fluke, friction force and road holding force between the abutting block and the soil are increased, stability of the cable rack is guaranteed, and safe operation of a mopping cable is protected.

The present application relates to a kind of for oil and gas well superhigh pressure multiphase fluid gas sampling analysis method and system.The system is composed of manual needle valve, stop valve, displacement tank, high pressure displacement metering pump, condensing dryer, catalytic oxidizer and gas chromatograph etc..Based on the pressure difference before and after the choke manifold, the system can realize the spontaneous flow of lateral line flow, without external power, and the high pressure displacement metering pump in the process of acquisition will be redundant sample back injection oil and gas main pipeline, realize resource recovery and zero emission;Adopt the design of displacement tank pressure reduction flash evaporation can efficiently release dissolved gas, improve sampling accuracy;Integrating multi-node pressure sensor real-time monitoring pipeline leakage and filter blockage, guarantee the safe operation of chromatograph;Nitrogen purge residual sample gas is converted into CO2 And H2O by catalytic oxidizer, realize safe emission.The method is through " pressure difference drive-flash evaporation-gas release-closed loop injection " process, realize the gas sampling in superhigh pressure multiphase fluid, widely applicable to the sampling needs of deepwater oil and gas well, shale gas and other multiphase fluid.

The utility model belongs to the technical field of heat insulation pad, especially is a kind of heat insulation pad for battery pack, including heat insulation pad body, the heat insulation pad body includes heat insulation layer, fire -retardant layer and buffer layer are sequentially arranged on the upside and downside of heat insulation layer, the outside of buffer layer and fire -retardant layer is all attached with heat conducting layer, the buffer layer is silica gel bubble cotton material, the heat insulation layer is composed of aerogel material, the heat conducting layer is metal foil material, the fire -retardant layer is formed by the interweaving of aerogel felt material and fire -retardant bubble cotton material.The utility model has excellent mechanical strength and electric insulation by heat insulation pad body, can bear certain pressure and impact, protect the safe operation of battery and other electrical equipment;Through heat insulation layer, fire -retardant layer, buffer layer and heat conducting layer, the performance of heat insulation pad body can be enhanced, and service life is improved.

This utility model relates to a reconfigurable structure for a bypass hydraulic control module, comprising: a hydraulic control module, a cooling device, an oil tank, an unpressurized return oil pipe, and a pressurized return oil pipe; the hydraulic control module includes a proportional valve and a safety valve, the inlets of which are connected to the oil tank via a filter assembly, and the outlet of the proportional valve is connected to the inlet of the cooling device; the unpressurized return oil pipe connects the outlet of the safety valve to the oil tank; the pressurized return oil pipe connects the outlet of the cooling device to the oil tank. The beneficial effects of this utility model are: the oil exiting the proportional valve has hydraulic pressure, improving the cooling effect; simultaneously, an overpressure valve is connected between the inlet and outlet of the cooling device, allowing the oil to return to the oil tank from the overpressure valve when the oil pressure is too high, protecting the safe operation of the cooling device; the reserved ports of the hydraulic control module are readily available, allowing the cooling device to connect to these reserved ports, minimizing modification costs while achieving the cooling purpose.