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103 results about "Pre delivery" patented technology

British Dictionary definitions for pre-delivery. delivery. noun plural-eries. the act of delivering or distributing goods, mail, etc; something that is delivered (as modifier) a delivery service; the act of giving birth to a child she had an easy delivery.

Ultrasonic testing method and ultrasonic testing system for internal defects of GIS epoxy insulator

The invention belongs to the technical field of power transmission and transformation insulation equipment, and relates to an ultrasonic testing method and an ultrasonic testing system for internal defects of a GIS epoxy insulator. The ultrasonic testing method for internal defects of the GIS epoxy insulator comprises the following steps: constructing the ultrasonic testing system for internal defects of the GIS epoxy insulator; testing a testing standard component based on the ultrasonic testing system, and obtaining a non-defective reflected wave waveform of the standard component; testing the GIS epoxy insulator based on the ultrasonic testing system, judging interior bubbles and cracks of the epoxy insulator by using a defect judgment method, and then continuously testing the GIS epoxy insulator along the moving path of a probe. The method is high in testing precision and efficiency and accurate in defect positioning, small-sized bubbles and cracks can be tested, and the method can be used for pre-delivery inspection of insulators and also can be used for assembling field test of insulators. The ultrasonic testing system for internal defects of the GIS epoxy insulator comprises an ultrasonic instrument, an oscilloscope, an ultrasonic longitudinal wave normal probe, a computer and the GIS epoxy insulator. The system is low in cost, small in equipment volume, high in testing precision and efficiency and accurate in defect positioning.
Owner:SOUTH CHINA UNIV OF TECH

Novel method used for recycling urban industrial sludge

The invention discloses a novel method used for recycling urban industrial sludge. The novel method comprises following steps: water content of urban industrial sludge obtained via sewage treatment plant mechanical dewatering is reduced to 50 to 65% using a drying device, wherein an independent heat source or gas waste heat is adopted by the drying device as a heat source; the dewatered sludge, an auxiliary material, and a certain amount of an additive are mixed at a certain ratio, wherein the above materials are delivered into corresponding feed hoppers, and automatic induction weighing machines arranged under the feed hoppers are used for realizing material automatic compounding measuring; an obtained mixture is delivered into a blender for stirring, is conveyed using a conveying belt, and is made into material balls via twisting; the material balls are delivered into a rotary kiln with a certain gradient for calcination, wherein with rotating of the rotary kiln, the material balls roll to a kiln head, 2mm bran is sprayed into the rotary kiln for combustion, and the material balls are transformed into ceramsite via calcination in the kiln; and at last the obtained ceramsite is subjected to drying, natural cooling, sieving and grading, and finished product pre-delivery inspection. The novel method possesses following advantages: waste sludge is changed into valuable things, sludge treatment mode is widened, and sludge is cheap, so that enterprise cost is reduced.
Owner:NINGBO PINGHAI BUILDING MATERIALS

Hybrid simulation physical simulating device for flexible continuous current convertor

PendingCN106707796ASolve factory test problemsRealize real-time simulation testingSimulator controlReal-time simulationAudio power amplifier
The invention relates to a hybrid simulation physical simulating device for a flexible continuous current convertor, belonging to the technical field of electrical automatic equipment. The hybrid simulation physical simulating device comprises a flexible continuous current convertor valve simulation device, an alternating current bus power amplifier and a direct current bus power amplifier. The digital and analog signal ends of the alternating current bus power amplifier are connected to an external power system real-time digital simulation platform and a tested flexible continuous-current convertor control and protection device; and the digital and analog signal ends of the direct current bus power amplifier are connected to the external power system real-time digital simulation platform and a tested flexible continuous-current convertor control and protection device. According to the hybrid simulation physical simulating device disclosed by the invention, the flexible continuous-current convertor control and protection device can directly enter a real-time simulation test and can be combined with an RTDS (real time digital system) and other power system real-time digital simulation platform for performing hybrid simulation, and the pre-delivery test problem of the flexible continuous-current convertor control and protection device is solved.
Owner:BEIJING SWTECH CONVERTING TECH CO LTD
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