45 results about "Fill power" patented technology

An insulation system for a fluid-filled power transformer that allows for operation of the transformer at higher temperatures and with lowered susceptibility to aging. The insulation system includes a plurality of fibers that are bound together by a solid binding agent. The solid binding agent may, for example, for sheaths around the fibers or may be in the form of dispersed particles that bind the fibers to each other. Also, a method of fabricating such an insulation system.

The present invention broadly comprises a power transmitting assembly for a vehicle, including a transmission power output for a manual transmission in the vehicle and a torque-filling element. The torque-filling element is arranged for connection to an engine in the vehicle, is connected to the transmission power output and is arranged to modify engine torque from the engine and to provide the modified engine torque to the transmission power output during a shift to a gear in the manual transmission. The torque-filling element includes a hydrodynamic torque-transmitting device, a rotation adjustment element to modify rotational speed associated with the engine, and a coupling element to interface the engine torque with torque on the transmission power output. In some aspects, the rotation adjustment element is arranged for connection to the engine. In some aspects, the coupling element is arranged for connection to the engine.

The invention provides a safety apparatus suitable to be associated to and a method for monitoring a liquid-filled power transformer wherein there is provided a sensing device associated to an electronic unit. The sensing device is suitable to be at least partially immersed into the liquid and comprises at least one movable part displaceable by movements of the liquid; the electronic unit detects signals indicative of the actual position of the movable part and is arranged to elaborate, based on the detected signals, data related to actual conditions of the transformer and / or of its cooling liquid.

The invention discloses a method for evaluating the efficiency of an oil-immersed power transformer cooler. The steps include: calculating the average load loss of the transformer to be evaluated in a specified time period, and adding the average load loss to the nameplate no-load loss to obtain the average total power loss; Calculate the average residual power of the transformer to be evaluated in the specified time period; assuming the efficiency of the cooler of the transformer to be evaluated, calculate the average cooling power of the cooler of the transformer to be evaluated in the specified time period, and subtract the average cooling power from the average total loss power Equal to the energy balance relationship of the average residual power, subtract the average residual power from the average total power loss and divide it by the average cooling power to calculate and reverse the cooler efficiency of the transformer to be evaluated. The invention can realize the calculation of the efficiency of the cooler to grasp the load capacity of the transformer to solve the problem of insufficient efficiency of the transformer cooler, is suitable for the transformer installed with the cooler, and can also provide a basis for estimating the temperature rise of the transformer top layer oil.

The invention provides a method for evaluating the insulation aging degree of an oil-immersed type power transformer. By comprehensive consideration for multiple aging parameters such as the operating temperature, the content of gas in oil, the content of furfural and the concentration of corrosive sulfide of the transformer, the accuracy of a discrimination result is guaranteed. The method mainly comprises the following steps: detecting the content of gas dissolved in the oil and calculating the polymerization degree; measuring the content of the furfural in the oil and calculating the polymerization degree; determining the operating temperature and calculating the polymerization degree; measuring the initial content of dodecanethiol and DBDS in the oil and calculating the influence and the action on the decreasing rate of the polymerization degree of insulation paper; weighting and calculating the polymerization degree calculated according to all aging characteristic quantities, thus obtaining the polymerization degree of the insulation paper, and evaluating the insulation-aging condition. The method provided by the invention has the advantages that the basic principle is simple, the operability is strong, and the problems of inaccuracy and limitation of aging evaluation by single characteristic parameter are effectively solved; multiple parameters are introduced for combined evaluation of the aging, so that the accuracy and the truth of the result are guaranteed, and the method has important practical application significance for evaluating the insulation aging and the service life of oiled paper.

The invention relates to an electronic type quick-action oil pressure relay device for oil-charge electrical devices. The relay device comprises an extension set (A) and an extension set (B). The extension set (A) is arranged at the site of an oil-charge electrical device and has an independent power source; and a pressure transducer is communicated with pipelines to an oil tank; the output electric signals of the power source are converted into optical signals through an optical fiber communication interface (1) and then output by optical fiber (3); the extension set (B) is a rear-end processor mounted far away from the oil-charge electrical device, and has an independent power source; an optical fiber communication interface (2) is communicated with the optical fiber communication interface (1) on the extension set (A) through the optical fiber (3), so as to convert the light signals into the electric signals and then input the electric signals into a CPU single chip microcomputer; the CPU single chip microcomputer stores the real-time acquired oil tank pressure data into a large-capacity storage unit, and accurately outputs alarm or protection signals of the switching value.

The invention discloses a simple testing method for filling power of bag type down feather. The simple testing method is characterized by after carrying out pretreatment on to-be-tested down feather, uniformly and flatly paving the down feather in a self sealing bag, exhausting air in the bag and sealing, testing the thickness at the moment through a thickness instrument, testing the thickness again after standing until the down feather gets fluffy, and calculating the filling power of the down feather through the thickness difference of twice testing. According to the simple testing method disclosed by the invention, testing can be completed just through the thickness instrument and the self sealing bag, the method is simple, the instrument is small in size, the carrying is convenient, the needed down feather amount is small, and the materials are saved.