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55 results about "Availability factor" patented technology

The availability factor of a power plant is the amount of time that it is able to produce electricity over a certain period, divided by the amount of the time in the period. Occasions where only partial capacity is available may or may not be deducted. Where they are deducted, the metric is titled equivalent availability factor (EAF). The availability factor should not be confused with the capacity factor. The capacity factor for a given period can never exceed the availability factor for the same period. The difference arises when the plant is run at less than full capacity, in which case the capacity factor is less than the availability factor.

Method for protecting direct current line transient short-circuit fault of modular multiple-level converter

The invention relates to a method for protecting a direct current line transient short-circuit fault of a modular multiple-level converter, belonging to the technical field of direct current transmission. A group of two-way thyristor switch is connected on alternating current ports of each power unit of the modular multiple-level converter in parallel, when a direct current line has a transient short-circuit fault, control pulses of all of the power units are closed, and all of the two-way thyristor switches are triggered to be switched on at the same time, so that the short-circuit point of the direct current line is in natural arc extinction and disappears. When short-circuit current of the direct current line is detected to be zero, all of the two-way thyristor switches are controlled to be switched off, and the control pulses of all of the power units are opened, so that the converter runs again. With the adoption of the method, a switch device of the converter can be quickly protected from damage during a failure, and the direct current short-circuit point is in the natural arc extinction after failure, therefore, the device can automatically run again, thereby avoiding the complete off-stream of the device and greatly improving the reliability and the availability factor of the device.
Owner:ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1

Secondary equipment intelligence state evaluation diagnostic system and method thereof

The invention relates to secondary equipment, and in particular relates to a secondary equipment intelligence state evaluation diagnostic system and a method of the system. The secondary equipment intelligence state evaluation diagnostic system is specially characterized by comprising a system management module, a standard management module, an evaluation rule management module, a record management module, a data collection module, an evaluation management module, a statistical query module, an equipment state detecting and pre-warning module and a risk evaluation module. The secondary equipment intelligence state evaluation diagnostic system disclosed by the invention has the beneficial effects that the secondary equipment intelligence state evaluation diagnostic system firstly can reduce the outage time of the equipment, increases the reliability and availability factor of the equipment, reduces the recondition expense of the equipment, improves the operation performance of the equipment and increases the economical benefit. The secondary equipment intelligence state evaluation diagnostic system further can enhance cooperation between the operation department and the overhaul department, cancels unnecessary procedures, saves the management cost, reduces the operation and maintenance cost, and can quickly take recondition measures to eliminate failures of the equipment, thereby providing necessary technical conditions for promotion of large operation and overhauling.
Owner:STATE GRID SHANDONG ELECTRIC POWER +1

Heating process of low-temperature flue gas with wetting flue gas desulphurization

The invention relates to a heating process of low-temperature flue gas with wetting flue gas desulphurization; an adsorption tower is directly connected with a chimney by a pipeline, and a hot secondary air pipe of a boiler air preheater, which is used for heating low-temperature flue gas at the outlet of an absorption tower, is connected on the pipeline for connecting the absorption tower and the chimney. In the invention, GGH (Gas GasHeater) is removed to thoroughly solve the problems that the heating effect is poor, the desulphurization performance is unstable, availability factor is low and the operation is dis-economic owning to GGH scaling and blocking, so as to reduce the service-power consumption rate of a desulphurization system; in addition, the invention has flexible adjustability, can heat the low-temperature flue gas at the outlet of the absorption tower of the desulphurization device to the temperature needed by safe discharge by pumping secondary wind along with the change of the boiler load; the desulphurization flue gas temperature can be heated to above dew-point temperature of the glue gas according to the safety of the chimney, so as to avoid special anticorrosion renovation to the chimney; furthermore, the desulphurized flue gas lifting and diffusion effect is improved.
Owner:XIAN THERMAL POWER RES INST CO LTD

Composite inhaul cable with totally-closed carbon fiber wires and high-strength steel wire

The invention relates to a novel cable body structure of a composite inhaul cable with totally-closed carbon fiber wires and a high-strength steel wire, which is mainly used for inhaul cables in large-span structures such as cable rope bearing bridges and cable-strut tension structures. A high-strength steel wire (1) of the composite inhaul cable is positioned at the core part of the composite inhaul cable; an inner-layer polyester fiber high-strength wrapping tape (2) winds around the high-strength steel wire (1); Z-shaped carbon fiber wires (3) of which the outer parts are occlusive mutually wrap the inner-layer polyester fiber high-strength wrapping tape (2); an outer-layer polyester fiber high-strength wrapping tape (4) winds outside the Z-shaped carbon fiber wires (3) of which the outer parts are occlusive mutually; and a peripheral high-density polyethylene sheath (5) wraps the outer-layer polyester fiber high-strength wrapping tape (4). The novel cable body structure can ensure that a totally-closed carbon fiber wire layer can still prevent harmful substances such as water and gas from entering the steel wire cable body of which the core part zinc-coated wire when plastic sheaths of the inhaul cable are damaged unexpectedly or cracks with aging after the plastic sheaths are used for years, and can reduce the dead weight of the cable body and improve the availability factor of the inhaul cable.
Owner:SOUTHEAST UNIV

Vacuum casting appts.

To provide a vacuum melting and casting apparatus, which can improve its availability factor by making the apparatus compact and by increasing the number of cycles of melting and casting, and further can cope with a variety of requirements by selecting each process of melting, casting, and collecting of castings among a plurality of processes. The apparatus is divided into a melting chamber 1, a casting chamber 2, and a collecting camber 3, and the volumes of the respective chambers are reduced. The melting chamber 1 and the casting chamber 2 are connected via a first closed passage 13 having a first gate valve 12, which can be vacuum-sealed even when a degree of vacuum in any chamber is high. A flap valve 99, which opens and closes the end portion of the downstream side of a second closed passage 23 in the collecting chamber 3, is provided between the casting chamber 2 and the collecting chamber 3. When the molten metal is to be poured, the opened first gate valve 12 and the first closed passage 13 are advanced, and the molten metal is poured from a melting furnace 11 of the melting chamber 1 into a rectangular pipe shape rounder 41 provided to pour the molten metal to a tundish 61 of the casting chamber 2. When the molten metal is not to be poured, the first gate valve 12 and the first closed passage 13 are retracted, and then the first gate valve 12 is closed. (C)2004,JPO.
Owner:ULVAC INC

Hydrolyzation post-processing technique during preparation of glyphosate through glycin method

The invention relates to a hydrolyzation post-processing technique during preparation of glyphosate through a glycin method, which includes the steps of implementing reduced pressure distillation andseparation to a hydrolyzation liquor under the temperature between 80 and 110 DEG C and the pressure equal to or less than 0.05MPa after the condensation reaction and hydrolysis reaction for preparingglyphosate through the glycin method are finished, depickling and then crystallizing to obtain the glyphosate products. The hydrolyzation post-processing technique during preparation of glyphosate through the glycin method recovers hydrochloric acid by reducing the pressure, which can lead the recovery rate of hydrochloric acid to be more than 4 percent; and hot water is added for crystallizing after the hydrochloric acid is removed, thus effectively improving the availability factor of a crystallization kettle; and meanwhile, as no caustic soda liquor is added during hydrolyzation, the totalamount of a mother liquor and the content of sodium chloride are reduced as well, the energy consumption for recovering triethylamine through rectifying the mother liquor is reduced, and the total yield of the finally obtained solid glyphosate reaches 73-75 percent.
Owner:SICHUAN LESHAN FUHUA TONGDA AGRO-CHEM TECH CO LTD

Device and method for performing remote medical treatment

The invention provides a device and a method for performing remote medical treatment. The device comprises a first reading and processing unit, a second reading and processing unit, a third reading and processing unit and a remote medical treatment server, wherein the first reading and processing unit is used for reading one of or more items of identification information from an identification information carrying object, generating and sending an identification information verification request, and starting a remote medical treatment logic after the verification is passed; the second reading and processing unit is used for reading and sending local medical file and examination information of a patient, accessing and receiving remote medical treatment file information; the third reading and processing unit is used for reading the medical treatment information and sending the medical treatment information to the remote medical treatment server; and the remote medical treatment server is used for receiving the medical treatment information through a network, saving identification information and medical treatment information which are reserved by an identification information object, processing request information and responding to the request information. Due to the adoption of the technology of the device and the method for performing the remote medical treatment, credible remote medical treatment can be realized without dependence on conventional medical institutions, unbalance medical treatment resource allocation is made up, the availability factor of the resource is improved, and the problem of difficulty and high cost of medical treatment is solved.
Owner:田小平

Improved combination structure and combining method of baseplate and heat dissipating structure

The invention discloses an improved combination structure and a combining method of a baseplate and a heat dissipating structure. The method comprises the following steps of: (a) providing the baseplate; (b) respectively forming a first metal layer and a second metal layer on the top surface and the bottom surface of the baseplate in a vacuum evaporation coating method; and (3) leading the heat dissipating structure to be combined on the second metal layer of the bottom surface of the baseplate by means of combination. According to the improved combination structure of the baseplate and the heat dissipating structure obtained by using the combining method, a heat source conductive interface of a ceramic baseplate or an aluminium baseplate can be converted into a metal interface with better heat transfer property through a high polymer adhesive by adopting a vacuum coating method, thereby the whole heat transfer coefficient is substantially increased, and the unweldable characteristic of the kind of baseplates is solved; and due to the increasing of thermal conductivity, the service life of the LED (Light-Emitting Diode) grain packaging is prolonged and the availability factor of the LED grain packaging is improved.
Owner:PARAGON TECH
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