20results about How to "Large section" patented technology

The invention discloses an application for reducing a conductor skin effect based on an electron deep protective agent, and relates to the technical field of current distribution regulation. Through real-time monitoring and self-adaptive regulation, current density is transited to a deep position layer by layer, a surface layer concentration phenomenon is remarkably reduced, dynamic response can be realized in a frequency change environment, and the current density is reduced. Meanwhile, an electron deep protection layer is introduced, current distribution can be stabilized and direct impact of frequency fluctuation can be relieved in a high-frequency environment, the anti-loss capability of the surface layer of the conductor is improved, the overall stability of the conductor is enhanced, the service life of equipment is prolonged, in addition, a closed-loop feedback control mechanism is adopted, and the service life of the equipment is prolonged. The adaptive filter monitors the current concentration condition in real time and automatically adjusts the current distribution, so that the current density always tends to a uniform and smooth transition state, the smoothness and stability of the current distribution are improved, and transient loss caused by current concentration under frequency fluctuation can be reduced.

The utility model discloses an opposite-pulling asymmetric double-arch large-span stadium roof structure which comprises a front inclined giant arch and a rear inclined giant arch, and the front inclined giant arch and the rear inclined giant arch are connected through a plurality of opposite-pulling trusses to form a self-balancing system. The two ends of the rear inclined huge arch are supported by crotch-shaped arch foot columns, and the part between the two ends is supported by a plurality of V-shaped inclined columns arranged on the stand structure; only the two ends of the front inclined huge arch are connected with the crotch-shaped arch foot columns, and the front inclined huge arch is not connected with the stand structure. The large-span stadium roof overcomes the defects of an existing large-span stadium roof, and solves the problems that an existing stadium roof structural component is large in size, a building is heavy, the space sense and the light sense of the building cannot be highlighted, natural lighting cannot be achieved, and energy consumption is high.

The utility model discloses a ventilation structure and an electronic atomization device thereof. The ventilation structure comprises an air inlet channel formed in a support assembly and a self-closing ventilation valve set arranged in the air inlet channel. The two ends of the air inlet channel are communicated with the atomization cavity and the liquid storage cup respectively, the self-closing ventilation valve set is arranged in the air inlet channel, the self-closing ventilation valve set can open the air inlet channel when the negative pressure in the liquid storage cup is smaller than a preset value, and during ventilation, consumption of atomized liquid in the liquid storage cup is reduced due to work, so that the pressure in the liquid storage cup is reduced, and the atomization effect is improved. The self-closing scavenging air valve group is pushed open by atmospheric pressure, so that air enters the liquid storage cup, the self-closing scavenging air valve group is closed when the pressure reaches balance after the air enters the liquid storage cup, the scavenging air channel achieves scavenging in the shortest distance, the section of the scavenging air channel can be made to be large, the scavenging sensitivity is high, and timely scavenging is guaranteed. Therefore, the defects of drying or pasting of the ceramic core and the like are avoided.

The present invention provides an LED light strip and a lamp, wherein the LED light strip comprises a widthwise extension portion, wherein two end faces of the widthwise extension portion along the thickness extension direction respectively form a first end face and a second end face; a fin structure is arranged on the first end face, wherein the fin structure is integrally formed or fastened to the widthwise extension portion; a plurality of fin structures are arranged along the width extension direction of the widthwise extension portion; the plurality of fin structures comprise at least two mounting fins, wherein the space between two adjacent mounting fins constitutes a first mounting space; a mounting groove is arranged on the second end face, wherein the inner space of the mounting groove forms a second mounting space. The heat generated by the LED lamp will be thermally conducted to the LED light strip, and the present invention increases the heat dissipation area between the LED light strip and the air by arranging the fin structure on the LED light strip, thereby improving the heat dissipation efficiency of the LED lamp in the heat conduction mode and increasing the service life of the lamp.

The invention relates to the technical field of cables, in particular to a large-section low-loss molded wire aluminum split conductor which comprises four fan-shaped strand blocks and a center line. According to the large-section low-loss molded wire aluminum split conductor, the four-split design is adopted, the production efficiency is greatly improved, each strand block adopts the aluminum molded wires, the filling coefficient is higher, the conductor with the larger section can be obtained by increasing the sector width and the sector height of each trapezoidal monofilament, the conductor is not limited by the number of the monofilaments, and the production efficiency is improved. The situation that more strand blocks are needed to obtain a larger cross section like a compact circular shape, and a single strand block is limited by the number of monofilaments is avoided; the filling coefficient of the compressed molded line is far larger than that of a compressed circular molded line, the water blocking performance of the molded line is higher, strand blocks are separated by the insulating water blocking strips, the effects of water blocking and eddy current segmentation can be achieved, the skin effect and proximity effect loss can be reduced, and optical fibers in the insulating water blocking strips can monitor the operating temperature of a conductor and improve the operating safety.

The invention provides a stepped descending plate connecting structure and a manufacturing method, and belongs to the technical field of drainage structures in buildings. A structural main beam and a structural secondary beam are arranged below a peripheral wall body of the toilet, a PEC beam is arranged below the structural main beam, and the surfaces, facing the inner side of the toilet, of the structural main beam and the structural secondary beam are each provided with a step-shaped descending plate connecting structure which comprises a first step surface, a second step surface and a third step surface which are integrally formed. The structural bottom plate is connected between the structural main beam and the structural secondary beam to form a first step surface; a second step face is arranged between the first step face and the outer closed wall body, and a third step face is formed by the portion, over the PEC beam, of the structural main beam.

The utility model relates to a kind of energy dissipation reinforcing assembly for RC frame column, comprising: prefabricated ECC plate, for being attached to the surface of structural column and being fixed with structural column;Energy dissipation piece, for being fixed on floor and being resisted with prefabricated ECC plate, suitable for when structural column vibration makes prefabricated ECC plate and energy dissipation piece relative movement, and make prefabricated ECC plate deformation, by the friction between prefabricated ECC plate and energy dissipation piece and the deformation energy dissipation of prefabricated ECC plate.This application plays the role of increasing the section of column by prefabricated ECC plate, realizes the reinforcement of structural column, and it is convenient to construct and low in cost;When structural column is vibrated, it drives prefabricated ECC plate to move relative to energy dissipation piece, utilizes the friction energy dissipation between prefabricated ECC plate and energy dissipation piece, structural column deformation makes prefabricated ECC plate itself deform, by the deformation energy dissipation of prefabricated ECC plate, the function of two-stage energy dissipation is realized, to effectively improve structural damping energy dissipation performance, improve structural seismic bearing capacity.