10results about How to "Small section" patented technology

The invention relates to the technical field of submerged arc furnaces, and discloses a large energy-saving direct-current submerged arc furnace which comprises a bottom plate and a fixing frame arranged on the bottom plate. According to the large energy-saving direct-current submerged arc furnace, the particle size of ore is controlled through extrusion and crushing, materials are automatically stricken by a strickling plate, a conical rod rotates and guides, the particle size is screened according to intervals, and ferromagnetic impurities are removed through a magnetic attraction belt; the electrode and furnace lining loss is reduced; inert gas is introduced into an airflow plate of a heating furnace to strengthen stirring of a molten pool and promote full contact of effective components and a fluxing agent, a full-direct-current framework is adopted to eliminate alternating loss, a double-inverse-star-shaped non-in-phase inverse parallel topology is matched, and mutual counteraction of current and a magnetic field is utilized, so that the material with the particle size exceeding the standard is obtained. Copper pipe hysteresis and eddy current loss are reduced, the operating temperature is controlled, the topological multi-pulse rectification optimizes the current waveform, the reactive power is reduced, and a high-capacity reactive power compensation device is omitted; and meanwhile, the length of the short net is shortened, the conductor section is optimized, an additional heat dissipation pipeline is not needed, and energy consumption and investment are reduced.

The utility model discloses a shield door bearing driving device which comprises a door machine beam and a guide rail, the door machine beam is formed by splicing a lintel beam and a middle beam, supporting feet used for being connected with stand columns are arranged at the two ends of the lintel beam and the two ends of the middle beam, and the guide rail is connected with the side wall of the door machine beam. In the utility model, the door machine beam and the guide rail adopt a splicing structure, the weight of each single body is reduced, the installation is easy, the length of each single body of the door machine beam is reduced to half of the initial length or even less, the section of the guide rail is reduced, and the transportation is convenient.

The invention relates to the field of building structures, in particular to a spoke type single-layer rigid reticulated shell structure which comprises an inner ring beam, an outer ring beam and a plurality of inner ring beams. The outer ring beam is of a plane structure, and the plane where the outer ring beam and the plane where the inner ring beam are located are not coplanar; the web members are arranged between the inner ring beam and the outer ring beam and used for connecting and supporting the inner ring beam and the outer ring beam which are not coplanar. The inner ring beam and the outer ring beam which are not coplanar and the web members jointly form a reasonable spatial curved surface form, the overall structure is in a three-dimensional stress characteristic, an internal force self-balancing system is formed, only vertical force is transmitted to a lower supporting structure, and the bending moment effect is not generated. Compared with an existing frame and truss structure, the structure height of the support is smaller, the section of the lower supporting structure is smaller, and the structure is light, attractive and economical and applicable; compared with an existing spoke type tensioning structure, the tensioning structure is large in rigidity, small in deformation, easy and convenient to design and construct and higher in adaptability to a building envelope. The invention can be used for building roof structures.

The embodiment of the present application provides a composite structure for building reinforcement, which comprises a plate-shaped composite structure, wherein the plate-shaped composite structure is fixedly attached to the surface of a building and comprises a first fiber layer, a metal layer and a second fiber layer from the surface of the building outward in sequence; the plate-shaped composite structure has flexibility and changes with the shape of the surface of the building after being fixed to the surface of the building. The plate-shaped composite structure in the composite structure has the characteristics of low cross-sectional height, large unfolding area and stress dispersion, and has the advantages of good adhesion after being fully glued to the interface of the building, can effectively provide support, can provide rapid reinforcement and increase the bearing capacity for the building with small construction space, and is especially suitable for the installation of internal small-limit buildings and tunnels. The composite structure can very effectively, flexibly and quickly provide a new reliable option for the constructor, and realizes the life extension of the reinforced building.

The application provides a charging socket, and relates to the technical field of charging accessories. The charging socket comprises at least two power terminals, the power terminals are provided with connecting end faces, at least two connecting assemblies, the two connecting assemblies are connected with the connecting end faces of the two power terminals in one-to-one correspondence, and at least four conductive pieces, at least one power terminal is connected with at least two conductive pieces through the connecting assembly. The application connects a single power terminal with multiple conductive pieces (such as at least two conductive pieces) through the connecting assembly, so that the charging power is increased. Compared with the method of increasing the charging power by using a single large-section wire, since the increased power and total current-carrying capacity remain unchanged, the single large-section wire is replaced by multiple conductive pieces, so that the cross-sectional area of each conductive piece is smaller than that of the single wire, the conductive piece with a small cross section is easier to prepare, and the cross section is smaller, so the conductive piece is easier to bend and wire, and assembly is facilitated.

The application discloses a centrifugal fan air outlet structure, a fan applying the same and a combined fan, and belongs to the technical field of centrifugal fans. The centrifugal fan air outlet structure comprises an outer shell plate, an air outlet and an air inlet. The air inlet is arranged on one side wall of the outer shell plate. The other side of the outer shell plate is open to form an opening. The air outlet is arranged on one end of the outer shell plate. The centrifugal fan air outlet structure further comprises a wind guide part. The wind guide part is arranged on the upper edge of the outer shell plate connected with the air outlet. When viewed along the air outlet direction of the air outlet, the included angle between the inner side of the wind guide part facing the inner cavity and the horizontal plane is B, and 0° < B ≤ 15°. The flow rate difference of the air inlet is adjusted through the inclination angle of the wind guide part, so that the airflow turbulence at the outlet is reduced, the noise of the fan is reduced, and low-pressure surge is eliminated.

The utility model discloses a flue type waste heat boiler which comprises a swirler, a steam generator, a membrane type economizer and a hyperbolic ash bucket which are sequentially connected in the vertical direction. The swirler is provided with an air inlet pipe seat which is tangentially arranged, so that the flowing track of high-temperature furnace gas is converted into spiral rotation from top to bottom, and the high-temperature furnace gas sequentially enters the steam generator and the membrane type economizer to be subjected to dividing wall heat transfer and then is discharged; technologies such as tangential air inlet, intensified heat transfer inside and outside a heating surface, a transition annular header, cold and hot state automatic positioning, a fin serpentine tube bundle and a hyperbolic ash bucket are adopted, and the explosion-proof function is achieved; the product replaces a membrane tube water cooling wall which is continuously used by a waste heat boiler in the prior art, so that the steam generator can be integrally arranged in a flue, the heat of furnace gas is completely absorbed, the section of the flue is smaller, and the flow velocity of flue gas is improved; and the steam yield is more than one time of that of a waste heat boiler with the same capacity in the prior art.

The application provides a high-temperature interference-resistant manganese-zinc ferrite magnetic ring applied to the field of magnetic rings, and through the cooperation between the heat exchange bin and the sheath, when the temperature in the magnetic ring continuously rises, the heat expansion capsule expands and extrudes the heat dissipation column capsule, and then the pressure is transmitted to the annular channel, so that the heat dissipation liquid and the internal gas in the annular channel flow back to the heat exchange bin, the M-shaped spring sheet is extruded, the M-shaped spring sheet is extruded to press the air bin, the gas in the air bin is blown away to the surface of the heat dissipation ceramic sheet through the exhaust hole, when the temperature of the heat dissipation ceramic sheet decreases, the heat expansion capsule retracts, under the elastic force of the M-shaped spring sheet, the liquid bin is extruded and the heat dissipation liquid in the liquid bin is pushed back to the annular channel and the heat dissipation column capsule, and the circulation heat dissipation operation is carried out, so that the heat generated by the magnetic ring during operation is reduced, the phenomenon that the anti-electromagnetic interference ability of the magnetic ring is reduced due to the high temperature of the magnetic ring is avoided, the operation stability is improved, the market prospect is good, and the application is suitable for promotion and application.

The utility model discloses a kind of polyethylene cables, it is related to cable technical field, including cable core, the cable core is made of four annular distribution wire core stranding, the wire core is made of conductor and the insulating layer being set in the conductor outside, the interstice of the cable core is filled with epoxy resin glue, overlapping wrapping iron fluorine long composite fireproof belt outside cable core, iron fluorine long composite fireproof belt is extruded and covered with thermoplastic silicone rubber inner protective layer, the outside braiding of thermoplastic silicone rubber inner protective layer is by tinned copper braid, the outside wrapping of tinned copper braid is glass fibre rubber coated cloth, the outside of glass fibre rubber coated cloth is covered with high temperature resistant aluminium plastic composite belt, the outside overlapping wrapping of high temperature resistant aluminium plastic composite belt is high silica fibre fireproof belt, the extruded and covered with thermoplastic halogen-free low smoke flame-retardant polyolefin outer sheath of high silica fibre fireproof belt, the scheme solves the problem that polyolefin sheath power cable exists in high temperature resistance and flame retardant performance aspect deficiency, cannot work stably under high temperature environment.

This utility model discloses a coating replenishment device, relating to the technical field of coating and encapsulation equipment. It includes an operating table and a connecting line, with a thermistor fixedly connected to the bottom end of the connecting line. The thermistor is coated via a coating mechanism. By setting up a coating mechanism and adjusting the height of each coating tube opening to be consistent through processing and assembly precision, this utility model provides a uniformly high-height coating surface for multiple points due to the consistent height and shape of the naturally formed micro-convex surfaces after each liquid overflow. Furthermore, the naturally formed coating surface after each liquid overflow provides a coating surface with very high repeatability. Because the viscous coating liquid has a high surface tension, the coating tube cross-section is small, and the internal extrusion naturally repairs the micro-convex coating surface without the influence of external forces such as scrapers that introduce air, thus minimizing coating defects such as bubbles and dents, facilitating the coating of thermistors.