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71results about How to "Good pressure resistance" patented technology

High-voltage-resistant silicon carbide device and preparation method thereof

The invention discloses a high-voltage-resistant silicon carbide device and a preparation method thereof, the high-voltage-resistant silicon carbide device comprises a silicon carbide substrate, a silicon carbide epitaxial layer arranged on the silicon carbide substrate and a drain metal electrode arranged on the back surface of the silicon carbide substrate, and a blocking injection region and a source injection region are sequentially arranged on the silicon carbide epitaxial layer; a plurality of first grooves and second grooves are etched in the silicon carbide epitaxial layer; a gate protection region is arranged at the bottom of the first groove, an oxide layer grows on the surface of the first groove, a gate polycrystalline silicon electrode is arranged on the oxide layer, and an insulating layer covers the gate polycrystalline silicon electrode; the bottom of the second groove is provided with a voltage-withstanding injection region, and the second groove is provided with a polycrystalline silicon filler. And the source electrode injection region and the insulating layer are covered with a source electrode metal electrode, so that the problems of low reverse voltage and complex process in the prior art are solved.
Owner:成都功成半导体有限公司

Connecting assembly of assembly type component

The invention provides a connecting assembly of an assembly type component, and relates to the field of component connection. The connecting assembly of the assembly type component comprises two C-shaped groove pieces and an I-shaped connecting piece, the C-shaped groove pieces are provided with component connecting parts used for being fixedly connected with the component, the I-shaped connectingpiece comprises a web in the middle and two side flanges, groove openings of the C-shaped groove pieces are in clearance fit with the web, the side flanges are used for being in stop fit with the inward-turned edges of the C-shaped groove pieces when the I-shaped connecting piece is inserted into the C-shaped groove pieces, wedge-shaped structures are further arranged on the C-shaped groove pieces and/or the I-shaped connecting piece, and the wedge-shaped structures are provided with wedge-shaped surfaces used for guiding the two C-shaped groove pieces to be fastened oppositely. The I-shapedconnecting piece gradually goes deep into the two C-shaped groove pieces, and the wedge-shaped surfaces of the wedge-shaped structures convert longitudinal movement into opposite fastening force on the two C-shaped groove pieces, so that the two components form fastening connection; and a plurality of bolts are replaced by the complete I-shaped connecting piece, so that the high-strength connecting requirement is met, the operation is simplified, and the construction efficiency is improved.
Owner:GUANGZHOU METRO DESIGN & RES INST

Intelligent cable

The invention belongs to the cable technical field and relates to an intelligent cable. The intelligent cable comprises a wire core; the periphery of the wire core is sleeved with a mica tape layer; the exterior of the mica tape layer is provided with a polytetrafluoroethylene layer; the outer side of the polytetrafluoroethylene layer is provided with a protective layer; a heat exchange metal layer is arranged between the protective layer and the polytetrafluoroethylene layer; a heat dissipation compressive structure is arranged between the heat exchange metal layer and the protective layer; the heat dissipation compressive structure comprises an inner annular compressive frame and an outer annular compressive frame; a plurality of supporting bars which are arranged axially and distributed annularly are arranged between the inner annular compressive frame and the outer annular compressive frame; and a cavity is formed among any two connected supporting bars, the inner annular compressive frame and the outer annular compressive frame. Compared with the prior art, the intelligent cable has the advantages of reasonable design, excellent compressive performance, high heat dissipation performance, intellectualization, high security, high reliability, firm structure and long service life, and can assist in preventing people from approaching the cable when the people are unaware of the cable.
Owner:湖州汇讯通讯科技有限公司

Petroleum exploitation drill bit

The invention discloses a petroleum exploitation drill bit which comprises a connecting plate, a drill bit body, a left guide column and a right guide column. A through hole is formed in the center ofthe connecting plate, a connecting rod penetrates the through hole, the lower end of the connecting rod is connected with the drill bit body, bolt holes are formed in two ends of the connecting plate, the connecting plate can be connected with drill rigs, compression-resistant plates are fixedly mounted on the lower end surface of the connecting plate, an anti-vibration spring sleeves the connecting rod and is arranged between the compression-resistant plates and the upper end surface of the drill bit body, and the left guide column and the right guide column are arranged on two sides of theconnecting rod and are arranged between the compression-resistant plates and the upper end surface of the drill bit body. The petroleum exploitation drill bit has the advantages that the petroleum exploitation drill bit is novel in structural design and has excellent compression-resistant, abrasion-resistant and anti-vibration functions, deformation abrasion phenomena of the drill bit body can beeffectively prevented, the service life of the petroleum exploitation drill bit can be prolonged, and the petroleum exploitation efficiency can be improved.
Owner:SHENGLI OIL FIELD WANHE OIL CONSTR TECHN LIMITED LIABILITY

Plateau-type fuse

The present invention relates to a plateau-type fuse. The plateau-type fuse comprises an insulator body, a fuse cylinder, an insulation cylinder, a lower electrode fixing ring, an upper electrode and a seal module. The insulator body is a diameter-variable tubular structure, at least five annular umbrella skirts are arranged at the outer peripheral surface of the insulator body, a through hole is arranged at the outer peripheral surface of a position where the insulator body being close to a lower port, the fuse cylinder is arranged at the internal portion of the insulator body, and the insulator cylinder is sleeved at the upper end of the fuse cylinder; the lower electrode fixing ring is fixedly sleeved at the periphery of a contact metal arranged at the lower portion of the fuse cylinder and is clamped at the inner wall of the insulator body; the contact metal arranged at the lower portion of the fuse cylinder is connected with a lower cable in the through hole; the upper electrode is installed at the upper end of the internal portion of the insulator body and is in contact with the fuse cylinder tube cap of the fuse cylinder; and the upper electrode is connected with an upper cable, and the seal module is installed at the internal portion of the lower port of the insulator body. The plateau-type fuse is good in pressure-resistant performance and can be used in the plateau environment.
Owner:北京索弗电气科技有限公司

High-energy-density strontium bismuth titanate based composite ceramic and preparation method thereof

The invention discloses a high-energy-density strontium bismuth titanate based composite ceramic and a preparation method thereof. Constituents of the high-energy-density strontium bismuth titanate based composite ceramic are expressed by a general formula (1-x-y)Sr(1-1.5)z(Bi0.8La0.2)zTiO(3-x)(Bi0.5Na0.5)(1-m)MgmTiO(3-y)Bi0.5Li0.5(Ti0.92Mn0.08)O3, wherein x, y, z and m represent molar fractions; x is greater than or equal to 0.2 and less than or equal to 0.7; y is greater than or equal to 0.01 and less than or equal to 0.2; z is greater than or equal to 0.05 and less than or equal to 0.3; m is greater than or equal to 0.02 and less than or equal to 0.2. The high-energy-density strontium bismuth titanate based composite ceramic is prepared by adjusting the constituents to form a composite composition, and adopting microwave sintering to form a dense structure with uniform and small crystal grains, so as to keep a high dielectric constant and obtain a high withstand voltage. The preparation method disclosed by the invention is simple and stable in preparation process and suitable for industrial popularization and application. The high-energy-density composite ceramic dielectric material is excellent in energy storage characteristic and energy storage efficiency; the stored energy density can be up to 1.9 J / cm<3>; the energy storage efficiency can be up to 65%; the high-energy-density composite ceramic dielectric material is environment-friendly, low in loss and good in practicability.
Owner:GUILIN UNIV OF ELECTRONIC TECH

Pressureproof water pump with anti-deformation shell

The invention relates to the technical field of water pumps, in particular to a pressureproof water pump with an anti-deformation shell. The pressureproof water pump comprises a water pump body. The water pump body comprises a pump shell. A pump spindle is arranged in the pump shell. A pump spindle rotor set is arranged on the upper portion of the pump spindle. A motor stator set is arranged outside the pump spindle rotor set and mounted on the upper portion of the inner wall of the pump shell. An impeller is arranged at the bottom of the pump spindle. A water outlet is formed in the lower portion of the left side of the pump shell. A water inlet is formed in the middle of the bottom face of the pump shell. Supporting legs are arranged on the bottom face of the pump shell. A plurality of rotary force unloading toroid shells are arranged on the pump shell. A damping base is mounted at the bottom end of the pump shell. The pressureproof water pump is convenient to use, can bear large pressure and good in pressure resistance and not prone to being deformed; force unloading faces can be formed through the rotary force unloading toroid shells conveniently when flow pressures in different direction are applied to the water pump, the pressure resistance of the pump body is improved, the effect that the pump body is not reshaped or deformed is ensured, thus, the pump body works normally, the service life of the pump body is prolonged, and maintenance of the pump body is reduced.
Owner:漯河市四通泵业有限公司
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