5results about How to "Obvious structural advantages" patented technology

The utility model belongs to the technical field of water stop structures, and particularly relates to an LUUI closed type rubber water stop belt and a water stop structure used at the joint of a new building and an old building. The water stop belt comprises a double-U-shaped sealing belt, an L-shaped wing plate belt and an I-shaped wing plate belt. The double-U-shaped sealing belt is formed by oppositely buckling two U-shaped belts to form a sealed whole; the L-shaped wing plate belt and the I-shaped wing plate belt are fixed to the two opposite sides of the double-U-shaped closed belt respectively. The water stop structure comprises an L-shaped groove body formed in the side, close to a joint, of an original building, and an L-shaped wing plate strip is matched with the L-shaped groove body and fixed to the L-shaped groove body. The double-U-shaped sealing belt is arranged in a joint of an original building and a new building, and the width B of the double-U-shaped sealing belt is matched with the width of the joint. And the I-shaped wing plate strip is poured in a new building. The LUUI closed type rubber waterstop and the waterstop structure can adapt to telescopic displacement and uneven settlement difference between new and old building concrete, so that the waterstop does not lose efficacy due to overlarge settlement difference and vibration dislocation, and potential safety hazards caused by premature tearing failure are avoided.

This invention relates to a Ni-doped cobalt sulfide three-dimensional graphene anode material for sodium-ion batteries and its preparation method, belonging to the field of electrochemical energy storage. A NiCoCN precursor is obtained by grinding and mixing nickel nitrate, cobalt nitrate, and urea uniformly, followed by air annealing. The precursor is then mixed with a commercial graphene oxide solution, stirred, centrifuged, washed, and dried to obtain a NiCoCN / graphene oxide precursor. High-temperature sulfidation using thiourea as a sulfur source via vapor deposition yields the NiCoSCN@three-dimensional graphene anode material. When this anode material is applied to sodium-ion battery anodes, nickel doping improves the rate performance and long-cycle stability of the material. (5 A g) ‑1 After 400 cycles, the capacity retention is ≥80% at 10 A g. ‑1 After 1000 cycles, the capacity retention rate can still reach over 65%. This method has a simple preparation process and broad application prospects in the energy field.

The invention belongs to a hydrogen circulating pump runner structure in the technical field of hydrogen circulating pumps. The first shell flow channel (13) comprises a first inner ring (14) and a first outer ring (15), the first outer ring (15) is provided with a first convex part (16), the second shell flow channel (31) comprises a second inner ring (32) and a second outer ring (33), the second outer ring (33) is provided with a second convex part (34), a first shell first fit clearance (Ga) is formed between the first convex part (16) and the outer diameter of the impeller (2), and a second shell second fit clearance (Ga) is formed between the first convex part (16) and the outer diameter of the impeller (2). A gap between the first outer ring (15) and the outer diameter of the impeller (2) is a second fit clearance (Gb) of the first shell, and the first fit clearance (Ga) of the first shell ranges from 0.15 mm to 0.4 mm. The flow channel structure of the hydrogen circulating pump is simple in structure, under the condition that the appearance change is small, the flow of the hydrogen pump is effectively increased, the flow resistance is reduced, the shell rubbing risk of the impeller and the flow channel is reduced, the high-performance flow channel structure is achieved, meanwhile, due to the fact that the fit clearance is changed, the finish machining face is reduced, and the machining cost and time are reduced.

The invention discloses a two-way equal-force elastic executing element and a compensation device based on the element, the executing element comprises a cylinder body assembly, a stepped shaft-shaped pull rod, a piston assembly, a two-way valve and a valve core, the interior of a piston is divided into a plurality of air pressure cavities, buffering, pressure equalizing and pressure maintaining are achieved through the two-way valve, rigid impact is reduced, and the service life is prolonged. During working, the pull rod only bears tensile force or pressure at the same moment, and bidirectional equal-force output can be achieved under the working conditions of stretching and compressing. Based on the execution element, the invention further provides a wheel body eccentric rotation compensation device, a plane universal compensation device and a three-dimensional space universal compensation device, and passive self-adaptive compensation can be achieved in a radial plane, a horizontal plane or a three-dimensional space. The two-way elastic acting and dynamic compensation device is diversified in structural form, stable in stress, free of motion retardation, capable of being scaled in equal proportion, adaptive to various cavity sections, wide in application range and capable of meeting the requirements for two-way elastic acting and dynamic compensation in multiple scenes.

This invention discloses a walnut-shaped In2O3 / CuO material, its preparation method, and its applications, comprising the following steps: Step 1: solvothermal synthesis of a bimetallic coordination polymer precursor; Step 2: controllable pyrolysis of the precursor to convert it into a target oxide composite material; This invention addresses the difficulty of synergistic regulation of heterostructures and oxygen vacancies in existing methods by proposing a one-step solvothermal-programmed pyrolysis method to prepare a walnut-shaped In2O3 / CuO heterojunction composite material with a three-dimensional hierarchical porous structure and controllable oxygen vacancies, thereby achieving simultaneous optimization of material structure, composition, and defects to improve low-temperature Cl2 sensing performance.