63results about How to "Beautifully furnished" patented technology

The invention provides a spray pipe throat channel segment water cooling structure comprising a spray pipe internal wall, an external shell, a cooling water inlet water collection ring, a cooling water outlet water collection ring, small supports, a clamping block and a blocking circle. The clamping block is wrapped on the spray pipe internal wall. A cooling water channel is formed between the spray pipe internal wall and the clamping block. The rear end along an airflow direction of the spray pipe internal wall is connected with the external shell via the blocking circle. The cooling water inlet water collection ring and the cooling water outlet water collection ring are annular rings surrounding the external shell and are respectively configured on the front end along the airflow direction of the external shell and circumference of the external side of the rear end. The cooling water inlet water collection ring is connected with the external shell via water inlet pipes which are circumferentially and evenly distributed on the cooling water inlet water collection ring. The cooling water outlet water collection ring is connected with the external shell via water outlet pipes which are circumferentially and evenly distributed on the cooling water outlet water collection ring. The cooling water inlet water collection ring and the cooling water outlet water collection ring are connected with the foundation via the small supports configured below the cooling water inlet water collection ring and the cooling water outlet water collection ring respectively. The spray pipe throat channel segment water cooling structure is great in cooling effect, and the requirement of a hypersonic speed low-density wind tunnel blowing test can be met. Besides, the structure is simple, dismounting is convenient and cost is saved.

The invention provides a prefabricated concrete composite floor slab with adjustable height. The prefabricated concrete composite floor slab comprises angle steels, soft material, a steel bar truss, L-shaped screw rods, concrete and nuts. The concrete and the steel bar truss are jointly poured in a factory to form a component A1 with holes in both sides, and slotting hole angle steels are placed at the bottom of the component A1 in a hole-aligned mode. Vertical rods of the L-shaped screw rods on the site penetrate through the component A1 and holes of the angle steels and are tightened by nuts, and cross bars are hung on the upper surfaces of beams during lifting. After lifting, the height of the prefabricated floor slab is adjusted by adjusting the nuts on the L-shaped screw rods, the relative position of floor slabs and the beams is adjusted, it is ensued that the surfaces of the floor slabs are flush, and the assembly problem caused by the uneven surface of a concrete component is solved. The prefabricated slab and the angle steels serve as a bottom formwork, gaps are filled with the soft material to prevent slurry leakage, and pouring of a post-poured layer is facilitated. Partof the beam height is invisible from the floor slab, and the clear height of a structural layer is increased. The steel bar truss in the prefabricated floor slab enhances the adhesion of new and oldpouring layers, and the integrity of the prefabricated concrete composite floor slab is improved.

A height-adjustable assembly-type prefabricated concrete composite floor slab comprises angle steel, steel bar trusses, L-shaped screw rods, concrete and nuts. A component A1 is composed of the anglesteel, the concrete and the steel bar trusses jointly, and holes are reserved in the two sides of the beam direction of a prefabricated plate; the component A1 is manufactured in a factory and assembled on site in a lifted mode; transverse rods of the L-shaped screw rods are hung on the upper surface of a beam, and vertical rods penetrate through the holes in the prefabricated plate and are screwed through the nuts; after lifting, the height of the prefabricated plate can be adjusted by adjusting the nuts on the L-shaped screw rods, the relative positions of floor slab bodies and the beam areadjusted, it is guaranteed that the lower surfaces of all the floor slab bodies are flush, and the lifting problem caused by the uneven surface of a concrete composed is solved; through the connectingmode, part of the beam depth is hidden, and the clear height of a structural layer is increased; the adhesive force of new and old concrete layers is increased through the steel bar trusses in the prefabricated plate, and the overall performance of the composite floor slab is improved; and the prefabricated plate and the beam are lifted on site through the L-shaped screw rods and the nuts, and the height-adjustable assembly-type prefabricated concrete composite floor slab conforms to the concept of assembly-type buildings.