33results about How to "Indestructible strength" patented technology

The invention relates to a vacuum suction table of a double-layer structure. The vacuum suction table comprises a frame, a bottom plate, a panel and honeycomb cores; the bottom plate is provided with bottom plate suction openings and the panel is covered with small adsorption holes; the vacuum suction table is characterized in that the inner region of the frame includes air duct regions and installation regions, the air duct regions and the installation regions are independent mutually, the air duct regions are internally provided with air duct suction openings which are communicated with the bottom plate suction openings in a one-to-one correspondence mode, the installation regions correspond to the honeycomb cores one to one, and the frame is filled with corrugated cores located above the honeycomb cores, each corrugated core includes an upper end face, a lower end face and supporting connection faces, each upper end face is combined with the supporting connection faces located at the two sides of the upper end face to form an aeration area which is communicated with the corresponding air duct region, the upper end faces are connected with the panel and provided with small air holes A which are communicated with the small adsorption holes in a one-to-one correspondence mode, a part of lower end faces are in connection with the corresponding honeycomb cores in a covering mode, and the other part of the lower end faces are connected with the corresponding air duct regions. The vacuum suction table is high in strength, internal gas paths are small in windage resistance, energy loss is low, and adsorption force is large and uniform.

The invention relates to a pre-heating type solar water heater which comprises a pre-heating water tank; a plurality of heat collecting tubes are fixedly arranged on the upper part of the pre-heating water tank; the pre-heating water tank comprises a housing layer and a light-transmitting plate; a pre-heating cavity is formed between the light-transmitting plate and the housing layer; a light reflecting layer is arranged on the surface of the housing layer; the pre-heating water tank is connected with the heat collecting tubes through a connecting water tank; the connecting water tank comprises a water inlet cavity, a middle-temperature cavity and a high-temperature cavity; the bottom of the water inlet cavity is connected with a public water source; the top of the water inlet cavity communicates with the bottom of the pre-heating water tank; the bottom of the middle-temperature cavity communicates with the top of the pre-heating water tank; the top side wall of the middle-temperature cavity communicates with each heat collecting tube; the bottom of the high-temperature cavity is separately equipped with a low-temperature circulating tube and a high-temperature water inlet tube; the low-temperature circulating tube passes through the top of the middle-temperature cavity and extends to the bottom position of the middle-temperature cavity; the high-temperature water inlet tube communicates with the top of the middle-temperature cavity; the other end of the high-temperature water inlet tube extends to a top position of the high-temperature cavity; and a used water drainage tube is further arranged on the top of the high-temperature cavity.

The invention belongs to the technical field of highway bridge reinforcing projects , and discloses a highway T beam diaphragm plate prestress reinforcing structure and a working method for reinforcement using the reinforcing structure. The highway T beam diaphragm plate prestress reinforcing structure is mainly characterized by comprising a beam body and diaphragm plates, wherein concrete reinforcing bodies are arranged on two sides of the diaphragm plates in the lateral direction of a bridge, under the diaphragm plates, and on two sides of the diaphragm plates under the beam body in the longitudinal direction of the bridge; lateral post-embedded bars are arranged between the beam body and the concrete reinforcing bodies; vertical post-embedded bars are arranged at the bottom of the beam body; lateral main reinforcing bars and flat bellows in which lateral prestress bars are arranged are arranged in the concrete reinforcing bodies; the lateral main reinforcing bars and the flat bellows are respectively connected with the lateral post-embedded bars through large stirrups and are connected with the vertical post-embedded bars through small stirrups; under-anchor backing plates and multi-hole flat anchorage devices are arranged at two end parts of each of the concrete reinforcing bodies. According to the highway T beam diaphragm plate prestress reinforcing structure disclosed by the invention, the beam body is not damaged; the lateral join disease problem of the highway bridge is solved through utilizing an active reinforcing technology with prestress, and the durability of T beams is improved.

This application provides a method for modifying high-performance carbon paper with supercritical fluid technology. Under the action of supercritical fluid, O2 and titanate coupling agent are used to modify carbon fiber synergistically. On the one hand, it can reduce the oxidation time and improve the carbon fiber surface. roughness and oxygen-containing groups, more effectively wet the surface of carbon fibers, and achieve uniform surface modification; The number and types of oxygen-containing functional groups on the surface of carbon fibers are small, and the modification effect of a single titanate coupling agent is not obvious, thereby improving the mechanical properties and electrical conductivity of carbon paper.