11results about How to "No structural damage" patented technology

The present application relates to the field of sodium hyaluronate preparation, in particular to a preparation method of low molecular weight sodium hyaluronate. Specifically comprising the following steps: stirring and dissolving macromolecular weight sodium hyaluronate powder into water at 45-60 DEG C to obtain a macromolecular weight sodium hyaluronate solution; cooling to 35-45 DEG C, adding a buffer solution and mixing uniformly, then adding papain and hyaluronidase with a mass ratio of (2-3):(3-6) for enzymatic reaction to obtain an enzymatic solution; adding sodium hydroxide solution to the enzymatic solution, adjusting pH to 7.5-9.0, heating to 80-90 DEG C for 20-40 minutes, then filtering to obtain a low molecular weight sodium hyaluronate solution; spray drying, and the process is simple, the conditions are mild, the product structure is not damaged, and the prepared low molecular weight sodium hyaluronate has high purity, uniform molecular weight distribution and good permeability.

The utility model discloses a modularized buoyancy tank platform for water operation, which comprises a buoyancy tank module and a connecting component, a plurality of connecting grooves are arranged along the peripheral side wall of the buoyancy tank module, and the connecting grooves extend from the top of the buoyancy tank module to the bottom of the buoyancy tank module; the connecting assemblies can be inserted into the two opposite connecting grooves in the vertical direction. The connecting assembly comprises a first locking piece and a second locking piece, the first locking piece is located at the bottom of the second locking piece, the second locking piece comprises a connecting block, an opening assembly and a clamping assembly, a containing cavity is formed in the connecting block, the opening assembly is arranged in the containing cavity in the vertical direction, and the clamping assembly is arranged in the containing cavity in the horizontal direction; the opening assembly is located at the top of the clamping assembly. When the modular buoyancy tank platform is assembled, the purpose of connecting the buoyancy tank modules is achieved by inserting the connecting assemblies into the opposite connecting grooves of the adjacent buoyancy tank modules, when the modular buoyancy tank platform is disassembled and assembled, the connecting assemblies are taken out of the connecting grooves after the fastening connection between the connecting assemblies and the connecting grooves is removed, and the disassembling and assembling efficiency of the modular buoyancy tank platform is improved.

The application discloses a photovoltaic junction box defect detection system and method based on eddy current excitation and infrared thermal imaging coupling technology, and relates to the field of photovoltaic junction box defect detection.The photovoltaic junction box defect detection system comprises an eddy current excitation module, which is used for applying an alternating magnetic field to a photovoltaic junction box to be detected, so that eddy currents are induced in the internal conductors of the photovoltaic junction box, and differential Joule heat responses are formed at the welds in different contact states; an infrared thermal imaging module, which is used for collecting temperature distribution information of the surface of the photovoltaic junction box and generating a thermal image sequence; and an intelligent algorithm module, which is electrically connected with the infrared thermal imaging module and is used for processing the thermal image sequence, wherein the intelligent algorithm module comprises an image preprocessing unit, a multi-scale wavelet decomposition unit, a variable point detection unit and a defect judgment unit connected in sequence.The application can intensify defect signals through active eddy current excitation, and can detect early and mild false-weld defects by using a targeted variable point detection algorithm and being sensitive to weak temperature rise signals.

This utility model relates to the field of surface acoustic wave (SAW) filter technology, and particularly to a temperature-compensated SAW filter, comprising a wafer, a first mass load structure disposed on the wafer, an interdigital transducer disposed on the wafer and covering the first mass load structure, a first temperature compensation layer disposed on the wafer and covering the interdigital transducer, a second mass load structure disposed on the first temperature compensation layer, and a second temperature compensation layer disposed on the first temperature compensation layer and covering the second mass load structure; the first mass load structure is disposed in the finger strip region of the interdigital transducer; this utility model provides a temperature-compensated SAW filter with a simple structural design, avoids corrosion of the interdigital transducer during the operation of the mass load structure, and facilitates the suppression of clutter by the mass load structure.

The utility model belongs to door and window technical field, concretely relates to a reconstruction type window of old window frame free disassembly. The utility model discloses: inner window frame, the outer window frame of sealing connector and inner window frame connection, inner extension board, install the lower end surface of inner window frame, protection assembly, install the lower end surface of outer window frame, protection assembly includes the snap -in boss of fixed setting on the outside of outer window frame, and the snap -in piece of " 7 " type snap -in cooperation with snap -in boss, inner window frame, outer window frame and window body set up on the old window frame that needs reconstruction, and inner extension board, " 7 " type snap -in piece all extend to the lower end surface of old window frame, and inner extension board, " 7 " type snap -in piece and old window frame between set up the filler for sealing fastening. The reconstruction type window of the utility model does not need to remove the old window frame as a whole, need not to destroy wall body structure, simplifies construction process and cost controllable.

This invention relates to a wall panel, a wall panel installation structure, and a construction method. The wall panel includes a panel body and a frame fixed to the back of the panel body and distributed around the edge of the panel body. Both the panel body and the frame are equipped with a front-to-back adjustment mechanism. An adjustment seat is installed on the back of the panel body via the front-to-back adjustment mechanism. A snap-fit ​​block is installed on the side of the adjustment seat opposite to the panel body. The panel installation structure includes a loading component and a dual-axis adjustment assembly. This invention integrates the front-to-back adjustment mechanism on the panel body and the frame, enabling fine-tuning of the panel after installation without disassembly. The threaded transmission combined with a guide and limiting structure improves the adjustment accuracy and controllability of the adjustment stroke, preventing swaying or shaking of the panel body during adjustment. The integrated design of the dual-axis adjustment assembly integrates the left-to-right and up-to-down adjustment modules onto the loading component, enabling non-destructive fine-tuning of the panel body in the left-to-right and vertical directions after installation.

The utility model discloses a prefabricated wallboard of integrated electrical pipeline, including prefabricated wall bottom plate, prefabricated wall panel, sound insulation material layer, reinforcing bar layer and buffer pad, the one side of prefabricated wall bottom plate is provided with integrated electrical pipeline mounting groove, the integrated electrical pipeline mounting groove is arranged fixed with integrated electrical pipeline through the fixed clamp of installation, the prefabricated wall bottom plate is opened with the docking groove, the prefabricated wall panel is installed with the docking rod, the docking rod is connected with docking groove slidingly, the prefabricated wall panel is opened with fixed screw hole B, the docking rod is opened with fixed screw hole A, fixed screw is installed in fixed screw hole A and fixed screw hole B with fixed screw hole B. The utility model makes the layout of electrical pipeline more flexible, and the electrical pipeline can be adjusted flexibly after the installation of prefabricated wall panel, increases the flexibility and variability of building internal space layout, does not need to destroy wall structure, greatly improves construction efficiency and the convenience of later maintenance.

The utility model discloses an adjustable test bench, including the test mesa, be provided with the adjusting panel on the test mesa, be provided with a plurality of height adjusting holes and a plurality of mounting holes on the adjusting panel, rotate and set up the butterfly bolt for adjusting the height of adjusting panel on the test mesa in any height adjusting hole, be provided with the corner aluminum for the tight fixed position fuel tank through the bolt fixed connection on any mounting hole, and the precise adjustment of the horizontal height of fuel tank is completed to the application with butterfly bolt, satisfies the demand for the horizontal placement of fuel tank in the fuel tank test process.

This invention discloses a special elastic element for ultra-wear-resistant, long-life, modular multi-directional displacement bridge expansion joints, belonging to the field of bridge engineering materials. The composite elastomer body includes a rubber spring, a side beam rubber bearing, and a rubber support. The elastic element comprises a composite elastomer body and a multi-layered reinforced steel skeleton embedded within it. The composite elastomer body is composed of the following components by weight: 100 parts chloroprene rubber, 30-50 parts ultra-wear-resistant sliding material ZMSM system, 5-15 parts anti-fatigue aging system, and 3-8 parts processing aids. The reinforcing and wear-resistant system includes high-wear-resistant sliding material ZMSM carbon black and nano-ceramic particles. Through nanomaterial reinforcement and a unique C-shaped structure design, this invention enables the elastic element to not only possess ultra-high wear resistance and fatigue aging resistance, but also achieve flexible multi-directional displacement in the longitudinal, lateral, and vertical directions, effectively ensuring the displacement uniformity of the modular expansion joint and significantly improving the overall service life of the bridge expansion joint.

The application discloses a modification method for realizing the conductivity of basalt fiber. The method forms a conductive polymer on the surface of the basalt fiber through an in-situ polymerization method, so that the basalt fiber is endowed with conductivity. The method can control the particle size of the conductive polymer, the coating thickness and the conductivity of the basalt fiber by adjusting experimental parameters such as the types and concentrations of monomers, oxidants and dopants and the polymerization reaction time. The method is simple and efficient in manufacturing process, and is strong in controllability of structure and performance. The modified basalt fiber has good conductivity, and the resistivity of the basalt fiber is adjustable in the range of 1~10 ‑3 Ω·cm, which widens the application of the basalt fiber in the fields of electromagnetic shielding and electrostatic protection. Moreover, the method does not damage the structure of the fiber itself while realizing the conductivity of the basalt fiber, and improves the mechanical performance of the basalt fiber to a certain extent.