17results about How to "Improved dissipation capacity" patented technology

The invention relates to the technical field of flexible display devices, in particular to a high-impact-resistance coating for ultra-thin glass, a preparation method and an assembly layer. The invention discloses a high-impact-resistance coating for ultra-thin glass. The high-impact-resistance coating is mainly prepared from a precursor, a cross-linking agent and a photoinitiator in a solvent-free condition in a UV curing manner, the precursor comprises a polyether urethane acrylate oligomer with Tg of-70 DEG C to-40 DEG C; the Tg of the coating is 30-60 DEG C; and in a temperature scanning test with the temperature range of-40 to 80 DEG C and the frequency of 1Hz, the peak value of the loss factor of the coating is 0.7 to 1.2. The high-impact-resistance coating provided by the invention has good adhesion and excellent optical performance, also has good elongation at break and good flexibility, has a high dissipation effect on mechanical stress, and can enhance the impact resistance of the ultra-thin glass. In addition, the high-impact-resistance coating is prepared through a UV photocuring method and does not contain a solvent, the VOC emission in the production and preparation process is low, and the coating is green and efficient.

The invention provides an impeller ring sealing device of a centrifugal pump and the centrifugal pump. The impeller ring sealing device comprises a movable ring and a static ring which are arranged between an impeller ring and an impeller front cover. The distance between every two adjacent sets of static ring teeth is Bc, and the distance between the inner circumferential face of the static ring and the outer circumferential face of the movable ring is Ht. The section of the movable ring tooth is in a dry shape, and the movable ring tooth comprises a radial ring tooth extending in the radial direction, a first axial ring tooth and a second axial ring tooth, wherein the first axial ring tooth and the second axial ring tooth are perpendicular to the radial ring tooth and parallel to each other. The distance Hb between the first axial ring teeth and the second axial ring teeth ranges from 0.05 Ht to 0.35 Ht. The distance Ha between the first axial ring teeth and the outer circumferential face of the movable ring ranges from 0.05 Ht to 0.35 Ht. The tooth thickness Ba of the radial ring teeth in the axial direction ranges from 0.1 Bc to 0.4 Bc. The tooth width Hv of the first axial ring teeth and the second axial ring teeth in the radial direction ranges from 0.1 Ht to 0.2 Ht. The distance Cs between the first axial ring teeth and the static ring teeth on the two adjacent sides and the distance Cs between the second axial ring teeth and the static ring teeth on the two adjacent sides are 0.1 Bc to 0.25 Bc. The eddy-current loss in the sealing cavity is increased by adjusting the tooth structure of the moving ring, so that the leakage amount of fluid at the wear ring under the high-pressure working condition is greatly reduced.

The invention relates to the field of ocean engineering, and discloses a multi-layer pore plate structure for shock absorption of an ultra-large floating body, the structure is composed of a plurality of pore plates which are horizontally arranged, and the pore plates are rigidly connected with the floating body through fixing devices and are made of high-strength light materials; open pores are uniformly distributed in the surface of each pore plate, and the porosity, the plate spacing, the water entry depth and the plate layer number of the pore plates can be flexibly adjusted according to the working environment and the wave condition of the floating body; the porosity range is 6%-15%, the distance between the plates is 4.2%-16.7% of the working water depth of the floating body, and the water entering depth is 1-3 times of the height of the wave below the bottom surface of the floating body; through reasonable design and arrangement, the multiple layers of porous plates can effectively reduce transmission and reflection of wave energy, the energy dissipation capacity is enhanced, and vibration reduction of the head wave side and dynamic stability of the back wave side are achieved; the damping device has the characteristics of flexible structural design, remarkable damping effect and wide application range, and is suitable for offshore and deep sea ultra-large floating body engineering.

The application discloses a dry-type transformer production equipment and belongs to the field of transformer production. The device comprises a rack, a negative pressure dust collection workbench arranged at the middle part of the rack, a support arranged above the negative pressure dust collection workbench, two groups of support plates arranged at the top of the rack, a driving shaft one rotatably arranged in one group of the support plates, a driving shaft two rotatably arranged in the other group of the support plates, and clamping pieces arranged at the output ends of the driving shaft one and the driving shaft two and used for clamping an insulating cylinder. The negative pressure dust collection workbench is arranged at the middle part of the rack to adsorb and blow away the copper scraps and insulating dust. A hierarchical pressure relief gas path composed of a buffer pipe, a gradually expanding inverted conical middle nozzle and a circular corner exhaust hole pressure reduction circular plate is arranged to weaken the high pressure of the air compressor starting and stopping transient peak value, and the hierarchical pressure relief gas path is cooperated with the air compressor to improve the yield of the dry-type transformer winding.

The invention relates to traditional Chinese medicine gel for treating thyroid nodules from liver as well as a preparation method and application of the traditional Chinese medicine gel. The traditional Chinese medicine gel takes an extracting solution of a traditional Chinese medicine composition as an effective component in parts by weight, the traditional Chinese medicine composition comprises the following raw materials: 15-25 parts of selfheal, 10-20 parts of radix bupleuri, 8-15 parts of vinegar-processed curcuma zedoary, 8-15 parts of fructus forsythiae, 5-15 parts of thunberg fritillary bulb, 5-15 parts of moutan bark, 5-8 parts of scutellaria baicalensis, 5-10 parts of oyster, 3-8 parts of mint and 3-8 parts of borneol. From the perspective of soothing liver-qi stagnation, the thyroid nodules are treated by firstly soothing liver-qi stagnation and cooperating with phlegm reducing, stagnation resolving, blood circulation promoting and blood stasis removing, mint and borneol are added in the formula, and the overall improvement effect of the external medicine on unhealthy emotions such as depression and anxiety and the dissipation effect on the nodules are enhanced. Meanwhile, all the medicinal materials in the formula are classified, extracted and refined, all the effective components are reserved to the maximum extent, transdermal absorption is good, and the effects of reducing swelling, removing stasis and improving the depressive emotion are improved.

The application belongs to the technical field of advanced manufacturing and mine machinery equipment, and discloses a preparation method of a full-negative Poisson ratio energy-absorbing component, which solves the problem that the existing energy-absorbing component design cannot meet the high energy-absorbing demand under extreme impact working conditions. The method comprises the following steps: (1) full-parameterization design of a macro-negative Poisson ratio structure based on multi-target Bayesian optimization; (2) preparation and process parameter simulation optimization of a micro-negative Poisson ratio steel forming powder; (3) laser additive-warm subtractive composite preparation of a full-negative Poisson ratio porous structure component; and (4) post-heat treatment of the full-negative Poisson ratio porous structure component and macroscopic and microscopic toughening regulation. The application greatly improves the energy-absorbing efficiency, breaks through the bottleneck of high-precision preparation of a complex interconnected porous structure, and realizes the optimal balance of full-parameterization design and multi-target performance.

The invention discloses an antistatic dry film protective film and a preparation method thereof, and relates to the technical field of dry film protective films.The dry film protective film is formed by compounding a matt finish layer, an adhesion layer and a core layer, and the core layer is located between the matt finish layer and the adhesion layer; the core layer is prepared from the following components in parts by weight: 60-80 parts of co-polypropylene, 18-40 parts of a polyolefin elastomer and 3-10 parts of a composite antistatic agent; according to the prepared dry film protective film, static electricity accumulation is effectively reduced, the overall performance of the protective film is improved, the protective film has better dustproof and anti-scratching capacity and stable binding power and peelability, the service life of the protective film is prolonged, and the efficiency and quality of the follow-up machining process are improved.

This utility model discloses a vibration damping device, wall panel, and mechanical equipment based on a Mikaelian lens. The vibration damping device based on a Mikaelian lens includes: a conformal self-focusing lens; a vibration damping element disposed on a portion of the conformal self-focusing lens corresponding to at least one wave focus; and / or an energy harvesting element disposed on a portion of the conformal self-focusing lens corresponding to at least one wave focus. Thus, by disposing of the vibration damping element and / or the energy harvesting element on the portion of the conformal self-focusing lens corresponding to at least one wave focus, or on a portion of the conformal self-focusing lens adjacent to at least one wave focus, the vibration damping element can suppress vibrations transmitted to the conformal self-focusing lens, and the energy harvesting element can collect and utilize the vibrational energy transmitted to the conformal self-focusing lens.

The application discloses a rail corrugation suppression device and a mounting method, and belongs to the technical field of rail transit. The rail corrugation suppression device comprises a suppression mechanism, the suppression mechanism is symmetrically arranged on both sides of the rail waist of a rail, the bottom of the rail is provided with a fixing mechanism for fixing the suppression mechanism on the rail, an energy consumption box is arranged on the fixing mechanism, and the energy consumption box is located directly below the rail. The suppression mechanism comprises a plurality of box bodies arranged in a linear array, a plurality of first suppression layers and second suppression layers are arranged in the box bodies, and the first suppression layers and the second suppression layers are arranged at intervals. The rail corrugation suppression device and the mounting method can solve the problem that the existing rail corrugation suppression device has poor damping effect on rail vibration and noise.

The present application relates to a multiphase water self-sealing multi-pivot joint anti-explosion device, belonging to the technical field of anti-explosion devices, and is used to solve the technical problems of poor anti-explosion effect and low safety of anti-explosion devices. The anti-explosion device includes: an explosion-proof housing, a connecting pipeline, a first gravity airtight valve, and a first airtight valve gravity hammer. The explosion-proof housing is of a cylindrical structure, and the explosion-proof housing is suitable for containing water; the connecting pipeline includes: an air flow channel, a first opening and a second opening communicated with the air flow channel. The first opening is suitable for communicating with an explosive fluid, the second opening is communicated with the explosion-proof housing, and the second opening is located below the water level; the first gravity airtight valve has a first state and a second state. In the first state, the first gravity airtight valve can be closed under the gravity of the first airtight valve gravity hammer to disconnect the first opening from the second opening. In the second state, the first gravity airtight valve can be opened under the action of the air explosion airflow to connect the first opening with the second opening.

The utility model discloses an axial flow fan blade and an axial flow fan, the axial flow fan blade comprises a blade, the blade is provided with a trailing edge, and the trailing edge of the blade is provided with a trailing edge blade tip; and the annular empennage is connected to the blade, the annular empennage is located at the blade tip of the trailing edge, the annular empennage is of an annular structure, and the cross section of the annular empennage is oval. The axial flow fan blade and the axial flow fan effectively solve the problem that in the prior art, the axial flow fan blade cannot reduce noise and increase air volume at the same time.

The invention relates to the technical field of offshore photovoltaic power generation, and discloses a wave absorbing device for offshore photovoltaic power generation, which is characterized in that a first end part of a wave absorbing structure is positioned above a second end part, and the first end part is arranged on one side, close to a photovoltaic module, of the second end part in a wave coming direction, so that the wave absorbing structure forms a slope type structure; the slope-type wave absorbing structure has the advantages that the reflection coefficient of the wave absorbing structure can be reduced, the wave absorbing structure can serve as a main wave absorbing part by mounting the wave absorbing structure on the top of the supporting foundation, waves can be broken on the surface of the slope-type wave absorbing structure, and the energy of the waves can be effectively eliminated in the movement of the waves in the horizontal direction and the vertical direction.

This invention discloses an additive manufacturing-based inertial amplification nonlinear low-frequency vibration isolation metamaterial structure, vibration isolation device, and its performance control method. The vibration isolation metamaterial structure includes a rhombic frame structure, an inertial amplification unit, and a square spring structure. The square spring structure is arranged within the rhombic frame structure, with its two ends connected to a pair of opposite corners of the rhombic frame structure. The elastic extension direction of the square spring structure is parallel to the diagonal of this pair of opposite corners of the rhombic frame structure. The inertial amplification unit has a centrally symmetrical structure, including a rigid rod, two counterweights, and two diagonal rods. The center of symmetry of the inertial amplification unit, the center of the rhombic frame structure, and the center of the square spring structure all coincide in projection. Therefore, the vibration isolation metamaterial structure of this invention significantly widens the bandgap range and enhances low-frequency vibration isolation performance, exhibiting excellent performance in suppressing longitudinal waves in the 0-1000Hz low-frequency range, increasing vibration damping, and energy absorption.

The present invention discloses a bionic thermal insulation, noise reduction and fireproofing integrated nanofiber aerogel and a preparation method thereof, and belongs to the technical field of fiber aerogel. The preparation method of the bionic thermal insulation, noise reduction and fireproofing integrated nanofiber aerogel of the present invention comprises the following steps: mixing silica sol and water to obtain a premixed liquid, then adding a hydrophilic colloid and SiO2 nanofibers, mixing evenly, and obtaining a suspension; performing directional freezing on the suspension, and then vacuum drying and sintering to obtain the bionic thermal insulation, noise reduction and fireproofing integrated nanofiber aerogel. The present invention utilizes the property that hydrophilic colloids can gel with the change of temperature, and can quickly solidify to form a high-strength gel during the directional freezing process to solidify the fiber matrix and the infrared sunscreen reinforcing phase, and then removes ice crystals and hydrophilic colloids through freeze drying and high-temperature sintering, thereby solving the sedimentation problem of high-density reactants during the freezing process.

The invention relates to a floating plate type tuning liquid damping device which comprises a water tank and liquid in the water tank and further comprises a floating plate, a sliding connection assembly and a gravity center adjusting assembly, the floating plate is arranged in the water tank, and the sliding connection assembly surrounds the periphery of the floating plate and is used for being in sliding connection with the interior of the water tank in the vertical direction; the sliding connection assembly is provided with an energy consumption unit used for increasing resistance. The gravity center adjusting assembly is arranged at the top of the floating plate and used for changing the gravity center of the floating plate. Vibration energy can be more effectively dissipated, and the vibration reduction effect is remarkably improved.

The invention relates to the technical field of shock absorption and isolation of engineering structures, and provides a support anti-disengaging self-resetting anti-overturning device which comprises an upper supporting part and a lower supporting part, the upper supporting part comprises a friction box, a friction block, a connecting rod, a first resetting rod and a second resetting rod, and the lower supporting part comprises a sliding frame, a third resetting rod, a sliding block and a universal transmission assembly. Multi-directional displacement of the structure under the earthquake action is decomposed and allocated through the upper branch part and the lower branch part and is borne by the upper branch part and the lower branch part respectively, a loose and coupled working mechanism is formed, the vertical tensile capacity of the support is improved while normal horizontal rotation of the support is not affected, and the service life of the support is prolonged. Different from a traditional rigid tensile mode, disengaging separation between the structure and the support is reduced, reciprocating energy consumption and post-earthquake resetting are achieved through a first resetting rod, a second resetting rod and a third resetting rod, energy is dissipated again through linkage reciprocating sliding of a friction block and a friction box and linkage reciprocating sliding of a sliding block and a sliding frame, the overall response of the structure is controlled, and the service life of the structure is prolonged. And the safety and reliability of the structure are ensured.

This invention relates to the field of interlayer technology in laminated glass, and particularly to a binary composite plasticized gradient structure PVB interlayer, its preparation method, and laminated glass. The interlayer has a three-layer gradient structure, consisting of a first surface layer, a middle sound-insulating layer, and a second surface layer from the outside in. Both the first and second surface layers contain a first PVB resin and a first composite plasticizer, which includes diethylene glycol dibenzoate and 3GO. The middle sound-insulating layer contains a second PVB resin and a second composite plasticizer, which includes a mixture of diethylene glycol dibenzoate and 3GH. This invention, through innovative material formulation and structural design, provides a PVB interlayer solution that balances high weather resistance, excellent sound insulation, strong adhesion, low plasticizer migration tendency, and additional heat insulation functions. It also includes a stable and efficient preparation method, effectively overcoming the limitations of existing technologies where performance cannot be synergistically improved.