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146results about How to "No performance impact" patented technology

Cooling costume for distribution network hot-line work

The invention relates to cooling costume for distribution network hot-line work, which is characterized in that a phase-change material bag and a circular cooling water pipe are arranged in a mesh vest; the circular cooling water pipe is clamped between the phase-change material bag and the mesh vest; the circular cooling water pipe is provided with a cooling water pipe joint on the edge of the mesh vest; the cooling water pipe joint is connected to a circular cooling water joint on a cool storage tank through a connecting pipe; the cool storage tank comprises an ice storage box, a control module capable of controlling the circulation of cooling water, a water pump and a cell; the opening of the ice storage box is connected with the water pump; the water pump is connected to the circular cooling water joint; and the control end of the water pump is connected with the control module. According to the invention, the cooling costume is a device for reducing temperature in insulting costume when distribution network hot-line workers carry out maintenance operation at high-temperature/humidity weather; ice is used as cool storage material; circular cooling water is made as refrigeration source; the cold air of the circular cooling water and heat quantity in the insulating costume are absorbed by phase-change material; thus, heat comfort in the insulating costume is ensured.
Owner:WUXI POWER SUPPLY JIANGSU PROVINCE ELECTRIC POWER +3

Gallium liquid metal material and application of gallium liquid metal material to teletransmission pressure and different pressure transmitter

The invention discloses application of a gallium liquid metal material to a teletransmission pressure and different pressure transmitter. The pressure and different pressure transmitter is provided with a capillary tube filled with a liquid medium, and the whole or part of the capillary tube is filled with the gallium liquid metal material. According to parameter requirements of the gallium liquid metal material, the heat conductivity is larger than 10 W/m*k, the kinematic viscosity is (5*10-8-9*10-8) m<2>/s, the melting point is lower than 15 DEG C, and the boiling point is larger than 1000 DEG C. The gallium liquid metal material is gallium liquid metal or gallium-based liquid alloy metal. The application has the beneficial effects that the gallium liquid metal material with the very high nominal melting point is used on the pressure and different pressure transmitter, the gallium liquid metal material is not liable to be vaporized even the nominal high-temperature boundary point is approached, the gallium liquid metal material still has very good fluidity, the performance cannot be affected, and sensitivity and precision of a measuring instrument are maintained. The highest use temperature of the gallium liquid metal material can be 1200 DEG C or higher, and the gallium liquid metal material can also be used on high-temperature and negative-pressure occasions.
Owner:SHANGHAI ROCKSENSOR AUTOMATION

A single-phase photovoltaic grid-connected micro-inverter

InactiveCN105450073AStrong resistance to local shadowsEasy to installAc-dc conversionDc-dc conversionSingle phaseEngineering
The invention discloses a single-phase photovoltaic grid-connected micro-inverter comprising a photovoltaic assembly which is connected to a decoupling circuit. An output terminal of the decoupling circuit is connected to a flyback inverter. The flyback inverter is connected to a rear-stage full-bridge circuit. An output terminal of the rear-stage full-bridge circuit is connected to a municipal power-supply network. The beneficial effects of the present invention are that each photovoltaic assembly works at a maximum power point; the anti partial-shading capability is strong; each flyback inverter is integrated with a single photovoltaic assembly; the single-phase photovoltaic grid-connected micro-inverter can be used once plugged; the installation is convenient; the system expansion is convenient and simple; the space occupied by the flyback inverter is small; the single-phase photovoltaic grid-connected micro-inverter is installed in a distributed mode so as to provide convenience for configuration; and the single-phase photovoltaic grid-connected micro-inverter can be installed in different directions at different angles so as to fully utilize space. The failure of a single photovoltaic assembly will not influence the performance of the whole system. The redundancy of the system is high and the reliability is high.
Owner:ANYANG NORMAL UNIV

Antistatic polystyrene polymer composite material and preparation method thereof

The invention discloses an antistatic polystyrene polymer composite material which comprises the following components in parts by weight: 60-100 parts of polystyrene, 1-10 parts of carbon nano tubes, 1-15 parts of a flexibilizer, 0.1-1 part of an antioxidant, 0.3-3 parts of a lubricating agent, 1-10 parts of a dispersing agent, 0.1-3 parts off a coupling agent, 0-20 parts of a filling agent and 1-5 parts of a compatilizer. The invention further provides a method for preparing the antistatic polystyrene polymer composite material. The carbon nano tube with the weight fraction of 1-6% is added to serve as an antistatic agent, so that the antistatic polystyrene polymer composite material is high in surface gloss and easy to process and mold and has excellent mechanical property and dimensional stability. Moreover, the material is obvious and uniform in antistatic effect, can achieve the electrical resistivity of 103-108Ohm.m, can achieve a rapid antistatic effect and has permanency. Furthermore, lots of solvents are not used in the process of preparing the polystyrene polymer composite material, the usage amount of the antistatic agent is small, the composite material is convenient for volume production and popularization, and to-be-packaged products and surrounding environments are not polluted.
Owner:SHENZHEN NANOTECH PORT

Concrete strength monitoring device and monitoring method

ActiveCN109239316AIntensity non-destructive monitoringNon-destructive monitoringMaterial testing goodsElectricityPrimary Indicator
The invention discloses a concrete strength monitoring device and a monitoring method. According to the device and the method, the initial wave velocity of concrete which is not subjected to erosion and the concrete wave velocity within different depth ranges under different erosion ages are monitored by embedding a piezoelectric smart aggregate in eroded concrete, damage processes such as chiseling concrete samples and the like are not needed to be carried out, and the strength of the piezoelectric smart aggregate itself is sufficiently compatible with concrete, thus the influence on the structural performance of the concrete is avoided, and therefore the nondestructive monitoring of the strength of the eroded concrete can be realized. Based on the concrete strength monitoring device, themonitoring method provided by the invention can monitor the concrete wave velocity in real time non-destructively; by monitoring the wave velocity at different depths of the eroded concrete and constructing a relationship between the wave velocity, dynamic elastic modulus and strength, the compressive strength condition of an eroded concrete structure in accordance with the engineering practice can be directly obtained, and then the concrete structure is subjected to health monitoring and safety assessment by taking the concrete strength as a primary indicator.
Owner:HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL

Confusable anonymous authentication method

The invention relates to a confusable anonymous authentication method used for protecting identity information and a private authentication key of a user in an authentication system. A system administrator and a tracker are arranged in the authentication system; the system administrator is configured with a global public parameter, a master key, and a key pair for linear encryption and decryption;and a system user is configured with a private authentication key. The anonymous authentication method specifically comprises the following steps: confusing the private authentication key by the system user to obtain an obfuscation key; generating an authentication array containing a service request based on the obfuscation key by the system user, and sending the authentication array to a server;performing legality authentication on the authentication array by the server, and performing liveness verification on the system user; providing a service corresponding to the service request to a system user who passes the legality authentication and the liveness verification; and when any one of the legality verification and the liveness verification is not passed, tracking the corresponding system user by the tracker. Compared with the prior art, the confusable anonymous authentication method provided by the invention has the advantages of being traceable, low in attack success probabilityand the like.
Owner:TONGJI UNIV

A large thin-wall stiffened plate shape correction method based on sensitive point multi-point incremental forming

The invention relates to a large thin-wall stiffened plate shape correction method based on sensitive point multipoint incremental forming, which comprises the following steps of acquiring the deformation deviation on a measuring point, and iteratively solving the measuring point with the maximum contribution degree to the overall shape correction of a wallboard as a sensitive point through a particle swarm optimization by combining with a deformation coordination equation of the wallboard; then, through shape correction amount simulation calculation, obtaining the shape correction amount required for enabling the wall plate mold attaching degree to meet the requirement; and finally, applying a shape correction amount to the sensitive point, and loading, releasing and rebounding to realizethe shape correction effect. According to the present invention, by selecting a measuring point to measure the deformation deviation of the shape correction wallboard; obtaining a sensitive point with the maximum influence on the shape correction effect based on sensitive point analysis; performing simulation calculation to obtain a shape correction amount of the sensitive point; and based on a multi-point incremental forming method, applying the shape correction amount to the sensitive points, the effect of large-scale wallboard shape correction is achieved.
Owner:SHANGHAI JIAO TONG UNIV

Experimental facility used for high-low temperature optical evaluation

The invention discloses an experimental facility used for high-low temperature optical evaluation. The experimental facility comprises a sealed box, a sample platform deck, a temperature sensor, a heat-carrying gas inlet channel, a heat-carrying gas overflow channel and an optical test probe, wherein the sample platform deck is arranged inside the sealed box and used for placement of test samples, the temperature sensor is arranged above the sample platform deck and used for measuring temperature in the sealed box, the heat-carrying gas inlet channel is arranged on one side wall of the sealed box and used for leading in heat-carrying gas, the heat-carrying gas overflow channel is arranged on the other side wall of the sealed box and used for exhausting the redundant heat-carrying gas, and the optical test probe is arranged outside the sealed box, located above the sample platform deck, and used for measuring optical performance parameters of the test samples. The specific heat capacity of the heat-carrying gas is greater than 500J/(kg* DEG C). According to the experimental facility, heating evenness of the test samples is good, an optical test lens will not be affected by high and low temperature, no congealing fog is generated in the box, and optical test accuracy is high.
Owner:BOE TECH GRP CO LTD +1
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