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98results about How to "Meet industry standards" patented technology

Method for synergetically treating fluorine-containing sludge in cement kiln

The invention provides a method for synergetically treating fluorine-containing sludge in a cement kiln. According to the method, the fluorine-containing sludge with water content of 40-80% can be synergetically treated in a cement kiln, and the sludge mixing amount accounts for about 1-5% of the total amount of the cement raw material. The method provided by the invention is characterized in that the fluorine-containing sludge with the water content of 40-80% is dried by afterheat tail gas of the cement kiln, so that the fluorine containing sludge can be safely treated in the cement kiln andthe performance indexes of the produced cement reach the national standard. According to the invention, since the fluorine-containing sludge is used as an available resource, the fluorine-containing sludge containing fluorides is safely treated and a great deal of land is saved.
Owner:杭州易辉环保科技有限公司

Three-network integrated dual-mode intelligent set top box

InactiveCN103986948APracticalSolve the lack of application supportSelective content distributionDual modeSmart card
The invention discloses a three-network integrated dual-mode intelligent set top box. The three-network integrated dual-mode intelligent set top box is characterized by comprising a central processing unit, an AndroidDVB processing module, an intelligent card, a memory, a signal processing module, a camera, an audio and video input and output module, a tuner, a communication module and a network module, wherein the AndroidDVB processing module, the intelligent card, the memory, the signal processing module, the camera and the audio and video input and output module are connected with the central processing unit, the tuner is connected with the AndroidDVB processing module, and the communication module and the network module are connected with the signal processing module. The three-network integrated dual-mode intelligent set top box is compatible with traditional digital television direct transmission, on-demand unicast and other services and meanwhile has the network video playing, video call, game entertainment, family networking and other functions, and is suitable for efficiently developing data and internet services, capable of meeting three-network integrated service requirements, wide in application range and high in practicality.
Owner:GUANGXI NORMAL UNIV

Method for preparing high-concentration silica sol by using superfine silica powder

The invention relates to a method for preparing high-concentration silica sol by using superfine silica powder, which is characterized by comprising the following steps of: weighing 20-25 parts by mass of silica powder with the purity of 97-99 percent and the granularity of 500-2000 meshes, and adding 100-200 parts by mass of deionized water to heat at 50-60 DEG C for 10-30 minutes; then adding an aqueous sodium hydroxide solution with the mass percent concentration of 0.16-0.96 percent to the mixed liquid of the silica powder and water under stirring at 70-90 DEG C, and controlling a pH value of the reaction liquid at 8.5-10.0 and the time of whole stirring reaction for 6-8 hours; and then carrying out decompression and suction filtration after standing for 8-12 hours so as to prepare the high-concentration silica sol. The high-concentration silica sol with good property is prepared by using the superfine silica powder scrapped in organic silicon monomer production as raw materials, and the invention has simple process and high practicability.
Owner:SOUTHWEAT UNIV OF SCI & TECH

Tooth direction shaping gear hobbing processing technique

ActiveCN101085480AUniform tooth surface hardness differenceMeet the design requirementsGear teethEngineeringMachining process
The invention relates to the machining of gear teeth. The machining process comprises: Based on the drawing, it uses the hobber machining the gear to the inspection point A or D, computing the differential change wheel angle t based on the hobber differential mechanism with CB line actual spiral angle and gear and hobber parameter, loosening the differential change wheel, holding the change angle t, imitating the difference of machining small spiral gears, forming fixing point from the end surface fixing theoretical point C. It can get rid of the deficiencies of step, insufficient effective hardening and teeth surface hardness.
Owner:CRRC QISHUYAN INSTITUTE CO LTD

Polyurethane (PU) paint for decorating magnesium alloy surface

The invention belongs to the technical field of paint compositions, which solves the defects in wear resistance, weather resistance, exterior decoration and the like of the polyurethane (PU) paint for decorating the magnesium alloy surface in the prior art, and discloses a polyurethane (PU) paint for decorating a magnesium alloy surface. The polyurethane (PU) paint for decorating the magnesium alloy surface comprises PU base paint and PU surface paint, and the PU base paint comprises the following components: 25-40 parts of acrylic polyol, 8-15 parts of hydroxyl acrylic resin, 3-8 parts of nitro-cotton, 5-8 parts of coated aluminum paste, 5-15 parts of blocked curing agent, 0.5-2 parts of leveling agent, 1-3 parts of anti-settling agent, 0.01-0.05 part of drier and 25-45 parts of mixed solvent; and the PU surface paint comprises the following components: 20-30 parts of the acrylic polyol, 6-10 parts of the hydroxyl acrylic resin, 12-18 parts of polyester polyol, 1-5 parts of 1,4-butanediol, 10-20 parts of the blocked curing agent, 2-5 parts of transparent pigment, 0.5-2 parts of the leveling agent, 0.3-1 part of salt fog resistant additive, 0.01-0.05 part of the drier and 28-45 parts of the mixed solvent.
Owner:惠州市嘉淇涂料有限公司

Process for preparing ginsenosides Rh2 and Rh3 from stems and leaves of pseudoginseng root

The invention relates to a process for preparing ginsenosides Rh2 and Rh3 by using stems and leaves of pseudoginseng root as raw materials, which comprises the following technical flows: (1), extracting saponin from the leaves of the pseudoginseng root, namely cooking the stems and leaves of the pseudoginseng root with water for extraction, absorbing, eluting and concentrating to obtain a thin extract of the ginsenosides of the pseudoginseng root; (2), preparing diol saponins, namely absorbing, eluting, concentrating, drying and crushing the thin extract of the ginsenosides of the pseudoginseng root to obtain the diol saponins; and (3), acid hydrolysis, namely, performing acid hydrolysis on the diol saponins, absorbing, washing with water, eluting, concentrating and drying to obtain a mixture which contains the ginsenosides Rh2 and Rh3. The process of the invention is simple and feasible, high in purification rate and good in quality, and reaches industry standards.
Owner:YUNNAN HEIYAO PLANT TECH DEV

Mine's power grid electric leakage identification method based on the real component of the fault instantaneous positive sequence current

The invention discloses a mine's power grid electric leakage identification method based on the real component of the fault instantaneous positive sequence current. The method comprises the following steps: 1) obtaining, saving and synchronously updating the electric leakage signals; 2) receiving, analyzing and processing the electric leakage signals; 3) determining whether a power grid electric leakage occurs or not; 4) determining whether a power grid trunk electric leakage occurs or not; 5) protecting the power grid trunk electric leakage and outputting a power grid trunk electric leakage result; and 6) identifying the power grid electric leakage branch line, outputting the result, and protecting the power grid electric leakage branch lines. The invention is novel in design, and the phase sum mode value of the zero sequence current is used to determine the power leakage faults in trunk or branch line, which can overcome the problem that in the traditional leakage detection method, trunk fault can not be separated from the branch line fault. Through the amplitude of the real component of the fault instantaneous positive sequence current to tell a power grid electric leakage branch line, an obvious effect can be achieved for line selecting. In addition, the line selecting method is also very self-adaptive.
Owner:XIAN UNIV OF SCI & TECH

Polyethylene corrugated tubular product

The invention discloses a polyethylene corrugated tubular product. The polyethylene corrugated tubular product comprises the following components in parts by weight: 60 to 90 parts of polyethylene, 15 to 30 parts of fillers, 1 to 5 parts of a heat stabilizer, 0.1 to 1.5 parts of an antioxidant, 0.1 to 1.5 parts of a light stabilizer, 1 to 3 parts of a toughening agent, 1 to 5 parts of modified carbon powder, 1 to 10 parts of polymeric ester calcium, and 1 to 5 parts of silicon dioxide. Compared with the existing tubular product, the polyethylene corrugated tubular product is high in strength, strong in aging resistance and oxidation resistance, good in thermal stability and light stability, greatly improves the impact resistance of the tubular products, and meets the industry standard of construction projects.
Owner:昆山古加拉高分子科技有限公司

Method for efficiently regenerating spandex filament by dry spinning waste spandex filament

The invention discloses a method for efficiently regenerating a spandex filament by a dry spinning waste spandex filament, and belongs to the technical field of spinning. The method comprises the following steps: 1) carrying out curing processing on the waste spandex filament, heating at the environment of N2 gas and keeping the temperature; 2) smashing the waste spandex filament into waste spandex filament ultrashort fibers of which the fiber length is less than or equal to 30mm; 3) drying the waste spandex filament ultrashort fibers to enable the waste spandex filament ultrashort fibers to own a certain moisture content; 4) adding DMAC (Dimethylacetamide) and the waste spandex filament ultrashort fibers into a reaction still to obtain spinning stock solution with stable characteristics; 5) carrying out filtering, defoaming, ripening, spinning, twisting, oiling and winding on the spinning stock solution to obtain the finished product spandex filament. The regenerated spandex filament produced by the method has stable performance index and high spinning speed. According to the method, through ripening and control for the moisture content of the waste spandex filament, the stability of the waste spandex filament is improved so as to reduce a situation of fracture of wire and the like and effectively improve the spinning speed and the first-class rate of the spandex filament.
Owner:绍兴柯桥中兴化纤原料有限公司

A manufacturing method of a fine circuit of a flexible circuit board

ActiveCN109219251AAvoid a series of problems caused by poor uniformity of copper reductionFully contactedConductive material chemical/electrolytical removalCircuit precursor manufactureUv laserEtching
The invention provides a manufacturing method of a fine circuit of a flexible circuit board, which is characterized in that the method comprises the following steps: S1, adopting a thin copper material and cutting: the thickness of the selected copper material is 1-9um; S2. UV laser drilling; 3, remove glue residue; 4, black hole: before that black hole, plasma treatment is carry out first, and then the black hole is carried out; S5. Copper plating: The thickness difference of VCP plating line is 1- 5 u m, COV value is 3- 15%; S6. Film-coated exposure development: The thickness of the photosensitive film used is 10- 20. Mu. M, the photosensitive film is a wet film, and the minimum line space of the wet film is 10-20um; S7. Vacuum etching: during the etching process, the spray pressure is 2.4 Kg / cm2 and the down pressure is 2.2 Kg / cm2, and the etching speed is 3.0- 5.5 m / min; S8, Film removal. On the premise of ensuring good etching effect of the fine circuit, the invention starts to reduce the thickness of the plating layer in the pre-process of the circuit fabrication so as to improve the uniformity of the surface copper.
Owner:广州广合科技股份有限公司

Lipophilic intaglio compound printing ink and preparation method thereof

The invention relates to intaglio compound printing ink, in particular relates to lipophilic polyurethane printing ink and a preparation method thereof, and belongs to the field of printing ink. In order to overcome the technical defects of big smell, more residual solvent and poor resin fastness of the printing ink in the prior art, the invention provides the lipophilic intaglio compound printing ink and the preparation method thereof. The lipophilic intaglio compound printing ink has excellent early dry performance and tinting strength, is very suitable for automatic packaging and has a good industry popularization value, and the friction coefficient is between 0.6 and 0.7.
Owner:BAUHINIA VARIEGATA INK & CHEM (ZHONGSHAN) LTD

Preparation method of low density and high strength foam glass sintering at low temperature

The invention discloses a preparation method of low density and high strength foam glass sintering at low temperature. The glass powder is prepared from: by mass, SiO2 55.3-61.6%, Na2CO3 13.3-18.6%, CaCO3 9.0-11.6%, Al2O3 5-5.7%, MgCO3 3.56-5.8%, K2CO3 0.73-3.7%, Fe2O3 0.51-1.2%, BaCO3 0.53-1.1%, Na2SO4 0.47-0.9%, SrO 0.05-0.3%. The foam glass is prepared from glass powder, lithium carbonate using as a foaming agent 4-8 m%, and foam stabilizer 0-2 m% or foaming promoter 0-2 m%. The foam glass is prepared by sintering at low temperature of 725-775 DEG C and using a practical powder sintering method having convenient operation. The foam glass prepared by the invention has uniform pores, low density, and good mechanical properties, the properties such as porosity and water absorption can all reach the use standard, and the color is pure which is convenient to dye. In addition, the method can reduce the production cost, and can substantially improve the production efficiency.
Owner:TIANJIN UNIV

Multi-axis linkage winding machine for wrapping irregular pipe body

The invention belongs to the technical field of a winding machine, and provides a multi-axis linkage winding machine for wrapping an irregular pipe body. The multi-shaft linked winding machine comprises a foundation support, wherein the foundation support is connected with a clamping support by virtue of a moving apparatus, the clamping support makes the translation movement in a three-dimensionalspace relative to the foundation support by virtue of the moving apparatus, the clamping support is provided with a clamping portion in a rotating manner by virtue of a rotating apparatus I, the foundation support is provided with a winding frame in a rotating manner by virtue of a rotating apparatus II, a rotating shaft of the winding frame is perpendicular to a rotating shaft of the clamping support, the winding frame is provided with a winding disc in a rotating manner, and the winding disc is provided with a supporting apparatus for supporting a wound strip coil. By virtue of the technical scheme, the technical problems in the prior art that no winding machine for winding the irregular tubular article is provided can be solved.
Owner:河北海赞自动化科技有限公司

Power sourcing equipment PSE

The invention discloses power sourcing equipment PSE. The PSE comprises a PSE controller, a first power source, a detection module, a control module and a switching module. The detection module is used for sending a first detection signal to the control module if a voltage value of an output voltage of the PSE controller is changed from a set voltage value to zero. The control module is used for sending a switch-off instruction to the switching module if the first detection signal is received. The switching module is used for switching off the first power source and the PSE controller if the switch-off instruction is received. According to the embodiment of the invention, when the detection module detects that the voltage value of the output voltage of the PSE controller is changed from the set voltage value to zero, the PSE controller and the power source are switched off, so the power is prevented from being supplied to the PSE controller. When no PD (Powered Device) is connected with the PSE, namely when the PSE is standby, the PSE controller in the PSE does not consume electric energy, so the energy consumption is reduced, a standard of an industry is satisfied, and the user experience is improved.
Owner:ZHEJIANG DAHUA TECH CO LTD

Combined process using grasses as raw materials

The invention discloses a combined process using grasses as raw materials. The combined process is a whole-process reaction process comprising a preparation process of a high-grade paper slurry, a preparation process of a pulp for packaging paper, and a preparation process of a foliar fertilizer. The preparation process of the high-grade paper slurry mainly includes the process steps of: three reactions in three reaction tanks, four times of extrusion and pulping by a high concentration pulping machine; and the slurry with high yield is prepared. Pulp squeezing water obtained by first alkali addition softening, first pulp squeezing and / or first two times of pulp squeezing in the preparation process of the high-grade paper slurry is used as a raw material for the preparation process of thepulp for packaging paper; the pulp squeezing water containing a part of cellulose and unreacted agents is subjected to softening and grinding treatment to obtain the slurry for packaging paper. Squeezing water produced in the preparation process of the pulp for packaging paper is recovered and treated as a raw material for preparation of the foliar fertilizer. The combined process has the advantages of no black liquor discharge, water recycling, and energy conservation; therefore, the combined process is a green pulping process.
Owner:黑龙江如柏科技有限公司

Hot melt adhesive for steel plastic composite pipeline and production method of hot melt adhesive

The invention relates to a hot melt adhesive for a steel plastic composite pipeline and a production method of the hot melt adhesive. The hot melt adhesive comprises the following raw materials in percentage by weight: 95 to 98 percent of high-density polyethylene, 0.9 to 2.0 percent of maleic anhydride, 0.02 to 0.2 percent of peroxide, 0.09 to 0.5 percent of antioxidant and 0.9 to 4.0 percent of solvent. The production method comprises the following steps of: adding the high-density polyethylene and the antioxidant into a mixing machine; controlling the temperature of a stirring machine to be between 35 and 40 DEG C and stirring for 2 to 7 minutes; and granulating by using an intermediate-speed cutting combined double-screw extrusion granulator, wherein the extruding temperature is between 170 and 180 DEG C and the temperature of a machine head is between 190 and 200 DEG C. The hot melt adhesive is used for solving the bonding problem between a steel belt and plastic during production of the steel plastic composite pipeline. Based on detection required indexes according to the industrial standard CJ / T225-2006, the peeling strength meets the standard; the ring flexibility is qualified; and the product is qualified after passing a sunlight insolation test. All the indexes meet the industrial standard.
Owner:SHANDONG DONGHONG PIPE IND

Method and device for generating files of MDF format

The invention provides a method and device for generating files of an MDF format and relates to the field of recording of vehicle-mounted data. The method comprises the steps that S1, description information of a fixed part is established according to the MDF file format, the fixed part comprises the part from an initial IDBLOCK to CNBLOCK; S2, measured data received from an ECU is temporarily stored in a chain table according to a first preset period; S3, measured data in the chain table are converted in a double-precision floating-point format according to a second preset period, and converted data are filled into the MDF file format to obtain files of the MDF format; the second preset period is N times of the first preset period. The files of the MDF format generated through the method are simple in generating method, meet industrial standards, can be applied to relative cheap interface tools such as PCAN, and the cost of the generating device is lowered.
Owner:BEIJING BORGWARD AUTOMOBILE CO LTD

Reinforcing device of simple communication rod base station

A reinforcing device of a simple communication rod base station comprises a diagonal bracing system, a transverse rod system, an embracing hoop system, a base system and a cast-in-situ foundation system. The embracing hoop system is mounted on a pipe body of a base station tower body. The bottom of the diagonal bracing system is fixedly connected with the base system and then mounted in the cast-in-situ foundation system in an embedded mode. The upper part of the diagonal bracing system is connected with the embracing hoop system. The transverse rod system is connected with the diagonal bracing system and the embracing hoop system to support and firm the diagonal bracing system. The reinforcing device increases the load capacity of the simple communication rod base station, so that an original simple communication rod base station satisfies the requirements of a shared base station, existing resources are utilized very well, and the station construction cost is reduced.
Owner:电联工程技术股份有限公司

Noni fruit compound enzyme and production method thereof

The invention relates to a noni fruit compound enzyme. The noni fruit compound enzyme is characterized by being prepared from the following components in parts by weight: 60 to 100 parts of noni fruits, 10 to 20 parts of brown sugar, 2 to 5 parts of oligofructose, 0.1-0.2 part of bacteria, and 30 to 50 parts of mixed fruits; meanwhile, the invention further provides a production method of the nonifruit compound enzyme. According to the noni fruit compound enzyme and the production method thereof, fresh fruits, instead of fruit juice, are selected as fermentation raw materials; therefore, thenoni fruit compound enzyme prepared by the method is not added with water, preservatives, pigment and thickeners, active ingredients in the fresh noni fruits can be fully preserved, and the health ofa user is more facilitated. According to a process involved in the invention, a sterilization process is not used, but a process of implanting the bacteria twice for fermentation is adopted, so that the efficacy of a product can be effectively improved; the obtained noni fruit compound enzyme meets the national food safety requirements.
Owner:山东天随生物科技有限公司

Method for preparing fine aggregate with construction waste and application of fine aggregate

The invention discloses a method for preparing fine aggregate with construction waste and application of the fine aggregate. The method for preparing the fine aggregate comprises the following steps of crushing and cyclic screening, wherein the crushing steps comprises crushing the construction waste with a crusher to obtain crushed construction waste with a grain size smaller than 35 mm; the cyclic screening step comprises conveying the crushed construction waste through a feeding device to a roller screen arranged at the bottom for secondary screening to obtain fine aggregate with a grain size smaller than 5 mm, conveying the construction waste with a grain size greater than 5 mm to the crusher for further crushing, and conveying the re-crushed construction waste through a second conveying device to the roller screen for processing, and performing the process repeatedly to obtain the fine aggregate. The obtained fine aggregate can be applied to preparing high-performance non-fired perforated bricks. The method for preparing the fine aggregate with the construction waste is simple in process, low in production cost and capable of achieving waste recycling and reutilization of theconstruction waste.
Owner:广东道地中药有限公司

Anti-static floor tile

InactiveCN1587163ANot Hazardous by Electrostatic DischargeHas a layerConstruction materialPolymer scienceGranularity
Owner:缪澄洁 +1

Modularized medium-voltage solid soft starter cabinet

The invention discloses a modularized medium-voltage solid soft starter cabinet, which comprises a removable type hypobaric chamber arranged on the upper part of a cabinet body, a hyperbaric chamber arranged at the back part of the removable type hypobaric chamber, and a cable chamber arranged below the cabinet body, wherein a hypobaric chamber door is arranged on the front part of the removable type hypobaric chamber, one side of the hypobaric chamber is locked by using a bolt, and the other side of the hypobaric chamber is provided with a hinge; the front part of the cable chamber is provided with a cable chamber door, one side of the cable chamber door is fixed on a bending angle at one side of the cabinet body by adopting a screw lock; the cable chamber door can be opened by only dismantling the screw lock; the other side of the cable chamber door is provided with a hinge; an incoming wire and a outgoing wire of the soft starter cabinet are connected in the cable chamber; a fuse module is arranged in the cable chamber, the fuse module is connected with a rear copper bar by using a cable; and the fuse module can be installed or dismantled at any time according to the requirement of a user. Due to the adoption of a modular structure, the modularized medium-voltage solid soft starter cabinet has the advantages of convenience for transportation and maintenance and flexibility in installation.
Owner:NANCAL ENERGY SAVING TECH

High-power and large-angle light distribution LED (Light Emitting Diode) bulb

The invention relates to a high-power and large-angle light distribution LED (Light Emitting Diode) bulb, which comprises LED lamp beads, an LED lamp panel, an upper radiator and a lamp body radiator. The upper radiator and the lamp body radiator are respectively installed in the middles of the upper surface and the lower surface of the LED lamp panel. The circumferential surface of the upper radiator is inwards contracted from the top to the bottom to form an inverted-cone-shaped reflecting surface. The circumferential surface of the lamp body radiator is inwards contracted from the bottom to the top to form a cone-shaped reflecting surface. The LED lamp beads are arranged on the outer edges of the upper surface and the lower surface of the LED lamp panel and are close to the reflecting surfaces of the upper radiator and the lamp body radiator. The high-power and large-angle light distribution LED bulb has the advantages that since a unique LED lamp panel installation method is adopted, the heat dissipating area is increased; since the radiators are used as reflectors, the high-power heat dissipation and light distribution requirements are satisfied; since the scale dimension of the bulb is large, the light output angle is increased; and at the same time, the requirements on luminous flux and light distribution are satisfied and the industrial standards are met.
Owner:SHANGHAI DANGOO ELECTRONICS TARDING

Method for double decomposition method production of stearate and recycle of produced waste water

The invention relates to a method for double decomposition method production of a stearate and recycle of produced waste water. The method has a simple operation process, utilizes simple equipment, does not influence product quality, saves a production cost and a waste water treatment cost and has economic and social benefits. The method comprises 1, timely collecting stearate waste water in production, filtering the waste water and collecting the filtrate, 2, adjusting pH of the filtrate by an inorganic acid in a range of 5-9, 3, in re-production, recycling the adjusted collected filtrate, supplying water needed by production and carrying production, wherein the water supplement amount is 0-1 / 5 of the reactor total volume, and 4, repeating the processes 1, 2 and 3, after continuous production 5-20 times, feeding the filtrate into a sewage station and carrying out treatment.
Owner:HANGZHOU OIL & FAT CHEM +1

Method for synergetically treating fluorine-containing sludge in cement kiln

The invention provides a method for synergetically treating fluorine-containing sludge in a cement kiln. According to the method, the fluorine-containing sludge with water content of 40-80% can be synergetically treated in a cement kiln, and the sludge mixing amount accounts for about 1-5% of the total amount of the cement raw material. The method provided by the invention is characterized in that the fluorine-containing sludge with the water content of 40-80% is dried by afterheat tail gas of the cement kiln, so that the fluorine containing sludge can be safely treated in the cement kiln andthe performance indexes of the produced cement reach the national standard. According to the invention, since the fluorine-containing sludge is used as an available resource, the fluorine-containing sludge containing fluorides is safely treated and a great deal of land is saved.
Owner:杭州易辉环保科技有限公司

Preparation method for surface-printed button

InactiveCN105128551AObvious changeable color effectThere is no phenomenon of being burned yellowDuplicating/marking methodsOther printing apparatusColor effectPrinting ink
The invention provides a preparation method for a surface-printed button. The preparation method is characterized by comprising the following steps: firstly, carrying out pre-treatment on button blank to obtain an original button of the button; and carrying out UV flat-plate printing on the surface of the original button, obtained in the last step, of the button to obtain the surface-printed button. The preparation method adopts a UV flat-plate printing mode, namely a color flat-plate printing process, also named as a color stacking process to replace a current process for printing UV printing ink onto the button, so that the surface-printed button is obtained by virtue of a special paint-spraying and pre-treatment and post-treatment mode. The surface-printed button prepared by the preparation method can be printed at the surface to have different colors which can be matched to to form different patterns, and therefore, the surface-printed button has obvious changeable color effect.
Owner:ZHEJIANG WEIXING IND DEV

Voltage acquisition device with hardware protection function for rail transit

The invention relates to a voltage acquisition device with a hardware protection function for rail transit. The voltage acquisition device comprises a voltage acquisition chip, 12 voltage acquisition and equalization circuits, 12 voltage comparison circuits, an isoSPI daisy chain communication circuit, an alarm signal output circuit and a wide input power supply chip. By adopting the voltage acquisition device, a lithium battery system for rail transit can be effectively and safely monitored and managed, so that the lithium battery system for rail transit can be reasonably and efficiently utilized. Meanwhile, according to the special requirements of the rail transit industry, corresponding work is conducted on principle design and material type selection, so that the voltage acquisition device is suitable for the complex and severe operation environment of rail transit and meets the industrial standard of rail transit.
Owner:BEIJING BEIJIAO NEW ENERGY TECH CO LTD

Welding fixing support

The invention discloses a welding fixing support. The welding fixing support comprises a metal base bottom plate (1), quadrangular prism-shaped supporting brackets (2), a fixing plate (3), a side clamping table (4), a first positioning support (5), a second positioning support (6), a third positioning support (7), a fourth positioning support (8), a first side clamping plate (9), a second side clamping plate (10) and a positioning pin rod (11); at least one quadrangular prism-shaped supporting bracket (2) is arranged on the upper portion of the metal base bottom plate (1), the fixing plate (3) is arranged at the upper ends of the quadrangular prism-shaped supporting brackets (2), and the side clamping table (4) is arranged in the middle of one side of the upper portion of the fixing plate (3). According to the welding fixing support, the structure is simple and exquisite, use is easy, the occupied space is small, the welding stability and welding accuracy are guaranteed, the welding difficulty is reduced, the production efficiency is improved, the production cost is reduced, and the requirement on batched welding production of modern workpieces can be met.
Owner:徐明

Ta metallurgical by-product composite salt recycling method

The invention discloses a Ta metallurgical by-product composite salt recycling method. The method comprises the following steps: (1) after separating by-product composite salt produced during the Ta metallurgical process from Ta powder, the composite salt is rinsed with deionized water to remove the residue Na, and then the rinsed composite salt is crushed by a crusher and dried to obtain the treated composite salt; and (2) the treated composite salt is used as diluent, and is mixed with potassium fluotantalate based on certain proportion according to the process requirements and the mixture is taken to a furnace, and the Na is inlet for metallurgy process restoration to obtain the Ta powder. The by-product composite salt produced during the Ta metallurgical production process is used to produce the metallurgical-level Ta powder as the diluent, so that the recycling of the by-product composite salt is realized, the environmental problem caused by the by-product composite salt is avoided, and at the same time, cost is greatly saved. The method also has the advantages that the reuse of waste resources is realized, environmental pollution is reduced, direct yield of the Ta powder is effectively improved, and the Ta powder prepared according the recycling method meets the industry standard of metallurgical Ta powder.
Owner:ZHUZHOU HARD ALLOY GRP CO LTD

Circuit breaker control loop for phase selection opening and closing

The invention provides a circuit breaker control loop for phase selection opening and closing. The circuit breaker control loop comprises a measurement and control opening and closing loop, a manual closing and manual opening setting loop, a phase selection / non-phase selection opening and closing loop, a manual closing switching-in starting loop, a protection closing switching-in starting loop, a closing switching-out and holding loop, a jump position monitoring loop, a manual opening switching-in starting loop, a split-phase protection tripping switching-in starting loop, a split-phase tripping switching-out and holding loop, and a closing monitoring loop. According to the circuit breaker control loop for the phase selection opening and closing of the invention, phase selection, non-phase selection and protection opening and closing are carried out through an operation box self-holding loop outlet, so that the reliability of the outlet is ensured; phase-selection / non-phase-selection opening and closing operations can set and reset a closed relay, so that the accuracy of an accident total signal and reclosing logic is ensured; and protection tripping signals do not pass through a remote / local change-over switch of a circuit breaker, so that it can be ensured that the protection quantity is not remotely / locally controlled, the industrial standard is met, and the reliability of the circuit breaker is improved.
Owner:ANHUI ELECTRIC POWER DESIGN INST CEEC
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