81results about How to "Strong cost" patented technology

The invention discloses a method of manufacturing a flexible micro membrane surface stress biosensor based on a nano conductive material. Particularly, a simple method is used for combining the nano conductive material and a flexible substrate, and the sensitivity and the telescopic performance of the stress sensor are further improved. Firstly, a flexible material (such as PDMS) is used as a raw material to make a flexible template with a groove; then, the nano conductive material (such as carbon nanotubes or silver nanowires) is used for filling the groove in the template; electrodes are led out from two ends of the filled nano conductive material; and finally, a flexible polymer material (such as PDMS) is used for fixing the nano material and the electrodes at the upper layer, and the structure stability is enhanced (the step can be omitted according to actual demands). The method of the invention has the advantages that the process is simple; the cost is low; the controllability is strong; the manufactured flexible stress sensor based on the nano conductive material is high in sensitivity, high in stability and good in flexibility; and possibilities are provided for realizing miniaturization, low cost and batch production.

The invention discloses a triangular wave signal generator. The triangular wave signal generator comprises a clock circuit unit, a programmable logic controller unit, a DDS unit, an amplifier unit and an adder unit which are connected in sequence, the programmable logic controller unit is further connected with a JTAG interface unit, and the adder unit is further connected with a direct current reference voltage unit. The triangular wave signal generator uses the advanced high-speed digital signal processing technology and direct digital frequency synthesizer technology to overcome the disadvantages of narrow frequency range, complex circuit, various apparatuses, high cost, low independence, and low practicability and so on of an existing triangular wave signal generator.

The process of treating waste water containing metal complex includes: regulating pH value to 2-4 and adding H2O2, contacting with iron powder in a fluidized bed reactor to produce displacement reaction and complex eliminating reaction, adding alkali in a deposition tank one deposit metal ion, and separating supernatant and the lower precipitate. The process can prevent the aggregation and deactivation of iron powder in the reaction, and has greatly raised reaction efficiency, low cost and high waste water treating effect.

The invention relates to a fabric / fiber finishing solution for antibacterial and insecticide repelling, its use method and fabric / fiber product / paper product. The mass percentage formula of the fabric / fiber finishing solution is: 0.05-40% of insecticide / repellent; 0.05-20% of antibacterial agent; 5.00-35% of binder; and 0.025-5% of crosslinking agent. The method for using the fabric / fiber finishing liquid of the present invention can be selected according to the difference of the finishing fabric / fiber material, one of the padding method, the spraying method or the dipping method. The fabric / fiber product / paper product is obtained by finishing the fabric / fiber finishing liquid or / and the method of using the fabric / fiber finishing liquid of the present invention. The fabric / fiber finishing liquid and its products of the present invention have the advantages of high efficacy, strong adhesion, water washing resistance, can reach the WHO standard, low cost, good applicability, convenient use and popularization, and the like.

The invention discloses a method for preparing a sodium-ion battery negative electrode material with sodium alga acid as a carbon source. The method comprises the steps that sodium alga acid is dissolved in deionized water at first, the temperature is kept at 60-90 DEG C in the whole process, stirring is carried out, and even viscous liquid is obtained, wherein 0.8-20 g of sodium alga acid is dissolved in each 100 mL of deionized water; the obtained even viscous liquid is frozen and dried to obtain the spongy sodium alga acid with a loose structure; finally, the obtained spongy sodium alga acid is roasted in the inert atmosphere and cooled to room temperature after roasting is finished, dilute acid soaking is carried out, the sodium alga acid is washed with water and ethyl alcohol to be neutral through suction filtration, then, vacuum drying treatment is carried out, and the sodium-ion battery negative electrode material is obtained. The prepared sodium alga acid derivative carbon material is used as the room temperature sodium-ion battery negative electrode material, the problems that a bulk carbon material is low in battery capacity and serious in volume expansion effect can be solved, and the material has the advantages of being high in cycling stability and high in battery capacity.

The invention relates to an intelligent public transportation system based on communication and grid computing technology. It is characterized in that it uses the Internet and VPN technology to connect the dispatching room terminals of each bus line and thousands of computers sharing computing resources in the dispatching system form a "virtual supercomputer" sharing computing resources and information resources; each bus The computer in the team dispatching room calculates the "average speed between stops" of the bus on this line based on the real-time positioning information sent back by the buses in real time during the operation of each line, confirms the specific location of the bus, and will need to share the overall "Road average vehicle speed" is uploaded to the summary platform, and each team can read the dynamic road condition information such as congestion stations, congestion intersections, congestion bottleneck nodes and other relevant road sections related to the driving status of this line. It is a low-cost, high-precision, and reliable operation. , high efficiency and good stability, and easy to popularize intelligent public transportation system.

The invention provides a process for recycling copper through electrodeposition by treating scrap copper materials by adopting a cyclone electrolysis technology, belonging to the technical field of recycling copper from wastes containing copper. The process is characterized by taking various purchased wastes containing copper as raw materials, preliminarily screening and grinding the wastes, adding the materials to a dissolved copper leaching bath device to undergo continuous copper dissolving to obtain a copper sulfate solution, then filtering the solution with precision filter equipment, decoppering the obtained filtrate through cyclone electrolysis, scalding an obtained copper pipe with weak acid and then feeding the copper pipe into a product processing unit to process a standard copper plate. The process has the following beneficial effects: through portable or module assembly, the cyclone electrolysis bath and support equipment are convenient to install, dismantle and move; the solution circulates in a closed loop, thus avoiding emission of harmful gases; electrolytic deposition is carried out on the metals selectively and the copper can be better purified by applying the cyclone electrolysis technology; higher current density and current efficiency are ensured, fewer reagents are consumed, the production cost is lowered and the enterprise revenue is improved; and high efficiency and high purity electrolytic extraction is carried out on the solution, the recycled copper is the standard cathode copper and the total recycling rate is above 96%.

The invention relates to the technical field of conductive membranes, particularly to a nano-silver flexible conductive membrane and a preparation method thereof. The nano-silver flexible conductive membrane comprises a PET substrate layer, wherein corona treatment is performed on the surface of the PET substrate layer; a conductive coating layer which is arranged on the surface of the PET substrate layer comprises the following raw materials in percentage by weight: 50-75% of absolute ethyl alcohol, 2-5% of terpilenol, 1-3% of acetyl tributyl citrate, 2-8% of joint cement, 1-5% of polyethylene glycol 400, 2-3% of span 85, 1.5-3% of ethyl cellulose, 3-8% of silver powder of 20-40 nanometers, and 10-18% of silver powder of 150-450 nanometers. The nano-silver flexible conductive membrane, provided by the invention, has the characteristics of stable surface conductivity of the formed film, low resistivity, high light transmittance and strong adhesive force. The preparation process of the nano-silver flexible conductive membrane is simple and mature, coating equipment is simple, the operation is convenient, the cost is low, and the nano-silver flexible conductive membrane facilitates popularization and application.

The invention discloses a comprehensive sound characteristic experimental instrument, which is characterized in that a transparent circular tube is provided with electric heaters and a thermometer; one end of the transparent circular tube is provided with a speaker connected with an audio signal generator in the machine and the other end thereof can reflect sound waves, thus forming standing waves; the transparent circular tube is provided with a set of movable microphone combined devices; microphones are connected with a microphone signal amplifier; and the microphone signal amplifier is connected with an audio voltmeter. The experimental instrument can find the node positions of the standing waves rapidly and conveniently by changing the positions of the microphones, thus measuring the sound characteristics or demonstrating the standing waves. The experimental instrument can also display the frequency and strength of the environmental sound and can be used as the audio signal source. The experimental instrument overcomes the troubles that the existing sound velocity measuring instruments need to be equipped with signal sources and oscilloscopes externally and can not make experiments related to relation between the sound velocity and the temperature and air pressure, is low in cost, integrally designed and convenient and reliable to use, displays sound and light synchronously and can be used for sound velocity measuring experiments or physics demonstration experiments in colleges and universities.

The invention provides a field hardware equipment management and control system, comprising a preset sensor, which is used for collecting equipment monitoring data of the field hardware equipment in real time. The cloud server is used for data analysis of equipment monitoring data to judge whether the equipment monitoring data is abnormal or not; When the monitoring data of the equipment is abnormal, the position information of the abnormal point of the field hardware equipment is determined, the alarm prompt is generated, and the alarm prompt is sent to the equipment monitoring server. The device monitoring server is used for sending the maintenance work order information to the maintenance personnel mobile terminal according to the alarm prompt. When the equipment monitoring server receives the overhaul confirmation signal, each part re-executes the corresponding function until the equipment monitoring data is normal. The invention also provides a field hardware device management andcontrol method. The invention solves the technical problems that it is difficult to judge the position of the abnormal equipment in time and the intelligence degree is low in the monitoring and processing scheme of the abnormal operation of the existing hardware equipment.

The invention relates to a method of detecting evaporable carbonyl compounds in cigarette filters by the solid-phase extraction and capillary gas chromatography. The cigarette filter is added with the Hydrochloric acidified 2,4-dinitrophenylhydrazine solution, for vibrating and extracting, then the extracted liquid is moved to C18 solid phase extraction columnella, eluted by cyclohexane, and the elutriant analyzed by GC, DB-5MS capillary chromato bar is adopted. The volume of sample injection is 1MuL. N2 is used as carrier gas in splitless sample injection. The flow rate of carrier gas is 1-2.5mL / min and the temperature of injection port is 200-250 DEG C. FID detector and the temperature of detector is 250 DEG C. The heating process is to keep initial temperature at 100 DEG C for 0-1min and heating rate at 15-20 DEG C / min, to 200 DEG C for 5min, then the heat rate from 4-8 DEG C / min, heating to 250 DEG C, keeps the temperature under 250 DEG C for 10min, quantitative analysis is according to the peak area. The invention lowers the operation request and can eliminate interference of nontaget compound which can separate formaldehyde, butanone, acrolein, crotonaldehyde, n-butylaldehyde, acetone, acetaldehyde from the cigarette filters effectively and quantitative analysis the seven evaporable carbonyl compounds in the cigarette filter accurately.

The invention discloses a novel photovoltaic reserve power control method. The method comprises the steps that the voltage and current of a photovoltaic system are sampled, and a voltage value V(k) and a current value I(k) are obtained; an adjusting signal is sent according to the running state of a power grid to control work modes of the photovoltaic system, wherein the work modes include a maximum power point tracking mode and a reserve power control mode; in the reserve power control mode, the current photovoltaic output power P<pv> is adjusted to be P<limit> below MPP, and the value of theshort-circuit current I<sc> is calculated; the value of the maximum power point current I<mpp> is obtained; according to photovoltaic output characteristics, the maximum power point voltage V<mpp> isobtained; P<avai> is obtained, and a work point is adjusted according to the photovoltaic reserve power deltaP. By means of the method, the photovoltaic maximum output power can be predicted accurately in real time, and the change of the photovoltaic reserve power can be quickly adjusted.

The invention relates to a preparation method of a solid proton conducting material having a wide working temperature range and the solid proton conducting material (a metal organic framework material) having the wide working temperature range prepared by the method. The method comprises the following steps: firstly, synthesizing a functional ligand having an amphoteric group; secondly, generatingreaction between the functional ligand and ZrCl4 in a high-pressure kettle to obtain a metal organic framework material MOF-MIMS; finally, adding protonic acid for powerful grinding to obtain ionic liquid-modified metal organic framework material. The preparation method disclosed by the invention is simple and high in controllability; the protonic acid is quantitatively dropwise added by measuring the size of a pore of a metal organic framework by measuring gas adsorption, so that a fuel cell proton exchange membrane material loaded with the proton acid in an ideal proportion is obtained. Bythe use of the ionic liquid-modified metal organic framework to prepare the fuel cell proton exchange membrane material, the cost is low, and the cycle performance is high. Furthermore, the material is excellent in conductivity without water within a relatively wide temperature range of -40 to 150 DEG C.

The invention discloses a double-end-electrified multi-phase alternating current motor variable-frequency control device, which comprises a multi-phase alternating current motor, wherein the m head ends and the m tail ends of the stator winding of the multi-phase alternating current motor are led out to respectively connect with a multi-phase univertor, and the multi-phase univertor is formed by a direct current power supply, a filter capacitance, a multi-phase inverter and a variable-frequency controller, and the phase number m of the multi-phase alternating current motor is equal to that of the multi-phase inverter, wherein m>=5. The double-end-electrified multi-phase alternating current motor variable-frequency control device of the invention not only can realize large power by using a power electronic component with limited single-tube capacity in a larger range, but also has higher reliability as having redundancy on phase units and a system.

The invention relates to the technical field of PBT plastic modification, in particular to a low-cost high-CTI high-GWIT flame-retardant reinforced PBT composite material and a preparation method thereof. The composite material includes, by weight, 40-52 parts of PBT resin, 14-25 parts of a halogen-free composite flame retardant, 25-30 parts of glass fibers, 1-5 parts of a toughening agent, 0.1-0.5 part of an antioxidant and 0.5-1 part of other processing aids. The halogen-free composite flame retardant is prepared by compounding a metal phosphate flame retardant, an organic phosphate flame retardant and an inorganic flame retardant. The halogen-free flame-retardant reinforced PBT engineering material has good mechanical properties and flame-retardant properties, high CTI (600V) and high GWIT (with the initiation temperature of glowing filament being 800 DEG C, without combustion during the whole process), and is environmentally friendly, and good in processing performance. In particular, the halogen-free composite flame retardant is low in cost, has a price 40-50% lower than the price of similar imported flame retardants, and has great market competitiveness.

The invention relates to a method for preparing fluorescent silver nano-clusters. The method mainly solves the problems that in an existing method for preparing fluorescent silver nano materials, preparation processes are complex, production cost is high, and needed reagents are prone to producing toxic effects on the environment. The method comprises the following steps that firstly, a certain amount of silver salt and a certain amount of sodium oleate are respectively dispersed in solvent water; secondly, the two solutions are mixed and stirred for a certain period of time and then placed on a constant temperature magnetic stirrer to be heated for a certain period of time after becoming even; thirdly, the reacted solutions are filtered, solid matter is removed, and the fluorescent silver nano-clusters are obtained. The fluorescent silver nano-clusters prepared with the method have good dispersity; besides, the method is simple, low in cost and environmentally friendly, and is a scientific method for preparing the fluorescent silver nano materials at low cost. The method is applied to the chemical engineering field.

The invention discloses a measuring device and method for the height of melt of an aluminum electrolytic cell and pressure drop of the furnace bottom. The measuring method comprises the steps of proposing derivation processing on potential data based on the huge difference among the specific resistance of air, the specific resistance of aluminum liquid and the specific resistance of electrolyte; determining an air-electrolyte interface and an electrolyte-aluminum liquid interface by analyzing a potential-displacement phi (s) curve and a potential change rate-displacement phi' (s) curve, and further calculating the height of the melt and the pressure drop of the furnace bottom. By means of the measuring device and method for the height of the melt of the aluminum electrolytic cell and pressure drop of the furnace bottom, automatic, efficient and accurate measurement of the height of the melt of the aluminum electrolytic cell and pressure drop of the furnace bottom is achieved, the automation degree is improved, the labor amount of workers is reduced, a process parameter detection result can serve as a control signal source of a cell control machine to be directly fed back to a control system to improve the control level of the cell control machine over the electrolytic cell.

The invention discloses a microbial strain for treatment of heavy metal contaminated soil, a screening method and application thereof. The screened microbial strain is Bacillus subtilis, and the preservation number is CCTCC NO:M 2017832. The microbial strain is inoculated into a medium for culture to a logarithmic growth period so as to obtain a bacterial liquid; and adding the bacterial liquid into the heavy metal contaminated soil, and the substances are mixed evenly to complete treatment of the heavy metal contaminated soil; or subjecting the bacterial liquid to vacuum freeze drying, then adding the treated bacterial liquid into soil, and mixing the substances evenly to complete treatment of the heavy metal contaminated soil; and immobilizing cadmium and chromium in the contaminated soil by passivation to reduce the bio-availability of cadmium and chromium and the absorption and utilization of cadmium and chromium by plants, thus reaching the purpose of remediating contaminated soil.

The invention provides a method and device for producing micron-sized superfine iron powder through regenerative iron red. The method includes the steps that protective gas is injected into a reduction furnace tube, the regenerative iron red recovered in the cold rolling and acid pickling processes serves as a raw material, reducing gas is injected in the reverse direction after the raw material is conveyed to the reduction furnace tube, the raw material and the gas make sufficient contact at the heating section in the reduction furnace tube by rotating spiral blades in the reduction furnace tube, and the regenerative iron red is reduced to micron-sized superfine Fe, and Fe is output and stored through an airflow classifier after reaction. The produced micron-sized superfine iron powder is good in performance, control is easy, continuous production can be achieved, and the device is simple in structure and low in cost.

The invention relates to a soil heavy metal pollution treatment technology, and concretely relates to a soil heavy metal deactivator, and a method using the soil heavy metal deactivator to deactivate and repair soil heavy metal pollution. The soil heavy metal deactivator comprises, by weight, 30 parts of peanut shells, 15 parts of red pine needles, 10 parts of sepiolite, 10 parts of fly ash, 5 parts of chitin, 3 parts of sodium metasilicate pentahydrate, 0.4 part of sodium tripolyphosphate, 0.1 part of choline chloride, 1.2 parts of a microbial inoculum and 0.05 part of quicklime. The soil heavy metal deactivator can effectively reduce the heavy metal content of plants to achieve the deactivation and repairing purposes.

The invention provides a low-temperature salt bath carbonitriding agent and application of the low-temperature salt bath carbonitriding agent to piston rod surface treatment and belongs to the field of piston rods. The carbonitriding agent is low in treatment temperature, the temperature ranges from 450 DEG C to 500 DEG C, time is short and ranges from 40 min to 60 min, a porous layer is thin, the thickness of the porous layer is smaller than or equal to 5 microns, and meanwhile the hardness of a workpiece can be greatly improved. The low-temperature salt bath carbonitriding agent comprises, by weight percent, 35%-38% of urea, 10%-12% of thiourea, 20%-24% of melamine, 10%-12% of potassium hydroxide, 10%-12% of lithium carbonate, 10%-14% of sodium carbonate and 1% of sodium fluoride. The low-temperature salt bath carbonitriding agent can be used for piston rod surface treatment.

The invention discloses a denitration catalyst used in a waste incineration power plant. The catalyst is prepared from the following raw materials in parts by weight: 70-75 parts of active carbon, 10-12 parts of TiO2, 1-2 parts of copper salt, 3-5 parts of ferric salt, 3-5 parts of cerium salt and 6-8 parts of a curing agent. The invention also discloses a preparation method of the denitration catalyst, and the preparation method comprises the following steps: pretreating active carbon; preparing TiO2 slurry; preparing mixed slurry; and drying and roasting the mixed slurry to prepare the denitration catalyst. Compared with the prior art, the denitration catalyst disclosed by the invention has the advantages that the stability and catalytic performance of the catalyst are improved, the specific surface area of the catalyst is greatly enlarged, the reactivity of the catalyst is improved because the porous structure of dried and roasted active carbon is well developed, and the denitration efficiency is enhanced. In addition, due to the addition of a rare-earth element, cerium, the denitration catalyst is high in poison tolerance and quite applicable to the waste incineration power plant, and furthermore, the service life of the catalyst is greatly prolonged.

The invention discloses a preparation method of a high-temperature proton exchange membrane material and application of the material. Dibasic ionic liquid is packaged in channels of a metal-organic framework, and accordingly the fuel battery proton exchange membrane material is synthesized. The preparation method is high in controllability, the sizes of the channels of the metal-organic framework are measured by measuring gas adsorption, a certain amount of dibasic ionic liquid is dropwise added, and the high-temperature proton exchange membrane material in a fuel battery loading the dibasic ionic liquid in an ideal proportion is obtained. The high-temperature proton exchange membrane material in the fuel battery is prepared by filling the metal-organic framework with the dibasic ionic liquid, cost is low, circulation performance is good, and electric conductivity is excellent under waterless and medium-and-high-temperature conditions. The obtained composite material is safe and harmless to the environment, and meets the novel material application requirement in clean energy and environment sustainable development.

The invention discloses a microbial strain and a screening method thereof and an application in treating heavy metal polluted soil. The screened microbial strain is bacillus subtilis, the preservationnumber of which is CCTCC NO: M2017830. The application comprises the following steps: inoculating the microbial strain in a culture medium to be cultured to a logarithmic phase to obtain a bacterialsolution; adding the bacterial solution into the heavy metal polluted soil to be uniformly mixed to treat the heavy metal polluted soil; or adding the bacterial solution which is vacuum-frozen and dried into soil to be uniformly mixed to treat the heavy metal polluted soil; and fixing cadmium and copper in the polluted soil by means of passivation, wherein the bio-availability of cadmium is reduced and adsorption and utilization of cadmium by plants are reduced, so that the purpose of repairing soil is achieved.

The invention relates to a solid household refuse pyrolysis and gasification power generation device. The solid household refuse pyrolysis and gasification power generation device is characterized by comprising a feeding tank (1), a magnetic separation conveying belt (2), a pulverizer (4), a spiral feeding machine (7), a gasifier (8), a cyclone removal device (21), a pressurizing induced draft fan (22), a water seal type dust removal explosion prevention device (23), a secondary decoking and cooling tower (24), a ternary decoking and cooling tower (25), a gas test fire head (26), a gas storage cabinet (31), a gas turbine generator (32) and a dust remover (33) which are serially connected with one another by pipes. The solid household refuse pyrolysis and gasification power generation device is high in universality of household refuse; requirements on household refuse composition on original refuse treatment are low; and complicated original refuse treatment procedures are reduced. The solid household refuse pyrolysis and gasification power generation device is simple to operate and use, stable in thermal efficient, high in gas yield and high in safety, and is harmless treatment complete equipment which can treat household refuse harmlessly, and further can carry out gasification by the household refuse secondarily.

The invention, which relates to the technical field of micro-connection, provides a method for preparing a low-temperature interconnected high-temperature in-service joint by using a single-phase nanosilver-copper alloy solder paste. The method comprises the following steps: step one, placing a nano inter-metallic compound solder paste on a substrate, completing an alignment process of a to-be-soldered component, and applying a pressure; and step two, placing the system in a reflow furnace, and implementing a preheating phase, a heat preservation phase, a re-flowing phase, and a cooling phaseto complete volatilization of organic matters, uniform sintering among single-phase nano-alloy particles, and wetting and interfacial reaction of a bonding pad. According to the invention, with the single-phase nano silver-copper alloy particles, the powerful driving force is provided for the sintering process based on the excellent surface activity property of the nano particles; the low-temperature connection that is compatible with the traditional reflow soldering process and has the melting point far lower than the melting point of the block is realized; and an excellent joint with the high anti-oxidation, anti-electromigration and anti-electrochemical migration capabilities is formed. The high-temperature service of the low-temperature connection is realized while the compatibility with traditional process is high and the production efficiency is high.

The invention discloses a wheat low temperature-resistant conditioning agent and an application method thereof. The wheat low temperature-resistant conditioning agent comprises the following components in parts by weight: 18-27 parts of melatonin, 13-19 parts of potassium humate, 12-17 parts of a-naphthylacetic acid, 8-14 parts of jasmonic acid, 6-14 parts of phytohormone brassinolide, 3-7 parts of cytokinin, 2-8 parts of an antifreeze, 0.3-0.7 parts of antibacterial peptide, 1-5 parts of a dispersant, and 20-30 parts of water. The wheat low temperature-resistant conditioning agent has the beneficial effects that the conditioning agent takes water as a medium, has obvious environment benefit and social benefit, can increase the security; protects a cell membrane, stabilizes the structure of biomacromolecules such as antioxidant enzyme, enhances capability for effectively removing ROS by cells, reduces intracellular water potential and ice point, and enhances the anti-pathogen capability of the wheat; the active ingredient source is abundant, the active ingredient is regenerable, is easily degraded in natural environment, has the characteristics of low cost and convenient usage, and conditioning agent has the advantages of easy popularization and application.

The invention discloses a switching power circuit for a three-phase intelligent electric energy meter. The switching power circuit comprises a distributed load regulation device (1), a half-wave rectification and filtration device (2), a zero-line, over-voltage and electromagnetic interference monitoring and protection device (4) and a load control device (5), wherein the distributed load regulation device (1) is supplied with power by a three-phase four-wire power supply (6); the distributed load regulation device (1) is connected with one end of the half-wave rectification and filtration device (2); the other end of the half-wave rectification and filtration device (2) is output to a direct current (DC) / DC converter (3); the DC / DC converter (3) is connected with an electric energy meter functional circuit (7); one end of the zero-line, over-voltage and electromagnetic interference monitoring and protection device (4) is connected with the half-wave rectification and filtration device (2) and the DC / DC converter (3); the other end of the zero-line, over-voltage and electromagnetic interference monitoring and protection device (4) is connected with one end of the load control device (5); and the other end of the load control device (5) is connected with the distributed load regulation device (1). The switching power circuit for the three-phase intelligent electric energy meter has the advantages of low cost, high reliability and effective restraint capacity of strong electromagnetic interference and pole-end harmonic current interference.

The invention discloses a hydraulic crushing bucket. The hydraulic crushing bucket comprises a main body. A joint is welded on the main body. The main body can be reliably installed on a loader or anexcavator through the joint. The main body comprises a crushing mechanism and a transmission mechanism. The crushing mechanism comprises a fixed jaw plate and a movable jaw plate. The fixed jaw plateis fixedly connected to the inner side of a main body bottom frame. The movable jaw plate is arranged on the other opposite side of the fixed jaw plate, and the movable jaw plate and the fixed jaw plate form a big-end-up crushing space. The transmission mechanism comprises a hydraulic motor, an inertia wheel, an eccentric shaft and an installation fixing piece. The hydraulic motor rotates to drivethe rotation of the eccentric shaft so as to drive the reciprocating motion of the movable jaw plate. By the adoption of the scheme, the crushing bucket can be reliably installed on an excavator or aloader for use, can carry out crushing work in any occasion and is small in size, light in weight, convenient to move, large in crushing force, easy to operate and low in cost.

The invention relates to a lamp, in particular to an LED lamp with an efficient heat dissipation function. The LED lamp comprises a shell, a light guide module and a light-emitting module; the light guide module and the light-emitting module are fixedly arranged in the shell and are both with heat dissipation structures; the light guide module comprises a first sapphire substrate and a reflecting layer, and the light-emitting module comprises a second sapphire substrate, a light filtering layer, a metal conducting layer, a light-emitting module group and a transmission enhanced layer. The sapphire printed circuit board LED lamp and the manufacture method thereof have the advantages that a sapphire printed circuit board LED lamp with the efficient heat dissipation function, die bond, wire bonding and dispensing are conducted on the sapphire printed circuit board directly through arranging the heat dissipation structures on the sapphire printed circuit board, and the manufacture of the LED light-emitting module is achieved, so that thermal resistance generated from cemedin which is used in traditional printed circuit boards is eliminated, and heat dissipation efficiency is improved; light filtering layer is arranged on the printed circuit board, so that luminous flux of the light-emitting module group is guaranteed, light leak is prevented, and the light is kept in a highlighting mode; the structure is simple, and the cost is low.