156results about How to "Solving Diffusion Problems" patented technology

The invention discloses an SAPO molecular sieve, which has single crystals in sheet structure. The SAPO molecular sieve has moderate pore size, and can be used as a catalyst with long service life for olefin preparation from methanol. The invention also discloses a preparation method of the SAPO molecular sieve. The method us as below: activating a raw material of layered aluminosilicate, mixing the raw material with an phosphorus source and water, and homogenizing to obtain a wet masterbatch; drying and grinding the wet masterbatch to obtain a dry powder; and finally distilling the dry powder for crystallization, so as to obtain a raw powder for sheet SAPO molecular sieve. The method requires addition of a template agent, realizes low cost synthesis of SAPO molecular sieve and high additional value utilization of natural layered aluminosilicate, accelerates the rate of diffusion of various substances in the channels of the molecular sieve, increases the diffusion efficiency, and the advanategs of low equipment investment, simple operation and environment-friendliness.

The invention relates to a preparation method of styrene-acrylate copolymer painting emulsion for elastic painting of inner and outer walls of a building. The preparation of styrene-acrylate copolymer painting emulsion comprises the preparation method of styrene-acrylate seed emulsion and the preparation method of painting emulsion and the styrene-acrylate copolymer painting emulsion mainly comprises styrene, acrylate, silane coupling agent, emulgator, initiator, defoamer, pH adjusting agent, molecular weight regulator and water. By utilizing the strong surface effect of organic nano particles and designability of the distribution of inner and outer polymers of emulsion particles and combining the seed emulsion aggregation method and the phase-control dispersion film formation technology, the painting emulsion with high performance is produced by utilizing conventional raw materials; and the compactness, mechanical property and the outdoor aging resistance problems of a paint film can be successfully solved. The painting emulsion can be used as a film formation substance for the inner-outer wall emulsion paint of different buildings and also can be used for preparing anticorrosion metal anti-corrosive primer and varnish of wooden doors and windows.

The invention relates to a low-temperature co-fired ceramic tape casting material and a preparing method and application of the low-temperature co-fired ceramic tape casting material. The low-temperature co-fired ceramic tape casting material comprises, by weight, 35-50% of inorganic-phase components and 50-65% of organic-phase components. The inorganic-phase components include borosilicate glass powder and aluminum oxide ceramic powder, wherein the weight ratio of the borosilicate glass powder to the aluminum oxide ceramic powder is 2:3-3:2, and the borosilicate glass powder includes CuO which accounts for less than 3% of the power in weight. The organic-phase components include a solvent, an adhesion agent, a plasticizing agent and a dispersing agent, wherein the solvent is an alcohol-ester mixed solvent, and alcohol accounts for 20-70% in the mixed solvent in weight.

The method is suitable to display. The method includes steps: first forming a grid pole on a base plate; next, forming an insulating layer of grid pole above the grid pole; also forming a buffer layer between the grid pole and the base plate and / or between the grid pole and the insulating layer of grid pole. The buffer layer includes tantalum silicide, tantalum-silico-nitride, titanium silicide, titanium-silico-nitride, tungsten silicide, tungsten-silico-nitride or tungsten- carbide-nitride. Then, a semiconductor layer is formed above the insulating layer of grid pole, and source / drain poles are formed above partial semiconductor layer. The buffer layer covers the said grid pole.

The invention provides a device and a method for performing integrated purification on smoke. The device comprises an adsorption column. The adsorption column comprises a smoke inlet, a smoke outlet, a calcium hydroxide bed, an activated coke bed, a gas uniform distributor and an ammonia distributor, wherein the calcium hydroxide bed is located at the lower part of the adsorption column; the activated coke bed is located at the upper part of the adsorption column; the smoke inlet is located below the calcium hydroxide bed; the smoke outlet is located above the activated coke bed; the ammonia distributor is located between the calcium hydroxide bed and the activated coke bed; and the gas uniform distributor is located between the smoke inlet and the calcium hydroxide bed. The device for performing the integrated purification on the smoke is convenient in running and maintenance. The method for performing the integrated purification on the smoke is simple in process step. The integrated purification is realized by the device and the method.

The invention relates to a porosity echelon distribution pole piece, a preparation method and application thereof. The pole piece comprises a current collector, and a first film layer and a second film layer which are sequentially arranged on the current collector, and the porosity of the first film layer is lower than that of the second film layer. According to the method, a pore-forming agent isused for improving the porosity of the second film layer, and furthermore, a distribution window of the porosity is controlled in a multi-dimensional manner through accumulation of different particlesizes, cold pressing and low-temperature vacuum baking processes, so that the porosity of the pole piece is improved, the influence on the thickness of the pole piece is relatively small, and the pole piece has the characteristics of high industrialization degree, low cost and high yield and has a wide application prospect.

The invention provides a carrier rocket booster tank structure for biased concentrated force. The structure comprises a front short shell, a front tank bottom, a cylinder segment, a rear tank bottom and a rear short shell, wherein the five parts form the whole tank structure through circumferential welded seams and form a sealed container which can store a propellant and bear various loads; the front short shell is welded into a whole by a radial outer reinforced wall plate and two positive outer reinforced wall plates, and the cylinder segment is composed of a mixed inner reinforced wall plate with a concentrated force diffusion function and an oblique inner reinforced wall plate. The carrier rocket booster tank structure solves the bearing and diffusion problem of the biased concentrated force, the biased concentrated force is diffused through the tank structure to become uniformly distributed force, and a good mechanical environment is provided for a cabin behind a tank. The tank structure has the characteristics of high bearing capacity, high structure efficiency, good concentrated force diffusion effect, etc.

The invention discloses a high heat conduction substrate which comprises an aluminum base material. A connecting layer, an alloy buffering layer, an insulating layer and a conducting layer are sequentially arranged on the surface of the aluminum base material, wherein the conducting layer is formed by a first-stage conducting layer body and a second-stage conducting layer body covering the surface of the first-stage conducting layer body in a combined mode. A manufacturing method of the high heat conduction substrate includes the steps of (1) forming a layer of aluminum on one face of the alloy buffering layer to form the connecting layer for connecting the aluminum base material with the alloy buffering layer, (2) covering a layer of aluminum on the other face of the alloy buffering layer through physical vapor deposition or hot dipping, (3) converting the aluminum layer in the last step into an aluminum oxide insulating layer through the anodic oxidation method or micro-arc oxidation, (4) forming the first-stage conducting layer body on the surface of the insulating layer through the physical vapor deposition, and (5) forming the second-stage conducting layer body on the surface of the first-stage conducting layer body through the electrochemical deposition method. The high heat conduction substrate is stable in performance at the high temperature, cannot crack, and meanwhile solves the problem of metal diffusion of the buffering layer effectively.

The invention provides a laminated slice type voltage-sensitive resistor and the manufacturing method of the voltage-sensitive resistor, which is suitable for electronic enterprises, the resistor comprises a lower cover, an upper cover, a voltage-sensitive resistor unit and a terminal electrode, wherein the voltage-sensitive resistor unit is arranged between the upper and the lower covers, the upper and the lower covers are made of ceramic protecting materials, the voltage-sensitive resistor unit is composed of an internal electrode, voltage-sensitive resistor film and ceramic protecting film, wherein the internal electrode and the voltage-sensitive resistor film are overprinted, the ceramic protecting film is overprinted on both sides of the overprinted internal electrode and the overprinted voltage-sensitive resistor film. The manufacturing method comprises the processes of batching, pulping, tape preparing, printing, hot-water voltage-sharing, slicing, dumping, sintering, end capping, electroplating and the like. The invention adopts the ceramic protecting materials and the method of overprinting the voltage-sensitive resistor film to form a homogenous, compact and moisture-proof protecting layer on the other four surfaces except both ends of the voltage-sensitive resistor, thereby the product can be easily electroplated with nickel and tin, and the reliability of the welding of the product is greatly improved.

The invention discloses a preparation method of a sintered neodymium-iron-boron magnet. A solution coating method is adopted for mixing alloy magnetic powder with an organic turbid liquid or an organic solution containing heavy rare earth elements, so that the heavy rare earth elements uniformly coat the peripheries of magnetic powder particles; and then molding and sintering tempering treatment is carried out for effectively controlling the heavy rare earth elements on the surface layers and the crystal boundaries of crystal particles, so that the distribution uniformity and the diffusion depth of the heavy rare earth elements in the sintered neodymium-iron-boron magnet can be improved, and the magnetic properties such as the coercive force and the like can be improved.

The invention discloses a manufacturing method of metal grating on a silicon-based heterojunction cell. The manufacturing method includes: providing an N-type silicon chip, depositing a P-type amorphous silicon film layer on one face of the N-type silicon chip, and depositing an N-type amorphous silicon film layer on the other face of the N-type silicon chip; depositing conductive oxide layers on the P-type amorphous silicon film layer and the N-type amorphous silicon film layer, respectively; depositing a barrier layer on each conductive oxide layer; depositing a seed layer on each barrier layer; covering each seed layer with a photoresist layer, performing exposing through a mask, and forming a pattern of the metal grating after developing; electroplating electroplated layers on the seed layers of the pattern of the metal grating; etching off the parts, uncovered with the electroplated layers, of the photoresist layers, the seed layers and the barrier layers, thus forming a metal lamination; coating the surface of the metal lamination with a protective layer. The manufacturing method has the advantages that the cost is low, the process is simple and welding is easy.

The invention provides a long-service-life reference electrode applicable to the high-temperature and high-voltage corrosive environment. A core of the electrode is formed by hot pressed sintering, a shell of the electrode is composed of an upper end body, a middle end body and a lower end body, the middle end body is connected with the lower end body into a whole, an upper end cover is connected with the upper end body through threads, an isolation external member composed of a first fluororubber pad and first microporous ceramic is arranged between the upper end body and the middle end body, an anti-explosion pad is arranged between the upper end body and the upper end cover, one end of a high-temperature-resisting lead of the electrode penetrates through the upper end cover of the electrode and the anti-explosion pad to be connected with the core of the electrode, the core of the electrode is fixed in the upper end body by utilizing a positioning pad, the positioning pad and the anti-explosion pad are sealed by solid powder epoxy resin, a second fluororubber pad and a second microporous ceramic core are arranged between a lower end cover and the lower end body. The reference electrode can be used under the high-temperature and high-voltage environment, and the use effects of high-temperature resistance, high-voltage resistance, no need of maintenance and long service life are achieved.

The invention discloses a convolutional network error-correcting code coding and decoding method, which is characterized by, for a given communication network, obtaining a general convolutional network code under the condition no error according to information sink full rank conditions; for any mistake of a given set, calculating information sink equivalent error; and carrying out inversion to enable the error to be equivalent to the error of an information source end, and designing a convolutional network error-correcting code for correcting the error at the information source end. The network error is equivalent to the error of the information source end, so that the problem of error convolutional network diffusion can be prevented, and the method is simple; and convolutional error-correcting network coding has the advantages of high speed, high reliability, low time delay, and universality and the like.

The invention relates to a method for improving fabric ink-jet printing performance by using quaternary ammonium chitosan, belonging to the technical field of textile chemistry. The method is characterized by comprising the following steps of: respectively using dipping or padding manners to pre-process the fabric by using the water-soluble quaternary ammonium chitosan; then drying and jetting ink and printing. The improved pre-processing technique of the quaternary ammonium chitosan can obviously increase the ink-jet printing performance of the fabric, improve the fineness and color depth of the printing fabric, and increase printing color firming degree. Furthermore, the fabric has good hand feeling and antibacterial performance.

The invention provides a heat-preserving electrolytic tank. The heat-preserving electrolytic tank comprises a tank body, an upper tank part, an anodic carbon block, a gas collecting hood, a blanking pipe and a shell breaking hammer, wherein the anodic carbon block is fixed on an upper horizontal bus of the tank body; the gas collecting hood is fixed at the upper tank part; the blanking pipe is fixed in the middle of the gas collecting hood; the shell breaking hammer penetrates through the blanking pipe. The heat-preserving electrolytic tank is characterized in that movable heat-preserving tank hoods are arranged at the side top and on the side wall of the tank body; a heat-preserving cover plate is arranged at the middle top of the tank body and is connected with the gas collecting hood through a connecting piece. Existing heat-preserving coverage material such as oxidation alumina, a face shell block and an electrolyte block is replaced with the quickly-replaceable movable heat-preserving hoods and does not need to be frequently added, so that the labor strength is reduced, the working efficiency is improved, heat losses are reduced, and damage to electrolytic tank heat balance and material balance caused by the fact that heat-preserving coverage material falls into the electrolytic tank in the anode replacement and heat-preserving material adding processes is avoided; moreover, the environmental pollution can be greatly reduced, and the problem that the alumina cannot be quickly dissolved and diffused, which is caused by that fact blanking is performed only from a middle seam of a large pre-roasting aluminum electrolytic tank is solved.

The invention provides a hollow molecular sieve, and a preparation method and application thereof. The hollow molecular sieve has an external diameter of 50 nm to 10 [mu]m, an internal diameter of 20 nm to 9 [mu]m, and a specific surface area of 200 to 1000 m<2> / g; the shell of the hollow molecular sieve is composed of three layers of isomorphous molecular sieves with different Si / Al ratios; and the hollow molecular sieve may be one or more selected from a group consisting of a ZSM-5 type hollow molecular sieve, a beta type hollow molecular sieve and a Y type hollow molecular sieve. The hollow molecular sieve can effectively overcome the problem of diffusion in practical application; the size and shell thickness of the hollow molecular sieve can be regulated by changing a feed ratio and crystallization conditions; and a super-weak-solution-phase epitaxial growth method used in the invention is simple, has a wide application scope, can prepare three layers of isomorphous molecular sieve structures with different Si / Al ratios in a shell structure, is applicable to ZSM-5, beta and Y type molecular sieves and has low preparation cost.

The invention discloses a method for efficiently extracting tungsten, molybdenum and copper from molybdenum slag. Through the technology of pretreatment removal of S2-, alkali dissolution for tungsten and molybdenum leaching, tungsten and molybdenum separation through primary amine extraction, copper leaching through inorganic acid, extraction enrichment purification through a ketoxime and aldoxime compound extraction agent, and copper electrowinnig, efficient extracting of tungsten, molybdenum and copper from molybdenum slag is achieved, losing of valuable metal can be reduced, and heavy metal diffusion in slag can be solved.

The invention discloses a fireproof switch cabinet in the field of fire prevention of switch cabinets. The fireproof switch cabinet comprises a protection box, a ventilation window and a sliding groove are formed in the front end face of the protection box, a rack is slidably connected into the sliding groove, a first spring is fixedly connected to the lower end of the rack, and a stop block is fixedly connected to the upper end of the rack; a first square groove is formed in the side end face of the ventilation window, a fixing shaft is rotationally connected into the first square groove, anda gear and a shutter are fixedly connected to the circumferential surface of the fixing shaft; a storage groove is formed in the upper top end face in the protection box and internally and fixedly connected with a second spring, the upper end of the storage groove is in threaded connection with a sealing cover, and the lower end of the storage groove is hinged to an opening-closing plate. A double-thread lead screw is rotationally connected into the protection box and is in threaded connection with a first threaded block and a second threaded block, a supporting rod is fixedly connected to the front end of the first threaded block, a driven wheel is fixedly connected to the front end of the double-thread lead screw, the structure is simple, the manufacturing cost is low, and fire diffusion can be prevented only through simple operation.

The invention discloses a signal cancellation processing system and method based on an autocorrelation model. The system comprises an iterative noise reduction channel estimation circuit used for estimating characteristic response of a channel model in a mixed receiving signal on the frequency domain and outputting a frequency domain channel response estimated value; a self-interference reconstruction circuit connected with the iterative noise reduction channel estimation circuit and used for performing frequency domain reconstruction on the signal through a frequency unassociated reference method according to a local reference signal and the frequency domain channel response estimated value and outputting a frequency domain self-interference signal reconstruction value; and an adaptive interference cancellation circuit connected with the self-interference reconstruction circuit and used for performing autocorrelation eigenvector matching operation on the mixed receiving signal and thefrequency domain self-interference signal reconstruction value, and extracting a useful signal from the mixed receiving signal. According to the system and method, by adoption of the autocorrelationestimation of unassociated parameters of the signal features is accomplished by using the local reference signal and the mixed receiving signal, so that the noise can be effectively inhibited and theuseful signal is extracted.

The invention relates to the technical field of photoresist, and particularly discloses a sulfonium onium salt photoacid generator containing a beta-cineole structure, and a preparation method thereof. The photoacid generator includes an anion and a cation, the anion and the cation have structures represented by formulas shown in the description; and in the formulas, R represents an alkyl group, acycloalkyl group, a heteroalkyl group, or a heterocycloalkyl group, and P1, P2, and P3 each independently represent a hydrogen atom or an optionally substituted alkyl group having 1 to 12 carbon atoms. The photoacid generator prepared by the invention has good hydrophilicity, can improve the solubility in an organic solvent, and can effectively inhibit the diffusion of acids. The invention further provides the preparation method of the sulfonium salt photoacid generator containing the beta-cineole structure. Beta-cineole is used as a reaction initiator to react and then reacts with sulfoniumhalide to obtain the sulfonium salt photoacid generator containing the beta-cineole structure, so the preparation method is simple.

The invention discloses a reinforcement and concentration type cyclone pulverized coal burner. The cyclone pulverized coal burner comprises a primary wind channel, an inner secondary wind channel and an outer secondary wind channel coaxially arranged in sequence from inside to outside; a primary wind nozzle is formed in an outlet end of the primary wind channel; an inner secondary wind nozzle is formed in an outlet end of the inner secondary wind channel; an outer secondary wind nozzle is formed in an outlet end of the outer secondary wind channel; the inner secondary wind nozzle and the outer secondary wind nozzle are both conically expanded; the inner diameters of the inner secondary wind nozzle and the outer secondary wind nozzle are gradually increased in a primary wind airflow direction; and the inner secondary wind nozzle is positioned in the outer secondary wind nozzle. The cyclone pulverized coal burner solves the problem of primary wind pulverized coals dispersed to a secondary wind flowing area, realizes the concentration classified combustion of the pulverized coals, solves the problem of too early mixing of a secondary wind and primary wind-powder mixture, realizes the air classification combustion, and achieves the purpose of reducing the generation of NOX.

The invention relates to the technical field of photoresist, and particularly discloses a sulfonium onium salt photoacid generator containing a guaiol structure and a preparation method thereof. The photoacid generator includes an anion and a cation, the anion and the cation each having a structure in which R represents an alkyl group, a cycloalkyl group, a heteroalkyl group, or a heterocycloalkylgroup, and P1, P2, and P3 each independently represent a hydrogen atom or an optionally substituted alkyl group having 1 to 12 carbon atoms. The photoacid generator prepared by the invention has goodhydrophilicity, can improve the solubility in an organic solvent, and can effectively inhibit the diffusion of acid. The invention also provides a preparation method of the sulfonium onium salt photoacid generator, guaiacol is used as a reaction initiator for reaction and then reacts with sulfonium halide to obtain a sulfonium onium salt compound, and the preparation method of the sulfonium oniumsalt photoacid generator is simple.

The invention relates to an environment-friendly energy-saving tray of a gas cooker. The tray is made from a stainless steel plate (and a metal plate), formed by punching and blanking and assembled by rivet welding. The tray takes a basin concave shape and has two-layer heat preservation function, and the working face of the whole tray takes a half-arc shape; by making use of the thermotics theory, the tray has the best environment-friendly energy-saving effect; the tray is a responding product designed based on the thesis provided by the state that the whole people fully construct an environment-friendly energy-saving and conservation-conscious society, which is a new, long-term and important topic; the tray is an upgrading product of part of spare parts, and is mainly used for improving gas cookers and various popular old gas cookers used in most of families in the market so as to meet the technical performances described in the specification. The tray requires no special technical requirements.

The invention relates to a method for preparing cadmium telluride film, which belongs to the technical field of material plating. In the method, the distance from a cadmium telluride source to a substrate in a vacuum chamber of a near space sublimation device is controlled, the oxygen content in the vacuum chamber is controlled through regulating the air pressure of the vacuum chamber, and twice growth of the same phase crystal lattice of the cadmium telluride film is formed through twice heating, heat insulation and cooling processes carried out on the cadmium telluride source and the substrate at different vacuum degrees and temperatures, so the cadmium telluride film with large crystal grains and good tissue structures are formed. In addition, the appearance relying degree of the two growth modes on the substrate is greatly reduced through being compared with that of other growth modes, so the cadmium telluride film can be directly grown on the ordinary glass at low cost and high efficiency.

The invention discloses application of a three-dimensional ordered macroporous carbon nitride supported palladium catalyst in catalytic hydrogenation of styrene unsaturated copolymers. The preparationmethod comprises the following steps: by taking a three-dimensional ordered mesoporous core-shell structured SiO2 nanosphere as a template and cyanamide as a precursor, three-dimensional ordered macroporous carbon nitride (3DOM g-C3N4) is prepared through a thermal condensation assisted colloidal crystal template method; afterwards, the compound is used as a carrier to prepare a Pd / 3DOM g-C3N4 supported catalyst through a chemical reduction method. The obtained catalyst has a three-dimensional porous structure which is orderly arranged; the macroporous cavity is spherical; the defect of diffusion limitation of polymer macromolecules in micropores and mesoporous channels can be overcome; when the catalyst is applied to a heterogeneous catalytic hydrogenation reaction of styrene unsaturatedcopolymers SBR and SBS, a hydrogenated product with high quality and high hydrogenation degree can be obtained, so that the catalyst has important significance for development of heterogeneous catalytic hydrogenation of styrene unsaturated copolymers.

The invention discloses a method for the multiresolution anisotropic diffusion filtering real-time processing of ultrasonic images. Aiming at the characteristics of multiresolution anisotropic diffusion filtering image processing algorithms such as large calculation amount and low processing speed, the method relies on Intel hardware and development technology, adopts a blocking and clipping mask method, ensures the undistortionless of the image information, suppresses the speckle noises in the image, increases image processing speed, and is used in an ultrasound imaging system to optimize the processing speed of the display data of ultrasonic scan images.

A method of depositing a conformal coating on a porous non-ceramic substrate requires reactive gases to flow through the substrate so as to leave a conformal coating behind. The process can be used to leave a hydrophilic surface on the interior pores of the substrate, even when the substrate is of a naturally hydrophobic, e.g., olefinic material. The method can be used in a roll-to-roll process, or in a batch process. In some convenient embodiments of the latter case, the batch reactor and the conformally coated substrate or substrates can together go on to be come part of the end product, e.g., a filter body and the filter elements respectively.

The invention discloses an integrated fluidic chip for identification of a fruit fly type and a use thereof. The integrated microfluidic chip comprises specific primers for fruit fly type identification and a TaqMan-MGB probe. The invention provides a fruit fly type molecular identification technology utilizing the integrated fluidic chip. A test proves that the integrated microfluidic chip-based molecular identification technology realizes fast identification of a fruit fly type, has good specificity, high flux, a low cost and simple processes, realizes identification of a type of non-adult fruit fly or fruit fly adult residual body, provides a fast identification tool and technology for import and export plant quarantine and nationwide fruit fly epidemic monitoring, effectively prevents invasion and diffusion of dangerous fruit fly, protects agricultural production and ecological safety and promotes trade and economic development in China.

The invention discloses a method for preparing an ultra-shallow junction on the surface of a semiconductor chip through laser, which comprises the following steps of: leading the mixture of H2 and another gas at the speed with the lead-in gas flow capacity of 50-1000sccm under a vacuum condition, and doping the mixed gas onto the surface of the semiconductor chip when chip lattices are activated; using laser to irradiate the semiconductor chip to instantly increase the temperature of the semiconductor chip by 1000-1400DEG C, and finally forming the ultra-shallow junction on the surface of the semiconductor chip, further preferably, the instant increased temperature of the chip is 1200DEG C. The depth of the prepared ultra-shallow junction can be smaller than 30 nanometers, and the doping concentration can be adjusted according to specific requirements. The invention simplifies working procedures and shortens process time. Gas elements can be adjusted, being beneficial to adjusting the doping concentration according to the different purposes of the ultra-shallow junction. The lead-in gas flow capacity is controlled, being beneficial to forming a uniform atmosphere in a vacuum chamber and ensuring the uniformity of the prepared ultra-shallow junction.

The invention provides a lamination type piezoresistor network and a making method thereof, belonging to the field of electric elements. The lamination type piezoresistor network comprises a lower dielectric layer, a plurality of piezoresistor units, end electrodes and an upper dielectric layer, wherein the piezoresistor units are formed on the lower dielectric layer and mutually independent; the end electrodes are connected to both end parts of the piezoresistor units; the upper dielectric layer is combined with the lower dielectric layer attached by the piezoresistor units; and a piezoresistor further comprises an inner electrode attached on the lower dielectric layer and a piezoresistor film covered on the inner electrode. The lamination type piezoresistor network integrates the independent piezoresistor units into a whole, is convenient to use on the aspect of multiline overvoltage protection, enhances the installation density and the installation efficiency of the elements, reduces the integral machine cost and realizes the miniaturization.