52results about How to "No ablation" patented technology

The invention relates to a lightning protection and especially relates to a 10-35kV overhead transmission line constraint space injection gas arc extinguishing lightning protection gap apparatus which is suitable for a 10-35kV overhead transmission line. The apparatus is installed in parallel on two ends of a line insulator string to protect a flash-over voltage between gaps to be less than the voltage of a protected insulator string so that the apparatus is punctured prior to the protected insulator string when the power transmission line is suffered from lightning stroke. During disruptive discharging, a signal acquisition device automatically senses a lightning current signal and triggers a high speed injection gas generation apparatus. A high speed injection air flow is instantly generated so as to carry out great impact on a follow current arc in a constraint space along a vertical direction, and carry out cooling till the arc is quenched. According to the invention, a structure is simple, installation and maintenance are convenient. Through using the apparatus of the invention, when the line is suffered from the lightning stroke, a lightning current can be rapidly led to the ground and simultaneously a high speed airflow quenching power frequency follow current is generated so that electric equipment can be effectively protected and power supply reliability is increased.

The invention relates to a lightning protection device and especially relates to a multi-interspace self-expanding strong-airflow arc extinguishing lightning protection device used in power transmission lines with different voltage grades. The device is installed in parallel on one side of a line insulator substring. Insulation strength of a main discharge protection gap and an auxiliary discharge gap is less than the insulation strength of the protected insulator substring so that an overvoltage generated when lightning stroke is generated on the line punctures the protection gap preferentially. When the protection gap is punctured so as to discharge, high temperature arc is generated in the auxiliary discharge gap, air is rapidly heated and expanded in a semi-closed space of the auxiliary discharge gap so that the arc is elongated and is erupted along a gas guidance hole. Simultaneously, a signal acquisition device automatically collects signals and starts a gas generation apparatusso as to instantly generate high speed airflow to extinguish the arc. The protection device of the invention has a simple structure. Installation is convenient. When the lightning stroke is generatedon the line, the lightning current can be rapidly leaked to the ground and simultaneously the high speed airflow is generated to extinguish the arc. Therefore, electric power equipment can be effectively protected and power supply reliability can be increased.

The invention discloses a seamless splicing method for a circular metal mould tape with an optical micro structure aggregate on the surface. The seamless splicing method for the circular metal mould tape with the optical micro structure aggregate on the surface is characterized in that a peelable adhesive tape is adopted for sealing and pasting a seam in the front, a room temperature cured A/B structure conductive adhesive is used for packing the back of the seam, and a method that the seam is fixed by metal sheet and two-component structural adhesive from the back is adopted for treating the seam; meanwhile, an electroforming process is combined, and finally a super large circular tape metal template is formed. The seamless splicing method for the circular metal mould tape with the optical micro structure aggregate on the surface has the advantages that the seam is smooth and ablation-free and mechanical strength can be guaranteed.

The invention discloses a thin resin wheel. The thin resin wheel is 105mm to 125mm in diameter and 0.8mm to 1.0mm in thickness. The components of the thin resin wheel comprise white corundum, monocrystalline corundum, phenolic resin powder, resorcin-formalin, light calcium carbonate powder and potassium fluoroaluminate powder, are simple and easy to allocate, have no special requirements for forming process and can be produced by conventional process. The thin resin wheel manufactured is narrow in cuts, long in cutting service life, quick to cut and low in generated cutting heat, so that cut section has no defects such as erosion, burrs and flanges.

The invention discloses an electrical etching machine of a metal cutter template, which comprises a machine frame, an upper electrode, a lower electrode and an electrolyte collecting tank. A translation frame is further matched on the machine frame in moving mode, the upper electrode is installed and connected onto the translation frame, at least two liquid outlet devices communicated with a liquid supplying device are arranged on the translation frame and beside the upper electrode, a liquid outlet of each liquid outlet device faces toward the bottom of the upper electrode and toward a space under the bottom face of the upper electrode, an insulating workpiece support piece is arranged on the upper surface of the lower electrode and provided with a liquid passageway, or a plurality of insulating workpiece support strips are arranged on the upper surface of the lower electrode, the gaps between adjacent workpiece support strips form the liquid passageway, a liquid flow passage communicated with the upper surface of the lower electrode is arranged inside the lower electrode or on the lateral face of the lower electrode, and the liquid flow passage is communicated with the liquid passageway. The electrical etching machine generates no erosion and can meet the metal cutter template etching requirements for large etching depth, high evenness and high accuracy.

The invention relates to a lightning protection device, in particular to a jet stream arc extinguishing and lightning protection gap device in a constraint space of transmission lines with various voltage levels. The device is installed on the two ends of a circuit insulator chain in parallel to ensure that the flash over voltage between gaps is smaller than that of the protected insulator chain, so as to be punctured prior to the protected insulator chain when the transmission lines are subjected to lightning stroke, a gas generation material in the constraint space is severely heated by high temperature electric arcs to generate high pressure gas in the case of disruptive discharge, and meanwhile, a signal collecting device automatically collects a signal and starts a jet gas generating device to instantaneously generate high speed gas flow so as to impact, cool and extinguish the electric arcs along the longitudinal direction. The device disclosed by the invention is simple in structure and convenient in installation, and the device can quickly discharge the lightning current to the ground and simultaneously generate high speed gas flow to extinguish the power-flow current when the transmission lines are subjected to lightening shock, so that the power equipment is effectively protected and the power supply reliability is improved.

The invention relates to a motor, especially a vacuum cleaner motor. The motor includes a housing, a stator assembly and a rotor assembly. The housing includes a front end cover and a rear end cover, and the front end cover and the rear end cover are fixed by screwing; The rotor assembly includes the rotor shaft, permanent magnetic steel, fixed magnetic steel sleeve, rotor punch and bearings. The two ends of the rotor shaft are equipped with bearings, the middle of the rotor shaft is equipped with rotor punch, and the side of the rotor punch is bonded with permanent Magnetic steel, fixed magnetic steel sleeves are provided at both ends of the rotor punching sheet; the stator assembly includes stator core, stator winding and Hall induction plate, the stator winding is wound on the stator iron core, and the Hall induction plate is fixedly installed at the rear end On the inner wall of the cover; the stator assembly and the rotor assembly are installed in the housing; the invention not only has a good heat dissipation effect, but also has no sparks and no ablation during the working process, can work in relatively harsh and dangerous environments, and has small friction and Low noise, long life, low energy consumption, performance is superior to ordinary DC motors.

The invention relates to the field of laser processing, and concretely relates to a laser processing control method and device, and a computer storage medium. The method comprises the following steps:setting extension tracks for processing tracks forming corners in a to-be-processed pattern; and controlling a laser to move along the extension tracks to make the laser start to move along a processing track according to a preset processing speed. Extension type motion processing is carried out on the inflection point of the processing track, so that the problem of poor processing quality causedby sudden change of the motion speed of laser light at the inflection point of the graph in the laser processing process is solved.

The invention relates to a multi-layer multi-wing reconnection type electromagnetic emission device. The multi-layer multi-wing reconnection type electromagnetic emission device is designed as a structure of two layers and eight wings or a structure of three layers and twelve wings. According to the structure of the two layers and the eight wings, the corresponding two wings are evenly and fixedlyconnected to each side of the upper, lower, left and right sides of a cylinder or a square barrel to form a projecting armature, one driving coil is disposed between the two wings of each side, two driving coils are disposed on the outer sides of the two wings, and the distances between the three driving coils in each side and the corresponding adjacent wings are the same. According to the structure of the three layers and the twelve wings, the corresponding three wings are evenly and fixedly connected to each side of the upper, lower, left and right sides of a square barrel to form a projecting armature, two driving coils are disposed between the three wings of each side, two driving coils are disposed on the outer sides of the other two wings except the middle wing, and the distances between the four driving coils in each side and the side surfaces of the corresponding adjacent wings are the same. The multi-layer multi-wing reconnection type electromagnetic emission device has the characteristics of higher local magnetic field utilization ratio and higher emission efficiency.

The invention provides an elastic-resistance mechanical braking device which comprises a casing, a ratchet gear, a ratchet ring, a planet transmission system and a controlling device. The planet transmission system is assembled in the casing, the ratchet gear is assembled on a planet inner gear ring of the planet transmission system, a ratchet combined ring is wrapped on a gear edge of the ratchet gear and connected with the controlling device, and lubricating oil is filled in a cavity of the casing. The elastic-resistance mechanical braking device has the advantage that the mechanical braking device can generate linear resistance to a running locomotive and can realize stepless speed adjusting, soft starting, soft parking, overload protecting and multipoint driving power balancing.

The invention relates to a cylindrical surface hardening and strengthening treatment method for an ultra-large piston of a large oil press, comprising the steps of: (1) cleaning the running surface of an ultra-large working cylinder piston of an oil press, and then mixing micron-scale powder and nanoscale powder, which respectively comprise TiO2, SiO2, graphite and Ae2O2 according to the proportion of 1:1:0.3:0.1, wherein the weight ratio of various materials in the micron-scale powder to the various materials in the nanoscale powder is 4:1; uniformly blending the mixed powder with a methylcellulose solution, and presetting the blended mixed powder on the piston running surface to be strengthened by adopting a spraying method; and forming a uniform coating to be hardened, deepened and strengthened by laser, with the thickness of 0.05-0.15mm; (2) carrying out densely covering type deep-layer hardening and strengthening by using a TFL (Thin Film Laser)-H6000CO2 high-power laser processing machine set with the wide laser beam of 30*2mm and the effective power of 4300-5200W to realize laser hardening and strengthening to reach the effective depth of 2.2-3.0mm and the hardened layer hardness of HRC55-60; and (3) after the treatment of laser deep-layer hardening and strengthening, carrying out ground finish on the running surface of the piston to reach the machine size tolerance and precision of design paper. In the invention, the process is simple and the effect is very obvious.

The invention discloses an ablation-resistant polyphenylene sulfide composite material and a preparation method thereof, and belongs to the technical field of ablation-resistant materials. The polyphenylene sulfide composite material mainly comprises the following components: polyphenylene sulfide resin, alkali-free glass fibers and polyadipoyl m-xylylenediamine. The preparation method comprises the following steps: firstly melting and mixing polyphenylene sulfide resin and alkali-free glass fibers, then adding polyadipoyl m-xylylenediamine for secondary melting and mixing, cooling, curing anddicing to obtain a target product. The polyphenylene sulfide composite material obtained by the preparation method can bear high-temperature and high-pressure effects generated in a micro-arc oxidation process, has good ablation resistance, and is simple in preparation process.

The invention relates to a method for destroying a waste automobile airbag gas generator. The method adopts a water knife cutting process, namely by using high-pressure water jet flow to carry out cold-state cutting so as to destroy the airbag gas generator, and involves a water knife cutting machine, wherein the water knife cutting machine is mainly composed of a high-pressure pump, a numerical control machining platform, an injection cutting head, a sand supply system and a cooling system; and meanwhile, a waste water pretreatment system is also provided. The airbag gas generator is divided into two halves after being cut by a water knife, wherein sodium azide (NaN3 ) and potassium nitrate (KNO3) and the like of the airbag gas generator are completely dissolved in water, and an igniter is completely destroyed to lose the detonation function, so that only a metal shell capable of being recycled of the whole gas generator remains, and the metal shell is separately treated after being collected. Compared with the prior art, the method for destroying a waste airbag gas generator has the advantages of being safe and reliable in process, clean and environment-friendly, small in occupied area, low in operation cost, high in treatment efficiency and capable of running for 24 hours continuously; and meanwhile, the recycling application of the gas generator outer shell after treatment is wide.

The invention provides a titanium alloy component print-free micro-arc oxidation treatment device. The device comprises an electrolytic cell, a lifter and a cathode assembly. The cathode assembly comprises cathodes, a guard plate assembly and flexible sealing rubber plates. The cathodes are mounted in the guard plate assembly and located on the two sides of a titanium alloy component descending path. Upper guard plates, rear guard plates and lower guard plates close the upper surfaces, the lower surfaces and the side faces, back to the titanium alloy component descending path, of the cathodes. Hollowed-out front guard plates are fixed to the side faces, facing the titanium alloy component descending path, of the cathodes. Hollowed-out holes are uniformly formed in the hollowed-out front guard plates. The hollowed-out area is set according to the requirement for the electric field intensity. The flexible sealing rubber plates are fixed to the front ends of the two lower guard plates. When the lifter can drive a titanium alloy component to descend, the flexible sealing rubber plates are attached to the titanium alloy component to enable the oxidized titanium alloy component to be partially separated from the electric field. According to the titanium alloy component print-free micro-arc oxidation treatment device, sheet-like open type cathodes are changed into the cathodes with the closed lower portions, and oxidized titanium alloy is made to be separated from the electric field. Consequently, energy is saved, and erosion of titanium alloy can be effectively prevented.

The invention discloses a micro-arc oxidation device with a variable cathode area and a surface treatment method, and belongs to the technical field of surface treatment. The micro-arc oxidation device comprises a micro-arc oxidation tank, a circulating tank, a lifting mechanism, a cooling circulating mechanism and a power supply mechanism, an injection port and an outflow port are formed in the side part of the micro-arc oxidation tank, a liquid level control piece is arranged at the end of the outflow port, and a workpiece channel is formed in the bottom of the micro-arc oxidation tank; a cathode part in the micro-arc oxidation tank is connected with the cathode of the power supply mechanism; the lifting mechanism is arranged above the micro-arc oxidation tank, and an anode part connected with the anode of the power supply mechanism is arranged on the lifting mechanism; and the circulating tank is arranged below the micro-arc oxidation tank, and the micro-arc oxidation tank is connected with the circulating tank and can cool the electrolyte flowing to the injection port. According to the micro-arc oxidation device with the variable cathode area, the growth rate of a micro-arc oxidation film layer is increased, the processing period is shortened, the production efficiency of the micro-arc oxidation film layer is improved, the electrolyte can be recycled, and the production energy consumption is reduced.

The invention relates to a passive element with high surge and current withstanding characteristic. A metal sheet is arranged in the current loop of the passive element, to cause the current to pass through the metal sheet to be evenly dispersed, the passive element is generally provided with a silver electrode arranged on a ceramic chip, the silver electrode is led out from two terminals, through the arrangement of the metal sheet, the contact area of the terminals and the silver electrode can be increased, and the uniformity degree of the surge current passing through the silver electrode is improved, to cause no ablation phenomenon of a silver layer to be produced, to ensure that the operation of the invention is stable. The invention also discloses a method for improving the withstanding characteristic of the passive element to the surge current.

The invention discloses a micro-arc oxidation synchronous auxiliary electromagnetic field device, and belongs to the technical field of micro-arc oxidation devices. The device aims to solve the technical problems that an existing micro-arc oxidation device is low in machining efficiency, and sometimes ablation is prone to happening in the micro-arc oxidation film growing process. The device further comprises an electromagnetic field assembly. The electromagnetic field assembly is composed of a hollow pipe and N turns of coils wound around the outer wall of the hollow pipe. The electromagnetic field assembly is arranged in a micro-arc oxidation tank. A workpiece is mounted in the electromagnetic field assembly and serves as an anode to be connected with the output positive pole of a power box. The micro-arc oxidation tank and the hollow pipe serve as a cathode to be connected with the output negative pole of the power box. The power box controls on-off of the hollow pipe and the coils. According to the device, an auxiliary synchronous electromagnetic field is additionally mounted to act on electrolyte micro-plasma, the growing rate of a micro-arc oxidation film layer can be further increased, and meanwhile the ablation defect appearing during film layer growing in the micro-arc oxidation process is avoided.

The invention belongs to the field of earthquake physical models, and particularly relates to a geophysical reservoir model. The model is mainly made of epoxy resin, silica gel, aluminum powder and other compositions, the longitudinal and transverse wave speed of a model material is controlled by changing the contents of the components, the longitudinal wave speed can be controlled to be graduallychanged between 2800m/s and 4900m/s, and the transverse wave speed can be controlled to be gradually changed between 1500m/s and 2600m/s. The reservoir model manufactured by adopting a geophysical reservoir model composition and a manufacturing method has good penetrability under strong pulse excitation of laser ultrasound, good seismic wave reflection data can be obtained when the model is applied to physical simulation test, and a new method is provided for reservoir geologic body and laser ultrasound research.

The invention belongs to the technical field of flexography printing, and relates to an anilox roller cleaning method. The anilox roller cleaning method comprises the steps that an anilox roller is cleaned through pulse laser, the wavelength of the pulse laser is 1064 nm, the pulse frequency is 20-30 kHz, and the power is 180-220 W. According to the anilox roller cleaning method, a laser cleaninglight source is controlled accurately, and thus the effects of high cleaning speed, thorough cleaning effect and no chemical reagent participation are achieved.

The invention relates to a method for bending and forming an ammonia axial channel heat pipe based on laser induction. The method comprises the following steps of blanking an ammonia axial channel heat pipe raw material in a laser cutting manner, and milling a product notch, a hole site and a bending section fin according to a process drawing to obtain an ammonia axial channel heat pipe test piece; the surface of the test piece is coated with an ablation heat-proof material; and simulation is conducted on the laser-induced bending forming parameters of the test piece, the bending forming angle, the temperature distribution cloud picture and the stress-strain cloud picture of the test piece under the laser-induced bending forming parameters are determined, and the laser-induced bending forming parameters with the surface quality and the forming angle meeting the requirements of the test piece are determined through simulation. The ammonia axial channel heat pipe test piece is tested according to the determined laser-induced bending forming parameters, whether bending forming of the ammonia axial channel heat pipe meets the requirements or not after testing is judged, and if not, the laser-induced bending forming parameters are optimized, and the ammonia axial channel heat pipe test piece is tested again till the requirements are met.