47results about How to "Improving pulse performance" patented technology

A laser material processing system and method are provided. A further aspect of the present invention employs a laser for micromachining. In another aspect of the present invention, the system uses a hollow waveguide. In another aspect of the present invention, a laser beam pulse is given broad bandwidth for workpiece modification.

The invention discloses an inner glue and rubber mixed material for high-performance steel wire-wound hydraulic rubber tubes and a preparation method thereof, belonging to an inner glue and rubber mixed material and solving the technical problem of poor pulse performance of the finished products of hydraulic rubber tubes. The inner glue and rubber mixed material is prepared from the following raw materials in parts by weight: 95-115 parts by weight of butadiene-acrylonitrile rubber, 6-10 parts by weight of active agent, 4-6 parts by weight of resin, 1-2 parts by weight of anti-aging agent, 40-60 parts by weight of high-dispersion and low-structure carbon black, 6-8 parts by weight of chemical plasticizer and 3.5-3.9 parts by weight of vulcanizing accelerator. The preparation method comprises the following steps: (1) primary refining: refining the butadiene-acrylonitrile rubber for 5-6 minutes at 95 -100 DEG C in an airtight rubber refining machine; (2) mixed refining: adding the active agent, the resin, the anti-aging agent, the high-dispersion and low-structure carbon black and the chemical plasticizer for mixed refining of 9-11 minutes at 100 -110 DEG C, discharging the mixed rubber and placing the mixed rubber on a refining machine to be rolled for 2-3 times and cooling the mixed rubber to 45 -55 DEG C; and (3) vulcanization: adding the vulcanizing accelerator, carrying out three-time packaging, two-time rolling and one-time thinning on an open type rubber refining machine, discharging sheets after achieving the roll distance of 0.4-0.6 mm, extruding the placed sheets, and vulcanizing the sheets for 35-45 minutes at 148-152 DEG C.

Process and device for reducing an ignition voltage of power pulses in plasmas operated in a pulsed manner with long pulse-off times. The process includes generating a power pulsed plasma at a pulse duty factor, the pulse duty factor being a ratio of pulse-on time to pulse-off time, and at least before the beginning of the pulse-on time of the power pulses, producing charge carriers using an additional plasma discharge at a lower power than that of the power pulses. The device includes a vacuum chamber including at least one pump system, an arrangement for producing plasma, the arrangement including at least one anode and at least one cathode, an energy source connected to the cathode and the anode which can be pulsed in the frequency range of between approximately 10 Hz to approximately 1 MHZ, and a mechanism for one of producing an additional plasma discharge.

The invention discloses a method and a device for removing space debris. The method is to apply electromagnetic force to the space debris running in the original orbit; the size and / or direction of the speed of the space debris change under the action of the electromagnetic force; ; The perigee height of the space debris at least in the new orbit is lower than the perigee height of the space debris in the original orbit; the space debris in the new orbit will eventually fall into the earth's atmosphere under the action of atmospheric drag. The device includes a satellite carrying platform; the satellite carrying platform is provided with an electric field device or a magnetic field device or a combination of the electric field device and the magnetic field device for removing space debris. The present invention does not require high precision for space debris position detection, can effectively remove tiny space debris, can fully utilize solar energy to generate electricity, saves energy, and has the beneficial effects of simple structure, low manufacturing cost and better pulse effect.

The invention discloses a dual-component attitude-controlled thruster injector with a micro-flow-channel liquid collecting cavity. The dual-component attitude-control thruster injector comprises an oxygen path connecting nozzle, a combustion path connecting nozzle, an injector structure body and a thrust chamber butt joint interface; the oxygen path connecting nozzle, the combustion path connecting nozzle and the thrust chamber butt joint interface are integrally connected with the injector structure body; the oxygen path connecting nozzle is located on one side of the upstream end face of theinjector structure; the combustion path connecting nozzle is located on the other side of the upstream end face of the injector structure; the thrust chamber butt joint interface is located on the downstream end face of the injector structure; one end of an injector oxygen path flow channel communicates with the oxygen path connecting nozzle, and the other end of the injector oxygen path flow channel communicates with the thrust chamber butt joint interface. The dual-component attitude-controlled thruster injector produces high quality atomization, and enables an oxidant and a combustion agent to be efficiently blended and combusted in a thrust chamber.

The invention discloses a domestic pulsed toothwash machine. According to the domestic pulsed toothwash machine, a water pump motor is a 12V direct-current motor, a micro-motor with a working current of 1A provides power for a water pump body, a water inlet in the water pump body is communicated with a water tank, and a water outlet of the water pump body is communicated with a handle nozzle through a hose; the water pump body is provided with a modularized pump body; the water pump motor is connected with a worm-worm gear speed reduction device, an eccentric gear is directly driven to drive a piston body to carry out the pulsed circulation working of the water pump, a water flow with a pulse of 1200 times / min and a weight of 0.8KG can be generated for cleaning dirt and residues on gap and roots of teeth. The domestic pulsed toothwash machine has a fast cleaning effect on dental plaque and has an assistant curative effect on patients with periodontitis to a certain extent.

The invention discloses a high-pressure self-oscillation oscillating impulse jet flow nozzle with continuous adjustable cavity length. The high-pressure self-oscillation oscillating impulse jet flow nozzle comprises an inlet nozzle, an adjusting ring, a base and an outlet nozzle, wherein the base is an inner hollow cylinder; the inner cavity of the cylinder is a cylindrical oscillating cavity; the upper end of the inlet nozzle is connected with a high-pressure pipe by external threads arranged on the cylindrical face of the end part of the upper end; the middle of the inlet nozzle is spirally connected with inner ring threads of the adjusting ring by external threads arranged on the outer cylindrical face of the middle; the lower end of the inlet nozzle is spirally screwed into the oscillating cavity of the base; the base is fixedly connected with the adjusting ring and the outlet nozzle respectively by screws, through holes formed in the upper and lower bottom faces of the base, a through hole formed in the adjusting ring and a through hole formed in the outlet nozzle. The high-pressure self-oscillation oscillating impulse jet flow nozzle with the continuous adjustable cavity length has the advantages that aiming at different working pressures, the cavity length of the oscillating cavity can be continuously adjusted by rotating the base, and thus the continuous jet flow is changed into strong impulse jet flow; each part of the nozzle is easily processed, and the replacement is convenient.

The invention relates to a pilot valve lower valve clack split-structure pilot operated safety valve which comprises a main valve and a pilot valve, wherein the main valve comprises a main valve body, a guide sleeve, a main valve clack, a main valve cap, a main valve spring, a main connecting pipe, a main valve seat, a main valve limit screw and the like; and the pilot valve comprises a pilot valve body, a pilot valve seat, a pilot valve cap, a pilot valve guide sleeve, a seal locating ring, an upper valve cap, an adjusting bolt, a valve stem, a guide valve clack, a lower spring seat, an upper spring seat, an upper spring, a locking nut, a locating sleeve, an adjusting casing, a lower valve clack shaft, a lower valve clack disk, a lower spring, a lower seal ring, an upper seal ring, an upper guide post and a lower guide post. The pilot valve lower valve clack adopts the split structure, thereby enhancing the pulse effect and synchronization sensitivity of the pilot valve, and ensuring the various action properties and sealing reliability of the pilot operated safety valve. The pilot valve lower valve clack split-structure pilot operated safety valve is suitable for high-pressure high-discharge-capacity high-discharge-back-pressure working conditions in need of quick pressure relief.

The invention discloses timed-release preparation consisting of a core tablet and a coating, which is characterized in that the coating contains retarder of stearate,. The invention also discloses a method for preparing the timed-release preparation; the coating of the timed-release preparation can be suppressed through direct powder sintering or wet granulation. The timed-release preparation of the invention can prohibit the rapid release of the preparation, obviously prolong the time delay and maintain comparatively better pulse effect. The wet granulation used for suppressing the coating adopted by the preparation method of the invention can reduce the consumption of framework material and decrease the viscosity during the granulation process so that the method is convenient for the granulation.

The invention discloses ethylene-acrylate rubber resistant to 200 DEG C, low in pressure change and high in pulse. According to the technical scheme, the ethylene-acrylate rubber is prepared from, by weight, 80-120 parts of ethylene-acrylate rubber, 1-3 parts of stearic acid, 1-3 parts of liquid antioxidant, 1.5-4.5 parts of auxiliaries, 50-80 parts of carbon black and 20-40 parts of functional reinforcing agent. The invention has the advantages that the formula of the rubber is optimized, oxygen free radicals are effectively captured, and the free radicals are prevented from damaging the molecular structure of a high polymer and causing degradation of the high polymer, so that the liquid oxidant and the rubber have better compatibility; the heated ceramic micro powder is beneficial to combination of rubber, carbon black and various auxiliaries, the service life of the turbocharging pipe under extremely severe conditions is greatly prolonged, and the safety and practicability of the turbocharging hot end pipe assembly can be improved.

The invention belongs to the technical field of rubber hoses, and particularly relates to a power steering high-pressure hose, which comprises an inner rubber layer, an enhancement layer, a middle rubber layer, an enhancement layer and an outer rubber layer which are arranged from inside to outside, wherein the inner rubber layer comprises the following components in parts by mass: 50-100 parts of chlorosulfonated polyethylene, 2-10 parts of active magnesium oxide, 1-6 parts of pentaerythritol, 1-4 parts of anti-aging agent, 2-8 parts of dispersing agent, 80-130 parts of semi-reinforcing carbon black, 10-50 parts of activated light calcium carbonate, 20-50 parts of plasticizer, 0.2-1 part of accelerant, and 0.5-5 parts of cross-linking agent; the cohesiveness of yarns and rubber is good, and through tests, the yarns and the rubber cannot be separated and can be integrally torn when being forcedly separated; the inner rubber layer is excellent in physicochemical property, the enhancement layers select rayon, hose expansion capacity is ultra low, the inside volume expansion is as low as 1.13ml / m, adhesive force inner rubber, middle rubber and outer rubber tear is realized, and the pulse performance is good.

The invention relates to a broadband tunable optical parametric chirped pulse amplification system based on soliton self-frequency shift. The stretched soliton pulse laser generated by a pulse laser is transmitted as a seed signal to an all-fiber chirped pulse composed of a stretcher, an amplifier and a compressor. In the amplification system, the ultrashort pulse laser is output to the fiber frequency shift system composed of two different types of nonlinear fiber cascaded structures. Output to BaGa 2 GeSe 6 The crystal structure is connected with a laser source for matching the phase of the tunable ultrashort pulse laser, and the mid-infrared ultrashort laser with broadband tunable output is output through the crystal. The invention can effectively suppress the generation of supercontinuum laser in the fiber laser system and the high-energy laser system, and greatly improves the energy conversion efficiency of the seed signal in the optical parametric chirped pulse amplification system.

The invention relates to the technical field of radio long wave communication technology, and specifically relates to an extremely-ultra low frequency channel atmosphere noise suppression method based on variance median filtering. The extremely-ultra low frequency channel atmosphere noise suppression method based on variance median filtering includes the steps: constructing a multi-reference magnetic vector sensing system, synchronously receiving extremely-ultra low frequency signals through multi channels, and obtaining a magnetic induction output sampling point matrix X; according to the channel sampling point sequence, grouping X, estimating the variance of each group, and obtaining the variance matrix D; based on a large number decision criterion, performing pulse detection and two-stage adaptive median filtering on D; according to output of the second stage median filtering and input of the first stage median filtering, performing sequence reconstruction, and obtaining an output matrix Y; and performing power frequency harmonic interference and remaining atmosphere noise suppression on Y. As the extremely-ultra low frequency channel atmosphere noise suppression method based on variance median filtering taking the variance of the sampling point group as input of the adaptive median filter, the impulsiveness is improved. As the extremely-ultra low frequency channel atmosphere noise suppression method based on variance median filtering determines the pulse state of each element of the variance matrix based on the large number decision criterion, the pulse detection accuracy is improved and the defect that the performance is low when the median filtering is in the local high density pulse noise condition in the traditional method.

The invention provides a positive pulse generator. The positive pulse generator provided by the present invention includes a casing, a solenoid valve assembly, a pressure transmission assembly, a support guide assembly and a pulse conversion assembly. Arranged in sequence, the shell and the pressure transmission assembly are connected through a support guide assembly, the solenoid valve assembly includes a first solenoid valve, and the first solenoid valve is used to drive some parts in the pressure transmission assembly to move, so that the pressure fluid in the pressure transmission assembly The pulse conversion component is driven to generate pulses; the pulse conversion component includes a first pulse conversion component and a second pulse conversion component, the first pulse conversion component is connected with the pressure transmission component, the second pulse conversion component is located in the first pulse conversion component, and the second The pulse conversion component is in sliding fit with the first pulse conversion component. The positive pulse generator provided by the invention has higher stability.

The invention relates to the technical field of processing aids for rubber products, in particular to a high-temperature and high-pressure-resistant rubber tube middle rubber and inner rubber comprehensive accelerator and a preparation method thereof; in parts by weight, the following raw materials are included: 20-26 parts of mixed rubber material, 0.8-1.2 parts of reinforcing agent, 1.5-2.0 parts of nano filler, 2.5-3.6 parts of performance enhancer, 1.0-1.5 parts of nano-molybdenum disulfide, 10-15 parts of zinc diphosphate, 12-20 parts of sulfenamide accelerator , 2-8 parts of thiazole accelerators, 5-10 parts of N-cyclohexylthiophthalimide, 12-20 parts of 4,4'-dithiodimorpholine, 3-10 parts of blowout preventer Cream, 1-3 parts of dispersant and 25-35 parts of insoluble sulfur; the comprehensive accelerator prepared by the present invention is used as the raw material for preparing rubber hose, so that the prepared rubber hose not only has good anti-ultraviolet, anti-aging and anti-yellowing It also has good antibacterial, anti-mildew properties, mechanical properties, high temperature resistance, oil resistance, and high pressure resistance.

The invention provides a positive pulse generator. The positive pulse generator comprises a shell, an electromagnetic valve assembly, a pressure transmission assembly, a supporting and guiding assembly and pulse conversion assemblies, wherein the electromagnetic valve assembly, the pressure transmission assembly and the pulse conversion assemblies are all located in the shell and sequentially arranged in the axial direction of the shell, and the shell is connected with the pressure transmission assembly through the supporting and guiding assembly; the electromagnetic valve assembly comprises afirst electromagnetic valve used for driving part of components in the pressure transmission assembly to move, so that pressure liquid in the pressure transmission assembly drives the pulse conversion assemblies to generate pulses; the pulse conversion assemblies comprise the first pulse conversion assembly and the second pulse conversion assembly, the first pulse conversion assembly is connectedwith the pressure transmission assembly, and the second pulse conversion assembly is located in the first pulse conversion assembly and is in sliding fit with the first pulse conversion assembly. Thepositive pulse generator provided by the invention has high stability.