34results about How to "Stable for long-term use" patented technology

The invention provides a lightweight high-strength carbon fiber composite hydrocylinder. The hydrocylinder comprises metal heads, a hydrocylinder piston, a metal liner formed by a hydrocylinder barrel, fixing parts, metal lantern rings and sealing rings, the metal liner is externally and integrally coated with a reinforcing layer formed by a carbon fiber composite, the metal lantern rings are sleeved outside the reinforcing layer which is formed by taking thermosetting resin as a matrix and carbon fiber as a reinforcement, and the thermosetting resin matrix accounts for 23-40% of the reinforcing layer by weight. Compared with all-metal hydrocylinders in the prior art, the lightweight high-strength carbon fiber composite hydrocylinder has the advantages that strength, rigidity and fatigue resistance of the hydrocylinder are all obviously improved under various working conditions, so that safety of the hydrocylinder is improved effectively, weight is reduced by 30-65%, and the objectives of mechanical pump truck weight reduction and complete truck cost reduction are achieved.

Relating to methods and devices for deep desulfurization and alkali control of sulfur incineration tail gas by sodium process, the invention provides a method for deep desulfurization and alkali control of sulfur incineration tail gas by sodium process. The method includes the steps of: (A) subjecting the sulfur incineration tail gas to air cooling, then letting the cooled tail gas enter a desulfurization tower quenching section, and then introducing the tail gas into a desulfurization tower body; (B) ) in the desulfurization tower body, enabling the tail gas to enter the spray zone of the desulfurization tower from the lower part, and performing multilayer spraying of a circulating absorbent to ascending gas for reaction to absorb most of the sulfur in the tail gas; (C) letting the tail gas carrying atomized droplets ascend to the swirling flow zone of the desulfurization tower and enter swirling flow tubes for further contact absorption of alkaline droplets and non-fully reacted sulfur dioxide to strengthen the desulfurization effect, and letting the alkaline droplets gather and drip from the lower openings of the swirling flow tubes to flow back into the desulfurization tower body; and (D) mixing the purified gas obtained in step (C) with the heated air in step (A), and then discharging the mixed gas into the atmosphere together. The invention also provides a device for deepdesulfurization and alkali control of sulfur incineration tail gas by sodium process.

The invention relates to a manufacturing method for a steel rotational moulding storage tank with a modified polypropylene inside liner. The method comprises the following steps: welding, tapping, polishing, welding a wire mesh, arranging a rolling ring, adding modified polypropylene powder, heating and autorotating, rocking and autorotating, cooling, offloading, removing the rolling ring, trimming and the like. In the invention, the storage tank obtained by the method exactly overcomes the shortcomings of the prior art, the steel rotational moulding storage tank with the modified polypropylene inside liner has not only the strength of steel but also the corrosion resistance of polypropylene plastic, and the inside liner of the steel rotational moulding storage tank has obvious characteristics of good compactness, high mechanical property, high integrity, no joint, no welding line, uniform thickness, high temperature and low temperature resistance, negative pressure resistance, strong adhesion, corrosion resistance, impact resistance, no toxicity, easy maintenance and the like.

The invention discloses a device for relieving sample introduction capillary pollution through mass spectrometry. The device comprises a sample storage device, a mass spectrometry detector, a four-way control valve, a filter sand core, a purge gas source and a tail gas treatment device; the four-way control valve is at least provided with four connectors; every two connectors form a group; the filter sand core is rotatably mounted in the four-way control valve; the filter sand core is rotatably communicated with any group of connectors; the sample storage device and the mass spectrometry detector are connected to the connectors; the filter sand core purifies a sample entering from the sample storage device; the purge gas source is connected with the connector; and the tail gas treatment device is connected with the connector, and the tail gas treatment device is used for treating waste materials discharged from the filter sand core. A sample to be detected is conveniently filtered and then is detected, a filtering part is conveniently cleaned subsequently, the service life of the filtering part is prolonged; and meanwhile, the device is stable in structure and simple in operation.

The invention particularly relates to an optical fiber end surface reflecting mirror packaging method used for a reflecting type optical fiber current transformer. The method comprises the following steps of (1.1)arrangement: an optical fiber end surface reflecting mirror is horizontally arranged in a quartz plate groove; (1.2) fixing: a first type of optical fiber fixing glue is coated at the specific positions of the left of a reflection-increasing film and right of the left port of a quartz plate and then heated and cured and stands; (1.3) sleeving and sealing: the quartz plate is sleeved in a quartz capillary tube, and a second type of optical fiber fixing glue is coated at the two ports and then heated and cured and stands; (1.4) drying: the quartz capillary tube is arranged in a high-temperature drying box to be dried and then stands; (1.5) protection and external packaging: packaging glue is evenly coated on the surface of the capillary tube and then is externally sleeved by a toughened glass tube; (1.6) temperature cycling; and (1.7) use after standing. The structure obtained by the optical fiber end surface reflecting mirror packaging method has outstanding advantages that the structure is simple, the size is small, sealing performance is great, reliability is high and long-term use is stable.

The invention belongs to the technical field of a fiber current transformer and specifically relates to an all-fiber quarter wave plate packaging method. The method provides a manufacturing process flow to meet use requirement of the fiber current transformer through a reasonable three-layer packaging process and based on the practical application situation of the fiber current transformer. The all-fiber quarter wave plate packaging method has the obvious advantages of simple structure, small size, good seal performance, high reliability and stable long-term use, so that an all-fiber quarter wave plate can fully replace a crystal quarter wave plate in the application of the fiber current transformer, and becomes a high-precision, high-stability and high-reliability fiber current transformer core part.

The invention relates to the technical field of nanofiltration membranes, and particularly discloses a polyethylene microporous membrane capable of being used for preparing a nanofiltration membrane,a polyvinyl nanofiltration membrane and a preparation method thereof. Compared with a nanofiltration membrane prepared from a commercialized polyethylene membrane on the market, the nanofiltration membrane prepared from the polyethylene microporous membrane with a limited range of the physical parameters is high in flux, high in bivalent salt retention rate, high in monovalent salt retention rate,high in tap water retention rate and more excellent in overall filtering performance, and can be applied to various scenes with different solvents, the flux is kept stable, no dead point or damage occurs on the membrane surface, the tolerance limit is reached only after 70DEG C, the tolerance performance is excellent, the service life is long, the market competitiveness is extremely high, and theapplication prospect is very considerable.

The invention discloses a lithium bromide absorption liquid with a carbon nano tube disperse system. The lithium bromide absorption liquid with the carbon nano tube disperse system is lithium bromide aqueous solution with the mass concentration of 1 to 50 percent; the lithium bromide aqueous solution comprises carbon nano tube particles accounting for 0.001 to 0.01 percent of the total weight of the lithium bromide aqueous solution, a surfactant accounting for 0.01 to 0.1 percent of the total weight of the lithium bromide aqueous solution, and a dispersion stabilizer accounting for 0.01 to 0.1 percent of the total weight of the lithium bromide aqueous solution. The lithium bromide absorption liquid has excellent dispersion stability and substance conductivity.

The invention belongs to the field of heating and refrigeration, and particularly relates to a refrigerating and heating vacuum pipeline structure. The refrigerating and heating vacuum pipeline structure comprises a pipe network system laid in a wallboard, in the floor or in a cement filling layer, and a main pipe which is connected with the pipe network system of each indoor and is used for supplying air or returning air; and the pipe network system comprises a plurality of vacuum net pipes with two ends connected with the main pipe and internally provided with circular pipelines, wherein thenet pipes each comprise a stable part and an arc-shaped deflection part, the stable part is at least located at the upper part and is formed with a square outer contour and is used for stabilizing, the arc-shaped deflection part is arranged on the lower part or is connected to the lower part and is used for conveniently adjusting the net pipes, and circle centers of the net pipes are used as center positions of the deflection parts. According to the refrigerating and heating vacuum pipeline structure, the specific stable parts and the deflection parts are cooperated so that the steel net pipes can be stabilized, convenient and accurate in installation and capable of being stably and efficiently used for a long time and is prevented from being damaged easily.

The invention discloses a lithium bromide absorption liquid with a nano-silver disperse system. The lithium bromide absorption liquid with the nano-silver disperse system is lithium bromide aqueous solution with the mass concentration of 1 to 50 percent; the lithium bromide aqueous solution contains nano-silver particles accounting for 0.001 to 0.01 percent of the total weight of the lithium bromide aqueous solution, a surfactant accounting for 0.01 to 0.1 percent of the total weight of the lithium bromide aqueous solution, and a dispersion stabilizer accounting for0.01 to 0.1 percent of the total weight of the lithium bromide aqueous solution. The lithium bromide absorption liquid has excellent dispersion stability and substance conductivity.

The invention provides a good-stability and -durability heating component and a substrate as well as its high-efficiency and -accuracy making method and the device using them. It uses at least one part electroconductive silicon substrate diffused with impurities like B and so on as the material for etching processing, integrally makes a heating part, where the heating part is provided with one or many narrow slits without angle parts or with circular ones. At the same time, for controlling the heating state of the heating part and it forms a concave part arranged in the bottom part.

The invention discloses heat-conducting silicone grease with a gradually-increased heat conductivity coefficient. The heat-conducting silicone grease is prepared from the following raw materials in parts by weight: 80-100 parts of silicone oil, 1000-1200 parts of spherical aluminum oxide, 100-200 parts of aluminum nitride and 10-20 parts of a hot volatile oil agent. In addition, the invention further discloses a preparation method of the heat-conducting silicone grease with the gradually-increased heat conductivity coefficient. Through formula design, a certain proportion of hot volatile oil agent is used for replacing an oil agent with good thermal stability, after construction, the hot volatile oil agent is removed through self heating of a component but is not dried and solidified, and the product can still be kept stable in long-term use; and the effect of increasing the heat conductivity by increasing the filling amount of the heat-conducting powder is achieved in a disguised manner.

The invention discloses a lithium bromide absorption liquid with a nanogold dispersion system. The lithium bromide absorption liquid with a nanogold dispersion system is a lithium bromide aqueous solution with a mass concentration of 1-50%, and the lithium bromide aqueous solution contains nanogold particles accounting for 0.001-0.01% of the total weight of the lithium bromide aqueous solution, a surfactant accounting for 0.01-0.1% of the total weight of the lithium bromide aqueous solution and a dispersion stabilizer accounting for 0.01-0.1% of the total weight of the lithium bromide aqueous solution. The medium shows excellent dispersion stability and material conductivity.

The invention discloses a concrete cavity forming mold. The mold comprises a telescopic skeleton, an elastic wrapping layer and multiple supporting plates, the supporting plates are arranged around the outer side of the telescopic skeleton, the telescopic skeleton is connected with the supporting plates, the elastic wrapping layer is mounted on the outer sides of the supporting plates, and a use method of the mold comprises the steps of S1, mold filling, wherein the telescopic framework drives the supporting plates to shrink, the elastic wrapping layer is mounted on the outer sides of the supporting plates, the telescopic skeleton drives the supporting plates to extend until the size of the outer contour of the wrapping layer is consistent with a concrete cavity required to be formed, andfinally, the mold is filled in the position of a cavity; S2, concrete pouring; and S3, mold stripping, wherein during mold stripping, the telescopic framework drives the supporting plates to shrink, the elastic wrapping layer shrinks to be separated from the concrete cavity, and the mold is taken out. The mold has the advantages that the cavity structure does not need to be changed, the mold is suitable for concrete cavities in multiple section shapes, long-term use is stable, and reliability is achieved.

The invention relates to the technical field of household articles, in particular to a magnetic massage mattress, which comprises a composite supporting module, an upper sound insulation pad laid on the upper side of the composite supporting module and a plurality of magnetic strips arranged on the upper sound insulation pad, wherein the magnetic strips are mounted and positioned on the upper surface part of the upper sound insulation pad through more than two magnetic strip positioners which are arranged at intervals in the length direction of the magnetic strip, the magnetic strip positioner comprises a balance clamping sheet clamped between the upper sound insulation pad and the composite supporting module and a plurality of positioning piles which are connected to the balance clamping sheet, penetrate through the upper sound insulation pad upwards and are provided with parts exposed out of the upper surface of the upper sound insulation pad, a positioning frame allowing the magnetic strip to transversely penetrate through is formed on the portion, exposed out of the upper surface of the upper sound insulation pad, of the positioning pile, a positioning door opening transversely penetrating through the positioning frame and exposed out of the upper surface of the upper sound insulation pad is formed in the positioning frame, the magnetic strip penetrates through the positioning door opening, and the lower side of the magnetic strip abuts against the upper sound insulation pad. According to the invention, the positioning effect is better.

The invention relates to a transmission mechanism of multifunctional testing equipment for an ignition lock. The transmission mechanism comprises a reduction box (27) of a first stepper motor (17), a reduction box (28) of a third stepper motor and a three-output shaft reduction box (26) of a second stepper motor (18), wherein output shafts of the three-output shaft reduction box (26) are connected with three threaded screw rods (23) (24) and (25); the three threaded screw rods (23) (24) and (25) are in threaded connection with three nuts (20) (21) and (22) on a longitudinal reciprocating lever (29); the longitudinal reciprocating lever (29) is connected with 9 to 12 testing transmission shafts (12); each testing transmission shaft (12) is connected with a gear (11); the gear (11) is meshed with a rack (10) on a transverse reciprocating lever (16); and a gear (8) on a gear shaft (17) is also meshed with the rack (10) on the transverse reciprocating lever (16). The 9 to 12 testing transmission shafts can be rotated at the same time in a reciprocating way and moved longitudinally. The head of each testing transmission shaft (12) is provided with an automatic protective device (30) ofa tested part. The transmission mechanism is suitable for testing equipment of various ignition lock electrical appliances of different models.