41results about How to "Stop swelling" patented technology

The invention relates to a light-weight, high temperature-resistance and heat-insulation ceramic fiber tile and a making method thereof. The heat insulation tile comprises ceramic fibers and boron oxide, wherein the ceramic fibers comprise quartz fibers, alumina fibers and yttrium oxide stabilized zirconia fibers. The making method of the light-weight, high temperature-resistance and heat-insulation ceramic fiber tile comprises the following steps: preparing a sintering aid suspension, preparing a ceramic fiber slurry, carrying out wet green body molding, drying the obtained wet green body, and carrying out pressurization sintering. The heat insulation tile has good heat insulation effect and mechanical performances, has light weight and resists high temperature; the density is controllable between 0.10g/cm<3> and 0.90g/cm<3>; the lowest apparent heat conduction coefficient at room temperature reaches 0.033W/(m.K); the compressive strength at room temperature is greater than 3.0Mpa; and the long-time use temperature can reach 1350DEG C.

A method and apparatus for the treatment of injuries or pain associated with the neck, spine, lower back, sacrum or central nervous system. Apparatus can also be used to cool and relax the body. The particular embodiment utilizes a neck wrap that is activated to produce an endothermic reaction to draw heat from, or apply cold to, the neck, spine and central nervous system. A clear or transparent layer is also used to help with visual inspection. In another embodiment a neck wrap contains ice cubes to draw heat from, or apply cold to, the neck, spine and central nervous system. Layers are used to accomplish different applications and colors are used to associate with selected sport teams colors or camouflaged as may be required in a battlefield environment. Another embodiment utilizes a similar device and design for a lower back wrap.

The invention provides a dual-pole polar plate lead-acid accumulator with long service life and high capacity used for an electric vehicle. A polar plate group consists of a dual-pole polar plate, an upper end polar plate, a lower end polar plate and a clapboard; the polar plate group is arranged in a battery frame which presses the polar plate group and gives a suitable pressure to active matter. The invention is technically characterized in that one surface of an anode of a baseplate of the dual-pole polar plate is provided with a conductive needle and one surface of a cathode is provided with a conductive column; furthermore, electrode modification is carried out for the baseplate and the conductive needle. After the modification, the specific capacity of the battery is 45-50Wh/kg, which is improved by 20%-30% compared with the existing normal battery. The design service life is 3-8 years, which is improved 2-3 times compared with the normal battery. The battery is mainly used for electric vehicles, electric bicycles, etc., as power supplies, and can be also used for all sites where the existing normal lead-acid batteries are applied.

The invention discloses a film formation drilling fluid applicable to a coal-bed gas well and a preparation method thereof. The film formation drilling fluid comprises the following components in percentage by mass: 0.1-0.3% of tackifying agent, 2.0-5.0% of film forming agent, 0.1-0.3% of coated flocculant, 0.2-5.0% of blocking agent, 1.0-10.0% of plugging agent, 0.05-0.2% of alkalinity regulator and the balance of water. By adopting the film formation drilling fluid disclosed by the invention, a low-permeability blocking layer can be quickly formed at the coal pore throat so as to prevent the fluid or solid phase from entering the coal bed, effectively prevent and slow down fluid loss and prevent the easily-hydrated substances in the coal cleat and crack from expanding, dispersing and polluting the reservoir stratum.

The invention discloses a self-deoiling type water surface oil stain adsorption ball, and belongs to the technical field of water body pollution treatment. According to the invention, an adsorption ball body provided with an oil absorption cotton material can rapidly adsorb oil stains, and the oil stains adsorbed by the adsorption ball body can be diffused in an oil guide rope and an oil collection ball which are connected with the adsorption ball body and are made of the same material, so that part of the oil stain is guided to the oil collection ball; the oil collection ball is soaked in anoil stain emulsifying agent, the emulsifying agent can emulsify and decompose the oil stain in the oil collection ball and perform automatic deoiling, a specially-made expansion and shrinkage ball anda water guide net set matched with the specially-made expansion and shrinkage ball are arranged, and the water guide net set can guide water to the expansion and shrinkage ball, so that the expansionand shrinkage ball can achieve automatic repeated expansion and shrinkage; and the adjacent expansion and shrinkage balls intermittently extrude the oil collection ball between the expansion and shrinkage balls to extrude out oil stains adsorbed in the oil collection ball, so that deoiling is accelerated, the adsorption balls can adsorb and deoil at the same time, the oil adsorption capacity of the adsorption balls is greatly improved, and then the treatment efficiency is greatly improved.

The invention discloses a sleeve for coal underground gasification, and an intake and exhaust hole structure for coal underground gasification, which relate to the technical field of coal underground gasification, and aim at preventing a stratum with a gasification agent from invalid loss, and promoting the running of the sleeve. The sleeve for coal underground gasification comprises an upper sleeve and a lower sleeve, wherein the upper end of the lower sleeve is arranged in the upper sleeve in a matching and penetrating manner, and the lower sleeve is capable of freely sliding along the inner wall of the upper sleeve; the upper end of the lower sleeve and the lower end of the upper sleeve are funnel-shaped structures, and the lower-end funnel-shaped structure of the upper sleeve is capable of limiting the upper-end funnel-shaped structure of the lower sleeve, thus preventing the upper end of the lower sleeve from separating off from the lower end of the upper sleeve. The sleeve for coal underground gasification disclosed by the invention is used for the intake and exhaust hole structure for coal underground gasification.

A method and apparatus for the treatment of injuries or pain associated with the head or central nervous system. The present embodiment utilizes a head covering that is activated to produce an endothermic reaction to draw heat from, or apply cold to, the head and central nervous system. Layers are used to accomplish different applications and colors are used to associate with selected sport teams colors or camouflaged as may be required in a battlefield environment.

The invention relates to the field of a battery, and discloses a high-energy density 18650 electrical core. The 18650 electrical core comprises a housing, a positive plate, a negative plate, a diaphragm and an electrolyte. a current collector of the positive plate is aluminum foil, a positive active substance is nickel cobalt lithium manganate 811; the current collector of the negative plate is copper foil, a negative active substance is a silicon-based composite material; the diaphragm is a PP or PE material; a solute of the electrolyte is lithium hexafluorophosphate and lithium bisoxalatoborate, and the solvent of the electrolyte is a mixture of one of succinic anhydride and fluoroethylene carbonate as well as vinylene carbonate. The 18650 electrical core selects the specific positive and negative materials for cooperation, has high-energy density, overcomes many technical defects during a preparation process, and practically realizes batch production.

The invention relates to the technical field of a drilling fluid, and discloses a strongly-inhibitive collapse-prevention low-damage drilling fluid, which comprises the following components in percentage by weight: silicate 2-5%, small cation inhibitor 0.5-1.0%, hydrolyzed polyacrylamide 0.3-0.8%, viscosity enhancer 0.3-0.5%, water-loss control agent 1-3%, barite 0-6%, formaldehyde 0.05-0.1%, andthe balance of water. The drilling fluid disclosed by the invention has the characteristics of long-duration collapse-prevention property, strong inhibitory effect, good clogging effect, smooth, dense and film-like slurry cake, good lubricating property, low damage to low-porosity low-permeability low-abundance reservoir beds, and simple and feasible formula and slurry preparation method, and canincrease the pressure-bearing capacity of the formation.

The invention discloses an oxygen content detection system. The system mainly comprises a zirconia oxygen analyzer and a PID (proportion integration differentiation) control loop which is connected with the zirconia oxygen analyzer, wherein the zirconia oxygen analyzer is also connected with a pneumatic drying tower which is connected with a heat exchanger; the heat exchanger, a feed pipeline of the pneumatic drying tower and a discharge pipeline are connected to form a pneumatic motion loop; and the PID control loop consists of a steam injection amount control loop and a humidity exhaust blowing rate control loop. Compared with the prior art, the oxygen content detection system provided in the method can effectively reduce the tobacco shred burning risk under an aerobic condition, and reduce the oxygen reaction degree of the tobacco shreds in a high-temperature process airflow, so that the sense quality of the tobacco shreds is improved.

The invention relates to the field of oilfield workover, discloses anti-water-lock workover fluid and a preparation method, and aims to solve the technical problem of low temperature resistance of the anti-water-lock workover fluid in the prior art. The anti-water-lock workover fluid is prepared from the following components in percentage by weight: 0.3-0.6 percent of xanthan gum, 0.5-2.0 percent of high-temperature-resistant fluid loss agent, 0.2-0.5 percent of sterilizing agent, 0.2-0.5 percent of anti-water-lock agent, 0.5-2.0 percent of inhibitor, and the balance of water. The technical effect of improving the temperature resistance of the anti-water-lock workover fluid is achieved.

The present invention relates to a method for preventing viscosity decrease of konjac powder during a storage process at room temperature. The method comprises the following steps: an ethanol solutionis mixed with the konjac powder by means of mist-spraying in a ratio; the mixture is stirred evenly to prepare a mixed material; then the mixed material is put still; the put still mixed material isplaced in an explosion-proof microwave vacuum drying device; the drying device is turned on; a power of the drying device is 20-60 KW, a temperature of a microwave drying work is adjusted to be 60-90DEG C, and microwave drying working time is 180-600 s; after the drying is completed, the dried material is crushed; the crushed material is sieved via a 40-120-mesh sieve; and the konjac powder withno viscosity decrease at room temperature in a storage condition is prepared. Viscosity of the treated konjac powder is kept not decreased after being placed in a room temperature condition for 12 months. The method overcomes problems that in the prior art a cold storage method is long in time-consuming, high in energy consumption, high in costs, insignificant in effects, etc. Besides, the methodis fast, easy to operate, green and environmentally protective, and can be used for large-scale storage of the konjac powder.

The invention relates to a plate material, in particular a stove cover plate, made of a base material (10) and at least one coating (12, 14, 16). In order to provide a generic type of lightweight, stabile and temperature-resistant plate material, it is proposed that the base material (10) be designed as a pressed material comprising a ceramic matrix (18) and stiffening fibers (20).

The invention discloses a lead-carbon colloid storage battery, and the storage battery comprises positive lead paste, negative lead paste, a positive grid and a negative grid; the positive lead pastecomprises the following components: lead powder, dilute sulfuric acid, red lead, antimonous oxide, stannous sulfate, graphene conductive slurry, short fibers and pure water; the negative lead paste comprises the following components: lead powder, dilute sulfuric acid, barium sulfate, an organic expanding agent, lignin, treated graphene conductive paste, nano activated carbon, a silane coupling agent, short fibers and pure water; graphene conductive slurry is sprayed on the front and back surfaces of the positive and negative grids respectively, so that the positive and negative grid frames andthe transverse and vertical ribs are coated with graphene layers, and high-temperature curing is performed to form a graphene coating. According to the invention, the plated graphene grid has a highbinding force with the lead plaster, the lead plaster can be effectively prevented from falling off, the prepared graphene-containing positive and negative lead plaster has higher conductivity, and the charging acceptance capability and high-current charging and discharging capability of the storage battery are improved; meanwhile, sulfation of the negative electrode can be effectively inhibited,and the cycle life of the storage battery is prolonged.

An oil distribution structure with the automatic gap compensation function comprises an inner oil distribution sleeve and an outer oil distribution sleeve. The inner oil distribution sleeve is cylindrical and a spindle is sleeved with the inner oil distribution sleeve. The inner oil distribution sleeve is sleeved with the outer oil distribution sleeve. The oil distribution structure is further provided with an oil inflow core pipe penetrating the inner oil distribution sleeve and the outer oil distribution sleeve. An oil inflow gap is formed between the inner oil distribution sleeve and the outer oil distribution sleeve. Sealing structures are arranged at the two ends of the oil inflow gap between the inner oil distribution sleeve and the outer oil distribution sleeve. The outer surface of the inner oil distribution sleeve is provided with at least one inner sleeve concave face. The inner surface of the outer oil distribution sleeve is provided with at least one outer sleeve concave face, wherein the outer sleeve concave faces correspond to the inner sleeve concave faces. Therefore, through clearance fit, when the spindle rotates at high speed, a hydrostatic bearing is formed by high-pressure oil in the gap between the spindle and the inner oil distribution sleeve, high-pressure oil between the inner oil distribution sleeve and the outer oil distribution sleeve guarantees that the gap between the inner oil distribution sleeve and the spindle is within the normal work range, and the abrasion of the spindle can be effectively reduced.

The invention discloses a process for producing nodular cast iron camshafts by means of iron-mold clamped sand molds. A specialized iron mold for gray cast iron casting is adopted, and a specialized casting frame is manufactured, the specialized iron mold is placed on the specialized casting frame, and a double-side horizontal sand ejecting molding machine is used for producing coated sand molds;a ceramic filter sheet and a glass fiber filter screen are placed in each sand mold, and the left sand mold and the right sand mold are bonded into a complete sand mold; the sand molds are placed in the middle of the iron mold one by one, and the sand molds are accurately embedded into a cavity of the iron mold; and iron water subjected to the spheroidization treatment is poured according to eachsand mold, and then castings are separated. By adopting the process, the production efficiency is greatly improved, the process yield is greatly increased, and the process cost is reduced; the defectrates of product size, shrinkage porosity, bending, shrinkage holes, slag inclusion, air holes, sand holes, cold shuts, mismatches and box expansion are eliminated, the disqualification of the metallographic structure is avoided, and the disqualification of mechanical performance is avoided; and the energy conservation and emission reduction are realized, and the production cost is reduced.

The invention relates to the technical field of oil field development, and particularly relates to a temperature-resistant clay anti-swelling agent for acidification in an oil field. The clay anti-swelling agent is prepared by carrying out reaction on 1,5-dihydroxynaphthalene and an acrylic acid to generate an intermediate; then carrying out reaction on the intermediate and aniline through amidation reaction to prepare the clay anti-swelling agent, wherein the molar ratio of 1,5-dihydroxynaphthalene to the acrylic acid to the aniline is 1:(0.9 to 1.8):(1.1 to 1.4), preferably 1:1.2:1.2. The clay anti-swelling agent is characterized in that the anti-swelling agent has the advantages of simple preparation process, low cost, strong adaptability, strong stability, high temperature resistance and anti-swelling effect; the highest temperature resistance is up to 180 DEG C, and the anti-swelling ratio is up to 95 percent or above. Therefore, the temperature-resistant clay anti-swelling agent can be widely applied to a clay anti-swelling technique for acidification in the oil field.

The invention relates to the technical field of oilfield development, in particular to a clay anti-swelling agent for high temperature oilfield acidification. The clay anti-swelling agent is preparedby: reacting 1-naphthol with acrylic acid to generate naphtyl acrylate, and then carrying out amidation reaction with aniline, wherein 1-naphthol, acrylic acid and aniline are in a mole ratio of 1:0.9-1.5:1.1-1.3, preferably 1:1.1:1.2. The clay anti-swelling agent has the characteristics of simple preparation process, low cost, strong adaptability, strong stability, high yield, high temperature resistance and good anti-swelling effect, has yield of over 90%, can tolerate a highest temperature up to 210DEG C, and has anti-swelling rate up to 90% or more. Therefore, the clay anti-swelling agentprovided by the invention can be widely applied in clay anti-swelling process of oilfield acidification.

The invention discloses a stabilizer for eliminating corrugated expansion joint vibration. The stabilizer comprises a steam pipe provided with an insulation layer and is characterized in that the steam pipe is provided with a thrust ring, a baffle and a force bearing ring, the insulation layer is arranged on the steam pipe on two sides of the baffle, a casing pipe is arranged outside the insulation layer, the baffle is a ring sleeving the steam pipe, the excircle of the ring is larger than the diameters of the thrust ring and the force bearing ring, the baffle is in sliding connection with the steam pipe, the thrust ring and the force bearing ring are sleeves arranged on two sides of the baffle, and the thrust ring and the force bearing ring are fixedly connected with the steam pipe and the casing pipe respectively through wing plates. Compared with the prior art, the stabilizer limits the compensation of a corrugate pipe after initial thermal elongation, prevents the corrugated pipe from continuing to expand after initial thermal elongation, avoids corrugated pipe vibration, and effectively prevents an expansion joint corrugated pipe in a heat supply network from being damaged due to premature fatigue. The stabilizer is easy in structure and convenient to manufacture and mount, and further improves the safe operation and economic benefits of pipeline networks.