503results about How to "Strong pressure capacity" patented technology

The invention discloses a bulking pearlite and making method and application in the high-strength low-density oil well cement, which is characterized by the following: adopting low-temperature bulking and high-temperature glass technique; allocating raw material sequently; heating to form powder; bulking under low-temperature; glassifying under high temperature; cooling; making the grain size at 100-120 order with obturator foramen rate not less than 98% and sucking rate not more than 30%; possessing bearing pressure and excellent slurry fluidity.

The invention relates to an ultralow-density oil-base drilling fluid. The invention is characterized in that the ultralow-density oil-base drilling fluid is prepared from the following raw materials: base oil, a density reducer, a suspension stabilizer, an emulsifier, a tackifier, a fluid loss additive, a flow pattern regulator, an alkalinity regulator and a calcium chloride water solution. The base mixed oil is prepared by the following steps: mixing 3# white oil, 5# white oil and natural gas prepared oil, adding a flash point enhancer while stirring, and standing for 0.5-1 hour; and stirring at low speed at the temperature of 30-40 DEG C, and slowly adding oil-soluble nano fumed silica while stirring, wherein the addition process is controlled at 2-3 hours. The ultralow-density oil-base drilling fluid has the advantages of favorable emulsifying stability, favorable rheological properties, high inhibition property for mud shale, high emulsion-breaking voltage, low filter loss, low density (0.75-0.90 g/cm<3>), and high sand carrying and pressure bearing capacities, is beneficial to cleaning the borehole and enhancing the mechanical drilling speed, solves the problem of severe lost circulation in the low-pressure formation and long-section shatter zone formation, and is especially suitable for low-pressure oil gas pools and depletion water-sensitive formations.

The composite steel/plastic pipe producing process includes longitudinally bending or spirally winding steel plate with holes and welding to form metal pipe skeleton, separating the welded metal pipe skeleton from atmosphere with inert air, extruding the core layer plastic pipe inside the metal pipe skeleton, extruding the outer layer plastic pipe outside the metal pipe skeleton and making the inner layer and the outer layer of plastic pipe combined into one integral via the holes in the metal skeleton. The present invention also provides one composite steel/plastic pipe producing line. The produced composite steel/plastic pipe has high bearing capacity and firm combination of the inner and outer plastic layers.

The invention relates to a loop heat tube condenser applicable to arrangement in a circular ring-shaped chamber body. The condenser comprises a plurality of condensing tube components, circular arc-shaped steam headers and circular arc-shaped liquid headers; each condensing tube component comprises n condensing tubes, one straight steam header and one straight liquid header; the n condensing tubes are equal in length and are arranged in parallel; the straight steam headers communicate with one end of each of the n condensing tubes; the straight liquid headers communicate with the other end of each of the n condensing tubes; the condensing tube components are arranged around the horizontal axis of the circular ring-shaped chamber body so that all axes of the n condensing tubes in each condensing tube component point to the axis of the circular ring-shaped chamber body; the straight steam headers in the condensing tube components can communicate with one another through the circular arc-shaped steam headers; the straight liquid headers in the condensing tube components can communicate with one another through the circular arc-shaped liquid headers; the condenser has the advantages of reducing heat resistance, remarkably improving the heat exchange capability, being adaptive to arrangement in an upper space of a horizontal annular chamber, fully utilizing the space of a circular ring-shaped columnar chamber body and realizing high performance and compactness.

Method and arrangement for providing liquid fuel rocket engine member (10). The member forms a body of revolution having an axis of revolution and a cross section that varies in diameter along said axis. The wall structure includes a plurality of cooling channels (11). The outside of the wall structure includes a continuous sheet metal wall (14). The cooling channels (11) are longitudinally attached to the inside of the sheet metal wall. The method for manufacturing the rocket engine member (10) includes the steps of forming a sheet metal wall (14) having a wall section corresponding to the desired nozzle section, providing a plurality of channel members (15), and attaching the channel members (15) to the inside of the sheet metal wall (14).

The invention discloses a steam turbine structure, which comprises an ultrahigh pressure cylinder, a reheating high-pressure cylinder, one or two reheating intermediate-pressure cylinders and two or three low-pressure cylinders. The ultrahigh pressure cylinder is a double-layer cylinder, an outer cylinder of the ultrahigh pressure cylinder consists of two cylindrical blocks which are connected through axial bolts, and a rotor in the ultrahigh pressure cylinder is a small-diameter rotor. Since the axial action area of the ultrahigh pressure cylinder is much smaller than that of a horizontal central parting surface, the ultrahigh pressure cylinder in the above structure has higher bearing capacity as compared with that of an existing ultrahigh pressure cylinder block which is divided into an upper half structure and a lower half structure by the central parting surface, and further, an axial flange can be arranged in a lower-pressure area, working stress of the axial flange can be greatly reduced, bearing capacity of the ultrahigh pressure cylinder can be improved further, so that the ultrahigh pressure cylinder can bear higher steam pressure.

The invention adopts hollow polyester fiber, polyester short fiber and ES fiber according to mixture ratio of 1-4:1-4:2-8, including the steps of loosening-> quantitative feeding-> hot melting->cold roll forming->hot rolling->air cooling->trim cutting. The fiber of the invention is conglutinated after hot melting treatment; therefore, fiber pad has good toughness and uniform density and stable structure; the produced filtering material has large pore space, good loading capacity which is difficult to be deformed with small resistance and large dust holding performance and good filtering effect.

The invention discloses an experimental device for research on hydrogen combustion in a nuclear power plant containment shell. The experimental device comprises a safety tank, an experimental pipe section, a gas supply system, an exhaust system, a heating and heat preservation system, a spray system, a data acquisition system, a control system, an igniter and a high-speed camera. The experimental pipe section is installed inside the safety tank. A barrier which is easy to replace is arranged inside the experimental pipe section. Through the gas supply system, hydrogen, the air and water vapor are uniformly mixed in advance; and then, the safety tank or the experimental pipe section is filled with the gas mixture for a combustion experiment. The exhaust system is used for discharging exhaust gas in the experimental device. The heating and heat preservation system can control initial gas temperature. The spray system provides a spray water environment for the experimental device. The data acquisition system acquires and processes a sensor signal to obtain experimental data. Through the control system, each subsystem and equipment of the experimental device are monitored and controlled. The experimental device of the invention has advantages of high safety and multiple experimental functions, etc., and can be used for research on combustion characteristics of hydrogen in the nuclear power plant containment shell.

The invention discloses an urban road early runoff rainwater pollutant interception treatment device. The urban road early runoff rainwater pollutant interception treatment device is characterized by comprising a water inlet pollutant interception diversion module (1), a settling pond module (2), a clear water pond module (3) and a self-controlled water lifting module (4); a water outlet of the water inlet pollutant interception diversion module (1) is connected with a water inlet of the settling pond module (2), a water outlet of the settling pond module (2) is connected with a water inlet of the self-controlled water lifting module (4), a water outlet of the self-controlled water lifting module (4) is connected with a water inlet of the clear water pond module (3) and an irrigation nozzle of a greenbelt surface (5), and a water outlet of the clear water pond module (3) is communicated with the self-controlled water lifting module (4). The urban road early runoff rainwater pollutant interception treatment device achieves cyclic utilization of rainwater resources, is environmentally friendly, efficient, simple and compact in structure, low in cost, economical, affordable, easy to use and feasible, and meets the requirement for ecological water utilization.

The invention discloses a sintered brick prepared from wastes. The sintered brick comprises the following raw materials in percentages by weight: 92-98% of solid wastes and 2-8% of water, wherein the solid wastes comprise the following components: 25-35% of ceramic wastes, 2-5% of cement dust, 22-30% of coal slag, 5-30% of coal gangue and 10-15% of building river silt. The invention also discloses a preparation method of the sintered brick prepared from wastes. By the preparation method, the brick prepared from the wastes, which has the advantages of large strength and good plasticity, can be obtained and thus the problem of stacking of wastes in multiple industries is solved and the environmental damage is decreased.

A nonuniform loading test device for simulating floor water inrush comprises a test bed system, a loading system and a test system, wherein the test system comprises a pressure cell and a displacement meter; the test bed system comprises a test bed base, a test bed main body and two hydraulic loading system frames; the test bed main body is in an enclosed frame structure comprising a bottom beam, a top beam, two side beams, a front panel and a rear panel; the loading system comprises a bottom pressurizing system, a top pressurizing system and a hydraulic loading system; the hydraulic loading system comprises two groups of water bags; each group of water bags comprises a plurality of water bags; each water bag is filled with water of a certain volume; an inner cavity space of the test bed main body between the two groups of water bags is filled with a similar material test model. The device has the advantages that an active hydraulic environment can be provided to a floor; uniform hydraulic distribution and nonuniform loading are achieved; an enough amount of deformation of the similar material test model is provided; a deformation and damage rule of the floor in the different hydraulic environments can be researched; the test reliability and practicability are improved.

The invention discloses a medium pressure chromatogram purification column, consisting of three parts: a column body connected with an outlet pipe, a sealing inner plug connected with an inlet pipe and a perforation gland. Two filtering sheets are respectively arranged at an outlet end and an inlet end in the column body so as to prevent the filler in the column from overflowing under pressure. The port of the inlet end of the column body is hermetically connected with a groove of the sealing inner plug. The perforation gland can be screwed on the column body by hands so as to realize the sealing. The invention has reasonable structure, convenient industrial production and strong bearing capacity. The process of mounting and dismounting is simple and can be used repeatedly. The medium pressure chromatogram purification column can be used as a disposable object because of low cost.

The invention aims to provide a high-pressure resistant lamella heat exchanger adopting round corrugated plates, which includes a shell, cover plates, a corrugated plate lathed bundle, flow guiding blocks and support plates, wherein the corrugated plate lathed bundle includes corrugated plates and is fixed in the shell through the support plates; the two ends of the shell are sealed by the cover plates; a shell side outlet and a shell side inlet are arranged in the shell; a plate side inlet and a plate side outlet are arranged in the cover plates; an annular zone between the shell and the corrugated plate lathed bundle is divided into a shell side inlet chamber and a shell side outlet chamber through the flow guiding blocks; the shell side inlet is communicated with the shell side inlet chamber; the shell side outlet is communicated with the shell side outlet chamber; angular holes are formed in the corrugated plate lathed bundle; and the plate side inlet is communicated with the plate side outlet through the angular holes in the corrugated plate lathed bundle. The high-pressure resistant lamella heat exchanger provided by the invention has the advantages of high pressure bearing capability, high heat exchange efficiency, compact structure, big heat transfer area in a unit volume, wide material selection range, wide application range, as well as simplicity in processing and installation.

The invention discloses an underground pipe gallery formwork. The underground pipe gallery formwork comprises side wall formworks, a top wall formwork and corner formworks used for connecting the sidewall formworks and the top wall formwork. The top wall formwork is composed of a plurality of aluminum alloy formwork units. Each aluminum alloy formwork unit comprises a plurality of parallel aluminum alloy flat plates with the side edges being detachably connected, and a transverse top formwork keel which is detachably connected with the ends of the multiple aluminum alloy flat plates. Supporting heads with the top faces supporting a pipe gallery reinforced concrete top plate are formed in gaps of every two adjacent aluminum alloy formwork units. The supporting heads and the two adjacent top formwork keels are detachably connected, and the top formwork keels and the corner formworks are also detachably connected. The supporting heads are fixedly connected with stand columns supported onto the ground. The other end, far away from the corresponding top formwork keel, of each aluminum alloy formwork unit is detachably connected with the top formwork keel of another adjacent aluminum alloy formwork unit. The underground pipe gallery formwork can be conveyed and transported conveniently, and the turnover frequency of the formwork is high.

The invention discloses a novel precision-type high-pressure-resistant rotary compensator and belongs to the technical field of heat power pipeline compensation device structures. The novel precision-type high-pressure-resistant rotary compensator comprises an outer pressing cover flange, a sealing piece pressing flange and a reducer pipe, wherein the outer pressing cover flange is integrated by fixing a stud, a nut A and a nut B; an inner pipe with an inner pipe convex outer ring is inserted into the reducer pipe and is spirally connected with the reducer pipe; a structure that the reducer pipe, the outer pressing cover flange, the sealing piece pressing flange and the inner pipe can coaxially, synchronously, entirely, relatively and rotatably move along the radial direction by virtue of the rotation of a threaded area when being pushed by radial heat expansion force is formed, and the reducer pipe, the outer pressing cover flange and the sealing piece pressing flange are fixed integrally. With the structure, the novel precision-type high-pressure-resistant rotary compensator has the advantages that the coaxial accurate is high, the pressure bearing capacity is higher, the flowing direction of a medium is not limited, and a pipeline is safer to operate and convenient to maintain.

The invention provides an inflating device for operation in a shoal environment. The inflating device comprises an air cushion body, an inflating pipe, an inflating and deflating machine and an inflating valve cap. The air cushion body consists of an upper rectangular air cushion outer layer, a lower rectangular air cushion outer layer and reinforcing sheets adhered between the upper and lower rectangular air cushion outer layers which are identical in shape. The air cushion body is adhered and partitioned into a plurality of air chambers which are identical in shape and arrayed closely by the reinforcing sheets, and each two adjacent air chambers are communicated. An inflating valve is optionally arranged on one of the two outmost air chambers in the array direction of the multiple air chambers. The inflating and deflating machine is connected with the inflating valve through the inflating pipe and used for inflating the air chambers or pumping air from the air chamber through the connected inflating pipe. After inflating/deflating of the air cushion body is completed, the inflating valve cap is mounted on the inflating valve to seal the air chamber. The inflating device is capable of floating on a shoal, changeable in length according to practical needs, high in air tightness and pressure bearing capacity and convenient to maintain.

The invention relates to a method for producing composite tube that formed by welded metal tube and polymer, wherein it comprises a, longitudinally or screw coiling the metal band into cylinder metal tube, whose joint is connected; b, welding the joints; c, using extruding head to extrude the polymer when the welding seam is cooled, to be coated on the inner wall of metal tube form fusion corn layer; and using the compressed air of extruder to blow the non-cooled corn layer to make it contact the inner wall of metal tube; d, coating adhesive or plating adhesive powder on the outer wall of metal tube, and extruding polymer outer layer above the adhesive, cooling and shaping to obtain the composite tube. The invention also provides a relative device.

The invention discloses a high-performance shaft-end O-shaped rubber sealing ring. The high-performance shaft-end O-shaped rubber sealing ring is prepared from the following raw materials in parts by weight: 30-45 parts of tetra-propylene fluorine rubber, 15-25 parts of acrylonitrile-butadiene rubber, 20-40 parts of polyether urethane rubber, 20-40 parts of isoprene rubber, 2-5 parts of 1,1-di-(tert-butylperoxy)-3,3,5-trimethylcyclohexane, 0.5-1.5 parts of 1,2-polybutadiene, 1-1.8 parts of trimethylolpropane triacrylate, 45-55 parts of modified nano-montmorillonite, 20-40 parts of white carbon black, 5-15 parts of polytetrafluoroethylene fiber, 5-15 parts of carbon fiber, 5-15 parts of nano-kaolin, 5-10 parts of calcined clay, 10-20 parts of nano-calcium carbonate, 0.8-2.8 parts of isopropyl tri(dioctylpyrophosphate)titanate, 0.5-2 parts of triphenyl phosphate, 0.5-2 parts of dibutyl phthalate, 0.5-2 parts of microcrystalline wax and 1-1.8 parts of anti-aging agent.