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85results about How to "Avoid deformation effects" patented technology

Combined fishnet square net cage used for mariculture

InactiveCN102239817AReduce deformation and volume lossImprove volume retentionClimate change adaptationPisciculture and aquariaDouble rowSeawater
The invention discloses a combined fishnet square net cage used for mariculture, relating to a mariculture net cage. In the combined fishnet square net cage, a cupronickel B10 stretching net, a brass HA177-2 stretching net, a high-strenght single-fast-knot polyethylene fibre net, a high-strength nylon warp knitting net, a fishing high-strength polyethylene monofilament rope, a galvanized iron pipe and a cylindrical foam buoy are adopted. The combined fishnet square net cage is characterized in that a frame system used for the net cage is of a square double-row galvanized iron pipe frame structure. In a fishnet system used for the net cage, a double-layer synthetic fibre fishnet serves as a first fishnet, a combined copper alloy stretching net serves as a second fishnet, and the first fishnet and the second fishnet are in longitudinal semi-soft connection; a square synthetic fibre fishnet is in a combined fishnet form of the fishnets used for the net bottom of the net cage; the combined fishnet used for the net bottom of the net cage is hung on the square double-row galvanized iron pipe frame; and the square double-row galvanized iron pipe frame of the net cage is connected with a float line frame of a mooring system by a mooring rope.
Owner:EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI

Machining method for stator of all-metal screw pump for thickened-oil thermal exploitation

InactiveCN102139440AAvoid high cutting forcesAvoid deformation effectsLinear motionEngineering
The invention relates to a machining method for a stator of an all-metal screw pump; the adopted machining method is as follows: firstly, a central hole is machined on a metal bar, and then spiral grooves are machined by an electric spark machining method. A plurality of electrode tips, the intervals of which are equal to screw pitches of the spiral grooves, are arranged on a thinner steel tube; the steel tube with the electrode trips penetrates into a machined inner hole; and both ends of the steel tube are tightly clamped by insulation clamping heads and stretch toward one side or two sidesso as to ensure the straightness of the steel tube, thereby ensuring the interval between each the electrode tip and a workpiece to be equal in the overall length range. A workbench of an electric spark machine tool does a linear motion; the stator workpiece of the metal screw pump does a helical motion; the strict transmission ratio is ensured between the workbench and the stator workpiece of the metal screw pump, namely, the workpiece rotates for a circle, and the workbench walks for a screw pitch; as the number of the electrode tips is determined according to the number of the screw pitches, all electrodes simultaneously work and respectively finish the machining for one screw pitch so as to simultaneously finish the overall machining for internal spiral grooves of the stator. Electricsparks are used for machining the stator of the metal screw pump; as the electrodes do not contact the workpiece, a larger cutting force and the deformation of a cutter can be prevented when the cutter directly contacts the workpiece, thereby ensuring the machining precision. The machining difficulty can be greatly reduced; and the machining precision is improved.
Owner:新疆华易石油工程技术有限公司

Acoustic wave transducer

The invention provides an acoustic wave transducer. The transducer comprises a notched shell, a receiving transducer module, a transmitting transducer and a bag, wherein the notched shell is provided with slotted holes for improving the acoustical insulation effect of the notched shell; the receiving transducer module is sleeved in the notched shell and comprises more than two receiving transducers sequentially connected together in series through screw threads; the transmitting transducer of which one end is fixedly connected to the interior of the notched shell is sleeved in the notched shell and arranged on one side of the receiving transducer module; the bag is a flexible part, and is sleeved in the notched shell and wrapped around the receiving transducer module; and oil is filled in the bag. In the transducer, as the receiving transducer module comprises more than two receiving transducers sequentially connected in series through the screw threads, each transducer can be assembled singly and conveniently; the deformation of each transducer is not accumulated during the deformation of the notched shell, so the overall deformation of the receiving transducer module is reduced; in addition, only one end of the transmitting transducer is fixedly connected with the notched shell, so the influence of the deformation of the notched shell on the transmitting transducer can be effectively avoided.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Hydrogen fuel cell unmanned aerial vehicle high-pressure gas cylinder valve

PendingCN108953994AMeet the best needsBest Demand GuaranteeAircraft componentsVessel mounting detailsGas cylinderHydrogen fuel cell
The invention relates to the technical field of unmanned aerial vehicle equipment, and particularly discloses a hydrogen fuel cell unmanned aerial vehicle high-pressure gas cylinder valve. The hydrogen fuel cell unmanned aerial vehicle high-pressure gas cylinder valve comprises a valve body base (1); a first mounting cavity (2) communicating with the interior of the valve body base is arranged inthe side wall of the valve body base and is internally provided with a high-pressure stop valve (3); one end of the high-pressure stop valve is located outside the valve body base; the other end of the high-pressure stop valve is located inside the valve body base; the two ends of the valve body base are provided with a first connector (4) and a second mounting cavity (5) separately; the second mounting cavity and the first mounting cavity communicate with each other through a first channel (6) arranged in the valve body base; the first connector is connected with a high-pressure gas cylinder(7); and a reducing valve (8) is arranged inside the second mounting cavity and provided with a gas outlet connector (9). The hydrogen fuel cell unmanned aerial vehicle high-pressure gas cylinder valve has the characteristics of being small in size, good in stability, high in control efficiency and good in safety.
Owner:德清天旭力精密机械制造有限公司

Internal strain monitoring device and method for steel pipe concrete

InactiveCN109115170ATrue reflection of strainEliminate disturbanceMeasurement devicesData acquisitionEngineering
The invention discloses an internal strain monitoring device and method for steel pipe concrete. The device is composed of a strain sensing module, a positioning module and a data collection module; the strain sensing module is composed of a test base body, a strain rosette, a lead and a binding post; the positioning module is composed of a positioning pipe, a fixed handle, a movable handle, a torsion spring, a line ranger, an extended positioning rod, a wire rope, a rotating shaft, a spring and a calibrated scale; and the data collection module is composed of a data collector and a computer.The test base body is fixed in a predetermined position by the positioning module, the fixed handle is rotated to adjust the angle of the test base body, and concrete is placed and maintained; and thestrain of the test base body is monitored, and further strain in the predetermined position in the steel pipe concrete is monitored. The test base body is positioned accurately via the positioning module, disturbance of concrete placement to the position of the strain sensing module is eliminated, the problem that a present strain test component tends to offset in a sample is solved, and the device and method can be widely applied to the field of internal strain monitoring and test of concrete.
Owner:SHANDONG UNIV OF SCI & TECH

Light guide rail component with elastic adapting function

PendingCN108100309AAchieve installationSatisfy on-orbit operation requirementsCosmonautic partsArtificial satellitesElectricityFull life cycle
The invention relates to a light guide rail component for realizing cabinet and load installation. The guide rail component comprises a guide component, a back insertion component and a power assisting component. The inner wall of a cabinet and the side wall of a load are in slide connection through the guide component, the back of the cabinet and the back of the load are connected through the back insertion component, one end of the power assisting component is connected with the front end of the load, and the other end of the power assisting component is connected with the back of the cabinet. The light guide rail component has advantages that an independent mechanical system is formed by the guide component, the back insertion component and the power boosting component, mounting of thecabinet and the load can be well realized, and a series of effective loads in different standards can be provided with corresponding mechanical and electrical interfaces; besides meeting of upward mechanical conditions, corresponding man-machine ergonomic design is carried out so as to meet the requirement on on-orbit operation of astronauts; in addition, the guide rail component is available foron-orbit reconstruction and supportive to on-orbit mounting, experiments, replacement, repair and maintenance of different effective load units in a full life cycle.
Owner:北京天宫空间应用技术有限公司

Oxygen respirator with novel ventilation structure

The invention discloses an oxygen respirator with a novel ventilation structure, and belongs to the technical field of emergency rescue equipment. The oxygen respirator with the novel ventilation structure comprises a respirator main body, wherein the respirator main body at least comprises an air bag assembly, an oxygen tank, a cooling tank and a cleaning tank; the outer end of the air bag assembly is provided with an air bag body; a plurality of air vents are formed in the lower end of the air bag body; and the lower end of the cooling tank and/or the cleaning tank communicates with the airvents. According to the technical scheme, a structural design that the ventilation structure is arranged at the lower portions of the tank bodies, such as the oxygen tank, the cooling tank, the cleaning tank, is specifically disclosed. Through the structure design, the influence caused by the impact can be avoided, besides, the traditional way by connecting pipelines for ventilation is abandoned,and ventilation is directly carried out by the air vents formed in the lower end of the air bag body, so that the deformation influence of the impact on the pipelines is further avoided, the influenceof temperature on the ventilation structure is reduced, and the whole equipment is more stable and assembly is simpler and more convenient.
Owner:ZHEJIANG HENGTAI SAFETY EQUIP

Manufacturing method for honeycomb structure

The invention provides a manufacturing method for a honeycomb structure. The manufacturing method comprises the steps that a corrugated ribbon is provided, wherein the corrugated ribbon is constitutedthrough alternative connection of concave surface sections and convex surface sections, and any one of the concave surface sections and any one of the convex surface sections in the corrugated ribbonare used to form a honeycomb core grid after closed loop connection; the corrugated ribbon is annularly coiled axially with an axis as the center, so the convex surface sections and the concave surface sections can overlay to constitute a plurality of honeycomb core grids, and then the sealed loop is constituted by the honeycomb core grids; and overlaid positions between the sections of the corrugated ribbon are fixedly connected, so the honeycomb structure constituted through successive connection of the honeycomb core grids is obtained. The manufacturing method provided by the invention isdifferent from traditional honeycomb processing in that overall cutting is carried out after processing of the honeycomb structure, so a process for single sheet cutting is omitted during production,production efficiency is greatly increased and manpower cost is reduced; the cutting process and influences of cutting on belt deformation are avoided, so product quality is greatly improved; and themanufactured honeycomb cores are continuous and circulative as a whole.
Owner:BEIJING ANDER TECH

Blast furnace roof flange installing method

The invention relates to a blast furnace roof flange installing method. Preheating is conducted to 190-210 DEG C before welding; rib plates are adopted for strengthening a flange for restraining deformation, and the rib plates are arranged along the periphery of a furnace roof at equal intervals; preliminary leveling is conducted on the flange, and after leveling, welding lines between the rib plates and a furnace body are leveled; accurate leveling is conducted on the flange, four-point leveling is conducted on the flange along the flange center according to cross symmetry, vertical welding lines between the corresponding rib plates in the four-point direction and the flange are subjected to spot welding, and after accurate flange leveling and spot welding of the vertical welding lines between all the rib plates and the flange are gradually finished according to the above manner, the vertical welding lines between all the rib plates and the flange are welded through a skip reverse welding method; and during flange welding, welding is synchronously conducted along the flange center according to the four-point positions of the cross center line, a segmented reverse welding method isadopted in welding, and synchronous reversing is conducted in the welding process. In the flange welding process, a balance level and an invar ruler are adopted for welding deformation monitoring. Bymeans of the blast furnace roof flange installing method, the flange installing quality can be improved, the construction period is shortened, and the construction cost can be better reduced.
Owner:SHANGHAI ERSHIYE CONSTR CO LTD +1

Wire sealing device and layout method for concrete shield/TBM segment embedding monitoring instrument

The invention discloses a wire sealing device and a layout method for a concrete shield/TBM segment embedding monitoring instrument. The wire sealing device comprises a sealing cavity, wherein a screw-tight sealing end is installed at one end of the sealing cavity, and a wire jack is drilled on the end surface of the sealing end; a sealing cover is installed at the other end of the sealing cavity,and the sealing cover comprises a cover body, an elastic positioning block provided at the bottom end inside the cover body, and a plug-in sealing block provided inside the cover body and connected together with the elastic positioning block; the wire end of the embedded monitoring instrument passes through the wire jack, and the free-length wire is encapsulated in the sealing cavity. The wire sealing device and layout method for the concrete shield/TBM segment embedding monitoring instrument provided by the invention can bring together the wires of the monitoring instruments embedded in theTBM segments to facilitate positioning and searching, and can also ensure that the sensors installed on the segments respond to the stress and strain of the segments to the maximum to improve the connection rate of the monitoring instruments and the accuracy of the monitoring results.
Owner:STATE KEY LAB OF SHIELD & TUNNELING TECH +1
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