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192 results about "Downward displacement" patented technology

In a chemical reaction when the water is displaced downward by the gas through the delivery tube, collecting in the jar (filled with water), this process is called downward displacement of water. This process is used for collecting gases which are less dense and insoluble in water.

Method for increasing condensate oil recovery ratios of condensate gas reservoirs by means of gas injection vertical displacement

The invention discloses a method for increasing condensate oil recovery ratios of condensate gas reservoirs by means of gas injection vertical displacement, and belongs to the technical field of condensate gas field development. The method includes selecting proper injected gas according to a principle that a gravitational differentiation phenomenon is obvious when a density ratio of the preferable injected gas to fluid of the gas reservoirs is lower than 0.75 under a formation condition in gas injection physical model experiments and actual production; determining injection and production well locations, perforation intervals, well patterns and well spacing by the aid of a kinetic mechanical analysis process for micro-elements of the injected gas so as to effectively form artificial gas caps in gas injection procedures; determining critical gas production rates according to a critical production rate correction formula. The critical gas production rates are used for preventing increase of gas-oil ratios due to coning of the injected gas. The method has the advantages that the artificial gas caps can be formed at high structural positions by the injected gas, condensate gas can be subjected to vertical downward displacement by the aid of the injected gas, accordingly, the sweep efficiency of the injected gas is close to 100%, and the injected gas utilization rate and the final condensate oil recovery ratios can be obviously increased.
Owner:PETROCHINA CO LTD

On-line and real-time measuring device for pressure and torque for friction stir welding

The invention relates to an on-line and real-time measuring device for friction stir welding by taking a numerical control machine tool as a body. According to the on-line and real-time measuring device, the axial pressure and the torque of a stirring head can be detected in real time in the welding process, and the pressure and the friction torque can be controlled by adjusting the downward displacement amount of the stirring head. The on-line and real-time measuring device comprises an on-line collecting and processing module, a signal display and communication module and an upper computer module; two signal real-time sensing units in the on-line collecting and processing module acquire and process detection signals in real time and convert the detection signals into numerical value information of the pressure and the torque; the signal display and communication module is signal digital quantity liquid crystal display, is in communication transmission with an upper computer and has the threshold value monitoring and alarming function; and the upper computer module is used for being in communication with the signal display and communication module, setting the ''zero point'' and the ''threshold value'' of the pressure and the torque and storing the measured numerical value in real time. The on-line and real-time measuring device has the advantage that the pressure and the torque in the friction stir welding process can be detected and displayed in real time, and a detection method is provided for constant-pressure and fixed-torque welding.
Owner:SHENYANG LIGONG UNIV

Electrolyzer for use in electrolytic in-process dressing metallic bond pellet grinding processing

InactiveCN103072048ASpray evenly and volumizeImprove flatnessElectrolysisProgrammable logic controller
The invention discloses an electrolyzer for use in electrolytic in-process dressing metallic bond pellet grinding processing, which belongs to the field of grinding precision processing. A grinding disk of which the upper surface is embedded with grinding pellets is taken as an anode, and is driven to rotate by a machine tool main shaft; a workpiece disk and a workpiece are arranged in a chuck; a pressure head is used for driving the chuck to move transversely in a reciprocating way on the grinding disk to grind the workpiece; stainless steel boxes are taken as cathodes and are symmetrically distributed on both sides of the pressure head, and a micro transmission mechanism is arranged to realize fine adjustment of upward and downward displacement of the stainless steel boxes; through sensors, a PLC (Programmable Logic Controller), stepping motors and the micro transmission mechanism, the distances between the bottoms of the stainless steel boxes and the grinding disk are always kept about 1 millimeter; and moreover, the bottom surfaces of the stainless steel boxes are provided with grinding liquid spray holes which are distributed uniformly, so that an interpolar electrolytic in-process dressing function, i.e. anode dissolving, is performed fully and stably, and ultra-precision grinding processing of the workpiece is realized.
Owner:BEIJING UNIV OF TECH

Three-dimensional modeling method, device and equipment, and computer readable storage medium

The embodiment of the invention discloses a three-dimensional modeling method, a three-dimensional modeling device, three-dimensional modeling equipment, and a computer readable storage medium. The method comprises the steps of generating a two-dimensional contour line of an object to be modeled according to the operation that a user clicks a coordinate point in a three-dimensional coordinate system, wherein a one-dimensional coordinate in each coordinate point is set to be 0; and then according to upwards and downwards displacement information of a contact of the user on a plane perpendicularto the two-dimensional contour line, adjusting the height of the two-dimensional contour line on the plane, so as to convert a two-dimensional pattern into a three-dimensional pattern, thus generating a three-dimensional model of the object to be modeled. According to the technical scheme provided by the invention, a three-dimensional model of the object to be modeled is drawn in a human-computerinteraction manner, the user can dynamically add, modify and delete the three-dimensional model via an interface interaction mode according to own needs, so that the timely and quick building of thethree-dimensional model is achieved, the operation is convenient and quick, the three-dimensional modeling efficiency is enhanced, and the large-scale virtual scene building requirement is met.
Owner:ZHENGZHOU YUNHAI INFORMATION TECH CO LTD

Flat specimen high-temperature tension-compression fatigue test clamp and method

The invention discloses a flat specimen high-temperature tension-compression fatigue test clamp and method. The clamp and method implement clamping on the flat specimen in a high-temperature test, so that the flat specimen can be subjected to the tension-compression test under high-temperature conditions. A fatigue machine hydraulic clamping head clamps an optical rod end of a central shaft and is connected with a connecting rod through a sleeve, and the central shaft is provided with a fixing nut which is used for restricting the downward displacement of the sleeve; the connecting rod is fixed with the sleeve through a screw; the connecting rod is connected with a wedge clamp body through threads; the central shaft penetrates through a through hole in the middle of the connecting rod, and the shaft end is connected with a guide table; the guide table is positioned in a groove between two wedge clamping bodies, and used for guiding the wedge clamping blocks to move up and down; the specimen is clamped by the wedge clamping blocks in the wedge clamp body, the bottoms of the wedge clamping blocks are abutted by the top end of the guide table, and both ends contact the wedge surface inside the wedge clamp body so as to restrict the upward displacement of the clamping blocks; and the top ends of locking threads extending from threaded holes on both sides of the wedge clamp body contact the square clamping blocks, so that the square clamping blocks abut against both sides of the clamp blocks, thereby restricting the downward displacement of the wedge clamping blocks.
Owner:BEIHANG UNIV

Gravity deformation compensation device for optical element

The invention discloses a gravity deformation compensation device for an optical element. The gravity deformation compensation device comprises the optical element, a deformable picture frame, a pair of annular electromagnets, a capacitor sensor and an upper cover board, wherein the deformable picture frame is in an integral structure formed by an inner ring of the picture frame, an outer ring of the picture frame and a support circular ring; the inner ring of the picture frame is fixedly connected with the optical element through an injection hole in the side wall; the lower part of the support circular ring contacts an outer picture frame boss to provide a support point; one annular electromagnet is arranged at the upper part of the outer ring of the picture frame; a vertical downward displacement is provided through repulsion between the electromagnets; and the outer frame of the deformable picture frame drives the inner frame to carry out an axial movement after being loaded, so that the optical element deforms; compensation of a rotational symmetry aberration is finally achieved; and the gravity deformation compensation device for the optical element has the advantages of being simple in structure, reasonable in design and the like.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

High effcient and multifunctional backbone treatment couch

The invention relates to a high efficient and multifunctional backbone treatment couch, comprising a couch body; the couch is characterized in that the couch surface of the couch body is a couch plate for patients to lie down in two directions; one end of the couch plate is provided with two slots corresponding to cervical vertebra and lumbar of a patient respectively; the two slots are respectively provided with a corrective, the lower end of the correctives are fixedly connected with a lifting mechanism which enables the correctives to carry out upward and downward displacement; the other end of the couch plate is provided with a fumigating hole respectively corresponding to cervical vertebra and lumbar of the patient; a fumigating barrel containing fumigating liquid medicine which can be respectively connected and used with the fumigating holes in a movable way is also provided; a leg fixing band is arranged at the fumigating hole end of the couch plate. The treatment couch of the invention has the beneficial effects that the treatment effects are improved, the intervertebral discs are restored; moreover, the couch bed is designed in a scientific and safe way; in particular, music remedy is added to backbone correcting treatment, thus serving to improve mentality of the patient; furthermore, the device can be directly applied to families where the patient can be treated by following the advice of the doctor, thus saving time and trouble, offering a convenient and cozy environment and accelerating recovery.
Owner:蔡进生

Apparatus and method for testing in-situ triaxial tension fatigue under multi-field coupling

The invention relates to an apparatus and method for testing in-situ triaxial tension fatigue under multi-field coupling, belonging to the field of precise scientific instruments. The apparatus comprises a triaxial tension, fatigue loading and measuring subsystem, a thermal-field loading subsystem and a cantilever indentation loading and measuring subsystem. Loading of triaxial tension is realized as a motor, after decelerated by a two-grade worm and gear, drives a screw-screw nut pair mechanism to drive an tension platform; fatigue testing is realized via a flexible hinge driven by three piezoelectric ceramics; a thermal field is loaded as a heating system composed of a silicon nitride heating plate and a heating bench carries out heat-radiation heating on a test piece; cantilever indentation is applied as the piezoelectric ceramics drive the flexible hinge to allow a cantilever beam to generate downward displacement; and a main platform is provided with a location hole, a microscope can be integrated on the main platform through an installation platform, so in-situ observation of the test piece in loading is realized. The apparatus is reliable in principle and compact in structure and can accurately characterize micro-nano mechanical properties of a material under multi-field coupling like triaxial tension.
Owner:JILIN UNIV
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