990 results about "Liquid column" patented technology

Method of purifying a feed stream containing carbon dioxide wherein the feed stream after having been compressed and dried is partly cooled and then used to reboil a stripping column. Thereafter, the feed stream is further cooled and expanded to a lower operational temperature of the stripping column. A carbon dioxide product stream composed of the liquid column bottoms of the stripping column is expanded at one or more pressures to generate refrigeration, then fully vaporized within the main heat exchanger and compressed by a compressor to produce a compressed carbon dioxide product. Refrigeration is recovered in the main heat exchanger from a column overhead stream extracted from the stripping column within the main heat exchanger either directly or indirectly by auxiliary processing in which carbon dioxide is further separated and optionally recycled back to the main compressor used in compressing the feed stream.

Thermoplastic container (1) having a body (2) and a base (3) comprising: a concave arch (4), a concave dome (6) opening at the centre of said arch (4), an annular zone (5) surrounding the base of said arch and forming a flat foundation, claw-shaped zones (11) radially extending the base of the body (2) and offset projecting outwards relative to the arch, and radial grooves (12) delimited between the zones (11) in the shape of claws, said grooves having bottoms (13) which are formed by radial sections (4a) of the arch and which have a radially variable depth which is maximum in correspondence with said annular zone forming a foundation. Such a base is adapted for withstanding, without marked deformation, the hydrostatic pressure due to the liquid column increased by an excess pressure not exceeding approximately 2×10⁵ Pa.

The invention discloses a method and device for testing rock drillability of deep well drilling and extra-deep well drilling. The device comprises a machine frame (1), a high temperature and high pressure loading mechanism and a micro drill bit rock breaking drilling depth measurement mechanism, wherein the high temperature and high pressure loading mechanism and the micro drill bit rock breaking drilling depth measurement mechanism are arranged on the machine frame (1). The device exerts confining pressure, pore pressure and fluid column pressure on rock samples in cavities in three axes, overburden pressure is exerted on the rock samples through a hydraulic pump, and therefore the high pressure environment of the stratum of the bottom of a well can be simulated, the relation between the drilling depth and the time is tested through a displacement sensor at the position of a micro drill bit, optimization of the drilling pressure, the rotating speed and the drilling fluid type and drilling machinery drilling speed prediction are achieved. The method and the device have the advantages that the requirements for the bottom hole temperature and the pressure can be met in the deep well drilling process and the ultra-deep well drilling process, the function of testing multiple sets of rock drillability values through a single time of experimental testing of deep well drilling is achieved, the efficiency of the single time of experimental testing is greatly improved, and experimental cost is reduced.

Laser beam L oscillated by a laser oscillator 4 is guided by an optical fiber 12 constituting laser-guiding means 7 to a processing head 6, a liquid passageway 25 to which a high-pressure liquid is supplied by a high-pressure pump 5 is formed in the processing head, and this high-pressure liquid is jetted in the form of a liquid column W from a jet hole 24 of a jet nozzle 23 provided at a lower end of the processing head 6.

The optical fiber is exposed inside of the liquid passageway, and a tip of a fiber core 12a of the optical fiber projects beyond a fiber clad 12b, and is close to the vicinity of the jet hole.

The laser beam irradiated from the fiber core is guided to the liquid column after it is reflected on a first inclined surface 24a formed on the jet hole, and processing on the workpiece 2 is performed.

The laser beam can easily be guided to the liquid column.

A thrombectomy removal system includes a catheter having a distal end and defining a lumen filled with a liquid column having a proximal portion and a distal portion, a vacuum source, a vent liquid source, and a vacuum and vent control system configured to cyclically connect or disconnect the vacuum source and the vent liquid source to change a level of vacuum at the distal end and substantially prevent forward flow. The vacuum source and the vent source are respectively fluidically connected to the vacuum and vent valves. A manifold connects the proximal portion to the vacuum and vent sources through the valves. Control of the valves prevents forward flow of the distal portion out from the distal end during each cycle. Each cycle can have states including vacuum-only, first double-closed, vent-only, and second double-closed. A time of the double-closed states can be no greater than 30 ms.

The present invention relates to oil well output liquid measuring power graph method and device. Oil well liquid output is measured through analysis of the 3D vibration of oil pumping rod column, oil pipe column and liquid column and the time relationship of their displacement, speed, strain, stress and load, research of the mutual coupling of the force and displacement of these three sys, acquiring oil well relating data with load and displacement sensors, and computer treatment to calculate the effective stroke of the oil pump. Meanwhile, the present invention also performs the diagnosis and analysis of oil well work state and the remote monitoring of oil well.

The invention provides a non-contact measurement method for measuring a liquid parameter, which comprises the following steps: 1) horizontally putting one end of a transparent capillary into the measured liquid; 2) recording image data of a layered flowing process of the measured liquid in the capillary; 3) vertically placing the capillary; 4) shooting an image of a liquid column with high stability; 5) calibrating a corresponding relationship between the number of pixels in an image device and the length of a shot object, processing the image of the image data to acquire the radius alpha of the capillary, the change process of liquid interface displacement S (t) along with the change of time t, the height H of the liquid column formed in the capillary and the curvature radius R of the liquid interface; and 6) calculating the fluid dynamic parameter of the measured liquid according to the data acquired by processing the image in the step 5). The method does not depend on large equipment, is simple and feasible, has low cost and uses a small amount of samples. The method can easily realize the measurement of a capillary array, and also can measure different liquid parameters.

A liquid column-based normal/shear pressure/force sensing device having an elastic electrolyte-electrode contact with large interfacial capacitance to achieve high sensitivity and resolution with flexible and transparent constructs.

The invention relates to an icebound type pressure-maintaining and temperature-preserving sampler. The icebound type pressure-maintaining and temperature-preserving sampler comprises a drilling in/sampling switching mechanism, a refrigerating fluid circulating system, a slurry ice valve and core valve in-situ generation mechanism, a core accommodating pipe single acting mechanism and channels I, II, III, IV, V and VI; the slurry ice valve and the core valve which are generated by freezing are used to replace mechanical valves of a ball valve or a plate valve and the like to close an upper port and an lower port of a sampling drilling tool, solid impurities in a hole have no influence on the closing process, thereby the sampler has high reliability and solves the problems of difficult starting, difficult closing caused by easy blockage of sundries in the hole and the like of the tradition mechanical valves and improves pressure-maintaining reliability and success ratio; and moreover, radial dimension can be smaller so as to be beneficial to acquiring cores with larger diameters and improving hydrate coring recovery factor. Tests prove that the ice valve can realize the sealing of 25MPa, which is suitable for drilling on hydrate with an inner hole liquid column reaching 2500m; and a hydro hammer drives a reciprocating pump, which utilizes the slurry as dynamic medium, thereby avoiding the complexity brought by an electric structure and having simplicity and reliability.

The invention relates to a continuous casting method of large-length hollow ductile cast iron sections and a method for arcing the hollow ductile cast iron sections after local continuous heating. Thesection comprises the following components by weight percent: 3.4-3.6% of C, 2.8-3.2% of Si, 0.40-0.60% of Mn, S less than or equal to 0.1%, P less than or equal to 0.1% and the balance Fe. Molten iron is subjected to shaping and continuous casting under multiple physical fields to become the hollow sections. The molten iron in heat preserving furnaces is separated from dross, sand and gas in twoways, thus completely solving the defects of dross inclusion, sand inclusion and pores; liquid column cores in a crystallizer carry out continual feeding on condensing tube shells, thus eliminating the possibility of shrinkage porosity inside the tube walls, obtaining highly dense cast structure of (ferritic matrix+spherical graphite) and eliminating crack initiation origins in thermoplastic deformation to be carried out later. The intense cooling speed in the crystallizer enables the volumes of eutectic cells to be only 1/15-1/25 of the volumes of traditional sand mould casts. The density ofthe graphite balls reaches around 500/mm<2>. In plastic deformation, the micro slip orientation is increased and the ductility is enhanced, therefore, the hollow cast iron sections can be arced by medium frequency induction heating and bending.

The invention discloses a waste crude oil pipe harmless cleaning process. A pipe cleaning train consisting of four sets of pipe cleaners, and special detergent liquid columns, compressed nitrogen gas columns and clean water liquid columns formed among the four sets of pipe cleaners slowly moves in a pipe to fully dip and thoroughly clean residues attached on the inner wall of the pipe. The process adopts a physical and chemical combined cleaning method to clean a waste crude oil pipe, can remotely monitor and intelligently adjust the traveling speeds of the pipe cleaners, accurately determines the dissolving time of detergent in the pipe to the residues, and guarantees the pipe cleaning effect; and the residues and the cleaning waste liquid in the pipe are respectively collected in a manner of not falling to the ground, so that the pollution is prevented from the source. The special detergent can guarantee efficient, quick and thorough dissolving of the firm residues in the waste crude oil pipe, is matched with clean water for cleaning to enable the waste pipe to achieve the effects of no wax, no oil stains and no scales in the pipe after cleaning, and can show natural color of metal.

The invention discloses a liquid column separation-bridged water hammer simulation method based on three-dimensional CFD (Computational Fluid Dynamics). The liquid column separation-bridged water hammer simulation method comprises the following steps: by carrying out three-dimensional modeling and mesh generation, firstly, carrying out single-phase compressible stable-state calculation of a water body to obtain a stable-state fluid field; then carrying out liquid column separation gas-liquid two-phase transient flowing calculation; and finally, processing a computed result by using post-processing software. According to the liquid column separation-bridged water hammer simulation method, on the basis of simultaneously considering the compressibility of the water body and steam, the mass transfer between gas and liquid is considered, and liquid column separation types do not need to be distinguished, so that a mathematical model and a solving method thereof are simplified to a certain extent and the simulation accuracy is relatively high; and unreal pressure pulse similar with one-dimensional simulation is not formed, and visualization of primary formation, development and collapsing processes of a hollow hole in a liquid column separation process is realized.

A liquid droplet ejecting method for ejecting a liquid from at least one ejection hole to form the liquid into liquid droplets, the method including: applying a vibration to the liquid in a liquid column resonance-generating liquid chamber, in which the ejection hole is formed, to form a standing wave through liquid column resonance, and ejecting the liquid from the ejection hole, which is formed in a region corresponding to an antinode of the standing wave, to form the liquid into liquid droplets.

A device for device for applying a plurality of microdroplets onto a substrate has a plurality of nozzle orifices in a dosing head. In addition to walls for defining a liquid column of a medium to be dosed on each nozzle orifice, a pressure chamber is provided, which is adapted to be filled with a buffer medium and which is arranged in such a way that said buffer medium can simultaneously be used for applying a pressure to the liquid-column ends which are spaced apart from the nozzle orifices. A pressure generator is provided for applying a pressure to said buffer medium in such a way that a plurality of microdroplets will simultaneously be applied onto the substrate through said plurality of nozzle orifices. Finally, liquid reservoirs for the media to be dosed, which are in fluid communication with the liquid columns on the nozzle orifices are provided.

The invention relates to a novel TLD which combines liquid damping and liquid column damping. The novel TLD comprises a water tank, a baffle, a baffle fixing and adjusting device, elastic supports and a hinge device. The novel TLD combines the advantages of a TLD and a TLCD (Tuned Liquid Column Damper), is simple manufacturing and multi-purpose and can improve damping and shock-absorbing effects. According to the novel TLD, the rectangular deep water tank is utilized as a basic model, the middle of the bottom of the water tank is hinged and fixed, and two ends of the bottom of the water tank are provided with the elastic supports. The center of the water tank is provided with the vertically-arranged flat plate, and the length of the flat plate in the liquid inside the tank is adjustable. When wind loads or earthquake loads are in action, liquid in the water tank can generate vibration in a horizontal direction and can also generate liquid level change in the vertical direction, and accordingly the vibration energy loss of the liquid can be increased. The flow condition of the liquid can also be changed by adjusting the height of the flat plate so as to adjust the damping ratio of the liquid damper.

The particulate material production method includes vibrating a particulate material composition liquid in a liquid column resonance chamber having at least one nozzle to form a standing wave in the particulate material composition liquid caused by liquid column resonance, so that droplets of the particulate material composition liquid are ejected in a droplet ejection direction from the nozzle so as to fly in a space in a flight direction; feeding a gas in a direction substantially perpendicular to the droplet ejection direction to change the flight direction of the ejected droplets; and solidifying the droplets in the space to produce a particulate material. The particulate material composition liquid includes at least a solvent and a component of the particulate material dissolved or dispersed in the solvent, and the nozzle is located at a location corresponding to an anitnode of the standing wave.

The invention relates to continuous circulation system that is constituted by multifunction injection system, in well circulation system and ground returning system. The injection system includes drilling fluid that has three densities, two or three mud pumps, and high pressure gas injection device. By the method of injecting two drilling fluids that have different density and fast mixing, or injecting high pressure gas, the in-well liquid column pressure would be adjusted fast and flexibly. The in-well circulation system includes double tube well structure and in-well drilling column, and supplies three flowing channels as the returning channel or injecting channel. The ground returning system includes well head control combination, casing head and gas-liquid-solid separating device. The continuous circulation system is constituted by eight purposes and improves the safety of the well.