776 results about "Pressure injection" patented technology

A fuel injection system has a pressure step-up unit, disposed between a pressure storage chamber and a nozzle chamber, whose pressure chamber communicates with the nozzle chamber via a pressure line. A bypass line connected to the pressure storage chamber is also provided. The bypass line communicates directly with the pressure line. The bypass line can be used for pressure injection and is disposed parallel to the pressure chamber, so that the bypass line is open regardless of the motion and position of a displaceable piston element in the pressure step-up unit. This enhances the flexibility of injection.

A mobile platform interior panel is provided that includes a body formed by a low pressure injection process and at least one of a duct and a layer of insulation integrated with the body. The low pressure injection process allows the duct and insulation to be integrated with the body simultaneously with the forming of the panel. More specifically, the duct is integrated with the panel by forming at least one internal cavity within the panel as the panel is formed. Additionally, the insulation is integrated with the panel by forming the panel using a low pressure injection material having desired insulative properties.

The invention provides an in-situ restoration device and an in-situ restoration method of organic polluted soil and underground water. The in-situ restoration device designed by the invention comprises a pneumatic source system, an agent dissolving and preparing system, an in-situ injection system and an injection well system. The in-situ restoration device is characterized in that the organic polluted soil and the underground water in a saturation layer and a non-saturation layer can be restored, injection wells are distributed at polluted areas according to the conditions of pollution distribution and hydrogeololgy and the like, and oxidizing agents prepared by the dissolving and preparing system are injected into the polluted areas by certain pressure through the injection system to restore target pollutants. The in-situ restoration device provided by the invention has the advantages that the injection wells are subjected to three-layer sealing by three sealing materials, the integration is good, the disassembly is fast and the economic and fast effects are achieved.

The present invention relates to heterogeneous foamed ceramic/metal material, and is especially one kind of high strength and high toughness foamed SiC/Al material and its preparation process. The foamed SiC/Al material has basic units of closed polygonal ring to form connected 3D network structure, and each of the closed polygonal ring units is heterogeneous foamed ribs comprising SiC in 50-95 vol% and metal Al in 5-50 vol% and with the relative density not lower than 99 %. The foamed SiC/Al material is prepared through organic foam soaking, hot pressing to densify, pressure injection filling, thermal decomposition and reaction sintering. The preparation process is simple and low in cost.

The invention relates to a diagenesis simulation experimental apparatus and method. The diagenesis simulation experimental apparatus comprises a rock core clamping mechanism, a heating mechanism, a gas porosity and permeability measurement process, a liquid injection and liquid permeability test process, an automatic continuous outlet-fluid metering and sampling mechanism, a burden pressure boost control mechanism, a fluid physical property detection mechanism and a data acquisition-calculation and automatic control mechanism, wherein, the inlet and outlet of the rock core clamping mechanism are respectively connected with the gas porosity and permeability measurement process and the liquid injection and liquid permeability test process; the heating mechanism is sheathed at the periphery of the rock core clamping mechanism, and the burden pressure injection port of the rock core clamping mechanism is connected with the burden pressure boost control mechanism; the outlet of the liquid injection and liquid permeability test process is connected on the automatic continuous outlet-fluid metering and sampling mechanism; the fluid physical property detection mechanism detects a fluid sample of the automatic continuous outlet-fluid metering and sampling mechanism; and the data acquisition-calculation and automatic control mechanism acquires, records, stores and calculates temperature, pressure and flow rate in an experiment and meanwhile controls operation of the corresponding solenoid valve and the automatic continuous outlet-fluid metering and sampling mechanism according to the experimental status.

A mirror with wide viewing angle and reduced image distortion, to be used as an external rear-view mirror for vehicles which is obtained monolithically by pressure injection-molding or gravity casting of a highly transparent material and its external incident surface is flat, while the reflective rear part is obtained by means of an aspheric surface which is generated by the rotation, about an axis which is ideally parallel to the centerline axis of the vehicle, of a curve which determines, with good approximation, a profile which avoids significant deformation of the reflected images.

A capillary electrophoresis device and separation protocol uses a hydraulic resistance-providing structure (HRPS) in the main separation channel to separate the divide the main separate channel into an upstream portion and a downstream portion. The HRPS may take the form of a porous plug, or a solid plug provided with at least one shallow channel. A sample separates and migrates through the porous structure or the shallow channel, upon application of a voltage difference between the upstream and downstream sides. Among other things, the HRPS helps reduce electrokinetic flow in the presence of conductivity gradients and facilitates robust, high-gradient on-chip field amplified sample stacking. The HRPS also enables the use of a pressure-injection scheme for the introduction of a high conductivity gradient in a separation channel and thereby avoids flow instabilities associated with high conductivity gradient electrokinetics. The approach also allows for the suppression of electroosmotic flow (EOF) and benefits from the associated minimization of sample dispersion caused by non-uniform EOF mobilities. An injection procedure employing a single pressure-flow high-conductivity buffer injection step followed by standard high voltage control of electrophoretic fluxes of sample, may be employed.

A thermosetting powder coating composition extruder system including an extruder body and an injection system is disclosed. The extruder body includes segments surrounding one or more rotating screws. A first segment's main inlet receives material, such as from a pre-mix hopper, and a final segment's outlet discharges extrudate. A low pressure injector injects additives, particularly those that are hard to incorporate, into one or more segments at one or more injection positions at the main inlet or between the main inlet and the outlet. The injector includes a source of pressurization coupled to a pressure vessel, a pressure regulator maintaining the pressure at or below a given level, a flow regulator, and an injection port. A sensor adjacent the outlet monitors the physical characteristics of the extrudate and is coupled to a controller of the low pressure injector for dynamic control thereof.

The invention provides a core permeability experimental testing method and a device under a condition of stratum pressure. The method comprises the steps of: installing a core sample in a core holder and applying confining pressure to the core holder through a high-pressure injection pump; adjusting a back pressure controller and setting pressure to an initial back pressure value; filling air into pores of the core sample, and after the pressure of the pores of the core sample is balanced, stopping filling air and cutting off an air source; and testing the permeability of the core sample and recording the permeability testing result. The experiment not only simulates pressure which is applied by an overlying rock stratum to the core sample in a stratum, but also simulates original stratum pressure applied by fluid in bypass pores to the core sample in the stratum. Therefore, the actual physical condition of the core sample in the stratum is fully simulated, and the permeability of the core sample which is tested based on the experimental testing method and the device is enabled to be more scientific and more accurate.

NOx and soot emissions from internal combustion engines, and in particular compression ignition (diesel) engines, are reduced by varying fuel injection timing, fuel injection pressure, and injected fuel volume between low and greater engine loads. At low loads, fuel is injected during one or more low-pressure injections occurring at low injection pressures between the start of the intake stroke and approximately 40 degrees before top dead center during the compression stroke. At higher loads, similar injections are used early in each combustion cycle, in addition to later injections which preferably occur between about 90 degrees before top dead center during the compression stroke, and about 90 degrees after top dead center during the expansion stroke (and which most preferably begin at or closely adjacent the end of the compression stroke). These later injections have higher injection pressure, and also lower injected fuel volume, than the earlier injections.

The invention discloses an optical fiber F-P pressure sensor and a pressure liquid level sensing device thereof, relating to a type of pressure sensor. The structure of the sensor is that: a pressure film box/plate provided with pressure injection holes is arranged at the center and connected with the periphery of the opening of a supporting member in a sealing way; the center of the bottom of the supporting member is provided with optical fixing holes and pressure balancing holes, and the optical fixing holes are connected with conductive optical fiber; and an extrinsic F-P cavity is arranged between the end face of the conductive optical fiber and the central plane of the pressure film box/plate. The sensor features simple structure, small volume, convenient mounting, high pressure resolution and is very suitable for measuring requirement of small range and high precision; sensitive elements can be replaced conveniently to adapt to the different measuring requirements; the cost is lower and no special demands for light source wavelength exists; the invention is applicable to computation of storage quantity of small chemical liquid and oil stock tank, chemical/oil stock and transportation tank vehicle and other various types of liquid/gas stock and transportation equipment.

A new gas collimator for use in a kinetic spray system is disclosed. The collimator reduces turbulence of the main gas and results in significant increases in the amount of particles deposited on a substrate using the system. Kinetic spray nozzles incorporating the new collimator also have significantly higher deposition efficiencies. The new collimator enables the main gas temperature to be reduced while permitting much higher depositions and deposition efficiencies compared to the prior art collimator. Also disclosed is a low pressure injection method for a kinetic spray system. The coaxial, low pressure injection method enables the use of low pressure powder feeders, which are low cost, technologically mature, and widely available commercially. The coaxial injection method overcomes several undesirable effects associated with prior art high pressure injection methods.

The present invention relates to heterogeneous foamed ceramic/metal material, and is especially a kind of high strength, high density and high heat conductivity heterogeneous foamed SiC/Cu material and its preparation process. The foamed SiC/Cu material has basic units of closed polygonal ring to form connected 3D network structure, and each of the closed polygonal ring units is heterogeneous foamed ribs comprising SiC in 50-95 vol% and metal Cu in 5-50 vol% and with the relative density not lower than 99 %. The foamed SiC/Cu material is prepared through organic foam soaking, hot pressing to densify, pressure injection filling, thermal decomposition and reaction sintering. The preparation process is simple and low in cost.

The invention relates to the technical field of marine gas hydrate resource development engineering, in particular to an indoor experimental device and method for evaluating the mutual coupling relationship between the shakeout process and mechanical parameters of hydrate-containing loose sediments. The device comprises a high-pressure reaction kettle, a thermostatic control system, a triaxial pressurizing system, a confining pressure control system, a pore pressure injection system and a shakeout parameter test system, wherein the confining pressure control system, the pore pressure injection system and the triaxial pressurizing system are connected with the high-pressure reaction kettle; and the shakeout parameter test system is connected with the outlet end of the high-pressure reaction kettle. Through measurement of the mutual coupling relationship between shakeout parameters, such as the shakeout amount, the shakeout grain size and the shakeout speed of the hydrate sediments, under the actual temperature, pressure and stress conditions, and triaxial mechanical parameters, such as the stress-strain curve, the shear strength, the Yong modulus and the cohesion, a support is provided for forecasting the related relationship between the shakeout parameters and the mechanical parameters of a hydrate-containing reservoir, and a new concept is provided for probing into the shakeout mechanism of the natural gas hydrate reservoir.

A method of pumping and related arrangement for multi-phase fluid flow wherein a centrifugal pump is used for the suction and delivery of the multi-phase fluid which has a fluid communication providing portion to provide a communication of fluid bled from the outlet at a higher pressure to be injected into the inlet conduit of the centrifugal pump in operation. The centrifugal pump is provided with an impeller which has a plurality of vanes configured to define there between larger passageways when compared to a conventional centrifugal pump which would operate in or near optimum conditions when pumping liquid only.

The invention discloses a drilling power tool, a drilling tool and a drilling method for forming boreholes. The drilling power tool comprises an energy conversion mechanism and a valve shaft system. The energy conversion mechanism is a rotary generator. The valve shaft system comprises a stator, a rotor, a movable valve sheet assembly, a fixed valve sheet assembly and a shaft assembly, wherein the rotor makes a reciprocating motion right and left and drives the movable valve sheet assembly directly connected with the rotor. The energy conversion mechanism is a screw rod or a turbine or an impeller. According to the invention, when a drilling bit is rotated, the drilling pressure at the drilling bit and the drilling pressure at the bottom of a drilling well are similar to the continuous gentle change of the sine law, which is favorable for the strength reduction of surrounding rocks and the development of fractures, so that the rock breaking efficiency can be improved obviously. In addition, because the pressure at the drilling bit and at the bottom of the drilling well is changed periodically, the negative-pressure injection and the high-pressure injection are generated alternately; and when the pressure becomes lower, the well drilling in an underbalance manner or by using the gas drilling fluid is carried out, so that the surrounding rock environment is changed, and the mechanical drilling rate is improved obviously.

The invention relates to a low-pressure injection molding encapsulation method of a polymer battery and a low-pressure injection molding polymer battery. The battery of the invention comprises a battery protecting board, a battery cell and an adhesive wherein the battery protecting board is welded with the positive pole and the negative pole of the battery cell; the adhesive frame is composed of a front side, a back side, a left side and a right side; the height of the adhesive frame is equivalent to the thickness of the battery cell; the battery protecting board is clamped on one side, which is provided with an electrode hole, of the adhesive frame; a plurality of convex ribs are arranged on the inner sides of the other three sides of the adhesive frame; the convex ribs abut against the corresponding side of the battery cell, so a gap is formed between the battery cell and the adhesive frame; and hot melt adhesive molded by low-pressure injection molding is filled in the residual space in the adhesive frame. The invention has the advantages of simple structure, low manufacturing cost, good mechanical property, low height of the battery, precise dimension and high realizability.

The invention discloses a true triaxial fracture seepage continuous test system and method, and belongs to the technical field of rock mass mechanics and engineering. The true triaxial fracture seepage continuous test system comprises a fracture seepage continuous test system, a true triaxial loading system, a confining pressure injection system, an acoustic emission monitoring system, a servo control system and a data acquisition and control system. Fracture seepage continuous testing is achieved by control over a pneumatic steering valve, the actual stress, temperature and seepage conditionof rock in stratum is simulated under effects of a temperature field, a seepage field and a stress field, fracture seepage continuous test is performed on a test piece so as to test a fracture effectof the rock, the crack initiation, expansion and opening and closing characteristic of a gap generated by a crack is completely monitored by the acoustic emission monitoring system, the gap formationand expansion mechanism is observed, analyzed and mastered, and theoretical foundation and experiment basis are provided for hydraulic fracturing of coal bed gas and shale gas.