31results about How to "Increase driving pressure" patented technology

This relates to an improved delivery system for accurately loading and controlling the delivery of flowable material to a patient. Particularly, the system may be used in the injection of hard tissue implant materials such as PMMA under pressures up to about 4000 psi. The system includes an applicator with a first column having an implant material introduction section adapted to provide for effective loading of the implant material and a second column housing a piston. The introduction section has a larger size than that of a vessel section or bore in which the requisite pressure seal between the piston and bore wall is formed. The first column may include an introduction section flared open to an included larger funnel-like opening or a separate funnel may be used that interfaces with the introduction section to facilitate the introduction of implant material. Handles on the first and second columns to be turned relative to each other to advance the columns toward each other may be provided for manual actuation of the applicator to drive implant material through a cannula and deliver implant material to a desired site.

The invention relates to the discovery of novel soluble neutral active Hyaluronidase Glycoproteins (sHASEGPs), methods of manufacture, and their use to facilitate administration of other molecules or to alleviate glycosaminoglycan associated pathologies. Minimally active polypeptide domains of the soluble, neutral active sHASEGP domains are described that include asparagine-linked sugar moieties required for a functional neutral active hyaluronidase domain. Included are modified amino-terminal leader peptides that enhance secretion of sHASEGP. The invention further comprises sialated and pegylated form of a recombinant sHASEGP to enhance stability and serum pharmacokinetics over naturally occurring slaughterhouse enzymes. Further described are suitable formulations of a substantially purified recombinant sHASEGP glycoprotein derived from a eukaryotic cell that generate the proper glycosylation required for its optimal activity.

A turbine blade for a turbine engine having a cooling system in the turbine blade formed from at least one elongated tip cooling chamber forming a portion of the cooling system and at least partially defined by the tip wall proximate to the first end. An inner surface of the tip wall may include a plurality of curved bumper protrusions extending from the inner surface radially inward toward the root. The cooling system may include a plurality of ribs generally aligned with the trailing edge, and the curved bumper protrusions may be offset in a chordwise direction relative to the ribs. A throat section may extend between a first forwardmost curved bumper protrusion and a second immediately adjacent downstream curved bumper protrusion and may be offset radially outward from an inner tip surface, thereby creating a first recessed tip slot with a reduced tip wall thickness.

The invention relates to the discovery of novel soluble neutral active Hyaluronidase Glycoproteins (sHASEGPs), methods of manufacture, and their use to facilitate administration of other molecules or to alleviate glycosaminoglycan associated pathologies. Minimally active polypeptide domains of the soluble, neutral active sHASEGP domains are described that include asparagine-linked sugar moieties required for a functional neutral active hyaluronidase domain. Included are modified amino-terminal leader peptides that enhance secretion of sHASEGP. The invention further comprises sialated and pegylated forms of a recombinant sHASEGP to enhance stability and serum pharmacokinetics over naturally occurring slaughterhouse enzymes. Further described are suitable formulations of a substantially purified recombinant sHASEGP glycoprotein derived from a eukaryotic cell that generate the proper glycosylation required for its optimal activity.

A piezoelectric microvalve employs a valve element formed of hermetically sealed and opposed plates flexed together by a cross axis piezoelectric element. Large flow modulation with small piezoelectric actuator displacement is obtained by perimeter augmentation of the valve seat which dramatically increases the change in valve flow area for small deflections.

The invention relates to an oil matching mechanism for a hydraulic motor, which aims at providing a plunger type quantitative hydraulic motor liquid switch torque-converting and oil-matching component. The oil-matching component comprises plungers, an oil-matching valve group and a liquid torque-converting driving mechanism, wherein, the oil matching valve group is composed of integrated valves ofidentical number of the plungers; each integrated valve is composed of a high-speed switch high pressure oil supplying valve and a corresponding high-speed switch oil discharging / complementing valve;each high speed switch oil discharging / complementing valve is provided with an oil return hole, and each high speed switch high pressure oil supplying valve is provided with a pressure oil hole; thetail part of a push and pull rod penetrates out of a spring cavity of the high speed switch high pressure oil supplying valve and is connected with the liquid torque-converting driving mechanism; theliquid torque-converting driving mechanism is used for driving the integrated valves to work. The hydraulic motor has the advantages that the torque-converting control of the switch can be realized; alarge quantity of energy consumption can be saved; the driving pressure of the hydraulic motor is greatly improved.

The invention discloses an ecological dredging jet pump, which comprises a jet water inlet pipe, a high-pressure distribution cavity and a silt outlet pipe which are connected in turn. Jet water is jetted into the outlet pipe through a primary jet spout and a secondary jet spout in the high-pressure distribution cavity, wherein the primary jet spout directly jets the jet water into the outlet pipe; and the secondary jet spout introduces the jet water into the outlet pipe through a streamline inlet. The ecological dredging jet pump utilizes the hydrodynamics Coanda effect to realize high speedflow, can avoid secondary pollution caused by using rotating components, and can be widely applied to ecological dredging and environment-friendly dredging of river courses, lakes and the like, and absorption of coal dust on the mine bottom of a coal mine.

The invention relates to a hydraulic motor, which aims at providing a liquid switch torque-converting and oil-matching rotating cylinder type quantitative plunger hydraulic motor. The motor comprises a motor casing body, plungers, a driving disc, an oil matching valve group and a liquid torque-converting driving mechanism, wherein, the oil matching valve group is composed of integrated valves of identical number of the plungers; each integrated valve is composed of a high-speed switch high pressure oil supplying valve and a corresponding high-speed switch oil discharging / complementing valve; each high speed switch oil discharging / complementing valve is provided with an oil return hole, and each high speed switch high pressure oil supplying valve is provided with a pressure oil hole; the plunger heads of the plungers are connected with the driving disc, and the driving disc is connected with the extending axle of the motor; the tail part of a push and pull rod penetrates out of a spring cavity of the high speed switch high pressure oil supplying valve and is connected with the liquid torque-converting driving mechanism; the push and pull rod head is positioned between end surfaces of two valve cores; the liquid torque-converting driving mechanism is used for driving the integrated valves to work. The hydraulic motor has the advantages that the torque-converting control of the switch can be realized; a large quantity of energy consumption can be saved; the driving pressure of the hydraulic motor is greatly improved.

The invention relates to a fluid power motor with polyphase and polystep plunger. It makeup with shell,sloping cam plate,oil distributing unit with switching change-torque value,electromechanical convertor,turn angle detection sensor and electronic controller. Switching change-torque value makeup with plunger piston and nil distributing value group which contains front end plate,valve plate, lower end plate,high speed-optical switching heavy pressure oil valve and high speed-optical switching oil vent / slippage valve. Entry end of high speed-optical switching heavy pressure oil valve connects to pressure oil port and export end connects to cavity of plunger piston. Spring end of high speed-optical switching oil vent / slippage valve connects to cavity of plunger piston. The motor take real-time adjusting on duty cycle and control the switching change-torque. The invention save large quantity of energy and improve driving pressure of fluid power motor by without relative slip between oil distributing unit and end surfave of cylinder body.

The invention relates to a hydraulic motor and aims at providing an electro-hydraulic switch variable torque oil distribution type rotary cylinder type quantitative plunger hydraulic motor. The motor includes a motor housing, a swash plate, a switch variable torque valve-controlled oil distribution assembly, an electro-mechanical converter, a drive amplifier, a brush, an induction ring and an electronic controller; the switch variable torque valve-controlled oil distribution assembly includes an oil distribution valve The oil distribution valve group includes a high-speed switch high-pressure oil supply valve and a high-speed switch oil discharge / fill valve; each valve is connected to an electro-mechanical converter, and each electro-mechanical converter is connected to a drive amplifier; the high-speed switch high-voltage supply valve The inlet port of the oil valve is connected to the pressure oil port, and the outlet port is connected to the plunger chamber of the plunger; one end of the spring chamber of the high-speed switch oil discharge / fill valve is connected to the plunger chamber of the plunger, and the other end is connected to the oil return port . The invention realizes switch variable torque control and saves a lot of energy consumption; the valve-controlled oil distribution component is directly installed on the end face of the hydraulic motor plunger cylinder body, which greatly improves the driving pressure of the hydraulic motor.

A tip clearance control (TCC) system 100 is provided to control the gap 176 between the tips of turbine blades 172 of a gas turbine engine 10 and the casing 174 within which they rotate. The inlet 120 to the TCC system is provided in a bifurcation panel 110 that extends across a bypass duct 22 of the gas turbine engine 10. The inlet is provided on a first major surface 112 of the bifurcation panel 110 that is defined such that the direction (R) that points through the bifurcation panel from the first major surface 112 to a second major surface 114 corresponds to the fan rotation direction. This provides a particularly effective and / or efficient TCC system 100.

The invention relates to a high-efficiency two-sided top press, comprising a bearing base, a lower hinge beam, an upper hinge beam, a bearing chamber, a hydraulic bag, an upper pressure bearing block, a lower pressure bearing block, an auxiliary driving hydraulic column, an anvil, and a pressure sensor , Hydraulic station and control system, the lower end surface of the lower hinge beam is connected with the upper end surface of the bearing base, the upper end surface is connected with the upper hinge beam and distributed coaxially with each other, and the upper end surface of the lower hinge beam and the lower end surface of the upper hinge beam are both equipped with pressure grooves , the upper bearing block and the lower bearing block are embedded in the load-bearing chamber and are offset against the surface of the pressure-bearing chamber through the hydraulic bag. The front faces of the upper bearing block and the lower bearing block are both provided with molding cavities, and the top hammers are respectively embedded in the upper bearing block. , In the molding cavity of the lower bearing block. On the one hand, the present invention greatly simplifies the structure of the hydraulic drive system and improves the operating efficiency of the hydraulic drive system. On the other hand, the pressure output is uniform and stable, and the driving force can be effectively assisted to adjust.

The invention relates to a multi-stage liquid CO 2 Phase change composite fracturing reconstruction system and method, the composite fracturing stimulation system includes liquid CO 2 Injection unit, conventional fracturing fluid injection unit, underground blast fracturing unit and surface control unit; said liquid CO 2 The injection unit and the conventional fracturing fluid injection unit are connected to the underground blasting and fracturing unit through the fracturing string; the ground control unit is connected to the underground blasting and fracturing unit through cables; method of cracking. The composite fracturing reconstruction system provided by the present invention passes through multi-stage CO 2 Phase change and one-pass string achieve CO 2 Pre-amplification, make full use of CO 2 The safety of phase change blasting can effectively reduce the fracture pressure of rocks in low-permeability or deep tight oil and gas reservoirs; the driving pressure of underground crude oil can be increased by 2-5 MPa, and the flowback rate of fracturing fluid can reach more than 80% after 4 hours of fracturing. It can be extended for 6 to 18 months.