339results about How to "Easy flow control" patented technology

The invention discloses a small-sized closed horizontal circulating water channel device which is a closed flow circulating channel composed of sections. The top of a test section is open, a bent section of a medium guide section is provided with a medium guide corner rectifier, a bent section of a large guide section is provided with a large guide corner rectifier, and a '#'-shaped cellular rectifier and a net rectifier are arranged between the large guide section and a first contraction section sequentially. A small guide section is provided with a rotary shaft, and the rotary shaft is provided with a propeller at one end. By the structure, the closed horizontal circulating water channel has the advantages that a circulating pipeline flows stably; the water channel is suitable for observation of a flow field and observation of a test model; flow rate of a test section along a cross section is distributed evenly and the speed rate is controllable; speed of advection and speed of turbulence are controllable; and water transparency is high, and a fluid mechanics basic test, a ship maneuverability test, a large-sized algae cultivation method test, observation and shooting of a flowing pattern and the like can be performed.

An improved cryosurgical system for application of medical-grade liquid nitrogen to a treatment area via a small, low pressure, open tipped catheter. The system includes a console, including a touch panel computer, a cryogen module, a suction module and an electronics module, all packaged in a mobile cart, and a disposable spray kit. Improved features include optional low cryogen flow setting to reduce the cryogen flow rate by 50%, improved cryogen flow consistency reducing pressure pulses and peaks (improved sensors, control systems, and control algorithms), an integrated suction pump for improved consistency and self-checks, specified vent tube areas and corresponding maximum expected pressures during cryospray procedure; optional pressure sensing capability to monitor pressure during a treatment, and improved catheter design.

A control valve assembly that utilizes a butterfly valve having a valve body and a valve disc movable between a seated position and an open position. The control valve assembly includes a flow insert positioned along the interior of the valve body and generally aligned with a first outer sealing edge of the rotatable valve disc. The flow insert maintains close spacing to the first outer sealing edge of the valve disc as the valve disc initially moves away from the valve seat. The control valve assembly can also include a first, upstream butterfly cage and a second, downstream butterfly cage positioned on opposite sides of the valve body. The first and second butterfly cages aid in controlling the flow of fluid past the valve disc as the valve disc moves from its seated position to its open position.

The present invention relates to the use of a chemical composition to modify the physical properties (viscosity and interfacial tension) of heavy and extra-heavy crude oils, to increase their mobility. The chemical composition comprises or consists of a combination of systems based on ionic and non-ionic liquids, which may be pure or modified, mixed in an aqueous or organic medium as a dispersing agent, depending on the nature of the crude to be treated, together with a surfactant. The composition is mixed with the crude oil at a temperature between 5 and 100° C., at pressures from 1 atm (14.7 psi) up to about 680.2 atm (10,000 psi). The composition can be mixed with heavy crude oils, at the point of extraction from the well in the field, during the transport of crude oil in pipelines, or in the well discharge pipelines.

The invention discloses an oil-gas mixed transportation pipeline device and a method for simulating formation, blocking and melting of hydrates. The device comprises a reaction kettle I and a reaction kettle II, wherein the reaction kettle I and the reaction kettle II are connected with the same gas supplying system; a grouting port is formed in the reaction kettle I; the top of the reaction kettle II is communicated with the bottom of the reaction kettle II through a circulation pipeline, and a liquid injection port is formed in the circulation pipeline; each of the reaction kettle I and the reaction kettle II is provided with a temperature control device for adjusting the temperature; a detection device for detecting the reaction state of the natural gas hydrates in a pipeline is further mounted on the circulation pipeline and connected with a data processing system. The oil-gas mixed transportation pipeline device and the method for simulating formation, blocking and melting of the hydrates have a very good effect on controlling loss caused by long-time production suspension as a result of blocking of the pipeline in a high-risk blocking state.

A method of making a membrane for use with a flow control system is disclosed. A female mold body portion and a male mold body portion are provided. A body portion support member configured to receive at least a portion of the female body portion and at least a portion of the male body portion is provided. The female and male body portions are separated from one another. Membrane manufacturing material is provided to a concave portion of the female mold body portion. The sleeve is moved downward. The lower mold portion is lowered until it is just short of its final intended position. Excess membrane manufacturing material, if any, is removed from around the seam of the mold. The upper mold portion is lowered the remaining distance so that the two mold portions are separated by the exact distance desired for the final membrane thickness.

A flow control system is disclosed for use with a micropump for pumping a fluid to be administered through a catheter. The flow control system includes a first body portion, a membrane and a second body portion. The first body portion has a membrane-receiving inner surface, an inlet aperture in fluid communication with the micropump, and a mating surface disposed about the membrane-receiving inner surface and configured to mate with a mating surface of the second body portion. The membrane has a reinforcement annulus configured to be received by the first body portion membrane-receiving inner surface and a domed portion oriented to be movable from a closed position, in sealable communication with the inlet aperture, and an open position, in spaced apart relation from the inlet aperture. The membrane is oriented and sized to be biased in the closed position. The second body portion has a membrane-receiving inner surface, an outlet aperture configured to communicate with the catheter, and a mating surface disposed about the membrane-receiving inner surface and configured to mate with the mating surface of the first body portion. At least a portion of the membrane reinforcement annulus is positioned within the inner surface of the first body portion. The first body portion mating surface is positioned and maintained in sealed relation with the second body portion mating surface. Operation of the micropump causes the fluid to (a) flow from the micropump to the first body inlet aperture, (b) exert a pressure sufficient to move the membrane from the closed position to an open position, (c) flow around the membrane and through the second body outlet aperture and into the catheter.

A flow control valve for a gardening pipe includes a main body, a control member, a rotation knob, and a bottom cap. Thus, the flow control valve has a simplified construction and is made easily, thereby decreasing costs of fabrication. In addition, the water flow rate of the flow control valve is controlled exactly by provision of the water outlet holes having different sizes, thereby facilitating a user operating and controlling the water output the flow control valve.

The invention discloses a specific piston type wound disinfector in a medical apparatus and belongs to the technical field of the medical apparatus. The specific piston type wound disinfector comprises an apparatus shell; a disinfectant sprayer is installed in the middle of the outer wall at outside of the apparatus shell, and the outer wall at the right side of the apparatus shell is equipped with an elastic rubber sleeve matched with the disinfectant sprayer, and a separating plate can separate the inner cavity of the apparatus shell to be a power cavity at left side and a disinfectant cavity at the right side; the other end of a quantitative fluid outlet device is provided with a catheter. The specific piston type wound disinfector is simple in operation; a fluid splitter plate on the annular installing base can store equal amount of disinfectant in a disinfectant storage bottle in the disinfectant cavity through pressure strength generated by the piston reciprocating motion, thus the outflow of the disinfectant can be controlled conveniently; the outer wall of the handle is equipped with a sponge sleeve with an S-type anti-slide texture, thus the friction force and the comfortlevel of the handle surface are effectively improved; power for reciprocating motion of the piston is provided by the motor; the specific piston type wound disinfector is convenient to continuously work and avoids the trouble of frequently replacing a lithium battery and effectively improves the device practicability.

A hydraulic tool has a motor, a valve, a hydraulic intensifier and a supply connector. The hydraulic intensifier is arranged between the valve and the motor. The valve and the motor are arranged behind one another in a longitudinal direction of the tool. The hydraulic intensifier has at least one intensifier piston having a movement direction that is positioned at a first angle greater than 0° relative to the longitudinal direction of the tool.

The invention relates to an ignition and combustion testing device, and aims to provide a device for ignition and combustion of a primary boron product with high energy density laser. The device comprises an ignition module, an atmosphere control module, a combustion diagnostic module, and a data recording module, wherein the ignition module comprises a high energy density laser device and a transparent ignition combustion tube, a laser tube is fixed on a base via a laser tube support frame, the transparent ignition combustion tube is arranged on an iron stand, and a sample bracket is arranged in the center of the transparent ignition combustion tube. The device provided by the invention can rapidly heat a primary boron product sample to a temperature above the boiling point of boron oxide in several milliseconds, which is far better than the conventional electric heating ignition manner, and can realize rapid ignition and complete combustion of the primary boron product. The laser device has low electric power, and can be used after being supplied with 220V family electricity, resulting in good generality. The laser heating range is centralized, and the energy utilization efficiency is high.