47results about How to "Avoid flow rate" patented technology

A gas filling apparatus in the present invention includes an accumulator, a compressor, a pressure sensor for detecting the pressure of gas delivered from a dispenser to be delivered to a gas tank, a regulating valve for regulating the gas flow rate, and a controller. To prevent a rapid rise in pressure of gas supplied to the gas tank, the controller includes an opening control unit for controlling the opening of the regulating valve when a detected value of the pressure sensor is lower than a pressure corresponding to the gas pressure in the accumulator by a predetermined value or more, and a compression control unit for controlling drive of the compressor so that the compressor compresses sucked gas when a pressure difference of a pressure detected by the pressure sensor from a pressure corresponding to the gas pressure in the accumulator becomes a value smaller than the predetermined value.

A fluid supply apparatus which supplies fluid to a medical apparatus includes: a pump mechanism including a first pump capable of a suction operation of the fluid after a feeding operation of the fluid, and a second pump capable of a suction operation of the fluid during the feeding operation and a feeding operation of the fluid during the suction operation; a flow path which includes an elastic member and which communicates with the first pump and the second pump and supplies the fluid to the medical apparatus; and a flow path deforming unit which deforms a part of the flow path. The flow path deforming unit starts first deformation of the flow path before the first pump switches from the feeding operation to the suction operation, and completes the first deformation and starts second deformation of the flow path during the feeding operation by the second pump.

A fluid supply apparatus which supplies a fluid to a medical apparatus includes: a pump mechanism including a first pump capable of carrying out a intake operation of a fluid and a feeding operation of the fluid, and a second pump capable of alternately carrying out a intake operation of the fluid and a feeding operation of the fluid; a flow passage which includes an elastic member and which communicates with the pumps and supplies the fluid to the medical apparatus; a pressure fluctuation detecting unit capable of detecting fluctuation in internal pressure in the flow passage; and a flow passage deforming unit which deforms the flow passage according to the fluctuation in the internal pressure.

The invention discloses a novel power battery pack system based on fuzzy PID control and a control method thereof. The system comprises a battery management system, a cooling liquid circulating main pipeline, cooling liquid primary/secondary branch pipes, cooling liquid flow control valves, primary/secondary spherical liquid distribution pivots and s-shaped flat heat exchange pipes. The cooling liquid circulating main pipeline is communicated with a cooling liquid primary branch pipe through a primary spherical liquid distribution pivot, and the cooling liquid primary branch pipe is connectedwith a cooling liquid secondary branch pipe through a secondary spherical liquid distribution pivot. The tail end of each cooling liquid secondary branch pipe is connected with two s-shaped flat heatexchange pipes which are arranged on the outer surface of the battery cell at an interval of 180 degrees, and a cooling liquid flow control valve is arranged on each cooling liquid primary branch pipeand is driven by a stepping motor controlled by a fuzzy PID controller. According to the invention, the power battery pack can be controlled to always work in the optimal temperature range; the balance of the internal temperature of the battery pack is ensured; the disadvantage of unbalanced overall temperature of the battery pack is solved; and the service life is prolonged.

An implantable drainage device for draining the cerebro-spinal fluid of a patient, the device including:

• • a drainage valve including a valve member and a valve seat;
  • a control unit suitable for modifying an operating parameter of said valve, at least as a function of a measurement (D) of the fluid flow rate through said valve;
  • an actuator controlled by the control unit, suitable for modifying the operation of said valve as a function of said operating parameter as modified by the control unit; and
  • a mass flowmeter suitable for evaluating said flow rate of fluid through said valve.

A flow rate regulation valve comprising a housing (11) formed with a valve hole (13), a needle valve (60) moved relative to the valve seat (16) in the housing, and a flow rate adjust knob (40) mounted at the proximal end of the needle valve extending from the housing, wherein the needle valve is moved relative to the valve seat by rotating the flow rate adjust knob thereby regulating the flow rate of fluid flowing through the valve hole, the flow rate regulation valve further comprising a knob fixing means (35) for stopping the rotation of the flow rate adjust knob. As a result, the flow rate is prevented from being changed accidentally by a user or the like. Further, the value may have a seal adjust means (20) adjusting the sealed state between the housing and the needle valve. The seal adjust means may be formed as a part of the housing, and may be fixed to the housing by a fixing pin (15).

The invention relates to a patient table (40) for an x-ray system with a table top, the length of which can be optionally varied. The table top can be of a modular design, or can comprise a plurality of table segments or slats (42) depending on the type of a shutter.

The flow rate detection device includes a sensor element and a support. The sensor element includes: a cavity which is formed in a rear surface of a plate-shaped semiconductor silicon substrate by removing part of the plate-shaped semiconductor silicon substrate; and a thin film portion which is disposed over the cavity and includes a detecting element. The support includes a fitting portion into which the sensor element is to be disposed. The sensor element is supported to the fitting portion by an adhesive in a floating manner. A gap formed between the sensor element and the fitting portion is filled with an anti-undercurrent material. The sensor element has a texture including protrusions and depressions formed on a surface opposed to the fitting portion, and the anti-undercurrent material is brought into contact with the texture.

A front frame for an alternator mounted on a motor bicycle has a cooling air outlet window formed at an outer peripheral side of a stator coil wound on a stator and a cooling air inlet window formed at a front side of the alternator, namely, at an engine block side along an axis direction separated from a cooling fan. An outlet section of a cooling air duct is placed at a position near the cooling air inlet window. This configuration of the cooling system enhances its cooling capability of forcedly blowing the cooling air to the inside of the alternator, and prevents adhesion and accumulation of mud and sand to the cooling air inlet window, splashed to the cooling air inlet window while the motor bicycle is driving on a mud road.

The invention generally provides a moisture barrier article comprising a polymer matrix with water vapor permeability equal to or below 1 g mm/(m2 day) at 90% relative humidity difference and the intended temperature of use between 15° C. and 30° C., and moisture absorbing particles dispersed in the matrix in an essentially uniform manner, wherein the moisture absorbing particles have an average diameter of between 1 and 15 micrometers and wherein the article has an average wall thickness to mean particle diameter of at least 10:1.

In an oil pump structure of an automatic transmission using a torque converter, a hydraulic pressure chamber is defined by a pump housing and a pump cover, to rotatably accommodate therein inner and outer rotors. First and second inflow ports respectively communicating with an oil strainer and a control valve are formed in the outside surface of the pump cover separately from each other. First and second oil inflow passages communicating with the respective inflow ports, a merged-flow portion that downstream portions of the first and second oil inflow passages are merged with each other, a downstream-side oil distribution channel intercommunicating a downstream side of the merged-flow portion and the hydraulic pressure chamber, are formed in at least one of the pump housing and the pump cover.

The invention discloses a urea backmixing and pyrolysis apparatus applicable to a SCR denitration system and a pyrolysis method. The apparatus comprises a tower body; the tower body is provided with, from top to bottom, a combustion-supporting wind pipeline, an inlet variable-diameter section, a pyrolytic reaction section, an outlet variable-diameter section and an outlet pipeline; the pyrolytic reaction section is provided with a spray gun layer, a compensation wind pipeline layer and a gas flow equalizing plate from top to bottom; the number of the spray gun layer is at least one; and the spray gun layer is provided with a plurality of spray guns used for spraying an atomized urea solution, the plurality of spray guns are uniformly and radially distributed on the tower wall of the pyrolytic reaction section, and the spraying direction of each of the spray guns downwardly extending along the axial direction of the pyrolytic reaction section. According to the invention, the urea solution is mixed with combustion-supporting wind for primary pyrolysis and then with compensation wind for secondary pyrolysis, so the mixing degree of the urea solution and hot gas is promoted and generation of urea deposit and crystal is prevented; thus, the decomposition efficiency of the urea solution is improved.

The invention discloses a Venturi injection pipe for a dust remover. The Venturi injection pipe comprises a diffusion pipe, Venturi nozzles and filter drums; air outlet holes are formed in the diffusion pipe; the upper end of each Venturi nozzle is fixedly arranged on one air outlet hole; a lower opening of each Venturi nozzle is arranged above an opening of one filter drum; each Venturi nozzle comprises a shell, a jet pipe and reinforcing ribs; each shell is a hollow column body; an upper opening and a lower opening of each shell are shaped like an outwards-expanded horn; the center of each shell is provided with one jet pipe; the periphery of each jet pipe is fixed together with the outer wall of one shell by using the plurality of reinforcing ribs; and spaces in each jet pipe and one shell are partitioned into a plurality of drainage air passages by the reinforcing ribs.

The invention discloses an enhanced corrugated filtration pipe dust removing device, which comprises a pulse valve arranged on a gas collection box, a blowing main pipe communicated to the gas outletof the gas collection box, and a blowing device arranged on the blowing main pipe, wherein a flower plate is arranged below the blowing device, and is provided with an opening corresponding to the blowing device, and a corrugated filtration unit is arranged at the opening position. According to the present invention, the blowing device uses the Venturi spraying nozzle, and the corrugated filtration unit uses the enhanced corrugated filtration pipe, such that the service life of the product is substantially prolonged, the standardized production can be conveniently achieved, the production efficiency is improved, and the production and maintenance cost can be reduced.