摘要:
Structures and methods are provided for improving the distribution of fluids between exit flows from a split junction, such as a tee-junction. The improved distribution of fluids can result in a more equal distribution of both gases and liquids between the exits of the junction. The improvement can be provided by using a baffle structure, such as an annular baffle structure, upstream from the desired junction. The baffle structures can improve the distribution of fluids in the exit flows in various manners, such as by reducing the amount of vorticity or "swirl" in the input flow to the junction or by reducing the separation of gases from liquids within a flow.
摘要:
There is provided a cleaning apparatus for unclogging an irrigation emitter inlet filter by dislodging or crushing or breaking a trapped solids. In some embodiments, a ram (518) pushes the trapped solids out of a fluid inlet (560) of the emitter. In other embodiment, a constriction provided for retaining a particle has a changeable interior cross section. By changing the cross section of the constriction, the constriction is unclogged. In alternative embodiments the filtration member may include two rigid members (124)(130) moving in relation one to the other or the filtration member may be elastic (318). In further alternate embodiments the cleaning may be activated automatically or manually.
摘要:
A valve assembly that includes a valve body (42) defining a fluid passage. First (103) and second (105) ends of the fluid passage define first (102) and second (104) ports for fluid flow. A spring (76) and piston (50) are located in the fluid passage. The piston has a travel length extending between first (50a) and second (50b) positions with a third position (50c) located therebetween. The spring (76) biases the piston from the first toward the third position and is located outside the axial piston passage. The piston at least partially defines a first (98), second (62) and at least one third (64) opening. The first opening defines a variable constriction which increases in size as the piston moves from the first to third positions. The piston end wall defines the second opening and the piston sidewall defines the third openings. Movement of the piston from the third to second position exposes the third openings increasing the area of the second port (104).
摘要:
The invention relates to a steam valve (26) for pressure medium-actuated working circuits in which a spring element (27) is installed between the housing (28), cover (29) and countercontour (30). The pressure medium which is flowing through compresses the spring element (27) against the countercontour (30) in the direction of the opening so that a flow-through cross section is adjusted which enables the pressure medium to flow through in an almost unimpeded manner. In a direction counter to the throttling direction, the spring element (27) rests on the cover (29) and blocks the pressure medium from flowing through until a defined pressure has built up which lifts the spring element (27) on the inner side thereof from the countercontour (30) thus releasing a reduced flow-through cross section.
摘要:
Vanne pour le prélèvement à une pression faible d'un gaz d'un mélange gazeux, ladite vanne comprenant un corps de vanne (1) munie d'une entrée (12) pour le mélange, d'une sortie (13) de pompage et d'un orifice de prélèvement (15), et un clapet (2) coopérant avec le corps de vanne et situé entre ledit orifice et l'entrée, caractérisée en ce que le clapet comporte une membrane semi-perméable (6) ayant une première face (6A) communiquant avec ladite entrée et une seconde face (6B) communiquant avec ledit orifice de prélèvement, le clapet pouvant prendre une première position dans laquelle il laisse passer directement, le mélange de l'entrée vers l'orifice de prélèvement lorsque la pression du mélange est inférieure à une pression donnée et une seconde position dans laquelle il obture l'orifice de prélèvement lorsque la pression du mélange est supérieure à ladite pression donnée, le gaz à prélever traversant alors ladite membrane semi-perméable.
摘要:
A fluid flow restricting apparatus for use in a fluid mixer comprises a body (200) of solid material housing capillary tubes (226) in passages (206 to 224). Nuts (240) compress elastomeric 0-ring sealing members (242) such that they make fluid-tight seals between the capillary tubes and their respective passages. An inlet header (202) is demountably attached to the body (200) and has inlets (246, 248, 250 and 252) communicating with chambers (254, 256, 258 and 260) respectively. By means of the chambers, the inlet (246) is placed in communication with the capillary tubes in passages (206, 208, 210 and 212); the inlet (248) with the tubes in passages (214, 216 and 218): the inlet (250) with the tubes in passages (220 and 222) and the inlet (252) with the tube in the passage (224). The outlets of the capillary tubes com- municate with a common outlet passage (236). The apparatus may be readily dismantled and reassembled to allow the capillary tubes to be changes.
摘要:
There is provided a cleaning apparatus for unclogging an irrigation emitter inlet filter by dislodging or crushing or breaking a trapped solids. In some embodiments, a ram (518) pushes the trapped solids out of a fluid inlet (560) of the emitter. In other embodiment, a constriction provided for retaining a particle has a changeable interior cross section. By changing the cross section of the constriction, the constriction is unclogged. In alternative embodiments the filtration member may include two rigid members (124)(130) moving in relation one to the other or the filtration member may be elastic (318). In further alternate embodiments the cleaning may be activated automatically or manually.
摘要:
An aircraft gas transport system (110) includes a high pressure gas supply line (115) having a supply valve (120). The gas transport system also includes an equilibrium gas line (150) joined at junctions with the high pressure gas supply line upstream and downstream from the supply valve, and in flow communication with the high pressure gas supply line. The equilibrium gas line has an equilibrium valve (140) and a flow restrictor (135). The equilibrium valve has an exit orifice (173), and the flow restrictor is offset from the exit orifice of the equilibrium valve. A method for pressurizing a gas transport system (110) after a flow of gas through the gas transport system has been prevented (400) comprises: opening (410) an equilibrium valve (140) while maintaining a supply valve (120) closed to allow a flow of gas (GFA) through a flow restrictor (135) that controls a rate of change of a pressure downstream of the equilibrium valve; determining (420) that the pressure downstream of the equilibrium valve or supply valve is stabilized; and opening (430) the supply valve to provide a flow of gas (GFB) through the supply valve at an operating pressure.