摘要:
The invention relates to a safety valve for a cryogenic insulated gas cylinder, which comprises a valve body, and the valve body further comprises a gas inlet flow channel, a valve seat, a slide way, a valve core and a spring, a gas inlet connecting thread and an adjusting nut. An adjusting nut exhaust hole set on said adjusting nut, a spring set between the said adjusting nut and a spring bracket with an exhaust hole. A valve assembly further comprises the valve core, a plurality of guide rings, a positioning steel ball and a valve flap, a valve core exhaust hole is provided in the valve core. The safety valve has high stability in discharge pressure and return pressure, high repeatability and good sealing performance, and is firm in structure, difficult to be damaged and high in safety.
摘要:
Apparatus to interface with a corrugated profile are disclosed. An example apparatus for use with a fluid regulator includes an elastomeric ring having a corrugated profile that corresponds to a corrugated profile of a diaphragm of the fluid regulator. The elastomeric ring is to be positioned between a valve body and a bonnet of the fluid regulator to clamp the diaphragm between the valve body and the bonnet. The example apparatus includes a metallic ring positioned between the valve body and the bonnet to contact the elastomeric ring to support the elastomeric ring.
摘要:
A dosing valve for administering a reducing agent into an exhaust stream within an exhaust manifold of an internal combustion engine. The dosing valve includes a valve needle internally coaxial to a valve body and held in a closed position by a force of compressed spring acting axially and held in relation to the valve needle and valve body. The negative impact of varnish and dehydrogenated compounds, or coking products, of hydrocarbon based reducing agents, is substantially reduced or eliminated. Additionally, this includes decreased sensitivity to the negative impact of the precipitates and crystals that come out of the solution due to temperature change with urea-based reducing agents.
摘要:
A fuel dosing device for a fuel injector of an aircraft turbomachine, including an opening, a movable member for sealing the opening, and elastic return, with the member able to be displaced under the effect of the fuel pressure. The device includes a first outlet communicating with a primary circuit of the injector as well as a second outlet communicating with a secondary circuit. In addition, it is designed such that up to a defined level of displacement of the sealing member, the latter allows the fuel coming from the opening to reach the first outlet and, only beyond the defined level of displacement, the member allows the fuel coming from the opening to reach the second outlet.
摘要:
A tip-resistant valve plug comprises a valve head, first and second retention legs, and an anti-tip fin. The valve head defines a fluid barrier. The anti-tip fin and the retention legs extend from the same side of the valve head. The anti-tip fin comprises a groove that allows the valve head to flex along a longitudinal fin axis; the anti-tip fin extends from the side of the valve head to a fin height dimension that is greater than a relief spring compression dimension caused by the tip-resistant valve moving between a closed position and an open position; or the valve head has a smaller moment of inertia evaluated in a direction the anti-tip fin extends across the valve head than a moment of inertia evaluated in a direction normal to the direction the anti-tip fin extends across the valve head.
摘要:
A pressure retention valve including a housing having an inlet passage and an outlet passage that can be connected together and a separating diaphragm subdividing the housing into two portions, wherein, in operation of the valve, a first portion conveys fluid and a second portion is fluid-free. The valve further includes a valve seat defining an end of the inlet passage, arranged in the fluid-conveying portion of the housing, and has a first sealing surface, a shut-off body which is arranged movably in the fluid-conveying portion of the housing and has a second sealing surface, and a spring element having a spring force, which is arranged in the fluid-free portion of the pressure retention valve. The spring element is so arranged that its spring force prestresses the second sealing surface in the direction towards the first sealing surface so that in a position of the shut-off body that closes the valve the sealing surfaces are in engagement with each other and the shut-off body separates the inlet passage from the outlet passage. The inlet passage is so arranged that a fluid flowing in through the inlet passage in operation of the valve is applied to the shut-off body in such a way that the fluid exerts on the shut-off body a force which acts in opposition to the spring force of the spring element. The shut-off body has a guide portion which extends into the inlet passage, and the inlet passage is portion-wise of such a design configuration that it forms a guide bush in which the guide portion of the shut-off body is guidedly received.
摘要:
A piston-type one-way valve, comprises: a valve body shell; and a valve cover, fixedly connected with said valve body shell via cover bolts; wherein said piston comprises: a piston head, and a sealing gasket; a cylinder convex is provided in a center of said valve cover; a piston rod sleeve is provided in said cylinder convex; said piston rod sleeve matches and sleeves said piston rod; a spring base is fixed at a first end of said piston rod sleeve; a first end of a spring is fixed on said spring base; a second end of said spring is fixed on said piston rod; and a ring-shaped element is provided along an opening edge of said cover, and fixedly connected with said opening edge of said cover; an inner circle of said ring-shaped element touches outer circles of said piston head or said sealing gasket closely.
摘要:
In a check valve for a compressor, a valve element includes an abutting surface and an outer circumferential surface. A valve hole includes a large-diameter portion and a small-diameter portion. A communicating window has such a shape that an opening area thereof gradually becomes larger with increasing distance from a valve seat. The check valve has an open state, a fully closed state, and a buffering state. When the abutting surface separates from the large-diameter portion and the outer circumferential surface opens the communicating window, the open state is defined. When the abutting surface closes the large-diameter portion and the outer circumferential surface interrupts communication through the communicating window, the fully closed state is defined. When the abutting surface separates from the large-diameter portion and the outer circumferential surface interrupts communication through the communicating window, the buffering state is defined. The hunting phenomenon is suppressed.
摘要:
A valve provided for the blocking or controlled establishment of a volume flow of a working fluid in a flow path of a technical device that transmits and/or stores energy, in particular in a control device for a hydraulic drive, an associated method of manufacture of the valve, and an apparatus with the valve. The valve includes first, second, and third valve openings, a moveable shut-off body moveable between an open-position and a close-position, a guide which guides the shut-off body between the open-position and the close position, and a retainer which exerts a retaining force on the shut-off body in the close-position. The guide has three guide parts. The first and third guide parts enclose the shut-off body and the second guide part includes a plurality of pins in a parallel orientation to the direction of movement of the shut-off body.
摘要:
A valve assembly in accordance with the present invention includes a head portion and a body portion. A throughbore extends through both the head portion and the body portion. A normal fluid flow path is formed within the valve assembly to provide for the controlled exit of a fluid. The valve assembly also includes an automatic pressure-relieving mechanism. The pressure-relieving mechanism includes a disc designed to burst or rupture at a predetermined pressure and an over-pressure fluid flow path for controlling the egress of over-pressure fluid.