US-12618526-B2 - Nozzle for high-pressure cylinders

US12618526B2US 12618526 B2US12618526 B2US 12618526B2US-12618526-B2

Abstract

Nozzle for cylinders containing a high-pressure fluid, including: a lower body designed to be applied stably to the mouth of the cylinder; an intermediate component, housed rotatably in a seat of the lower body and designed to accommodate an accessory, such as a fluid dispensing tap, a valve, or other; and an upper ring nut element designed to engage with the lower body to lock stably in position the intermediate component, with the accessory oriented in the required direction with respect to the cylinder.

Inventors

Giovanni Artusi

Assignees

CARBON CYLINDER S.R.L.

Dates

Publication Date: 20260505
Application Date: 20220324
Priority Date: 20210412

Claims (7)

1 . A nozzle for use with a cylinder that contains a high-pressure fluid, the nozzle comprising: a lower body adapted to be applied to a mouth of the cylinder; an intermediate component rotatably housed in a seat in said lower body, said intermediate component adapted to receive an accessory therein; and an upper ring nut element engageable with said lower body so as to stably hold said intermediate component in position such that the accessory is oriented with respect to the cylinder, wherein the seat is internal of said lower body, an upper section of a wall of said lower body having an internal thread, said upper ring nut having an external thread that engages the internal thread of said lower body so as to maintain said intermediate component in the position, wherein said lower body has a shank therebelow, the shank having an external thread adapted to engage with an internal thread of the mouth of the high-pressure cylinder, wherein said intermediate component has a widened base connected to an upper section, the upper section having a shoulder or step, the upper section having a diameter less than a diameter of the widened base, wherein a lower edge of said upper ring nut element abuts the step or shoulder.
2 . The nozzle of claim 1 , wherein said intermediate component has a plurality of annular seats, at least one annular seat of the plurality of annular seats receiving a sealing gasket thereon.
3 . The nozzle of claim 1 , wherein the shank has another internal thread adapted to receive another accessory.
4 . The nozzle of claim 1 , wherein said upper ring nut element has a polygonal head adapted to engage with a tightening key, the polygonal head abutting an upper edge of the wall of said lower body.
5 . The nozzle of claim 4 , wherein said upper ring nut element has a series of holes adapted to receive the tightening key, said upper ring nut element being flush with the upper edge of said lower body.
6 . The nozzle of claim 1 , wherein said lower body has a lower conical extension.
7 . The nozzle of claim 1 , wherein the nozzle is adapted to be applied to a non-circular section of the high-pressure cylinder.

Description

The present invention relates to a nozzle for cylinders, in particular for containing fluids (liquid or aeriform) at high pressure, provided with a tap or valve for dispensing the fluid. Various types of high-pressure cylinders are known, obtained from an inner liner in metal or plastic material, on which a nozzle in metal material is attached, normally provided with a thread suitable for tightening a tap or a seal valve. The liner is then covered with one or more layers of reinforcing threads. In the case of cylindrical cylinders with a circular cross section, the application of the nozzle does not create any problems, since the accessory it carries (tap, valve, etc.), oriented transversely to the axis of the cylinder, is always correctly oriented, thanks to the axial symmetry of the cylinder. However, in the case of cylinders with a non-circular section, by way of a non-limiting example square or rectangular, which are currently becoming increasingly common, the end of the screwing stroke of the nozzle on the cylinder, or on the nozzle, can lead to incorrect directionality of the accessory. The accompanying FIG. 1 shows schematically in axonometry a square section cylinder 1, having an internally threaded mouth 2 for screwing in an accessory. FIG. 2 is a plan view from above of the cylinder, with an accessory 3 mounted, such as, for example, a valve or a fluid dispensing tap according to the prior art, with the outlet orifice 4, not correctly oriented, while FIG. 3 is a view like that of FIG. 2, showing how the accessory 3 and the relative orifice 4 should be correctly oriented, along a median plane of two opposing faces of the cylinder, to facilitate handling thereof. FR 3095848 A1 discloses a pressurised gas reservoir head assembly, comprising a structure having an opening and a head comprising a base arranged in the opening and a valve assembled with the base, wherein the base comprises a boss arranged outside the reservoir, at least one first pipe comprising an axial portion along the non-emerging axis connected to the inside of the reservoir, and at least one radial portion drilled radially into the boss until it reaches the axial portion, and wherein the valve has a substantially annular shape comprising a first bore corresponding to the boss in order to be able to be engaged on the boss and at least one second pipe, one end of which opens into the first bore axially in line with the at least one radial portion. There is therefore the problem of providing a nozzle which can be mounted on a cylinder with a non-circular cross section, so as to ensure the required orientation of an accessory, in particular an accessory axially connected to the nozzle. The object of the invention is precisely to achieve this objective. More particularly, an object of the invention is to provide a nozzle structure or a structure which can be screwed to the nozzle itself, which allows the accessories to be given the correct directionality on each type of cylinder. Another object of the invention is to provide such a nozzle which ensures an excellent seal to the fluid contained in the cylinder. Yet another object of the invention is to provide such a nozzle which is easily assembled and disassembled, as well as simple and inexpensive to manufacture. These and other objects of the invention are achieved by the nozzle according to the invention, which has the features of the appended independent claim 1. Advantageous embodiments of the invention are disclosed by the dependent claims. Substantially, the nozzle for cylinders containing a high-pressure fluid comprises: a lower body designed to be stably applied to the mouth of the cylinder; an intermediate component, rotatably housed in a seat of the lower body and apt to accommodate an accessory, such as a fluid dispensing tap, valve, or other; and an upper ring nut element apt to engage with said lower body to hold the intermediate component firmly in position, with said accessory oriented in the required direction with respect to the cylinder, wherein said seat is provided internally to said lower body, and wherein the upper end section of the wall of said lower body has an internal thread with which an external thread of the upper ring nut element engages in order to hold the intermediate component in the required angular position. Further features of the invention will be made clearer by the following detailed description, referred to its embodiments purely by way of non-limiting example, illustrated in the accompanying drawings, in which: FIG. 1 is a schematic view in axonometry of a square-section high-pressure cylinder without the fluid dispensing nozzle: FIG. 2 is a plan view from above of the cylinder of FIG. 1, with a nozzle mounted according to the prior art, in which a fluid dispensing tap is not correctly oriented: FIG. 3 is a view like that of FIG. 2, showing how the fluid dispensing tap should be correctly oriented: FIGS. 4a and 4b are overall views, respectivel