CZ2014545A3 - Filling/discharging system for composite pressure vessels - Google Patents

Abstract

Filling / discharging system (3) for composite pressure vessels comprising an inner shell (1) and an outer composite shell (2), said filling / discharge system (3) comprising: an annular collar (8) for concentrically between the inner shell ( 1) and the outer composite shell (2), said collar is provided with a recess on a portion of the inner diameter intended to abut the outer composite shell by the annular disc (5); an annular disc (5) shaped to fit closely into a recess on the annular collar; a circular sleeve (6) with a threaded central hole, suitable for installing a valve or flange, the outer surface of said sleeve (6) comprising a first surface portion disposed closest to the outer portion of the filling / discharge opening, a second surface portion adjacent to the first portion and the third portion adjacent to the second portion, the first portion comprising a recess, the second portion being provided with means for locking the housing (6) in the container and allowing the pressure stresses to resist, and the third portion comprising at least one groove for receiving the sealing member (7) ). The solution further provides a composite pressure vessel comprising an inner shell (1), an outer composite shell (2), and a filling / draining system (3).

Description

1!

Filling / Discharge System for Composite Pressure Vessel Technology

The present invention relates to a construction of a filling / dispensing system for a composite pressure vessel.

Background Art

Composite pressure vessels generally serve to store, transport and distribute liquids and gases at high or low pressure, eg, LPG, CNG, industrial gases or air. As a rule, a composite pressure vessel consists of a composite tank comprising an outer composite shell that bears all pressure stresses, an inner shell that provides a tank seal, and is commonly made of metal or polymer, and a fill / drain system including a threaded sleeve for mounting a valve or flange for filling the container and then distributing the contents of the container.

The filling / draining system must be integrated into the tank and provide impermeability to the gases between the inner jacketed and the coupling means. Numerous types of construction are known in the art. Tightness is ensured by securing the inner shell of the composite tank in the sleeve assembly and sealing with a sealing element (eg, sealing ring) to prevent leakage. Typically, the outer portion of the sleeve is secured in the container by at least partially enclosing it into the composite composite shell of the composite tank to prevent release of the sleeve from the composite tank.

Filling / dispensing systems known in the art protrude from the composite tank, making them much more susceptible to damage and also increasing the overall length of the composite container. In addition, they often have a complicated design. Accordingly, it is an object of the present invention to provide a composite / dispensing system for composite pressure vessels that would reduce container size by embedding the filling / dispensing system in a composite package, while maintaining a simple and inexpensive construction. 9

SUMMARY OF THE INVENTION The present invention provides a filling / dispensing system for a composite pressure vessel comprising an inner shell and an outer composite shell, said filling / discharge system comprising: a circular collar arranged concentrically between the inner shell and the outer composite shell, said collar being provided recessing on an inner diameter portion intended to abut the outer composite shell by means of an annular disc, annular disc shaped to fit into a recess on a circular collar, a circular threaded sleeve with a central hole provided with a thread (conical or parallel) suitable for installing the valve or a connecting flange, wherein the outer surface of said housing comprises a first surface portion that is disposed closest to the outer portion of the filling / discharge opening, a second portion of the surface adjacent to the first portion STI and a third portion adjacent the second, the first part comprising the recess, the second part is provided with means for locking the sleeve in the container and allowing it to withstand compressive stress and the third portion comprises at least one groove for receiving a sealing element.

In a preferred embodiment, the annular disk is threaded on the inner diameter and the sleeve is provided with a fastening thread on at least a portion of the second portion of the outer surface so that, upon installation of the sleeve in the neck of the container, a thread is formed with the disk and the composite sleeve. Thus, the thread serves as a fastening means, which secures the locking of the sleeve in the throat and permits the production of a releasable filling / draining system in which the components (eg sealing elements) can be replaced. In addition, such a construction allows for easy periodic inspections of the inner shell. In this embodiment, the diameter of the second housing portion is greater than the diameter of the first housing portion and also is greater than the diameter of the third housing portion. The recess on the first housing portion in this embodiment serves to position the marking ring. This recess also has a connecting function, eg the marking ring may have a hexagonal opening and the housing may have a hexagonal protrusion, the marking ring may then be fixed (eg bolted) on the composite package, thereby also locking the housing. In a further preferred embodiment, the second housing portion has a smaller diameter than the third housing portion, thereby providing a means for seating. The disc is adjacent to the second housing portion. The recess on the first housing portion is smaller in diameter than the second housing portion, and the edge portions 3 of the composite housing, optionally the marking ring, are inserted therein. Preferably, the second housing portion is provided with a planar shoulder or cutouts to prevent rotation in the composite package. The task of the collar is to ensure the optimal shape of the inner shell and its support in the location of the seal. Another purpose of the collar is to create a "retaining wall" to which the inner shell can be sealed by a sealing element / elements. Preferably, the collar is made of a thermoplastic injection molding method.

For marking and technological purposes, the sleeve assembly may be provided with a marking ring. The marking ring may also provide for proper distribution of the fibers around the container neck. In the first embodiment, the process ring prevents rotation of the housing and thus allows the installation of the valve.

The present invention also provides a composite pressure vessel comprising an inner shell, an outer composite shell and a fill / discharge system of the invention. Preferably, the inner shell is made of a metal, such as steel, or a polymeric material such as polyethylene or polyethylene terephthalate.

The structure according to the invention allows the filling / dispensing system to be incorporated into the composite package.

The invention will be further elucidated by means of drawings and exemplary embodiments, which should not be construed as limiting the claimed scope. ... Ί ,. . · 'Á / »*. in * -— f * '***

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FIG. 1 Overview of the composite pressure vessel in cross section.

FIG. 2 A cross section of the filling / draining system of Example 1.

FIG. 3 Top view of the filling / draining system according to Example 1.

FIG. 4 A cross section of the filling / draining system of Example 2.

FIG. 5 Drawing of the fill / drain system in partial distribution according to example 2. 4 * imk i c n im Examples of ferevedeal invention Example 1

FIG. 1 shows a composite pressure vessel which includes an inner shell 1, an outer shell 2, and a shell / discharge system 3. The filling / discharge system 3 comprises (®br. 2, 3): - an annular collar 8, for concentric location between the inner the collar 8 is provided with a recess on a portion of the inner diameter intended to abut against the outer composite shell 2 by the annular disc 5, the annular disc 5 formed to fit tightly into the recess on the circular collar 8, circular threaded a housing 6 with a central bore provided with a thread (conical or parallel) suitable for installing a valve or a connecting flange, the outer surface of said housing 6 being composed of a first surface portion disposed closest to the outer portion of the filling / discharge opening; parts of the surface adjacent to the first part and the third portion adjacent to the second, the first portion including a recess, the second portion being provided with means for arresting the housing 6 in the container to withstand pressure stress, and the third portion comprising at least one groove for receiving the sealing member 7.

The disc 5 is threaded on the inside diameter and the sleeve 6 is provided with a fastening thread on at least a portion of the second portion of the outer surface so that, upon installation of the sleeve 6 in the neck of the vessel, a connection with the disc 5 and the composite shell through the thread 9 arises. which secures the locking of the sleeve 6 in the neck and allows to produce a releasable filling / draining system in which the components (eg sealing elements) can be replaced. In addition, such a design allows for easy periodic inspections of the inner casing I. In this example, the diameter of the second casing portion is greater than the diameter of the first casing portion and also greater than the diameter of the third casing portion. The recess on the first housing portion in this pattern serves to position the marking ring 4. The marking ring 4 has a hexagonal opening, and the housing 6 has a hexagonal recess, the marking ring 4 is attached (eg, bolted) to the composite housing thereby also locking the housing 6. 5 Example 2

FIG. 1 shows a composite pressure vessel comprising an inner shell 1, an outer shell and a composite shell 2, and a filling / draining system 3. The filling / discharge system 3 comprises (®br. 4,5): - an annular collar 8, for concentric location between the inner the outer collar 2, wherein said collar 8 is provided with a recess on a portion of the inner diameter intended to abut the outer composite shell 2 through the annular disc 5 - annular disc 5 shaped to fit closely into the recess on the circular collar 8, a circular threaded sleeve 6 with a central hole provided with a thread (conical or parallel) that is suitable for installing a valve or flange, the outer surface of said housing consists of a first surface portion disposed closest to the outer portion of the aperture for filling / discharging the second surface portion adjacent the first part and the third part no a portion adjacent to the second, in which the first portion comprises a recess, the second portion is provided with means for locking the housing 6 in the container and permitting to withstand compressive stresses, and the third portion comprises at least one groove for receiving the sealing member 7.

The second housing portion 6 has a smaller diameter than the third housing portion 6, thereby forming a fastener. The disc 5 adjoins the second housing part 6. The recess in the first housing part 6 has a smaller diameter than the second housing part 6 and includes the end portions of the composite housing and optionally the marking ring 4. The first housing portion 6 may preferably be provided with a planar shoulder or cutouts to prevent rotation in the composite package.

Industrial usability

The composite pressure vessels provided with the filling / dispensing system of the present invention can be used to store and transport high and low pressure liquids and gases, such as LPG, CNG, industrial gases or air. The described construction is particularly suitable for fully wrapped pressure vessels.

Claims (6)

PATENT REQUIREMENTS 1. A filling / discharge system (3) for composite pressure vessels comprising an inner shell (1) and an outer composite shell (2), characterized in that the filling / discharge system (3) comprises: - a circular collar (8) ) for positioning concentrically between the inner outer shell (1) and the outer composite shell (2), said collar (8) being provided with a recess on a portion of the inner diameter intended to adhere to the outer composite shell through the annular disc (5) - annular disc ( 5) shaped to fit closely into the recess on the circular collar £ * ((> _....................... - round threaded sleeve (6) with central a threaded aperture for installing a valve or a connecting flange, wherein the outer surface of said housing (6) comprises a first surface portion disposed closest to the outer portion of the filling / discharge aperture; adjacent to the first portion and the third portion adjacent to the second portion, the first portion comprising a recess, the second portion being provided with means for locking the housing (6) in the container and allowing the pressure stresses to resist, and the third portion comprising at least one groove for receiving the sealing member ( 7). Filling / dispensing system according to claim 1, characterized in that the disc (5) is threaded on the inside diameter and the sleeve (6) is provided with a fastening thread on at least a portion of the second part of the outer surface so that after installation of the sleeve (6) into the container neck has been connected to the disc (5) by a thread; wherein the diameter of the second housing portion (6) is greater than the diameter of the first housing portion (6) and also is greater than the diameter of the third housing portion (6); and wherein the recess on the first housing portion (6) is intended to receive a marking ring (4). Filling / dispensing system according to claim 1, characterized in that the third housing part (6) has a larger diameter than the second housing part (6), thereby forming a fastening means; wherein the disc (5) abuts the second housing part (6); wherein the recess in the first housing portion (6) is smaller in diameter than the second housing portion (6) and is intended to receive the edge portions of the composite housing (2) and optionally the marking ring (4). Filling / discharge system according to claim 1 or 3, characterized in that it is provided with a marking ring (4). 7 Composite pressure vessel, characterized in that it comprises an inner shell (1), an outer composite shell (2), and a filling / draining system (3) according to any one of the preceding claims. Composite pressure vessel according to claim 5, characterized in that the inner shell (1) is made of metal, eg steel, or of a polymer, eg polyethylene or polyethylene terephthalate.