AU2005100071A4 - A Composite Storage Tank - Google Patents
A Composite Storage Tank Download PDFInfo
- Publication number
- AU2005100071A4 AU2005100071A4 AU2005100071A AU2005100071A AU2005100071A4 AU 2005100071 A4 AU2005100071 A4 AU 2005100071A4 AU 2005100071 A AU2005100071 A AU 2005100071A AU 2005100071 A AU2005100071 A AU 2005100071A AU 2005100071 A4 AU2005100071 A4 AU 2005100071A4
- Authority
- AU
- Australia
- Prior art keywords
- tank
- plastics material
- thermosetting plastics
- fibre reinforced
- rings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
Landscapes
- Sewage (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
Jackelen Developments Pty Ltd
AUSTRALIA
Patents Act 1990 INNOVATION PATENT SPECIFICATION Invention Title: A Composite Storage Tank This invention is described in the following statement: 2
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ci A COMPOSITE STORAGE TANK 00 BACKGROUND OF THE INVENTION This invention relates to a composite storage tank.
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The invention relates to a composite water storage tank. It should be appreciated the O tank of the invention is suitable for storing fluids other than water and that the
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invention is described by way of example only in relation to storing water.
Typically, storage tanks may be rotationally moulded from plastics material. Often such tanks are made from a thermoplastic material suitable for being in contact with potable water. In order to ensure that the tank meets structural requirements substantial quantities of suitable plastics material need to be used to afford the necessary rigidity to the tank. The thermoplastic material adapted to be in contact with the water within the tank without affecting water quality. The material itself is not expensive when compared to other plastics. The amount of material required and the processing costs of moulding a thick walled tank from polyolefins combined make it an expensive product. Due to the fact that polyolefin thermoplastics have poor physical properties the wall of an underground tank needs to be very thick in order to take the expected loads. The rotational moulded tanks currently on the market for underground installation all have load limitation imposed that prohibits any vehicles traversing over the site. It would be preferable to use less of this material in the construction of the tank but then the tank would not have the requisite strength.
SUMMARY OF THE INVENTION It is an objection of the invention to provide a composite storage tank which at least minimises the disadvantage mentioned above.
According to one aspect the invention provides a composite storage tank having a body with a plurality of reinforcing rings extending around the body at spaced I* 3
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N locations along the length of the body, end walls at opposed ends of the body and a laminate of fibre reinforced thermosetting plastics material encapsulating the tank and extending over the reinforcing rings.
-l The body and ends of the tank are made from thermoplastics material suitable for contacting potable water. Preferably the thermoplastics material conforms to
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o Australian Standard AS4020.
0 o The reinforcing rings may be received in grooves formed in the body of the tank. The 0 rings may be formed from any suitable material to ensure that the tank has structural integrity to withstand hydrostatic, soil and other external loadings both during and after installation of the tank. The thermosetting plastic which encapsulates the tank provides structural integrity. The rings preferably extend such that they are level or flush with an adjoining outer wall of the body.
The rings may be formed of any suitable material. Preferably, the rings are formed from a thermosetting plastics material and the grooves may be filled with such a material until the thermosetting plastics material which forms there these rings is flush with the adjoining wall of the body.
The end walls of the tank may be any suitable shape. For example, if the tank is square or rectangular in transverse cross sectional shape, the walls may be correspondingly square or rectangular. Where the tank is circular in transverse cross sectional shape, the walls may be circular in shape. Preferably, the walls are semispherical in shape.
The laminate of fibre reinforced thermosetting plastics material can readily be made from a material that does not need to conform to AS4020 since it does not contact the water within the tank. The laminate may be applied in any suitable manner to encapsulate the tank. For example, the laminate may be laid over the tank, sprayed onto the tank, wound onto the tank or moulded over the tank.
The laminate consists of a plurality of layers. The laminate may consist of a first layer O 4
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c,1 of solid fibre reinforced thermosetting plastics material applied over the exterior of the tank. A second layer of fibre reinforced foamed thermosetting plastics material may be applied over the first layer. A third layer of solid fibre reinforced thermosetting 00 plastics material may be applied over the second layer.
The tank may have a manhole access portion. Preferably, the manhole access portion 0
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ois provided by a manhole access chamber. The chamber may be provided by a tubular extension projection from the body. The tank may also have provision for inlet and O outlet pipes.
Cl The body of the tank may be formed as a unitary component. One way of forming the body is by rotational moulding.
BRIEF DESCRIPTION OF THE DRAWINGS A particular preferred embodiment of the invention will now be described by way of example with reference to the drawings in which: Figure 1 is a plan view of a composite storage tank according to an embodiment of the invention; Figure 2 is an elevational view of the tank of figure 1; Figure 3 is an end view of the tank of figure 1; Figure 4 is a perspective view of the tank of figure 1; and Figure 5 is an enlarged detailed view of portion of figure 2.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT The tank 10 of the invention as illustrated in the figures has a body 11 which, in this embodiment is substantially circular in transverse cross sectional shape. In this
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embodiment the end walls 12 and 13 are semi-spherical in shape. A cylindrical tmanhole chamber 15 projects outwardly from the body. The body 11 and end walls 12, 13 may be made of a unitary construction and the manhole chamber may be fitted to the body of the tank.
A plurality of grooves 16 are formed in the body and at spaced locations along its
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Olength. As shown in figure 5, these grooves may be trapezoidal in transverse shape.
O Each of the grooves 19 filled with a foamed thermosetting plastics material to form a 10 reinforcing ring 17 flush with the adjoining outer wall of the body as shown in figure The tank of figures 1 to 4 is shown without its outer laminate of fibre reinforced thermosetting plastics material. Figure 5 shows detail of the laminate employed to encapsulate the tank. The laminate has an inner layer of solid fibre reinforced thermosetting plastics material, an intermediate layer fibre reinforced foamed thermosetting plastics material and an outer layer of solid fibre reinforced thermosetting plastics material.
The laminate is applied over the whole of the exterior of the tank. The tank is afforded structural rigidity by the ribs 17. This rigidity is enhanced by the laminate.
By constructing the tank in this way it is possible to provide a tank that has the requisite rigidity and still has a unitary inner core made from thermoplastic material confirming to AS4020.
Claims (2)
1. A composite storage tank having a body with a plurality of reinforcing rings extending around the body at spaced locations along the length of the body, end OO walls at opposed ends of the body and a laminate of fibre reinforced thermosetting plastics material encapsulating the tank and extending over the rings. 0 S2. The tank of claim 1 wherein the body is substantially circular 0 transverse cross sectional shape and the ends are semi-spherical in shape. 10 3. The tank of claim t or 2 wherein the body and the ends are made of thermoplastics material suitable for contacting potable water.
4. The tank of any one of claims 1 to 3 wherein the rings are made of foamed thermosetting plastics material filling grooves in the body at spaced locations along the body level with an adjoining outer wall of the body. The tank of any one of claims 1 to 4 wherein the laminate consists of an inner layer of solid fibre reinforced thermosetting plastics material, an intermediate layer of fibre reinforced foamed thermosetting plastics material and any outer layer of solid fibre reinforced thermosetting plastics material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2005100071A AU2005100071A4 (en) | 2005-01-28 | 2005-01-28 | A Composite Storage Tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2005100071A AU2005100071A4 (en) | 2005-01-28 | 2005-01-28 | A Composite Storage Tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2005100071A4 true AU2005100071A4 (en) | 2005-03-03 |
Family
ID=34382999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2005100071A Ceased AU2005100071A4 (en) | 2005-01-28 | 2005-01-28 | A Composite Storage Tank |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2005100071A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191812A (en) * | 2010-03-10 | 2011-09-21 | 曾建祥 | Horizontal composite container |
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2005
- 2005-01-28 AU AU2005100071A patent/AU2005100071A4/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191812A (en) * | 2010-03-10 | 2011-09-21 | 曾建祥 | Horizontal composite container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| PC | Assignment registered |
Owner name: NYLEX CORPORATION PTY LTD Free format text: FORMER OWNER WAS: JACKELEN DEVELOPMENTS PTY LTD |
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| PC | Assignment registered |
Owner name: WET TECHNOLOGIES (AUSTRALIA) PTY LTD Free format text: FORMER OWNER WAS: NYLEX CORPORATION PTY LTD |
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| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |