WO2002059530A1 - Collet de butee pour bouchons dans des reservoirs en materiau composite - Google Patents

Collet de butee pour bouchons dans des reservoirs en materiau composite Download PDF

Info

Publication number
WO2002059530A1
WO2002059530A1 PCT/IB2002/000197 IB0200197W WO02059530A1 WO 2002059530 A1 WO2002059530 A1 WO 2002059530A1 IB 0200197 W IB0200197 W IB 0200197W WO 02059530 A1 WO02059530 A1 WO 02059530A1
Authority
WO
WIPO (PCT)
Prior art keywords
tank
strengthening
collar
jacket
strengthening collar
Prior art date
Application number
PCT/IB2002/000197
Other languages
English (en)
Inventor
Ruggero Marchetti
Original Assignee
Merloni Termosanitari S.P.A.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Merloni Termosanitari S.P.A. filed Critical Merloni Termosanitari S.P.A.
Publication of WO2002059530A1 publication Critical patent/WO2002059530A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/181—Construction of the tank

Definitions

  • the present invention describes the means and the methods for simplifying the production process necessary for manufacturing the stop collar for plugs or closing plates for access holes at the openings of composite material pressure tanks made of a case in synthetic material strengthened through highly resistant winding fibres.
  • the realisation technology of these tanks is well known: a blow-moulded or roto-moulded synthetic jacket, not necessarily provided with particular mechanical characteristics but resistant to etching and/or corrosion and/or used for food, is strengthened by winding a highly- resistant fibre, glass fibre in particular; the process is called "filament winding"; in general, the fibre is impregnated with special resins in order to obtain a compact structure with high mechanical characteristics.
  • the closing must be a flange-type closing, especially in case of water heaters.
  • This allows to use the same type of standard flanged plates that support the electric resistances and the thermostats used in water heaters provided with traditional metal tanks.
  • the construction technologies of the composite material tanks are not fit for making flanged collars, which are therefore obtained, at the state of the art, with inserts applied arduously before starting the winding of the filament.
  • the object of the present invention, for composite material pressure tanks is to simplify the production process necessary to make, at the opening of the said tanks, the stop collar for plugs or closing plates for access holes.
  • the object of the present invention for tank water heaters using the above- mentioned tanks, consists of simplifying the production process necessary to make flanged collars able to receive standard closing plates for metallic tank water heaters.
  • fig. 1 shows a cutaway view of the lower part of an electric tank water heater, specifically the opening of a composite material tank provided with a strengthening collar and closed with a standard flanged plate
  • fig. 2 shows a cutaway of the three views of a strengthening collar before mounting it on a composite material tank
  • fig. 3 is an enlarged detail of fig. 1 fig.
  • FIG. 2 shows a strengthening collar 1 provided with a countersunk base 1.1 ending with the edge 1.2; it is also provided with a first groove 1.3 with circumferential scores 1.4, a second groove 1.5, a flange 1.6, steel bolts 1J and lightning holes 1.8.
  • the collar 1 is obtained through injection moulding of a thermoplastic or thermosetting material or also of a metallic alloy, and the steel bolts 1J are incorporated in it in a permanent way as inserts during the moulding.
  • a special reference to fig. 1 and 3 of a composite material tank 12 they show a jacket 2 of suitable thermoplastic material, provided with a housing 2.1 for the countersunk base 1.1 of the collar 1 and wrapped with the strengthening layer 3 consisting of special impregnated fibres; even though the figures do not show the entire tank 12, it is obvious that the strengthening layer 3 wraps the jacket 2 completely, in that it has, in every area, the most suitable thickness according to the techniques of the known art.
  • the tank is hermetically sealed by means of a flanged plate 5 and a gasket 4 overlapped on the gasket between jacket 2 and collar 1.
  • a water inlet tube 13, a thermostat sheath 14 and an armoured electric resistance 15 are marked in fig. 1.
  • Fig. 4 shows the extrusion mouth 6 from which comes out the plastic state tube 7 that shall form the jacket 2; it also shows the collar 1, supported by the insert holder 8; the collar 1 is shown already inserted inside the extruded tube 7 since it must form an insert of the jacket 2.
  • fig. 5 shows the same elements of the previous figure, with the valves 9 closed, the jacket 2 formed due to the pressurised air let in through the nozzle 11 and the collar 1 inserted definitively at the lower end of the jacket 2.
  • the cooling of the jacket 2 following the moulding process causes the tightening around the collar 1. This causes, according to known techniques that do not need to be shown, the winding of the impregnated fibres around the jacket 2 in order to obtain the strengthening layer 3, which will be thicker at the collar 1 and will fill the grooves 1.3 and 1.5 completely.
  • the glass fibre impregnated with polyester, with ortho-ophtalic resin or with epoxy resin is particularly suitable.
  • the materials to be used for the jacket 2 and the collar 1 they obviously depend on the functions to be carried out by the tank and it is appropriate for them, even if not necessary, to be chemically similar or compatible, or made compatible by means of appropriate additives or monomers inserted in the polymeric chains, according to known techniques; i.e. materials able to adhere or weld together in the plastic state in order to obtain a perfect tightness.
  • the preferred material is polypropylene for the jacket 2 and glass fibre charged polypropylene for the collar 1.
  • the said elements jacket 2 and collar 1 are manufactured, as said, in similar or compatible materials or materials made compatible, it might be useful for the collar 1, before being inserted inside the tube 7, to be properly preheated at a temperature ensuring a better adhesion or welding to the jacket 2 during the formation process of the latter. Moreover, by using the said materials, after completing the composite material tank 12, it is also possible to hot weld, with a special equipment realisable by any field technician, the edge 1.2 of the jacket 2 at the housing 2.1.
  • the closing means consist of the flange 1.6, the flanged plate 5, the steel bolts 1.7 and the gasket 4 providing that said gasket 4, as shown in the figures, stretches over and covers the point of connection between collar 1 and jacket 2 and, if necessary, is housed in a special seat that keeps it in position.
  • the collar 1 can be obtained in any material having proper mechanical characteristics, for example in die-casting aluminium alloy or the material can be chosen without any compatibility constraint with the thermoplastic material with which the jacket 2 is made.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Plates (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

L'invention concerne des réservoirs en matériau composite (12) destinés à contenir des liquides sous pression, notamment des chauffe-réservoirs d'eau, dans lesquels le collet de renforcement (1) placé sur une ouverture est constitué d'une pièce rapportée dans la gaine (2) obtenue par moulage par soufflage puis enveloppée avec la couche de renforcement (3). L'étanchéité peut être assurée simplement par un joint (4); l'indissolubilité et l'étanchéité de l'ensemble peuvent être améliorées par l'aménagement d'une base fraisée (1.1) et/ou d'une ou plusieurs rainures (1.3, 1.5) et/ou d'une ou plusieurs séries d'incisions circonférencielles (1.4). En outre, selon le matériau utilisé, le collet de renforcement (1) et la gaine (2) peuvent être soudés ensemble. Cette invention est particulièrement utile pour obtenir, dans des réservoirs en matériau composite (12), des moyens de fermeture présentant des formes complexes, particulièrement bridées (1.6).
PCT/IB2002/000197 2001-01-26 2002-01-23 Collet de butee pour bouchons dans des reservoirs en materiau composite WO2002059530A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001AN000004A ITAN20010004A1 (it) 2001-01-26 2001-01-26 Collare di fissaggio di tappi in serbatoi di materiale composito
EPAN2001A000004 2001-01-26

Publications (1)

Publication Number Publication Date
WO2002059530A1 true WO2002059530A1 (fr) 2002-08-01

Family

ID=11437275

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2002/000197 WO2002059530A1 (fr) 2001-01-26 2002-01-23 Collet de butee pour bouchons dans des reservoirs en materiau composite

Country Status (2)

Country Link
IT (1) ITAN20010004A1 (fr)
WO (1) WO2002059530A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITAN20090004A1 (it) * 2009-02-06 2010-08-07 Merloni Termosanitari Spa Scaldaacqua flat di nuova concezione

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2747024B1 (de) * 1977-10-19 1979-02-22 Bosch Siemens Hausgeraete Fluessigkeitsbehaelter fuer einen Heisswasserbereiter
EP0565782A1 (fr) * 1992-04-15 1993-10-20 FILIBERTI S.p.A. Réservoir elliptique pour eau chaude dans des installations domestiques

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2747024B1 (de) * 1977-10-19 1979-02-22 Bosch Siemens Hausgeraete Fluessigkeitsbehaelter fuer einen Heisswasserbereiter
EP0565782A1 (fr) * 1992-04-15 1993-10-20 FILIBERTI S.p.A. Réservoir elliptique pour eau chaude dans des installations domestiques

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITAN20090004A1 (it) * 2009-02-06 2010-08-07 Merloni Termosanitari Spa Scaldaacqua flat di nuova concezione

Also Published As

Publication number Publication date
ITAN20010004A0 (it) 2001-01-26
ITAN20010004A1 (it) 2002-07-26

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