STORAGE CONTAINER FOR HOT CONSUMPTION WATER

Abstract: A storage container for hot consumption water. In such containers corrosion will occur which necessitates replacement. According to the invention special materials (1, 2) are recommended for such containers and a special type of supporting structure (3) which can be used in connection with the materials.

Description: STORAGE CONTAINER FOR HOT CONSUMPTION WATER The invention relates to a storage container for hot consumption water which container is of a circular- cylindrical shape with more or less flat end plates. Such containers have up to now been made primarily of metal plates which as known have the unfortunate charac¬ teristic that they are exposed to galvanic corrosion and other corrosion. Therefore, such containers must be regu¬ larly replaced. In order to avoid this the container may be lined with a corrosion resistant material. However, this is a complicated and costly procedure. The invention sets out to provide a container where these disadvantages are overcome. This object is attained by constructing the cylindrical part of a solid, electrically non-conductive material, using the same material for the end plates, and by supporting the end plates on the outer side by means of reinforcing elements, for example made of iron, and by designing the parts attaching the end plates to the cylindrical part in such manner that they connect the cylindrical part to the reinforcing elements. By making the cylindrical part of solid, electrically non-conductive material it is possible to avoid a costly lining of the container with such a material. Admittedly, the inside of the plates must consist of such a material, but as these plates are flat it will not mean any conside¬ rable increase in costs. By supporting the cylindrical part along its two edges by means of reinforcing elements and connecting parts, it is possible to obtain a suitable distribution of stress in the cylindrical part, as this will primarily consist in a circular stress caused by the internal pressure in the container. It has thus been possible to construct a container according to the invention with a reasonably low thickness of plate at the same time as observing the official safety requirements. The container may, however, be characteristic in that the reinforcing elements are made of circular iron plate which may be reinforced by means of ribs on the outside. This provides for a very simple and inexpensive construc- /,, W tion . A preferred embodiment of the invention is characteristic in that the electrically non-conductive material is as- bestos cement. When the reinforcing elements at each end consist of a circular iron plate, the container may, finally, be cha¬ racteristic in that the inlet and outlet are fitted to the end plates through holes in the iron plates, primarily by means of corrosion-proof fittings. In this way the risk of galvanic corrosion may be further reduced at the same time as it is ensured that the container will be water¬ tight. The invention will be further described in the following with reference to the accompanying drawings where fig. 1 shows part of a section through one end of a container according to the first embodiment of the invention, fig. 2 the same in a second embodiment of the inven¬ tion, fig. 3 the same in a third embodiment of the inven¬ tion, fig. 4 a section in part of the end of a container according to the embodiment in fig. 1 or 2, in which there is a pipe fitting, and fig. 5 one embodiment of the container according to the invention, seen from the end on a reduced scale. Pig. 1 shows a cylindrical body 1 of asbestos cement, an end plate 2, also made of asbestos cement, a circular iro plate 3 , reinforced by means of U-irons welded on to it. The end plate 2 is fixed to the circular end opening of 5 the cylindrical body by means of threaded pins 5, which are screwed and possibly glued to the bottom holes along the edge of the cylindrical body 1, and the nuts 6. The joint is sealed by means of a gasket 7, which may for example consist of neoprene. 10 Pig. 2 shows the container in a second embodiment of the invention in which the joint between the cylindrival body 101 and the end plate 102 is made in another manner. In¬ stead of a flat gasket, a gasket ring 107 is used which 15 is placed in an inside recess in the cylindrical body 101. In a third embodiment shown in fig. 3, the end plate 202 is reinforced and supported by a heavier solid, circular iron plate, which is not, however braced. The gasket ring 20 107 is in this embodiment placed in a groove 9 in the end plate 202. Pig. 4 shows part of an end plate 302 and the outside part of a circular iron plate 3 - These parts are provided with 25 concentric holes 30 and 304, and concentrically herewith a cylinder-shaped reinforcement 305 is welded on to the circular iron plate 3. In the hole 303 is screwed a pipe 307 with a thread 306, consisting of stainless steel, more over, the pipe can be glued to the end plate 302. The pipe 30 307 is, moreover, fixed in position by two nuts 308 and 309. Furthermore, the pipe 307 is connected at the inside, by welding, to an inside heating coil 310 of a non-corro¬ sive material, of which only a part is shown. The pipe 307 is connected at the outside to a pipe which is not 35 shown. _OM Pig. 5 shows one end of a container with a circular iron plate 403 fixed by screws 404 to the cylindrical part of the container, as described in fig. 1-3, however, only one screw is shown on the drawing. The circular iron plate 403 is provided with holes 405-410 for the connection of pipes, as shown. These connections are placed in the end plates which consist of the solid, electrically non-conduc¬ tive material, but the position of the holes 405-410 does not constitute part of this invention. The circular iron plate 403 is reinforced with U-irons 4ll-4l8 that are welded on to the circular plate. EXAMPLE A cylindrical container according to the invention may be ' constructed according to one of the embodiments shown in the drawings and have the following dimensions: Inside diameter = 500 mm Outside diameter = 5^3 Inside length = 765 Outside length = 810 Thickness of end plates = 20 Thickness of the cylindrical part = 31 3 5 - The end plates are fixed by means of 24 pieces of 10 mm set screws placed in equidistant positions along the circumference. The reinforcing elements consist of circular plates . 5 mm thick that .are each reinforced by means of ribs in the shape of two set of U-irons 40 x 30 x 3 mm that run at right angles to each other, welded on to the circular plates and placed as shown in fig. 5. The cylindrical part and the end plates are made of asbestos cement which is sold under the trade mark ETERNIT, pressure pipes, type 55 from Dansk Eternit- Pabrik A/S, 9000, Aalborg, Denmark.

Claims: C L A I M S 1. Storage container for hot consumption water of a circular-cylindrical shape with more or less flat end plates, c h a r a c t e r i z e d i n that the cylin¬ drical part (1) consists of a solid, electrically non- conductive material, that the end plates (2) consist of the same material, that the end plates (2) are supported at the outside by reinforcing elements (3) for example made of iron, and in that the parts (5, 6), fitting the end plates (2) to. the cylindrical part (1), are so de- signed that they connect the cylindrical part (1) to the reinforcing elements (3). 2. Container according to claim 1, c h a r a c t a r i - z e d i n that the reinforcing elements (3) at each en consist of a circular iron plate which may be reinforced by outside ribs (4). 3. Container according to claim 1 or 2, c h a r a c t a r i z e d i n that the electrically non-conductive material is asbestos cement. 4. Container according to claim 2 or 3 . c h a r a c t a r i z e d i n that the inlet and outlet are fitted to the end plates through holes in the iron plates, primaril by means of corrosionproof fittings. OM IP

Inventors: VOHNSEN V
Applicants: VOHNSEN V
Application year: 1978
Main classification: F24H9
IPC codes: B65D90, F24H1