WO2005017270A1

WO2005017270A1 - A well for decentral collection, temporary storage and drainage of water and an end member for such a well

Info

Publication number: WO2005017270A1
Application number: PCT/DK2004/000536
Authority: WO
Inventors: Jørgen Mosbæk JOHANNESSEN
Original assignee: J.M.J. Holding Aps
Priority date: 2003-08-18
Filing date: 2004-08-12
Publication date: 2005-02-24
Also published as: DK175417B1

Abstract

A well (1) for collection, temporary storage and drainage of water, in particular storm water, having a central member (2) and two end members in the form of a top member (3) and a base member (4). At least one of the two end members (3, 4) is cup-shaped and has an edge, which is upper in relation to the cupshape. The upper edge of the at least one end member (3, 4) is formed by a collar (11) having an upper side and a lower side arranged to engage with the central member (2), the outer contour of the side and the base wall (3a, 4a) below the collar fitting into the inner contour of the central member (2). In addition to this, the invention comprises an end member in the form of a base member or a top member (4) for such a well (1).

Description

A well for decentral collection, temporary storage and drainage of water and an end member for such a well The invention relates to a well for decentral collection, temporary storage and drainage of water, in particular storm water, comprising at least one inlet opening and at least one outlet opening; the well comprising at least one central member and two end members in the form of a top member and a base member; and the well having a mounted state and a non-mounted state; the central member in its mounted state being positioned so that its longitudinal axis is primarily vertical; and the central member, the top member, and the base member in the mounted state being mounted so that the central member forms a central section of the well, whereas the top member and base member, respectively, form a top section and a base section, respectively, of the well; at least one of the end members being cup-shaped with a side and a base wall with an outer contour, and having an edge, being upper in relation to the cup-shape. From Danish Patent no. 105 640, the application of larger wells instead of gutter inlets for drainage systems for decentral equalization/delay of storm water outflow to a pipe system is known. Said patent was applied for in 1965, and since then a number of conditions have changed for the benefit of this system. The requirements for the du- rability of the pipe system have increased, which entails an increase in costs, and therefore it is important to be able to reduce the required pipe dimen- sion to a minimum in order to keep costs low. In addition to this, a reduction of the pipe dimensions offers a number of advantages in relation to. the dimensioning of pipe systems. This facilitates fitting, repair and replacement of the pipes, just as the pipes themselves are cheaper. Furthermore, climatic changes have taken place, which have led to increased precipitation, and therefore overloading of the existing pipe systems occurs more often. These factors have led to greater demands for equalization of the discharge, since the capacity of the pipe system has been reduced significantly and is required to be reduced further in proportion to the precipitation. Therefore, today, there is a considerable need for a specific well system, particularly suitable for the decentral equalization/delay of the storm water outflow to a pipe system. In this connection, it is crucial for the applicability of the well that: • the well is cheap and easy to manufacture; • storage and transportation of a single well is cheap and easy; • storage and transportation of more than one well at a time is cheap and easy; • the well is cheap and easy to mount; • replacement of parts in, or repair of, the mounted well is cheap and easy; • provision of differently shaped wells is cheap and easy; and • the well is efficient and dependable. In the construction of wells for the above- mentioned purposes, it is now common to in situ cast a concrete base in the ground at ^' the mounting site, after which the central section and top section of the well are mounted as precast members. From US 5,080,137, providing wells with a top member shaped as an oblique frustum of a cone is known. From WO 98/20209, a well of the type mentioned in the preamble is known, the base member of which being inwardly inclined at two opposite sides to form a trough-like lower groove. The purpose of the present invention is to provide a well fulfilling at least some of the above- mentioned points in a better way than the wells of the art . To achieve this, the well of the invention is characterized in that the upper edge of the at least one end member is formed by a collar having an upper side arranged to engage with the central member and a lower side also arranged to engage with the central member, the outer contour of the side and the base wall fitting below the collar into the inner contour of the central member. Thus, both in the mounted and non-mounted state of the well, a stabile and reliable contact between the individual members is achieved. Because of its precast member construction, the well of the invention is easy to mount, and defective parts are easily replaced in the mounted well. Depending on embodiment, it is also possible to provide central, top and base members which may be combined to form a number of different well types and sizes; this being an ad- vantage during manufacture, transport and mounting. Finally, the well is cheap and easy to manufacture, and it' is as efficient and dependable as any of the wells of the art. In one embodiment of the invention, the vertical extent of the central member exceeds the total vertical extent of the top and base member beyond their respective collars. In addition to this, the at least one end member may be shaped so that they are stackable into each other or into other members of a similar type. For example, if the top and base members are inserted from different sides of the central member, the total spatial extent of the three members will substantially correspond to the spatial extent of the central member itself. Thus, the well of the invention enables space to be saved during transport, such as export transport or transport by lorry to the mounting site, and storage, for example in a depot, since the total spatial extent of the non-mounted well has decreased considerably. Accordingly, during the same transport, more well members may be transported than in the prior art, which is a significant financial advantage. At the same time, the well of the invention facilitates the handling of well mem- bers prior to mounting, for example during the loading of a lorry, since the members in their combined state comprise a smaller number of separate parts and are smaller in their spatial extent. In another embodiment of the invention, fastening means may be provided for fastening the members to each other, which may furthermore ensure a stabile contact between the members before and/or after the mounting of the well . In another aspect of the invention, a base member and a top member for a well are provided. In the following, ^■ the ^• invention will be explained in more detail by way of examples of embodi- ments with reference to the schematic drawing, in which Fig. la and lb show a vertical and a horizontal section, respectively, of a first embodiment of the well of the invention in a mounted state, Fig. 2 shows a vertical section of the Fig. 1 embodiment in a first non-mounted state, and Fig. 3 shows a vertical section of the Fig. 1 embodiment in a second non-mounted state . The embodiment of the well 1 of the invention shown in Fig. la and lb comprises a central member in the form of one or more horizontally sectioned and cylindrical well rings 2, a top member in the form of a top cone 3 and a base member in the form of a base cone 4. The top cone 3 and the base cone 4 are frus- toconical, the cones pointing upward and downward, respectively, in the mounted state of the well 1. In the mounted state of the well 1, the longitudinal axis I of the well ring 2 is substantially vertical. The at least one well ring 2 and the well cones 3, 4 are substantially symmetrical about a vertical cross- section. Uppermost in the top cone 3 , an inlet opening 5 is provided having a grating 6 on a level with the ground surface 6a. The outlet opening 7 is provided in the base cone 3, and, in the embodiment shown, it is provided with a flow regulator in the form of a vortex brake 8 for regulation of the amount of outflow from the well 1. In the outlet opening 7, it is possible to apply a regular drain with or without drain trap. The latter may be used in a large and primarily horizontal parking area, ^' storage area, road system or other situations with a large number of communicating wells 1, in which only the well 1 connected to the main pipe needs to be provided with the vortex brake 8. By drilling the side wall of the well ring 2, the side or base wall 3a of the top cone 3 or the side or base wall 4a of the base cone 4, it is possible to connect one or more lateral drains in arbitrary directions. To the outlet opening 7, any type of drain may be connected such as a radial drain or a drilled drain to a tangent pipe. In front of the vortex brake 8 and substantially vertically, a grating or plate 9 is disposed, which prevents large foreign matters from entering the vortex brake 8. The plate 9 is fastened to the base cone 4 via a horizontal rod enabling it to tilt about a horizontal axis (II) , thus enabling provision of access to the vortex brake 8 from the inside of the well 1. The well 1 may be manufactured of any suitable material such as armoured concrete or plastic or a combination, of those. In the embodiment in Fig. la and lb, the top cone 3 is provided with a brace 10 at the top, which brace may consist of steel, and which improves the mechanical properties of the well 1. In the embodiment of Fig. la and lb, the top cone 3 and the base cone 4 are provided with supporting surfaces in the shape of collars 11 at their lower edges and upper edges, respectively. In the mounted state of the well 1, the collars 11 form^" the contacting faces between the well ring 2 and the top cone 3 and base cone 4, respectively. In Fig. 2, the well 1 of Fig. la and lb is shown in a first non-mounted state enabled by the well 1 of the invention. Here, the top cone 3 is in^'-, serted in the well ring 2 from the top, and the base cone 4 is inserted in the top cone 3. This assembly of the well 1 in the non-mounted state may be advantageous to embodiments in which the well ring 2 is of the same magnitude as, or smaller than, the top member 3 and the base member 4. The well cones 2, 3 and the well ring 4 may of course also be inserted into each other in a different order. The collars 11 function as contacting faces against the well ring 2. In the Fig. 2 embodiment, the well 1 only takes up a little more upward space than the well ring 2 itself,- whereas the well cones 3, 4 and the well ring 2 will each take up up to three times more space in themselves. In the embodiment shown, the height of the non-mounted well 1 thus more or less corresponds to a third of the total mounted constructional height. As further shown in Fig. 2, the grating 6 and other small well parts may be disposed, for example, in the base member 4 , whereby further space may be gained. In Fig. 3, the well 1 of Fig. la and lb is shown in a different non-mounted state than in Fig. 2, the well 1 here being provided with a well ring 2 of about twice the height of the well ring 2 in Fig. 2. The top cone 3 is inserted in the well ring 2 from one end, whereas the base cone 4 is inserted in the well ring 2 from the other end so that the upper side of the top cone 3 and the lower side of the base cone 4 face each other in the inside of the well ring 2. This assembly of the well 1 in the non-mounted state is thus advantageous for embodiments in which the well ring 2 is of the same upwards magnitude as, or larger than, the total, heights of the top . cone 3 and the base cone 4. The well cones 3, 4 and the well ring 2 may of course be inserted in each other in a different order. Here, the collars 11 operate as a contacting face between the members, both between the top cone 3 and the well ring 2 and between the base cone 4 and the well ring 2. The collars 11 counteract the cot- tering into each other of said members 2, 3, 4, and they counteract undesirable tensions in and between these. Also in this assembly of the well 1 in a non- mounted state, covers (not shown), gratings 6, drain regulators 8 and other spare parts for the well 1 may be stored in different ways in the well members 2, 3, 4, for example at the bottom of the base cone 4 or between the top cone 3 and the base cone 4. In all embodiments, it is possible to incorporate some or all of the spare parts mentioned in the well members 2, 3, 4 during manufacture. However, this may limit the possibilities of assembly. The collars or other parts of the well may be provided with a lock system for interlocking a number of non-mounted wells 1 in a non-mounted state, which will be advantageous when transporting more than one well 1. Furthermore, in consideration of further space-saving, the diameter of the well 1, particu- larly of the well ring 2, may be adapted so that two rows of non-mounted wells horizontally fit exactly on the floor of a lorry or the like. Thereby, said diameter may be, e.g., approximately 1300 mm, if they are placed in staggered rows, or approximately 1200 mm, if they are placed in line with each other. When mounting the well 1, the. well cones^' 3, 4 and the well ring 2 may be assembled to the mounted state prior to lowering it into the dredging, or they may be assembled in the ground. For the mounted state, the members 2, 3, 4 may be assembled using any type of fastening means. For example, at the collar 11, they may be provided with bosses 11a, loops or the like, over which a line or the like may be drawn between the bosses 11a of the well cones 3 , 4 in order to form a zigzag pattern all the way around the well 1. The fastening means may also be in the form of screws, bolts or the like. It is convenient for these fastening means to be appli- - cable for keeping the members 2, 3, 4 together, both in the mounted state and in the non-mounted state of the well 1. In this situation, the fastening means operate as the above-mentioned lock system in the non-mounted state of the well 1. The top member 3 , the central member 2 and the base member 4 should not be regarded as being limited to the shown embodiment. They may have different shapes such as fully or partially flat, symmetrical or asymmetrical, conical, domed, hemispherical, circular or non-circular, cylindrical or non-cylindrical. For example, the top member 3 may be substantially flat, the other members 2, 4 being shaped as shown in the figures .

Claims

P A T E N T C L A I M S 1. A well (1) for decentral collection, temporary storage and drainage of water, in particular storm water, comprising at least one inlet opening (5) and at least one outlet opening (7) ; the well (1) comprising at least one central member (2) and two end members in the form of a top member (3) and a base member (4) ; and the well (1) having a mounted state and a non- mounted state; the central member (2) in the mounted state being positioned so that its longitudinal axis

(1) is primarily vertical; and the central member

(2) , the top member (3) and the base member (4) in the mounted state being mounted so that the central member (2) forms a central section of the well (1) , whereas the top member (3) and the base member (4) , respectively, form a top section and a base section, respectively, of the well; at least one of the two end members (3, 4) being cup-shaped with a side and a base wall (3a, 4a) with an outer contour and having an edge, being upper in relation to the cup-shape, c h a r a c t e r i z e d in that the upper edge of at least one of the end members (3, 4) is formed by a collar (11) having an up- per side arranged to engage with the central member (2) and a lower side also arranged to engage with the central member (2) , the outer contour of the side and the base wall (3a, 4a) below the collar fitting into the inner contour of the central member (2) .

2. A well (1) according to claim 1, c h a r a c t e r i z e d in that the vertical extent of the central member (2) exceeds the total vertical extent of the top and base member (3, 4) beyond their respective collars (11) .

3. A well (1) according to claim 1 or 2 , c h a r a c t e r i z e d in that the top member

(3) and/or the base member (4) are shaped so that they are stackable into each other or into other mem- bers of a similar type.

4. A well (1) according to any one of claims 1 to 3, c h a r a c t e r i z e d by fastening means (11a) for fastening the members (2, 3, 4) to each other.

5. An end member in the form of a base member (4) or a top member (3) for a well (1) according to any one of claims 1 to 4 , this end member (3, 4) being cup-shaped with a side and a base wall (3a, 4a) with an outer contour and having an edge, being upper in relation to the cup-shape, c h a r a c t e r i z e d in that the upper edge of • the end member (3, 4) is formed by a collar (11) having an upper side arranged to engage with a central member (2) and a lower side also arranged to engage with the central member (2) , the outer contour of the side and the base wall (3a, 4a) below the collar fitting into the inner contour of the central member (2) .