RU220003U1 - Caisson for a well - Google Patents

Abstract

The utility model relates to the design of the caisson, which is used in the water supply systems of country houses as wellhead isolation from the possible ingress of groundwater or sewage into it in winter and is installed in the ground on a casing pipe, provides an increase in the strength of the caisson due to the fact that the landing shelf is made in the form of a truncated cone inclined at an angle to the body wall, and also due to the connection of this landing shelf with the neck and with the body using welds, while the element to which the welded element is welded has a section protruding beyond the seam around the perimeter, which is an additional stiffener for the caisson, i.e. welded joints between the neck and the landing shelf, the landing shelf and the walls of the hull give additional rigidity to the caisson structure. The landing shelf in the form of a truncated cone bears a reduced, compared with analogue, load per unit surface of the landing shelf, which makes it possible to exclude the installation of additional stiffeners between the landing shelf and the neck. The internal space of the caisson has a larger volume compared to the analogue due to the shape of the landing shelf in the form of a truncated cone, displaced to one of the sides of the body and inclined towards the wall.

Description

The utility model relates to the design of the caisson, which is used in water supply systems of country houses as wellhead isolation from possible ingress of groundwater or sewage into it in winter and is installed in the ground on a casing pipe. The caisson is used to protect the well from freezing during the cold season, as well as from the ingress of ground and flood waters and is designed to place water supply equipment in it, which ensures the supply and distribution of water from a well or a water supply well and allows you to place pumping or other equipment underground and provide his safety.

The task facing the developers of the caisson design is to increase the reliability (strength) of the caisson and increase the convenience of working in it.

From the prior art known caissons for the well "Alta Kesson", made in the form of plastic containers (see the passport for the caisson "Alta Kesson" http://kessons.ru/files/passport.pdf. January 2016), having a cylindrical body , along the perimeter of which plastic reinforcing elements are placed on the inside, for example, stiffening ribs in the form of rings connected to the housing wall.

Also known is the caisson described in the utility model patent (see Patent CN 201873211 U, 06/22/2011 "REINFORCED STRUCTURE FOR TANK EQUIPMENT"). The utility model relates to a reinforced structure for tank equipment, which is characterized in that this structure contains at least one reinforcing ring located annularly along the wall of the tank body, and the support element is located in the radial direction of the reinforcing ring.

The closest to the claimed caisson is the caisson presented on the website https://septiceco.ru/kessoni_bio_c.

Its design is made in the form of an outer skirt, in the upper part of which there is a landing shelf with a neck mounted on it, shifted to the wall of the skirt (according to another terminology - a landing shelf), and below there is a massive bottom. Inside both the outer skirt and the neck there are stiffening rings, and on the outside a support element is welded to the neck, which increases the rigidity of the neck. Inside the outer skirt between the outer skirt and the neck, a ladder can be installed, the size of which determines the distance between the skirt and the neck.

The disadvantage of this design is the presence of additional structural elements installed to increase the rigidity of the neck, as well as not a sufficiently large internal volume of the caisson.

At the same time, for the rigidity of the design of the caisson under pressure, a reliable connection between the neck and the landing shelf is required. What is not described in the information materials on the above site.

The technical result from the use of the proposed solution is to increase the strength of the caisson due to the fact that the landing shelf is made in the form of a truncated cone inclined at an angle to the body wall and due to the connection of this landing shelf with the neck and with the body using welds, while the element, to which the welded element is welded, has a section protruding beyond the seam along the perimeter, which is an additional stiffening rib for the caisson, i.e. additional strengthening of the rigidity of the landing shelf is carried out by welded joints between the neck and the landing shelf, the landing shelf and the walls of the body.

As a result of choosing the shape of the landing shelf in the form of a truncated cone, the load per unit surface of the landing shelf is reduced. At the same time, the shelf bends less under the weight of the soil, which does not require the installation of additional stiffeners, as is done in similar products.

Also, the volume of the caisson, increased by changing the shape of the landing shelf, increases the convenience of working inside the caisson, and the internal space of the caisson determines the neck of the caisson, shifted to one of the sides of the hull, while the inclination of the axis of the landing shelf to the axis of the tilted hull is chosen so that the most ergonomic use of space, taking into account the placement of equipment inside it.

On FIG. 1 shows the image of the caisson - 3/4 side view.

On FIG. 2 - image of the caisson - front view.

On FIG. 3 - image of the caisson - top view.

On FIG. 4 - welded connection between the landing shelf and the neck.

On FIG. 5 - welded connection between the landing shelf and the body.

On FIG. 6 - welded connection between the neck and landing shelf.

On FIG. 7 - welded connection between the hull and landing shelf.

Where 1 is the neck; 2 - landing shelf; 3 - body; 4 - hook; 5 - bottom; 6 - vertical axis passing inside the neck; 7 - axis passing inside the landing shelf; 8 - welded seam; 9 - a section protruding beyond the seam, which is an additional stiffener for the caisson, 10 - a reinforcing ring, 11 - hooks.

DESIGN DESCRIPTION

The inventive caisson is made of plastic, for example, polyethylene or polypropylene and includes (see Fig. 1, Fig. 2) a neck 1, which can be covered with a lid, a landing shelf 2, a hollow body 3 and a bottom 4 placed in the above okay. The body 3 and the neck 1 are in the form of hollow cylinders, while reinforcing rings 10 can be made on their walls (internal or external).

The neck 1, connected to the landing shelf 2, is shifted in one direction to the wall of the housing 3.

The landing shelf of the caisson 2 is made in the form of a truncated cone with an axis 7 inclined towards the side of the body wall 3, to which the neck 1 is displaced (see Fig. 3), the axis 6 of which passes inside the body.

The neck 1 and the body 3 have welded joints with the landing shelf, due to which a strip of plastic remains under or above the seam, which is an additional stiffener 9, and the diameter of the welded structural element of the caisson is smaller than the diameter of the element to which it is welded.

The connection between the neck of the caisson and the landing shelf (weld 8) can be made by welding the neck to the landing shelf and vice versa (see Fig. 4 and Fig. 6).

The connection between the body of the caisson and the landing shelf (weld 8) can be made by welding the landing shelf to the body and vice versa - the body to the landing shelf (see Fig. 5 and Fig. 7).

Hooks 11 can be made on the side surface of the body.

Execution examples

1. Caisson made of polypropylene 6 mm thick. The neck, which can be covered with a lid, is 300 mm high. A landing shelf is made between the neck and the hollow body, the axis of which is inclined to the body axis by 20 degrees. The size of the caisson: the height from the neck to the bottom - 2020 mm, the outer diameter of the neck - 708 mm, the body diameter - 990 mm. The connection between the neck of the caisson and the landing shelf is made as a result of welding the landing shelf to the neck and the body. Welded seams are made between the landing shelf and the neck, the landing shelf and the body. Between the seam and the lower edge of the neck, the seam and the upper edge of the body, a plastic strip 16 ± 2 mm wide protrudes.

2. The caisson is made of 8 mm thick polyethylene. The neck, which can be covered with a lid, is 500 mm high. A landing shelf is made between the neck and the hollow body, the axis of which is inclined to the body axis by 25 degrees. The size of the caisson: the height from the neck to the bottom - 2640 mm, the outer diameter of the neck - 746 mm, the body diameter - 1220 mm. The connection between the neck of the caisson and the landing ledge is made by welding the neck and body to the landing ledge. Welded seams are made between the landing shelf and the neck, the landing shelf and the body. Between the seam and the lower edge of the neck, the seam and the upper edge of the body, a plastic strip 20 ± 2 mm wide protrudes.

Claims (10)

1. A caisson for a well, made of plastic, including a neck, a landing shelf, a hollow body and a bottom connected in the indicated order, where the body and the neck are in the form of hollow cylinders, while the neck connected to the landing shelf is offset to the wall of the body, differing the fact that the landing shelf of the caisson is made in the form of a truncated cone, while the axis of the landing shelf is inclined to the axis of the hull at an angle; the body and neck have welded joints with the landing shelf, while the diameter of the welded structural element of the caisson is smaller than the diameter of the element to which it is welded, due to which a plastic strip is left under the seam, which is a stiffening rib. 2. The caisson according to claim 1, characterized in that it is made of polypropylene. 3. The caisson according to claim 1, characterized in that it is made of polyethylene. 4. The caisson according to claim 1, characterized in that at least one reinforcing ring is made on the inner walls of the housing. 5. The caisson according to claim 1, characterized in that the connection between the neck of the caisson and the landing shelf is made by welding the landing shelf to the neck. 6. The caisson according to claim 1, characterized in that the connection between the neck of the caisson and the landing shelf is made by welding the neck to the landing shelf. 7. The caisson according to claim 1, characterized in that the connection between the neck of the caisson and the landing shelf is made by welding the landing shelf to the body. 8. The caisson according to claim 1, characterized in that the connection between the neck of the caisson and the landing shelf is made by welding the body to the landing shelf. 9. The caisson according to claim 1, characterized in that hooks are made on the side surface of the body. 10. The caisson according to claim 1, characterized in that reinforcing rings are made on the walls of the neck and/or body, internal and/or external surfaces.