CS200599B1 - Transversal system of walls of technologic tanks bottom anchored - Google Patents

Description

The invention relates to a statically advantageous set of bottom walls of process tanks, allowing advantageous use of lightweight prefabricated walls for the construction of process tanks.

Technological tanks are designed for liquid and are used in the production process, or they are used as storage, storage, or even shipping, etc. Mostly, the invention will be particularly suitable for mixing, coagulation, sedimentation, neutralization, agglomeration, aeration and similar tanks. These most often longitudinal process tanks are commonly built as monolithic with reinforced concrete fixed walls. The construction of these tanks, even if they are combined in a monoblock, has the disadvantage of considerable laboriousness, considerable material consumption due to the necessary massiveness of the straight walls and such a long construction time. Recently, so-called packaged units made of steel walls have been used in small-scale technological tanks. These units do not allow the selection of optimum shapes and size ratios for various technological processes and for larger tank volumes are absolutely inappropriate or unusable.

These drawbacks are overcome by the invention, which is based on the fact that the transverse system of the walls of the technological tanks anchored in the bottom consists of at least three arched walls, at least one wall of which has the opposite sense of arching than the other walls.

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At least three walls are connected transversely such that two walls of opposite direction of the arch are connected. Preferably, the walls are connected transversely by at least one spider or at least one transverse rod. They can also be connected by a front wall or by at least one transverse partition or a transverse flat rib. They can also be advantageously connected directly in their mutual contact.

The invention brings both advantages in the static solution, leading to saving of material and speeding up the construction, and also technological advantages in the shape combination of transverse profiles of technological tanks. In technological tanks, it is necessary to dimension the walls with one-sided hydrostatic pressure in the event of a tank being drained or its level reduced. The transverse wall assembly of the present invention allows for effective transverse reinforcement of the entire wall assembly, allowing longitudinal tanks to be built side by side with the advantages already mentioned. Walls of opposite direction can be connected eg by different steel bars, tubes or profiled beams, reinforced concrete spacers and plates, rods or rope pulls, but they can also be connected by transverse partition walls, end walls or flat ribs, or two walls of opposite direction vaults connected in their mutual contact. The walls according to the invention can of course also be joined by a combination of the aforementioned types of connection. The direct contact can be made by screwing or welding steel walls, in reinforced concrete the walls can be made monolithically, etc. The double wall according to the invention, ie the wall consisting of two connected walls of opposite direction of vaulting, can have an auxiliary space inside however, the curvature of the wall does not have to extend over its entire height, eg the upper part of the wall, on which only a small hydrostatic pressure is applied, may be planar. The invention makes it possible to create a longitudinal tank assembly on a common, flat bottom of the required number, length and width of the technological spaces, whereby two different technologically expedient cross-sectional profiles of the tanks can be formed. The convex shape is suitable for mixing, aeration and similar tanks, and the convex shape is advantageous due to its increased surface area for sedimentation tanks. In the first case, the transverse profile allows for more efficient circulation and agitation, in the second case more efficient sedimentation, the effect of which depends inter alia on the level of the surface area, which is confirmed by the known knowledge. Importantly, both characteristic processes commonly coexist, e.g. for waste water treatment activation aeration tank and settling tank. Funkei arches in the invention may also incorporate stiffening arched elements on which the wall is mounted, for example from horizontal planar elements. The most suitable application of the invention is for a sheet metal wall system which is suitable for both compressive and tensile stresses. However, it is also possible to advantageously use reinforced concrete for the two walls reinforced by contact in contact and, if necessary, to water or drain the hollow spaces to ensure that the vaulting material is subjected to pressure. The use of reinforced concrete, however, requires the development of prefabricated parts of arched walls. It can also be used for building walls, eg fiberglass and a combination of different materials. The foundation bottom does not always have to be manufactured as a construction monolithic structure, but it can be made of prefabricated elements, for smaller tanks also metal, fiberglass etc. For construction even large technological

200,599 tanks allow the application of the invention to transport wall parts from the manufacturer to the site. The height of the walls of the technological tanks is usually about 4 m, so it will be advantageous to transport the movable wall parts 2 to 3 m wide and their length, i.e. the height in the tanks, can then be for the entire length of the vehicle. The joining of the wall parts is carried out by known technical means, the most advantageous being the simple welding of the steel walls and their protective coatings. However, any other object may be associated with the transverse wall system technology tanks of the invention.

An exemplary embodiment of a tank according to the invention is shown in the drawings, in which Fig. 1 is a cross-section of the process tanks, Fig. 2 is a plan view, Fig. 3 is a longitudinal section, and Figs. wall systems according to the invention.

In Figures 1, 2 and 3 there are three longitudinal tanks side by side, a longitudinal settling tank 11 and two activation tanks 2. The settling tank 1 and the activation tanks 2 have a base 3 made of reinforced concrete. According to the invention, a transverse assembly of four transverse walls 4,5 and an auxiliary partition wall 6 are anchored therein. The transverse walls 4, 5 with opposite sides of arching are made of sheet steel and connected by transverse spacers 7 and a front wall 8 of similar shape; the settling tank 1 has its profile at the bottom 3 provided with leveling concrete 10, which can also contribute to the stability of the wall system. The arched walls are also reinforced here by struts 11. The system according to the invention allows the length of the tank 1, 2 to be selected as required, while maintaining the static strength for the alternate discharge of the tank. At the same time, the statically advantageous arch shape of the transverse walls 4, 5 is also advantageous for creating an optimum profile of the activation tanks 2 and the settling tank 1. The illustrated arrangement of the tanks 1, 2 according to the invention requires that only the base bottom 3 be carried out in place and the parts of the steel cross-walls 5, 5 are anchored, welded and provided with protective coatings; the front wall 8 will be produced anyway. Compared to traditional designs, savings will be made on labor, cost and significantly accelerate their construction.

FIG. 4 is a cross-sectional view of a similar three process tanks 1, 2 suitable for smaller process volumes than the previous example. The steel transverse walls 4, 5 are in the form of a part of the cylindrical surface. The outer transverse walls 4, 5 are stabilized with concrete 10.

In FIG. 5, the technological tanks are formed by anchoring the four transverse walls 4, 5 to the bottom 3. Two transverse walls 4, 5 of the opposite direction of the vault are each connected by rod cross rods 12 and also by three reinforced concrete cross walls 13.

In Figures 6 and 7 the pairs of tanks 1, 2 are in cross-section where the thin-walled reinforced concrete walls 4, 5 are connected in contact 14 in a monolithic design and in Fig. 7 they are also transverse flat ribs 15. In Fig. 6 the transverse The walls 4, 5 are also joined by spacers 7 in the form of plates monolithically connected to the walls 4, 5, and in FIG. 7 the transverse walls 4, 5 are then reinforced by a longitudinal steel beam 16 of the U-profile.

FIG. 8 shows, in cross-section, two-storey process tanks 1, 2 with steel transverse walls 4, 5 for two days 3 above each other. The walls 4, 5 are connected in contact 200 599 to 14 by screwing. The double storey wall 4, 5 connected by a spacer 7 forms a continuous collector 17 for accommodating the various lines.

Depending on the technological process applied in the tanks, it is sometimes necessary to locate mobile bottom sludge wipers. In this case, it is advantageous to use known devices which allow the transverse connection of the tanks and do not require mobile tracks on the walls. The maximum utilization of the invention, however, leads to the creation of a modular system of wall systems even for large technological volumes, including the respective distribution systems and other specific technological and operational (access etc.) elements. During waste water treatment in activation tanks, it is possible, for example, to use the hollow space of double walls to distribute waste water, to return sludge, to distribute compressed air, etc.

Claims (2)

SUBJECT OF THE INVENTION Transverse system of walls of technological tanks anchored in the bottom, of which at least one wall is arched in height, characterized by the fact that it consists of at least three wall-high walls (4, S), of which at least one wall (4) has the opposite a sense of arching than the other walls (5), of which at least two walls (4, 5) of opposite direction of arching are connected transversely of the three walls (4, 5). 2. Transverse wall system according to claim 1, characterized by at least one spacer (7). by that walls (4, 5) are crosswise joints- 3. Transverse wall system according to claim 1, characterized by at least one rod (12). team. that walls (4. 5) are crosswise joints- 4. Transverse wall system according to claim 1, characterized by at least one end wall (8). team. that walls (4, 5) are crosswise joints- 5. Transverse wall system according to claim 1, characterized by at least one partition (13). tlm, that walls (4, 5) are crosswise joints- 6. Transverse wall system according to claim 1, characterized by at least one flat rib (15). team. that walls <4. 5) are crosswise joints- 7. Transverse wall system according to claim 1, characterized by team. that walls (4, 5) are crosswise joints- (14).