DE3400700C1 - Support for a relatively long cylindrical container on another relatively long cylindrical container - Google Patents

Abstract

A support for a relatively long cylindrical container on another relatively long cylindrical container, especially a deaerator on a supply-water container in a power station. The mutually associated brackets (1, 2) of the upper container and of the lower container are connected to one another via plates, plate springs and a prestressing bolt-nut device. In this case, the lower base plate (4) is welded to the lower bracket (2) and is provided with a thread for the bolt (3). The upper base plate (8) is welded to the upper bracket (1) and has a through-opening for the bolt (3). A first prestressed plate-spring stack (5) is arranged between the base plate (4) and the disc (6), and a further prestressed plate-spring stack (11) is arranged between the disc (7) and the nut (9) which is screwed onto the bolt (3) or a disc washer (12). (Figure). <IMAGE>

Description

A further set of disc springs is located above the disc 7 11, which in turn is limited by a washer 12. The plate washer 12 sits centric to bolt 3. In the upper area is the cup washer 12 excepted spherically, with a likewise in this spherical recess spherical insert 13 is used. The already mentioned mother 9 acts against this insert 13, so that in this way a suitable bias can be exercised on the spring assembly 11.

The assembly is carried out as follows: The device is arranged between the connection piece 1 and the connection piece 2. First the bolt 3 screwed into the base plate 4 and then the disc spring assembly 5, the washer 6, the plastic bearing 18 and the base plate 8 tightened with the nut 9 so that the lower plastic layer 6 rests on the base plate 4 (point A). Afterward the device is connected by some assembly irons 10 and through the assembly opening B built into the upper console 1.

After alignment, the base plate 4 with the lower console 2 and the base plate 8 are welded to the upper console 1.

Then after loosening the nut 9, the disc spring assembly 11, the plate washer 12 and the insert 13 are mounted and screwed to the nut 9. Finally, the assembly opening B is closed again.

The lower disc spring assembly 5 is according to the weight of the upper container biased, while the reaction forces caused by the internal pressure are received by the upper plate spring assembly 11, so that the connections experience a relief in the operating state.

Through the larger hole in the base plate 8 are over the discs 6, 7 also lateral shifts possible (point C). The supports remain non-positively connected to the containers in all operating cases.

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Claims (3)

Claims: 1. Support of a relatively long cylindrical Container on another relatively long cylindrical container, in particular of a degasser on a feed water tank in a power plant, which by at least one nozzle connected to one another and the upper container via at least two brackets and washers are attached directly to the lower container, thereby gekennz e i c h n e t that the console (1) of the upper and the console (2) of the lower Container with each other via base plates, disk spring assemblies and a preload bolt nut Device are interconnected, the lower base plate (4) with the Bracket (2) of the lower container is welded and a thread for the bolt (3), the upper base plate (8) with the console (1) of the upper container is welded and has an enlarged passage opening for the bolt (3), between the lower base plate (4) and one of the disks (6) a first prestressed Disk spring assembly (5) and between the lower washer (7) and the one on the bolt (3) screwed nut (9) a washer (12) with a spherical recess for receiving a likewise spherical insert (13) and another prestressed disc spring assembly (11) is arranged. 2. Support according to claim 1, characterized in that to both On the sides of the upper base plate (8) there is a dry store that allows horizontal movements (7, 17, 8, 18, 6) is arranged. 3. Support according to claim 2, characterized in that the dry storage from the two disks (6, 7) two plastic layers (17, 18) and the upper base plate (8) are formed, the discs (6, 7) and the plastic layers (17, 18) through holes for the bolt (3). The invention relates to a support according to the preamble of claim 1. Containers arranged one above the other, without an intermediate stage, i.e. directly stand on top of each other and are connected to one another by at least one connecting piece, are generally mutually supported by several supports. Are these supports are rigidly connected to both containers, so they are not in capable of expansions based on temperature differences and / or weight loads are due to compensate. It is known for such supports that nozzles with compensators are equipped and can only absorb expansion in the vertical direction. These However, the execution of supports can be subject to impermissibly high loads cause the connection points between the nozzle and the cylindrical jacket. this applies above all to containers that have a relatively large overall length such as feed water tanks with a degasser above in power plants exhibit. A generic support for heat exchangers is known (DE-PS 10 90 692), in which several heat exchangers are arranged one above the other, Where- they have a fixed connection of the nozzle at one end and the other at the other Provide movable supports at the end, which are heated with the heat-exchanging medium be that a thermal expansion is generated that the linear expansion of the connecting piece is equivalent to. This is a relatively complex solution, with it remains questionable whether the thermal expansion can be controlled so precisely, that a stress-free support of the one on the other container is achieved. In addition, it must be taken into account that not only temperature influences are controlled, but that disturbing influences from changes in weight, z. B. can occur due to uneven filling of the upper container. The invention specified in claim 1 is based on the object to make the support of containers arranged one above the other so that the stresses in the supports remain within permissible limits and high loads in the area the connection nozzle-cylindrical jackets, which are essentially different Operating temperatures of the container and the variable weight of the container are, do not arise. The internal pressures generate reaction forces that additionally load the nozzles. It should also be taken into account that the container have manufacturing-related irregularities, which is particularly noticeable makes when the ratio of wall thickness to container diameter is relatively small, e.g. B. <0.005. In principle, the point is that the nozzle has a compensating part linked together that can move both vertically and horizontally can record without the frictional connection is interrupted. The solution offers supports that are already in place during assembly be set so that they have a positive connection in all operating cases ensure the container and in this way the stresses in the nozzle reduce to an acceptable level. An embodiment of the invention is described below with reference to FIG Drawing explained. The single figure shows a sectional view through the connection of two supports, which in turn are attached to containers, not shown. In the figure, the console of the lower container is numbered 2, the console of the upper container denoted by 1, these being those consoles which are located on the containers arranged one above the other. On the lower Console rests a lower base plate 4, which has a threaded hole in its center having. In this threaded hole a bolt 3 is screwed, which in the vertical Direction protrudes upwards and a nut 9 carries at its upper end. On the base plate 4 rests a plate spring assembly 5, which upwards is limited by a disk 6. The disc is arranged centrally to the bolt 3 and has on her a plastic layer 18 on the upper surface. The upper base plate 8 rests on this plastic layer, which in turn is firmly welded to the console 1. A second disk is located above the upper base plate 8 7, which is also formed with a plastic layer 17.