Pressure pipeline for hydroelectric power plants

The invention refers to a pressure pipeline fllt Waserkraftanlagen. Such lines are as straight-lined as possible geftihrt from the water intake to the machine building. Where this is not possible, so-called fixed points are planned, in which the direction is changed and which are taken up by the Rlchtttugsänderung arising Krete to strong Ftmdamentcn. The pressure pipeline forms so far thus a straight-line Polygono its corner points the fixed points darstelien, therefore is gekrummte Leltungsabschnitte well-known, these lies however as so-called Festpunktskrtt, more mmer only in the Festpunktsberelch.Bei for strongly proflliertem area results from it a large number such fixed points and it is understandable that the straight fixed points the line raise the price of and the building complicate, even if it already admits is to form the Festptmkte not by the tibllchen BetonblOekeo separates by Pfahhr ankemngen whereby the Festpunktskrtlmmer is from Ringen.ttmschlossen, which are fastened dd¢n stay blocks on. Special difficulties arise however if the necessity for the Anordmmg of a fixed point results to steep ones, where the Baugrtmd does not exhibit the necessary stretcher ability for the admission in the fixed point to tlbertragenden forces. In such trap are complicated and expensive! 5 Fundiertmgen necessarily. The invention aims at the removal of these lack and the creation of a pressure pipeline, with which it is possible to lower the number of the fixed points substantially and/or to move the necessary fixed points aa steep one with sufficient load-carrying building ground. The invention consists of that wenigstem a line section is designed as a sheet curved fixedscored vertically between two, which exhibits supporting supports between the fixed points. By this training it is possible to adapt on the one hand the route better to the area to derive on the other hand a substantial part of those Krete, which are gefllhrt directly otherwise at the individual Auflageru into the ground, for quite use of the Bogenwirktmg of the water gauge which is at pressure into the two final fixed points and to relieve thus the entire line range between the fixed points. Of course the Kräftevertellung does not arise via Bogenwlrkung only with appropriate internal pressure in the line, while during the Fttllvorgang the Krafte resulting in from Eigenund water weight takes up themselves to Ubllcker way by the supporting supports kurzfrhttg tired, it must to it is paid attention, to smell during large internal pressure load taking the Rohrlelumg off from the camps effected bzw.dal is avoided that the water gauge the stuffing boxes standing under dirt ameinanderzleht. It will thus recommend lch the training according to invention mainly if under Bertleksichtigtmg of downward gradient and pipe diameter too high Innendrtlcke does not arise. Except with bad 13augrund the execution according to invention is more favourable also with load-carrying ground than the past Komtruktlon, because it permits to lower the number of the fixed points noticeably. Besides the hydraulic characteristics of the piping are improved, if to steep ones a continuous Krämmung of the line is given to a number of sharp Rlchtungsänderungen. To the sheet usually by an inserted Stopfbtlchseod, dgl, Expansionsmögllchkeit is given, in the case of use such stuffing boxes arises of an execution tlblicher under Watmedehntmgen in the bent pipe Zwiingungsstmnnungen, these is however in the comparison of mit'der Blegespannnng in tubes infinitesimal small. The design shows a part of a trained pressure pipeline according to invention scherentisch in the vertical cut. - 2 - Nr.22! The water intake is characteristic 445 with I, from which the pressure pipeline 2 leads downward to (not represented) the machine building. The eiste section of the pressure pipeline is trained between the fixed points 3 and 4 as vertically been correct sheet 5, which exhibits 3, 4 only light supporting supports 6 between the two fixed points. The section 5 can be with a Expansioasmöglichkeit, appropriately with a Stopfbttchse “/ausgestattet. The load of the Stutzauflager 6 from Eigenund water weight of the line decreases with rising Innendmck.