PL97446B1 - METHOD OF FIXING A PIPE IN A SIEVE WALL - Google Patents

METHOD OF FIXING A PIPE IN A SIEVE WALL Download PDF

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Publication number
PL97446B1
PL97446B1 PL17838575A PL17838575A PL97446B1 PL 97446 B1 PL97446 B1 PL 97446B1 PL 17838575 A PL17838575 A PL 17838575A PL 17838575 A PL17838575 A PL 17838575A PL 97446 B1 PL97446 B1 PL 97446B1
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PL
Poland
Prior art keywords
pipe
tube
conical
explosive
fixing
Prior art date
Application number
PL17838575A
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Polish (pl)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to PL17838575A priority Critical patent/PL97446B1/en
Publication of PL97446B1 publication Critical patent/PL97446B1/en

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Description

Przedmiotem wynalazku jest sposób mocowania rury w scianie sitowej, zwlaszcza rury gruboscien- nej.W znanych rozwiazaniach scian sitowych, rury mocowane sa w otworach metoda walcowania lub roztlaczania wybuchowego (patent szwajcarski 454194) z zastosowaniem jednego lub dwóch la¬ dunków wybuchowych. Zastosowanie dwóch la-^ dunków wybuchowych (patent niemiecki 1949573) pozwala uzyskac bardziej szczelne polaczenie, chroniace przed korozja szczelinowa.W innych znanych sposobach zgrzewania wybu¬ chowego rur cienkich ze scianami sitowymi, sto¬ suje sie czesto w celu osiagniecia najwlasciwszych parametrów procesu zgrzewania, uklad stozkowy, to znaczy uklad ze stozkowym otworem lub tez ze stozkowa koncówka rury, przy czym stozek na koncówce rury uformowany moze byc po stronie wewnetrznej, zewnetrznej lub obustronnie.Detonacja ladunku w znanych rozwiazaniach z ukladem stozkowym odbywa sie zawsze w kierun¬ ku osi rury o zwrocie od wnetrza rury do jej wy¬ lotu.Uklad ze stozkowym otworem w scianie sito¬ wej, zwlaszcza o gestej perforacji, dla rur grubo- sciennych przy gD 3 mm jest praktycznie nie¬ mozliwy do zrealizowania. Natomiast uklad ze stozkowa koncówka rury moze byc stosowany, ale tylko w przypaSku scian sitowych, dla których \J 20, poniewaz w przeciwnym razie nastapic S0 moze uszkodzenie rury poza sciana sitowa (ip — stosunek grubosci sciany sitowej g do grubosci sciany rury g0).Sposób mocowania rury w scianie sitowej we¬ dlug wynalazku polega na tym, ze detonacja ma¬ terialu wybuchowego ma kierunek osi rury o zwrocie od wylotu rury do jej wnetrza, w kierun¬ ku narastania grubosci stozkowej koncówki rury.Katy a i fi okreslajace pochylenie tworzacych stozkowej koncówki rury wzgledem jej osi oraz kat y okreslajacy tworzaca stozkowej czesci ma¬ terialu wybuchowego w ladunku moga miec rózne wartosci w zaleznosci od grubosci sciany rury, grubosci sciany sitowej, predkosci detonacji zasto¬ sowanego w procesie technologicznym materialu wybuchowego. Katy a i /? moga przyjmowac war¬ tosci od 0 do 30°, zas kat y od —35° do +35° przy zalozeniu, ze dla y = 0 material wybuchowy po¬ siada ksztalt cylindryczny.Celowym jest, azeby koncówka rury wystawala poza sciane sitowa co zabezpiecza uklad przed do¬ stosowaniem sie produktów detonacji do szczeliny pomiedzy rura a sciana sitowa. Wystajacy frag¬ ment koncówki stozkowej rury odcinany jest pod¬ czas procesu zgrzewania wybuchowego.Rozwiazanie wedlug wynalazku objasnione jest blizej w przykladzie wykonania na rysunku który przedstawia wzajemne rozmieszczenie ladunku w rurze i rury w otworze sciany sitowej.W otworze sciany sitowej 1 umieszczona jest 97 44697 446 3 rura 2 z koncówka stozkowa obustronna o katach nachylenia tworzacej a = 6° d /5 = 8°. W rurze 2 umieszczony jest ladunek wybuchowy skladajacy sie z obudowy 3, w której miesci sie material wy¬ buchowy 4 uksztaltowany na czesci wysokosci la¬ dunku w stozek o kacie y=—4° pomiedzy tworzaca i osia ladunku oraz zapalnik 5. Proces detonacji materialu wybuchowego rozpoczyna sie poza scia¬ na sitowa i przemieszcza sie w glab rury.Sposób mocowania rury w scianie sitowej we¬ dlug wynalazku stwarza mozliwosc zgrzewania me¬ toda wybuchowa rur grubych w scianach sitowych o dowolnej grubosci, przy zalozeniu ze stosunek grubosci sciany sitowej g do grubosci sciany rury go Wynosi ip = 3 i wiecej. PLThe subject of the invention is a method of fastening a pipe to a tube sheet, especially a thick-walled tube. In the known solutions of tube walls, the tubes are mounted in the holes by rolling or explosive expansion (Swiss patent 454194) using one or two explosive charges. The use of two explosives (German patent 1949573) allows to obtain a more tight connection, protecting against crevice corrosion. In other known methods of explosive welding of thin tubes with tube sheets, they are often used to achieve the best parameters of the welding process, Conical system, i.e. a system with a conical opening or with a conical end of the pipe, where the cone at the end of the pipe can be formed on the inside, outside or on both sides. Detonation of the charge in known solutions with a conical system always takes place in the direction of the pipe axis on the return from the inside of the pipe to its outlet. A system with a conical opening in the screen wall, especially with a dense perforation, for thick pipes with a gD of 3 mm is practically impossible to implement. On the other hand, the system with a conical pipe end can be used, but only in the case of tube sheets, for which \ J 20, otherwise S0 may damage the tube outside the tube sheet (ip - the ratio of tube thickness g to tube wall thickness g0). The method of fixing the pipe in the tube sheet according to the invention is based on the fact that the detonation of the explosive material has the direction of the pipe axis from the pipe outlet to its interior, in the direction of increasing the thickness of the conical pipe end. The angle ai f defining the inclination of the conical formers The ends of the pipe with respect to its axis and the angle defining the conical part of the explosive material in the charge may have different values depending on the thickness of the pipe wall, the thickness of the tube sheet, the speed of detonation of the explosive used in the technological process. Katy a i /? may take values from 0 to 30 °, and angles from -35 ° to + 35 °, assuming that for y = 0, the explosive has a cylindrical shape. The purpose is that the end of the pipe protrudes beyond the screen wall, which protects an arrangement before the detonation products adhere to the gap between the tube and the tube sheet. The protruding part of the conical end of the tube is cut off during the explosion welding process. The solution according to the invention is explained in more detail in the example of the drawing, which shows the mutual arrangement of the charge in the tube and the tube in the tube sheet opening. In the tube tube opening 1 there is 97 44697 446 3 pipe 2 with a double-sided conical tip with angles of inclination forming a = 6 ° d / 5 = 8 °. In the tube 2 there is an explosive charge consisting of a casing 3, in which there is an explosive 4 shaped at a part of the height of the land into a cone with an angle of y = -4 ° between the charge forming and axis and a detonator 5. The process of detonation of the material The method of fixing the pipe to the tube sheet according to the invention makes it possible to weld thick tubes in the tube sheet of any thickness, assuming that the ratio of the tube wall thickness g to pipe wall thickness it equals ip = 3 and more. PL

Claims (1)

1. Zastrzezenie patentowe Sposób mocowania rury w scianie sitowej, zwlaszcza rury grubosciennej o koncówce stozko- 5 wej ze stozkiem po stronie zewnetrznej, wewne¬ trznej lub obustronnie z zastosowaniem metody zgrzewania wybuchowego, znamienny tym, ze de¬ tonacja ladunku wybuchowego 'osadzonego w ru¬ rze (2) mocowanej w otworze sciany sitowej (1) io odbywa sie w kierunku narastania grubosci scian¬ ki stozkowej koncówki rury (2), a katy (a) {(i) okreslajace pochylenie tworzacych stozkowej kon¬ cówki rury (2) przyjmuja wartosci od 0° do 30° zas kat (y) okreslajacy tworzaca stozka materialu 15 wybuchowego (4) przyjmuje wartosci od —35° do +35°. OZGraf. Zam. 815 naklad 120+17 egz. Cena 45 zl PL1. Patent claim A method of fixing a pipe in a tube sheet, in particular a thick-walled pipe with a conical end with a cone on the outside, inside or on both sides using the method of explosive welding, characterized in that the detonation of the explosive charge embedded in the pipe The hole (2) is fixed in the tube sheet (1) and is in the direction of the increase in the thickness of the conical wall of the pipe end (2), and the angles (a) {(i) defining the inclination of the conical pipe ends (2) take values from 0 ° to 30 °, while the angle (s) defining the cone of the explosive (4) takes values from -35 ° to + 35 °. OZGraf. Order 815 circulation 120 + 17 copies Price PLN 45 PL
PL17838575A 1975-02-28 1975-02-28 METHOD OF FIXING A PIPE IN A SIEVE WALL PL97446B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17838575A PL97446B1 (en) 1975-02-28 1975-02-28 METHOD OF FIXING A PIPE IN A SIEVE WALL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL17838575A PL97446B1 (en) 1975-02-28 1975-02-28 METHOD OF FIXING A PIPE IN A SIEVE WALL

Publications (1)

Publication Number Publication Date
PL97446B1 true PL97446B1 (en) 1978-02-28

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ID=19971101

Family Applications (1)

Application Number Title Priority Date Filing Date
PL17838575A PL97446B1 (en) 1975-02-28 1975-02-28 METHOD OF FIXING A PIPE IN A SIEVE WALL

Country Status (1)

Country Link
PL (1) PL97446B1 (en)

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