CS240491B1 - Root plate for tubes' circumferential welds - Google Patents
Root plate for tubes' circumferential welds Download PDFInfo
- Publication number
- CS240491B1 CS240491B1 CS846954A CS695484A CS240491B1 CS 240491 B1 CS240491 B1 CS 240491B1 CS 846954 A CS846954 A CS 846954A CS 695484 A CS695484 A CS 695484A CS 240491 B1 CS240491 B1 CS 240491B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- root
- tubes
- head
- washer
- cooling
- Prior art date
Links
- 238000001816 cooling Methods 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 210000003813 thumb Anatomy 0.000 claims abstract description 8
- 229910001369 Brass Inorganic materials 0.000 claims abstract description 3
- 239000010951 brass Substances 0.000 claims abstract description 3
- 239000000498 cooling water Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 3
- 241001016380 Reseda luteola Species 0.000 abstract description 20
- 238000003466 welding Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 239000000945 filler Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Podložka fcoreňa pre obvodové zvary rúrok s vnútornými priemermi 16 až 50 mm a hrúbkami stien 2 až 3,5 mm, slúži pre prevádzanie tupých I-zvarov metódou TIG bez přídavného materiálu, predovšetkým pre nadpojovanie chladičových rúrok na vačšie dížky a pre priváranie oblúkov u chladičových U-rúrok z nízkouhlíkatých a .austenitických materiálov a mosadzi pre rúrkové teplovýmenné aparáty. Pozostáva z rnosnej rúrky, centrovacej vložky, pružnej rúrky a chladiacej hlavy, v ktorej je osadená měděná podložka a hydraulický palec. Podložka koreňa je neotočná, pričom zvárané rúrky sa počas zvárania otáčajú. Konštrukčné riešenie súbežného chladenia a hydraulického přítlaku hlavice v mieste koreňa zvaru umožňuje dokonalé tvarovanie a kalibrovanie koreňa zvaru pri 100% zaručenom prievare.Washer fcoreňa for circumferential welds pipes with internal diameters of 16 to 50 mm a with wall thicknesses of 2 to 3.5 mm, serves for transferring blunt I-welds by TIG method additive material, especially for interconnecting the radiator tubes to a greater extent lengths and for welding curves in coolers Low-carbon and .austenitic U-tubes materials and brass for tubular heat exchange apparatuses. It consists of a flat tube, centering insert, flexible tube, and of a cooling head in which copper is mounted washer and hydraulic thumb. Pad the root is non-rotating, with welded tubes rotate during welding. Design solution co-cooling and hydraulic the pressure of the head at the point of the root of the weld allows perfect shaping and calibration weld root at 100% guaranteed draft.
Description
Vynález rieši -podložku kcreňa pre obvodové zvary rúrok s vnútornýmí priemermi 16 až 50 mm a s hrubkami steny 2 až 3,5 mm k prevádz-aniu tupých I-zvarov mechanizovanou metodou TIG bez přídavného materiálu, predovšetkým pre nadpojovanie chladičových rúrok na vačšie dížky a pre privár-anie oblúkov u chladičových U->rúrok z nízkouhlíkatých a austenitických materiálov a mosadzi pre rúrkové teplovýmenné aparáty.The present invention provides a core liner for circumferential welds of tubes with inner diameters of 16 to 50 mm and wall thicknesses of 2 to 3.5 mm for the operation of butt I-welds by the TIG method without additional material, in particular for connecting condenser tubes to larger lengths and arc welding of cooler U-> tubes of low-carbon and austenitic materials and brass for tubular heat exchange apparatuses.
Doposial sa prevádzajú obvodové zvary chladičových rúrok oblúkov,ými zváracími metódami bez podložky s plynovou aleDo bez plynoivej ochrany, takže -převedené zvary vykazujú vyššie prevýšenie kořena a povrchu zvaru, čo má mepriaznivý vplyv n-a prietok média rúrkami, na zanášanie rúrok, na nasúv-anie rúrok cez přepážky a na životnost zvarového spoja a odporovým zváraním, kde je obť-ažné a práč,ne odstťaňovanie vnútorného- otřepu po zvára-ní.Up to now, circumferential welds of arc cooler tubes have been carried out by welding methods without a gas or butt gas shield, so that the transferred welds exhibit a higher elevation of the root and surface of the weld, which has a beneficial effect on the fluid flow through the tube, tube insertion, tubes over the baffles and on the life of the weld joint and resistance welding, where it is difficult and scrubbing, not de-burring after welding.
Podstatou podložky koreňa pre obvodové zvary rúrok podta vynálezu je následovně technické riešenie. Nosná rúrka podložky koreňa je- napojená ,na centrovaciu dutú vložku pokračujúcu pružnou rúrkou, ku ktorej je odnímatelne uchytená hlavica opatřená držiakom a dvorná vodiacimi výstupkami, medzi ktorými je měděná podložka zasahujúca do chladiacej dutiny hlavice, ktorá je přepojená kanálikom s válcovou dutinou držiaka, v ktorej je csadený výsuvný hydraulický palec s tesniacim krúžkom.The root washer for the circumferential welds of the pipes according to the invention is based on the following technical solution. The root washer support tube is connected to the centering hollow liner, continuing with a flexible tube, to which a removably attached head is provided with a holder and a yard guide protrusion, between which a copper washer extends into the cooling cavity of the head, which is interconnected with which is fitted with a pull-out hydraulic thumb with a sealing ring.
Na nosnú rúrku je napojený vstup chladiacej vody pokračujúci prí-vodnou rúrkou až do chladiacej dutiny hlavice ,a výstup chladiacej vody, pričom nosná rúrka je uchytená v pevnej objímke a zaistená skrutkou.A cooling water inlet extending through the inlet pipe up to the cooling cavity of the head, and a cooling water outlet are connected to the support tube, the support tube being retained in a fixed sleeve and secured by a screw.
U podložky koreňa pre obvodové zvary rúrok -podta vynálezu umožňuje konštrukcia neotočnej pevnej podložky so súbežným chladením a hydraulickým prítlakom hlavice ku koreňu zvaru cez hydraulický palec dokonalé tvarov,anie koreňa zvaru s kalibrovaným převýšením koreňa zvaru a so 10-0 percentným zaručeným prievarom zvarového spoja.In the root washer for circumferential welds of the tubes according to the invention, the construction of a non-rotatable rigid washer with simultaneous cooling and hydraulic thrust of the head to the weld root through the hydraulic thumb makes perfect shapes without the weld root with calibrated weld root elevation and 10-0 percent guaranteed weld joint.
Podložka koreňa pre obvodové zvary rúrok podía vynálezu je schematicky znázorněná na výkrese, kde ,na obr. 1 je jedno z možných konštrukčných převedení podložky koreňa v -náryse v- pracovnej polohe a na obr. 2 je rez hlavicou podložky koreňa.The root washer for the circumferential welds of the tubes according to the invention is schematically shown in the drawing, where, in FIG. 1 is one possible constructional design of the root washer in a front view of the working position, and FIG. 2 is a cross-sectional view of the root washer head.
Podložka koreňa (obr. 1 -a obr. 2] je tvořená nosnou rúrkou 1, na ktorú navázuje centrovacia dutá vložka 2, pokračujúc-a pružnou -rúrkou 3, ku ktorej je -priskrutkovaná hlavica 4 opatřená držiakom 5 a dvorná vodiacimi výstupkami 6, medzi ktorými je prispájkovaná měděná podložka 7 zasahujúca do chladiacej dutiny 8 hlavice 4, ktorá je přepojená kanálikom 9 s válcovou dutinou 10 držiaka 5, v ktorej je osadě,ný výsuvný hydraulický palec 11 s tesniacim „O“ krúžkom 12.The root washer (Fig. 1-a Fig. 2) consists of a support tube 1, to which a centering hollow insert 2 is connected, continuing and a flexible tube 3, to which the screwed head 4 is provided with a holder 5 and yard guide projections 6, between which is soldered a copper washer 7 extending into the cooling cavity 8 of the head 4, which is interconnected by a channel 9 with a cylindrical cavity 10 of the holder 5, in which a sliding hydraulic thumb 11 with a sealing "O" ring 12 is mounted.
Na nosnú rúrku 1 je napojený vstup 13 chladiacej vody pokračujúci prívodnou rúrkou 14 až do chladiacej dutiny 8 hlavice 4 a výstup 15 chladiacej vody, pričom nosná rúrka 1 je uchytená v pevnej objímke 16 a zaistená skrutkou 17.A cooling water inlet 13 is connected to the support tube 1 and continues through the inlet tube 14 to the cooling cavity 8 of the head 4 and the cooling water outlet 15, the support tube 1 being mounted in a fixed sleeve 16 and secured by a screw 17.
Šířka H a priemer A centrovanej dutej vložky 2, vzdialenosf L medzi podložkou 7 a centrovanou dutou vložkou 2, priemer B hlavice 4, rádius Ri a priečna šířka S vodiaclch výstupkov B a rádius Rs medenej podložky 7 sú určené v závislosti na vnútornom priemere D zváraných rúrok následovně:The width H and the diameter A of the centered hollow insert 2, the distance L between the washer 7 and the centered hollow insert 2, the diameter B of the head 4, the radius R1 and the transverse width S of the guide lugs B and the radius Rs of the copper washer 7 are determined according to the inner diameter D pipes as follows:
H = (4 — 5) . D,H = (4-5). D
A = D —- (0,2 — 0,4 mm),A = D —- (0.2-0.4 mm),
L = (-20 — 25) . D,L = (-20-25). D
B — D — (1 — 2 mm j,B - D - (1-2 mm J,
Ri · = D : 2, 'Ri · = D: 2
S = (-0,4- 0,6) . D aS = (-0.4- 0.6). Will give
R2 = (D : 2) — (0,1 — 0,15 mmj, pričom střed rádiusov Ri a Rz je ce-ntrický s priemerom B hlavice 4.R2 = (D: 2) - (0.1 - 0.15 mm), the center of the radii R1 and R2 being centered with the diameter B of the head 4.
Zváranie obvodových zvarov rúrok na podložke koreňa je následovně.The welding of the circumferential welds of the tubes on the root support is as follows.
Podložka koreňa je pevne ineotočne uchytená v- objímke 16, pričom zvárané rúrky 18 sa počas zvárania otáč-ajú v centrovacom a kladičkovom vedení. Najskor sá nasunie na podložku koreňa jedna rúrka 18, pričom tlak chladiacej vody je nulový a hydraulický palec 11 je zasunutý vo valcovej dutině 10. Rúrka 18 sa prisunie až k objímke 18, ktorá tvoří súčasne doraz a -přiloží sa druhá rúrka 18, pričom zvarový spoj je v -střede n-a medenej podložke 7.The root washer is fixed in a rotationally fixed manner in the sleeve 16, wherein the welded tubes 18 rotate in the centering and roller guide during welding. First, one tube 18 is pushed onto the root support, the cooling water pressure is zero and the hydraulic thumb 11 is inserted in the cylindrical cavity 10. The tube 18 is pushed up to the sleeve 18 which simultaneously forms the stop and the second tube 18 is welded. the joint is centered on the copper washer 7.
-Po otvo-rení přívodu chladiacej vody nastáva prietokom chladiacej vody chladenie hlavice 4 a súčasne tlakom vody vysunutie hydraulického palca 11 z valcovej dutiny 10, čím sa dosiahne působením klopného momentu medzi hydraulickým palcom 11 a centrovacou dutou vložkou 2 cez pružnú rúrku 3 želateliný přítlak hlavice 4 v mieste zvaru, kde hlavica 4 je opřená o vnútorný povrch rúrok 18 vodiacimi výstupkami 6, pričom medzi měděnou podložkou 7 a vnútorným povrchom rúrok 18 v mieste budúceho obvodového zvaru je medzera velkosti Ri — Rz = 0,il - 0,15 mm, ktorá udává velkost -pre-výšenia koreňa.Upon opening the cooling water supply, cooling of the head 4 and, at the same time by the water pressure, the hydraulic thumb 11 is disengaged from the cylinder cavity 10, thereby achieving a desirable head pressure by the tilting moment between the hydraulic thumb 11 and the centering sleeve 2. 4 at the weld location, where the head 4 is supported on the inner surface of the tubes 18 by guide lugs 6, with a gap of size R 1 - R 2 = 0.1, I - 0.15 mm between the copper washer 7 and the inner surface of the tubes 18 which indicates the size of the root-elevation.
Následuje mechanizované zvára-nie metodou TIG bez přídavného materiálu tupého I-zvaru s nulovou zvarovou medzerou. Počas zvárania je kořeň zvaru tvarovaný — — kalibrovaný měděnou podložkou 7, takže sa pri -takom-to spósobe zváranid dosahuje 100% zaručený prievar koreňa s minimálnym převýšením koreňa a s nulovým převýšením ρο-vrchu zvaru. Pó ukončení zvárania sa zastaví přívod chladiacej vody, čím klesne tlak vody -a hlavica 4 sa uvolní, takže je možné volné odložil zvare-né rúrky 18 z podložky koreňa.This is followed by mechanized TIG welding with no butt I-weld filler material with zero weld gap. During welding, the weld root is shaped by calibrating the copper washer 7 so that a 100% guaranteed root penetration is achieved with a minimum root elevation and a zero elevation of the weld top. After the welding is finished, the cooling water supply is stopped, whereby the water pressure drops and the head 4 is released so that the welded tubes 18 can be freely removed from the root support.
Podložku koreňa je možné použiť aj pre zváranie tupých Y-zvarov vačších hrúbok ako 3,5 mm v dvoch vrstvách, s použitím přídavného materiálu v druhej vrstvy.The root washer can also be used for butt welding Y-welds of greater thickness than 3.5 mm in two layers, using filler material in the second layer.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS846954A CS240491B1 (en) | 1984-09-17 | 1984-09-17 | Root plate for tubes' circumferential welds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS846954A CS240491B1 (en) | 1984-09-17 | 1984-09-17 | Root plate for tubes' circumferential welds |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS695484A1 CS695484A1 (en) | 1985-07-16 |
| CS240491B1 true CS240491B1 (en) | 1986-02-13 |
Family
ID=5417749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS846954A CS240491B1 (en) | 1984-09-17 | 1984-09-17 | Root plate for tubes' circumferential welds |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS240491B1 (en) |
-
1984
- 1984-09-17 CS CS846954A patent/CS240491B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS695484A1 (en) | 1985-07-16 |
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