DE1778380C - Safety device for constant pressure welding systems - Google Patents
Safety device for constant pressure welding systemsInfo
- Publication number
- DE1778380C DE1778380C DE19681778380 DE1778380A DE1778380C DE 1778380 C DE1778380 C DE 1778380C DE 19681778380 DE19681778380 DE 19681778380 DE 1778380 A DE1778380 A DE 1778380A DE 1778380 C DE1778380 C DE 1778380C
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- constant pressure
- safety device
- welding systems
- lines
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 238000003466 welding Methods 0.000 title claims description 4
- 239000007789 gas Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- HSFWRNGVRCDJHI-UHFFFAOYSA-N acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
Description
Die Erfindung betrifft eine Sicherheitseinrichtung für Gleichdruckschweißanlagen, d. h. Schweißanlagen, bei denen Gas- und Sauerstoffdruck mittels Regelvor- so richtungen in gleichbleibender Höhe gehalten werden.The invention relates to a safety device for constant pressure welding systems, d. H. Welding systems, where gas and oxygen pressure are controlled by means of a control system directions are kept at a constant height.
Bei Gleichdruckschweißanlagen kann es vorkommen, daß beim Nachlassen des Druckes in der einen Leitung das unter höherem Druck stehende Gas über nicht dicht schließende Brenner in die drucklose Leitung überströmt. Bei Wiederinbetriebnahme der Anlage kann es dann zu Explosionen kommen.With constant pressure welding systems it can happen that when the pressure is released in one of the Pipe the gas under higher pressure into the pressureless pipe via burners that do not close tightly overflows. When the system is started up again, explosions can occur.
Die Möglichkeit der Verwendung eines Kontaktmanometers, das in Abhängigkeit vom Leitungsdruck ein Steuerventil in der Gasleitung za betätigen vermag, ist in dem obenerwähnten technischen Zusammenhang zwar bekannt (deutsche Patentschrift 345 958). Die Erfindung löst jedocb das angesprochene Problem auf eine, ganz besonders vorteilhafte Weise.The possibility of using a contact pressure gauge, which depends on the line pressure capable of actuating a control valve in the gas line za is in the above-mentioned technical context although known (German Patent 345 958). However, the invention solves that mentioned Problem in a particularly beneficial way.
Es ist erfindungsgemäß an die Hochdruckleitungen der Anlage je ein Kontaktmanometer angeschlossen, weiche Manometer derart geschaltet sind, daß sie nur bei Vorhandensein beider für jede Leitung vo-gegebener Mindestdrücke Steuerventile in den Leitungen öffnen.According to the invention, a contact manometer is connected to each of the high-pressure lines of the system, soft manometers are switched in such a way that they are only vo-given for each line if both are present Open the minimum pressure control valves in the lines.
An Hand eines Schaltschemas soll die Erfindung nachfolgend erläutert werden.The invention will be explained below using a circuit diagram.
Aus nicht dargestellten Vorratsbehältern oder Hauptversorgungsleitungen strömt Sauerstoff unter 6atü und das Schweißgas, z.B. Azetylen, unter 0,8 atü in die Leitungen 1 und 2 ein. Der Druck in diesen Leitungen 1, 2 wird durch die Kontaktmanometer 3, 4 gemessen. Erst wenn diese Manometer 3, 4 einen Mindestdruck von 5 bzw. 0,6 atü registrieren, wird durch deren in Reihe geschaltete Kontakte die Stromzufuhr zu einem elektropneumatischen Relais 5 hergestellt, das daraufhin die in den Leitungen 1 und 2 angeordneten pneumatischen Ventile 6, 7 öffnet und damit Sauerstoff und Schweißgas über den Gleichdruckregler 8 zu den Verbrauchern fließen läßt. Unterschreitet der Druck in einer der beiden Leitungen 1, 2 den vorgegebenen Wert, so wird das Relais 5 stromlos und beide Ventile 6, 7 werden geschlossen.Oxygen flows below 6 atmospheres and the welding gas, for example acetylene, flows below 0.8 atmospheres into lines 1 and 2 from storage containers or main supply lines (not shown). The pressure in these lines 1, 2 is measured by the contact manometers 3, 4. Only when these pressure gauges 3, 4 register a minimum pressure of 5 or 0.6 atmospheres, their series-connected contacts produce the power supply to an electropneumatic relay 5, which then activates the pneumatic valves 6, 7 arranged in lines 1 and 2 opens and thus allows oxygen and welding gas to flow through the constant pressure regulator 8 to the consumers. If the pressure in one of the two lines 1, 2 falls below the specified value, the relay 5 is de-energized and both valves 6, 7 are closed.
Es ist somit gewährleistet, daß nach dem Gleichdruckregler auf der Gleichdruckseite keine Druckdifferenz auftreten kann, wenn der am Kontaktmanometer eingestellte Auslösedruck dem Netzdruck in der Gleichdruckanlage entspricht.It is thus guaranteed that there is no pressure difference after the constant pressure regulator on the constant pressure side can occur if the trigger pressure set on the contact pressure gauge exceeds the network pressure in the Equal pressure system corresponds.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681778380 DE1778380C (en) | 1968-04-25 | Safety device for constant pressure welding systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681778380 DE1778380C (en) | 1968-04-25 | Safety device for constant pressure welding systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE1778380A1 DE1778380A1 (en) | 1972-03-02 |
| DE1778380C true DE1778380C (en) | 1973-03-22 |
Family
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