DE1071622B

DE1071622B -

Info

Publication number: DE1071622B
Application number: DENDAT1071622D
Authority: DE
Publication date: 1959-12-24

Description

DEUTSCHESGERMAN

Die Erfindung betrifft eine Druckminderstation für Gase, bei der zur Abscheidung von Verunreinigungen der Gase ein Filter vorgesehen ist.The invention relates to a pressure reducing station for gases, in which for the separation of impurities a filter is provided for the gases.

Solche Filter werden im Laufe der Betriebszeit allmählich undurchlässig für die Gase und somit unbrauchbar. Da sich der Zeitpunkt des Unbrauchbarwerdens nicht voraussagen läßt, kann es eintreten, daß während der Arbeit die von der Druckminderstation gelieferte Gasmenge plötzlich nachläßt, so daß das Filter ausgewechselt werden muß. Bei den bisherigen Ausführungen war es hierbei erforderlich, den Arbeitsvorgang zu unterbrechen. Dies ist beispielsweise beim Schweißen von Behältern unerwünscht, da dann der beabsichtigte Temperaturverlauf gestört wird und Spannungen in den Schweißnähten entstehen können. Man hat daher vielfach eine zweite Anlage betriebsfertig bereithalten müssen, was jedoch ziemlich kostspielig ist.Such filters gradually become impermeable to the gases over the course of the operating time and thus become unusable. Since the point in time at which it will become unusable cannot be predicted, it can happen that during work the amount of gas supplied by the pressure reducing station suddenly decreases, so that the Filter needs to be changed. In the previous versions, it was necessary to do the work to interrupt. This is undesirable when welding containers, for example, because then the The intended temperature profile is disturbed and tensions can arise in the weld seams. It was therefore often necessary to have a second system ready for operation, which, however, was quite expensive is.

Es ist bereits bekannt. Filteranlagen durch eine .zweite Rohrleitung zu umgehen. Hierbei sind jedoch Tv^nrere Ventile sowie eine Umgehungsrohrleitung -fioTTvendig; es ist aber nicht Sinn der vorliegenden Erfindung, die ganze Anlage, sondern nur innerhalb der Anlage das Hauptfilter zu umgehen.It is already known. To bypass filter systems through a second pipeline. Here, however, Tv ^ nrere valves and a bypass pipeline -fioTTvendig; However, it is not the purpose of the present invention to bypass the entire system, but only the main filter within the system.

Weiterhin ist auch bekannt, in einer Gasfilteranlage eine Umschaltvorrichtung in Form von einem Dreiwegehahn vorzusehen. Durch Umschalten des Dreiwegehahnes wurde erreicht, daß einmal der Gasstrom durch ein Filter geleitet wurde, und zum anderen ging der Gasstrom auf direktem Wege zur Abnahmestelle, ohne ein Filter zu passieren. Hierdurch war es zwar möglich, das Filter stillzulegen, ohne den Arbeitsablauf zu unterbrechen. Es konnten jedoch während dieser Zeit Verunreinigungen, die in dem Gasstrom enthalten waren, zur Verbraucherstelle gelangen und dort irgendwelche Störungen hervorrufen.It is also known to use a switchover device in the form of a three-way valve in a gas filter system to be provided. By switching the three-way cock, the gas flow was achieved once was passed through a filter, and on the other hand the gas flow went directly to the take-off point, without passing a filter. This made it possible to shut down the filter without interrupting the workflow. It could, however, during During this time, contaminants that were contained in the gas flow reach the point of use and cause any interference there.

Diese Nachteile werden erfindungsgemäß dadurch vermieden, daß in der Druckminderstation außer dem Itauptfilter ein Hilfsfilter vorgesehen ist, über welches während der Zeit der Außerbetriebsetzung des Hauptfilters der Gasstrom geleitet werden kann. Hierdurch ist es möglich, ohne Unterbrechung weiter zu arbeiten, wenn das Hauptfilter erneuert wird, und es ist außerdem gewährleistet, daß keine Verunreinigungen mit dem Gasstrom zur Verbraucherstelle gelangen, da das Gas in jedem Falle gefiltert wird.These disadvantages are avoided according to the invention that in the pressure reducing station also The main filter is an auxiliary filter through which the main filter is switched off the gas stream can be directed. This makes it possible to continue working without interruption, when the main filter is renewed, and it is also guaranteed that no contamination with the gas flow to reach the point of use, as the gas is always filtered.

Das Hilfsfilter, das nur für die verhältnismäßig kurze Zeit der Auswechslung des Hauptfilters in Betrieb ist, braucht daher nicht so groß zu sein wie das llauptfilter und braucht in der Druckminderstation auch nicht unbedingt leicht auswechselbar angebracht /a werden.The auxiliary filter that only works for the relatively short period of time when the main filter is replaced therefore does not need to be as large as the main filter and needs in the pressure reducing station also not necessarily be attached / a easily exchangeable.

Für die Umschaltung vom Hauptfilter auf das Hilfshlter wird in bekannter Weise eine DreiwegehahnA three-way valve is used in a known manner to switch from the main filter to the auxiliary filter

Anmelder: Artur Gronowski, Hannover-Ricklingen, Barthold-Knaust-Str. 10Applicant: Artur Gronowski, Hanover-Ricklingen, Barthold-Knaust-Str. 10

Artur Gronowski, Hannover-Ricklingen,
ist als Erfinder genannt wordenArtur Gronowski, Hanover-Ricklingen,
has been named as the inventor

in der Druckminderstation selbst vorgesehen, wobei vorzugsweise für die Absperrung des Hilfsfilters gegentiber dem Hauptfilter ein Rückschlagventil vorgesehen ist.provided in the pressure reducing station itself, preferably for the blocking of the auxiliary filter opposite a check valve is provided for the main filter.

Eine unbeabsichtigte Umschaltung auf das Hilfsfilter kann dadurch vermieden werden, daß eine Sperre vorgesehen ist, die bei der Umschaltung beispielsweise des Dreiwegehahnes zunächst von Hand gelöst werden muß.Unintentional switching to the auxiliary filter can be avoided by a Lock is provided, when switching, for example, the three-way valve initially by hand must be resolved.

Der Dreiwegehahn kann zugleich als Absperrorgan auf der Druckeinlaßseite der Druckminderstation ausgebildet sein, so daß sich dort ein besonderes Absperrventil erübrigt.The three-way valve can also be designed as a shut-off device on the pressure inlet side of the pressure reducing station so that there is no need for a special shut-off valve.

Die Erfindung ist an einem Ausführungsbeispiel und in weiteren Einzelheiten in den Fig. 1 bis 3 erläutert. The invention is explained using an exemplary embodiment and in further details in FIGS.

Fig. 1 zeigt die Druckminderstation im Seitenschnitt, mit einer Stellung des Dreiwegehahnes, in der die Druckeinlaßseite abgesperrt ist;Fig. 1 shows the pressure reducing station in side section, with a position of the three-way cock in the the pressure inlet side is shut off;

Fig. 2 zeigt die Stellung des Dreiwegehahnes bei Einschaltung des Hauptfilters;2 shows the position of the three-way cock when the main filter is switched on;

Fig. 3 zeigt die Stellung des Dreiwegehahnes bei Einschaltung des Hilfsfilters.Fig. 3 shows the position of the three-way valve when the auxiliary filter is switched on.

Die Druckminderstation besteht in an sich bekannter Weise aus einem Druckminderventil 11, das mittels einer federbelasteten Membran 13 den Druck auf der Druckauslaßseite 3 praktisch konstant hält. Uber den Einlaß 2 wird das Druckgas zugeleitet. Befindet sich der Dreiwegehahn 19 mit der durchgehenden Ouerbohrung 21 und der auf diese Querbohrung 21 einmündenden Bohrung 22 in der in Fig. 2 gezeigten Stellung, so wird das Druckgas durch die Bohrung22, die Querbohrung 21, den anschließenden Kanal 4 in das Innere des Filtergehäuses 5 geleitet, gelangt von hier radial durch das hohlzylindrische Hauptfilter 6 in dessen Innenraum und von hier in ein Rohr 15 durch Bohrungen 7, von dort tritt es unterLüftung des Rück,, , / . 909 690/96 The pressure reducing station consists in a manner known per se of a pressure reducing valve 11 which, by means of a spring-loaded diaphragm 13, keeps the pressure on the pressure outlet side 3 practically constant. The compressed gas is fed in via inlet 2. The three-way cock 19 by the solid Ouerbohrung 21 and the opening out of this transverse bore 21 bore 22 in the position shown in Fig. 2 position, the pressurized gas through the bore 22, the transverse bore 21, the subsequent channel 4 into the interior of the filter housing is 5 , passes from here radially through the hollow cylindrical main filter 6 into its interior and from here into a pipe 15 through bores 7, from there it passes under ventilation of the back ,,, /. 909 690/96

Claims

Impact valve 8 through longitudinal bores 9 of a plug and further via the reducing valve insert into the space 12 under the membrane 13 and from here through the channel 14 to the outlet side 3. From the three-way plug 19 onwards, S1Oi1 ^ per gas guide essentially does not differ from the known. If, however, the three-way valve is brought into the position shown in FIG. 3, the pressurized gas flows from the inlet side 2 through the transverse bore 21 in the plug of the three-way valve into a cavity 20, which is preferably arranged around the pressure reducing valve insert 11 Iierum. In this space there is also a hollow cylinder-shaped filter, the auxiliary filter 10, which is inserted tightly into the housing 1 at its upper and lower end faces and is held in place by means of the same stopper that also holds the insert of the pressure reducing valve. The gas flows from the outer part of the cavity 20 through the auxiliary filter 10 into its interior and from here, like the gas that has passed through the main filter 6, continues via the pressure reducing valve 11 into the space 12 under the membrane 13 and the bore 14 to the outlet side 3 In the position of the three-way valve 19 shown in FIG. 3, the filter housing 5 can be removed for the purpose of replacing the main filter 6. An outflow of the compressed gas from the cavity 20 into the interior of the tube 15 is prevented by the ball check valve 8. Near the lower end of the tube 15, which is used to receive and attach the main filter 6, a transverse bore 17 is made in the tube 15, which. is closed upwards to the interior of the tube 15 by a plug 16. This is used to drain off condensation and other impurities that have settled in the lower part of the filter housing 5. For this purpose, the needle valve 18 located at the lower end of the tube 15 is lifted from its seat. Instead of the ball valve 8, a shut-off device coupled to the three-way valve 19 could also be provided which, in the position of the shut-off device 19 shown in FIG Position of the three-way valve releases this access. Instead of a three-way cock 19, any other cock or valve arrangement with the same effect can of course also be used. The advantage of the three-way cock, however, besides its particularly simple mode of operation, is that it also acts as a shut-off device on the inlet side when it assumes the position shown in FIG. As a result, a special shut-off device on the inlet side is unnecessary. Claims-.

1. Pressure reducing station for gases with filter, in which the filter can be bridged by a bypass line and the switchover from the main line to the bypass line is made by a three-way valve, characterized in that in the pressure reducing station, in addition to the main filter ( 6), an auxiliary filter ( 10) is provided, through which the gas flow can be passed while the main filter (6) is not in operation.

2. Pressure reducing station according to claim 1, characterized in that a check valve (8) is preferably provided for shutting off the auxiliary filter (10) relative to the main filter (6).

3. Pressure reducing station according to claim 1 and 2, characterized in that the auxiliary filter (10) is arranged in a space (20) provided around the pressure reducing valve insert (11) .

4. Pressure reducing station according to claim 1 to 3, characterized in that on the three-way valve, which is used to switch from the main filter (6) to the auxiliary filter (10) , a releasable lock to prevent unintentional switching from the main filter ( 6) to the auxiliary filter ( 10) is provided.

Considered publications:
German patent specification No. 955 741:
U.S. Patent Mr. 1,677,148.

1 sheet of drawings

O 909 690/96 12.O 909 690/96 12.