DE1915755U - EXTENSION UNIT FOR PIPING WITH ELECTRICAL DISCONNECTION. - Google Patents

Description

Dr. REINHOLD SCHMIDT

- Dipl.-Wirtsch.-Ing. AXEL HANSMANN

Diploma in Phys. SEBASTIAN HERRMANN

E 16 473 / 47f Gm Oppenau, March 22, 1965

Eisenbau Albert Ziefle KG,
Kehl / Rhine μ

L J

Dr Sch / 1

Extension piece for pipelines with electrical separation point

The innovation relates to an extension piece for pipelines with an electrical separation point that can be locked using tension spindles. In known expansion pieces for pipe connections, a socket pipe and a sword pipe are located at one of the pipe ends are sealed against one another by a ring seal pressed in by means of a pick-up ring. Serve to connect the cable ends special flanges on the extension piece, which are line-side mating flanges opposite. (Of course, the same applies if the counter flanges instead of a continuous pipeline in the narrower sense, belong to a valve in which the expansion piece is encased. The following is for the sake of simplicity In relation to the counter flanges mentioned, only one pipeline is spoken of.) The locking spindles mentioned run in general between two mutually opposite line-side Flanging through. Only for pipelines in which the mating flanges on the two pipe ends have bores in the dimensions and nominal sizes differ from one another, "one has to

Dr. REINHOLD SCHMIDT, 7603 OPPENAU, Postfach 25, Allmendplatz 4, phone: 710

have to grab a more agile way, the tension spindles between an auxiliary retaining flange carried by the expansion piece and a line-side Let the flange run.

If it is a question of a pipe connection, a to install electrical separation point, so you have with simple ■ Connections without length-compensating tension spindles have always been the separation point in the single connection piece that is already present placed. On the other hand, with all connections that have been used up to now with lockable expansion pieces, i.e. with those that run between the ends of the cables, especially with cables with larger lengths, the tension absorption and the length compensation used tension spindles, the following solution is used as the only economical solution: one has for at least at one end of the tension spindles necessary electrically insulated storage, the line-side flanges drilled out in order for the to create space for insulating sleeves to be placed on the tension spindles. Such work must be done for the attachment of lockable expansion pieces are practically always carried out at the construction site; this is due to installation in old, already laid lines obvious, because with these the connecting parts for the insulated introduction of the new spacers in place only

need to be prepared; but also with Itfeu relocations In practice, the delivery of expansion pieces is almost always separate from the delivery of the conduit pipes himself, so that two deliveries come together on the construction site, which, when assembled together, only result in the electrical separation point. Almost inevitable mistakes and flaws here are! ^ __

unintentional non-drilling of the counter flange, associated with it Rework in the pipe trench, which is very annoying and time-consuming;

the need for the use of qualified personnel to maintain a proper Insertion of the insulating washers and insulating sleeves to be carried out at the installation site;

an extremely difficult and time consuming job of threading the insulating sleeves and washers, especially in the pipe trench. It should be remembered that there is usually hardly any at the sole area. There is room to tighten a screw, let alone perform a visual inspection of the fit and proper placement of the sleeves; the danger on the construction site that earth or other damp foreign bodies that are electrically conductive to the rope can get into the connection, reach;

Finally, even if, for some reason, they are an upgrade removed and an isolation point must be removed, the holes larger than after the lorm. That means therefore a bypassing the abnormality for the connection of other fittings.

These difficulties, which are common in all previously used insulated pipe connections with lockable expansion pieces in practical application can be avoided according to the invention by first looking at the above mentioned, originally for the use of pipe ends different dimensions, holes, etc. intended for common connections with the same pitch circle divisions of the pipe end flanges are not considered economical Serves removal pieces whose locking spindles do not go through from one end of the pipe to the other, but only between an auxiliary retaining flange carried by the expansion piece and a line-side flange. Then you combine all the insulation points in the parts belonging to the expansion piece (in particular retaining flange and pick-up ring), while the line-side connection points remain free of insulation.

This gives the expansion pieces of the type mentioned a new radio

tion, namely that of electrical separation, - transmission "- a Opportunity that was previously neither recognized nor exploited. The reason for this is evidently a certain prejudice, which the experts, however, had, those with an additional retaining flange for the tension spindles loaded expansion pieces not only for the relatively few cases of connection ^^. Clay pipe ends of different dimensions, holes etc. to be used, but also for the vast majority of "normal" connections on both sides equally sized Line ends. In contrast, it has now been recognized that such a Prejudice, if an electrical separation point has to be installed, is unjustified. Rather, there is the little extra effort Due to the special retaining flange on the extension piece, it is out of proportion to the surprisingly large ones purchased with it Benefits. It has now become possible to produce an expansion piece for pipelines with an electrical separation point, which while maintaining the advantages of the previous isolated expansion pieces between pipe ends or the like can be used in which the old normal counter flanges are retained and not specially drilled out or otherwise changed or the additional purpose of electrical Separation need to be adjusted. All measures that are necessary for inserting the insulating elements can be carried out

that is to be taken at the place of manufacture of the extension piece; there is no need for any additional work to isolate the connection point at the installation or laying site of the line.

The innovation is described on the basis of the drawing shows in longitudinal half-section an isolated separation point in one continuous pipeline with a lockable extension piece with tension spindles, which go through from the one line counterflange only to a holding flange carried by rom expansion piece.

For the connection are the opposite pipe ends each provided with a splash 1 or 2, which are used for connection of the expansion piece. This consists of a socket pipe 3 with a. Connection flange 33 and a sword tube 5 with connection flange 6. Have these two ear parts of the connection piece a certain play to each other and depending on the requirements can be pushed together to a greater or lesser extent as it is the dashed lines 7 and 8 can be seen. I'm more profiled Sealing ring 9 made of electrically insulating material, which lies down on both sides of the epee tube with flat lugs, can by means of the pickling ring 10 into the sealing gap

be pressed.

Pull spindles 13 are used to establish the connection. These are distributed around the circumference in the number required in each case. In the sectional drawing there is only one of these spindles shown. It runs between the line flange 2 and -. a retaining flange 30 carried by the expansion piece. Clamping nuts 16, 17, 31 and 32 hold the tension spindle firmly, and 'another Nut 18 ensures that the pick-up ring 10 is pressed on The outer end of the socket pipe 3 is seated connecting flange 33 in dimensions and pitch circle arrangement 34 to the opposite Matched mating flange 1 of the line end there. A dependency between the hole circle arrangements on both sides in the pipe flanges 1 and 2 does not exist. Seals 22 and 23 lie between the cooperating flange parts of the line ends on both sides.

The isolation of the tension spindles is inward, seen from the Pipeline flanges on both sides are removed and laid, specifically in the bores of the retaining flange 30 and the pick-up ring 10. These are already appropriate when they are made in the workshop held wide in order to be able to accommodate the insulating sleeves that are laid around in addition to the tension spindle, in the retaining ring 30 the

Insulating sleeve or sleeve 43 and in the pick-up ring 10 the insulating sleeve 46. This is provided with an annular flange, which also ensures the insulation in the axial direction. On both sides of the insulating point 43 in the holding flange 30, insulating washers 45 and 45 are inserted. Here, too, it requires no intervention in the reported intersections of double line Endflan- "" ^ see. Rather, these remain unchanged when the electrical (fuel components) are installed and removed.

Claim to protection;

Claims (1)

Dr. REINHOLD SCHMIDT Dipl.-Wirtsch.-Ing. AXEL HANSMANN Dipl.-Phys. SEBASTIAN HERRMANN E 16 473 / 47f Gm o _PP enau, March 22, 1965 Eisenbau Alterti Ziefle KG ·., _Me inzeiche "-Kehl / Rhein 3414 L J Dr.Sch / W S c h u t ζ claim Extension piece for pipelines that can be locked by means of tension spindles with electrical separation point, each at one of the pipe ends lying socket and epee pipe, which are sealed against each other by a ring seal pressed in by means of a pick ring are, characterized in that when using locking spindles, in a manner known per se between a retaining flange carried by the extension piece and a line-side Flange run, all insulation points (43, 44, 45, 46) in the parts belonging to the expansion piece (retaining flange 30 and pick-up ring 10) are combined, while the line-side connection points (1/33, 2/6) remain free of insulation. Dr. REINHOLD SCHMIDT, 7603 OPPENAU, Postfach 25, Allmendplatz 4, phone: 710