DE1913148U - ELECTRICALLY INSULATING PIPE INTERMEDIATE. - Google Patents

Description

RA.077 737 * 13.2.65

Patent attorney Dr. jur. Dr. Ing.Oscar Zeller

Hamburg 1, the

Tel: 24 45 23 Große Allee 30

Wire address: Invention Hamburg _ "/"

Bank account: Deutsche Bank AG, Hamburg

Deposit fund D
Postal checking account: Hamburg, No. 51156

Applicant: Dipl.-Efm. Hans Berghöfer,
Hamburg-Poppenbüttel

Electrically insulating pipe connectors for high and low pressure

For gas pipes in particular, there is an acute need for absolutely leak-proof, electrically insulating pipe connectors, because they represent an excellent earth, and thus the earth current flows over them. At the hemp-sealed socket connections The increased electrical resistance that exists there often leads to heating through which the hemp seal can burn. Then gas can escape.

There are such insulating pipe intermediate pieces known in which two fitting-like metal screw pieces, such as sleeves or nipples, which are made by inserting or pouring plastic compound or potting compound, such as e.g. bitumen, are connected to one another in such a way that they form a mechanical unit, but electrically against one another are isolated,

Plastic is not elastic and is subject to the so-called cold I ¹ IuB due to the temperature-related pipe expansions and the resulting loads. The usable plastic materials as well as potting soften at temperatures of 80 ⁰ C.

According to the invention, these disadvantages are avoided and, in addition, simpler manufacture and thus cheaper and mechanical advantages offered *

In one exemplary version each for vertical and for low pressure the invention is shown in the drawings, namely shows:

Figure 1 is a longitudinal section through the electrically insulating pipe intermediate piece for high pressure, Figure 2 is a cross-section "on the line X-X through the same piece,

Figure 3 is a longitudinal section through the pipe connector for low pressure,

Figure 4 shows a cross-section on the line A-A through the same piece,

5 and 7 each show a longitudinal section through other embodiments,

Fig. 6 and g each show a cross section through these other embodiments,

9 shows a longitudinal section through a corresponding electrically insulating intermediate piece between a pipeline on the one hand and a metal hose on the other hand.

The pipe adapter of the invention consists of parts 3, 4, 5 and 6 as the main parts made of metal, which are in the Case for high pressure (Fig. 1 and 2) so pushed into one another and at the same time by an inter-pressed, hose-like G-ummirohrstück 7 (synthetic rubber can also be used instead of rubber find) are isolated and sealed against each other that they can be opened or closed by inserting a rubber sealing washer 8. Screw in two G-screw pieces 3 and 6 to form a high-pressure and tensile-proof, sealed, electrically insulating one and due to the material still become elastic in every direction ..

I ¹ Ur low pressure (Fig. 3 and 4) a piece of rubber hose is pushed into an extra long reducing sleeve 12 as above, until the edge 13 of the Schalauchstückes 11 abuts and flanges inwards. A piece of the hose 11 must then protrude from the sleeve 12. Then a long, slightly conical double nipple 14, the external thread size of which at the beginning corresponds approximately to the internal size of the hose section 11 pushed into the socket 12, is screwed into it, so that the taper of the external nipple thread causes the rubber to be pressed more tightly between socket 12 and nipple 14 the tighter it is screwed in. Finally, the beginning of the screwed-in double nipple 14 comes to rest on the inwardly flanged edge 13 of the hose section 11, and at the same time the collar 15 located at the end of the nipple thread presses the other edge 16 of the hose section 11 protruding from the socket 12 against the edge 17 of the socket 12,

Figures 5 to 9 show other embodiments of such electrically insulating spacers. The operation of the same corresponds to that of the former Examples

The embodiment shown in Fig. 5 is like that in Fig. 1 and 2 intended for high pressure. Like this, it has the insert (5) with an external thread, its Bund (9) but the outer diameter of the entire pipe adapter is equivalent to. This collar (9) is provided with 4 holes into the rubber hose pieces have been put into it that is in its length of strength of the federal government (9). ' Against the federal government (9) with the

Holes with the rubber hose pieces is a molded rubber piece (7) in the form of a rubber tube from the external thread Elbow ring pushed, which carries the flange-like metal ring (10), which also has 4 screw holes, the fit exactly on the aforementioned. After inserting the rubber service ring (8) with screw holes with the help of the screws (18) the counterpart (14) provided with an internal or external thread is attached.

Also in Pig. 7 the insert socket with external thread and collar is used again. In this case, the Bund a molded rubber piece in the shape of a ring, which is attached to the rubber hose piece (7) in Pig. 1 and 2 corresponds. Over the Fig. 1 and 2 corresponding metal part (4) is pushed, the through the screwed-in ring (3) that is attached to the same part in Pig. 1 and 2, is attached. "

9 shows a molded rubber piece provided with a hose thread (23) (22) pushed or screwed onto a metal hose (26) »From the hose side, the one that was pushed on before is now Metal part with internal thread (21) pushed onto the molded rubber piece (22) by pressing until it touches the system (27) is firmly attached. The whole thing is then screwed in the; the part (3) in Pig. 1 and 2 corresponding metal ring (3) inseparable, sealing and insulating with one another solidifies ^

Claims (1)

it T η RA.077 737 * 13.2.65 Claim ^ Electrically insulating pipe adapter, thereby characterized in that a hose-like piece of pipe made of non-conductive material (e.g. rubber or synthetic rubber) forms a seal and is pressed in in an electrically insulating manner between the main parts (3, 4, 5 and 6).