DE3120183A1 - Pipeline closure - Google Patents

Abstract

A closure used as a closure of open pipeline ends is equipped with two discs (2, 3) at an adjustable distance and with an O-ring (6), of elastomeric material, arranged in the edge region between the discs. <IMAGE>

Description

^α LEYBOLD-HERAEUS GMBH

Cologne-Bayental

Pipeline closure

When laying pipelines or pipeline systems, it is often necessary to use the free end of a pipe section to prepare for a welding process. This happens z. B. by grinding or sanding, so through machining of the end face of the pipe.

There is a risk that such chips will get into the pipe system and through a subsequent cleaning step can no longer be removed from it. Attempts have been made to contaminate the pipe system to prevent the end of the pipe with a paper stopper before the machining preparation of the welding edges sealed. However, this measure has not proven to be reliable in particular when the subsequent Cleaning step, i.e. the removal of the chips produced during the preparation of the welding edges, with the help of Compressed air was carried out.

The present invention has for its object to provide a pipe closure with which a contamination of a pipe system during the preparation of 30

Chips produced by welding edges can be effectively avoided.

According to the invention this object is achieved by a pipeline closure, which is adjustable by two discs Distance and an O-ring made of elastomeric material arranged in the edge area between the discs is marked. In a pipeline closure designed in this way, the outer diameter of the

2.QJ

O-ring can be changed by changing the distance between the two discs. The discs can inserted with the ring in the retracted position into a pipeline of the appropriate diameter will. By tightening the discs, the O-ring is enlarged radially and against the inner wall of the pipeline pressed, creating a reliable seal and at the same time a mechanical fastening of the entire arrangement is achieved. Appropriately, at least one disc is designed conically in its edge area so that you Distance to the other side increases in the radial direction. This measure ensures an increase in the outer diameter of the O-ring when the distance between the discs is reduced.

The distance between the two panes is changed 20

expediently with the help of a z. B. designed as a screw threaded spindle, which is assigned a crank. If the crank is held and guided in a linkage, then the crank together with the linkage is expedient detachable from the other elements of the pipeline closure so that the crank and the linkage the Do not interfere with preparatory work at the free end of the pipe.

Further advantages and details of the invention will be based on in Figures 1 ι
examples are explained.

based on the embodiment shown in Figures 1 and 2

Figures 1 and 2 show embodiments of the invention Pipe closures for two different pipe diameters.

The parts forming the actual closure 1 are similar to one another. There are essentially two

/ 6

g disc-shaped elements 2 and 3 are provided in their Edge areas have conically shaped sections 4 and 5. The tapered sections 4 and 5 are facing each other, so that there is a groove into which an O-ring 6 can be inserted.

The width of the groove can be changed by means of a threaded spindle-like device. To do this, the Washer 2 has a thread 7 into which an Allen screw 8 can be screwed. The screw 8 takes hold an opening 9 in the disc 3 therethrough. The disc 3

is thereby guided on the screw 8. In the illustrated embodiments, the thread 7, the Screw 8 and the opening 9 of the washer 3 in the axis 11 of the entire system. By twisting the

Screw 8 is the distance between washers 2 and 3 from one another 20

changeable. As a result of the conical sections 4 and and the effect of the inserted O-ring 6 the disks 2 and 3 move apart when the screw 8 is rotated in a corresponding manner. Will the

If screw 8 is turned in the opposite direction, 25 will move

the discs 2 and 3 towards each other. As a result of the conical sections 4 and 5, the O-ring moves 6 radially outwards, thus increasing its outer diameter.

Mutual guidance of the disks 2 and 3 to one another is additionally achieved in that the disk 2 an elevation 12 and the disk 3 one of the elevation 12 has adapted recess 13. In the illustrated exemplary embodiments, there are elevation 12 and depression 13

also formed centrally with respect to the axis 11. At the same time, a stop 10 (FIG. 2) is thereby formed, through which a minimal distance between the disks 2 and 3 is determined.

/ 7

In both figures, the closures 1 are each inserted into a tube 14, 15 of corresponding diameter. At the Exemplary embodiment according to FIG. 1, the disks 2 and 2 are spaced from one another, so that the O-ring 6 has a shape with the smallest possible outer diameter.

The closure 1 is therefore freely displaceable in the tube 14. By tensioning the two disks 2 and 3, the outer diameter of the O-ring increases in a radial direction Direction and is thereby pressed against the inner wall of the pipeline 14. In such a state it is Exemplary embodiment shown in FIG. The pressing of the O-ring 6 against the inner wall of the Tube 15 causes a reliable seal and at the same time a mechanical fastening of the pipe closure.

In order to be able to turn the Allen screw 8 in the inserted state, a crank 16 is provided in each case, which in turn rotatable in a device generally designated 17 and restricted in the axial direction is slidably supported. The devices 17 are each together with the crank 16 with the pipe closure releasably connected.

In the exemplary embodiment according to FIG. 1, there is the holding device 17 for the crank 16 from a pipe section 18 through which the crank 16 passes centrally. Means

Ring disks 19 and 21 and split pins 22 and 23 are the radial and limited axial mobility of the crank 16 ensured. On the disk 3, the end of the tube 18 is a substantially cylindrical section

or stump 24 with an outer groove 25 assigned. The outside 35

groove 25 are perforations or slot openings 26 in the Pipe section 18 assigned so that a mutual locking of the by means of a clamping ring 27 Closure 1 and the crank mounting device 17 is possible.

/8th

31 /

c In the embodiment of Figure 2 there is the crank mounting device 17 from two pipe sections 31 and 32 which are connected to one another via webs 33 and 34. the Web 33 and 34 serve at the same time to hold the crank 16 radially and axially to a limited extent.

The pipe sections 31 and 3 2 are essentially cylindrically shaped sections or sections on the disk 3. Stumps 35 and 36 with external grooves 37 and 38 are assigned. The pipe sections 31 and 32 point at the level of the grooves and 38 perforations or slot openings 39 and 40

g, through which attached to the pipe sections 31 and 32 Clamps 41 and 42 can reach through. Because the clamping brackets 41 and 42 engage in the grooves 37 and 38, a mutual releasable locking of the tube closure 1 and the crank holding device 17 can be achieved will.

In both embodiments there is the possibility of the coupling of crank mounting device 17 and ι Pipe closure 1 after inserting the pipe closure by moving the clamping ring 27 or the suitable To solve the clamping bracket 41 and 42, so that the crank mounting device 17 the processing of the end faces of the Pipes 14 and 15 do not interfere.

~ 3

Blank page

Claims (13)

81.006 LEYBOLD-HERAEUS GMBH Kölη-Bayental Pipe closure
EXPECTATIONS 1 J Pipeline closure, characterized by two discs (2, 3) with adjustable spacing and an O-ring (6) made of elastomeric material arranged in the edge area between the discs. 15th 2. Pipeline closure according to claim 1, characterized in that at least one disc (2 or 3) in its edge area is designed in such a conical shape that its distance from the other Seheibe increases in the radial direction. 3. Pipeline closure according to claim 1 or 2, characterized in that a the minimum distance between the disks (2, 3) determining the stop (10) is provided. 4. Pipeline closure according to claim 1, 2 or 3, characterized in that for Adjustment of the distance between the discs (2, 3) a Threaded spindle (8) is provided. 30th 5. Pipeline closure according to claim 4, characterized in that as a threaded spindle a screw (8) is used, which is in one of the washers (3 or 2} a thread (7) is assigned and which is in a coaxial bore (9) of the other disc (2 or 3) is led. 6. Pipeline closure according to claim 5, characterized in that the head of the Screw (8) is assigned a crank (16). 7. Pipeline closure according to claim 6, characterized in that the crank (16) is held and guided in a device (17) which leads to the screw (8) in a bore (9) Disc (3) is releasably connected. 8. Pipeline closure according to claim 7, characterized in that the device (17) from at least one pipe section (18 or 31, 32) .je exists on which the crank (16) is rotatably supported. 9. Pipeline closure according to claim 8, characterized! marked that the screw (8) | in a bore (9) leading disc (3) at least has a stump (24 or 35, 36) which corresponds to the open 20 Is assigned to the end of the pipe section (18 or 31, 32). 10. Pipeline closure according to claim 9, characterized in that the stump , Through which a (24, 35, 36) has a groove (25 or 37, 38) and the ^{£ 2>} pipe section (18, 31, 32) of this groove associated slot opening (26, 39, 40) resilient wire bracket (27 or 41, 4 2) for releasably locking the device (17) with the crank (16) on the disc (3) equipped with the stump. 11. Pipeline closure according to claim 1O, characterized characterized in that the device (17) consists of at least two pipe sections (31, 32), each of which is assigned a stump (35, 36) on the disc (3) facing the device. / 3 12. Pipeline closure according to one of claims 5 to 10, characterized in that the screw (8) forming the threaded spindle is an Allen screw is. 13. Pipeline closure according to one of the preceding Claims, characterized in that means (12, 13) for mutual guidance to the Disks (2, 3) are provided.