DE3011470C2 - Repair clutch - Google Patents

Description

Interlocking, through front butt with engagement elements, through outer flange, through snap connections or in any other way, for example even in the form of a pipe connector. The connection of the two sleeve halves can also be achieved by an outer flange, for example a wedge flange in Connection with a wedge clamping ring.

The sealing of the two socket parts against one another in the separating tendon can, depending on the requirements of the In individual cases in a manner known per se in the presence or absence of additional sealing elements take place. For example, the seal is made by inserting rubber-elastic sealing rings, in particular O-rings.

An advantageous variant provides that instead of the O-ring in the sealing surfaces lying in the parting plane the flanges are formed with annular grooves which are manufactured by direct injection (injection molding or Compression molding) an uncrosslinked rubber compound and subsequent crosslinking in situ with a rubber seal, which is slightly on each half protrudes beyond the parting line by networking The rubber compound in situ can create a strong, permanent chemical bond between the in situ crosslinked Rubber compound and the plastic from which the sleeve halves are made, and thus an excellent one Seal, can be achieved. In this embodiment of the socket sleeve, despite the interposition of a rubber-elastic sealing compound, the requirement of a third Part, namely the O-ring serving as a seal, can be bypassed.

The inside diameter of the sealing elements on the two end faces of the two-part sleeve is shown in As a rule, be the same size on both sides of the sleeve. Obviously, however, this is by no means absolutely necessary. Rather, with different The repair coupling can also be used as a reducer with diameters on both ends of the sleeve. It is only decisive that the two differently dimensioned sleeve halves are designed to be complementary in the parting plane and can be connected tightly to one another.

In principle, the material from which the pipes or pipe ends to be connected are made of is irrelevant exist. For example, the spigot ends to be connected can be made of plastic, mineral Materials or metal.

The use of the repair clutch is briefly explained below:

It is assumed that a branch piece is to be used in an unbranched, permanently installed pipeline. For this purpose, a section of a pipe section is first cut out of the unbranched pipe, the axial length of which is practically the same as the axial length Length of the branch piece to be used corresponds to or is slightly larger than this. After removing the cut-out section of the pipe section, one half of the repair coupling becomes with the section of the provided with a sealing ring or a corresponding sealing element Socket opening, pushed first onto the exposed spigot end of the permanently installed pipeline. Simultaneously the complementary part of the two-part sleeve sleeve is pushed onto the spigot end of the branch piece to be inserted in a corresponding manner with the sealing ring inserted. The two socket parts are pushed so far on the two spigot ends that the parting plane surface of each of the two socket parts in the is essentially in the plane of the open face of the two spigot ends

In the same way, on the opposite spigot end of the branch piece and on the opposite free spigot end of the fixed pipe two mutually complementary sleeve halves pushed on. Then the junction with Equipped with the two attached sleeve parts axially aligned between the two also with sleeve parts ten free-standing spigot ends of the permanently installed pipeline device inserted The respective opposing sleeve halves of the repair coupling that are assigned to one another of the invention are then pushed axially towards one another until they are firmly aufeinan in the parting surfaces lying there. It is even with symmetrical in the Hül se arranged parting plane the sleeve sleeve as a whole put together and shifted so that the parting plane does not coincide with the gap plane between the two spigot ends. Rather, the parting plane lies of the two sleeve halves on one '->. he two spigot ends. Despite the symmetrical division, the socket sleeve so overall not symmetrical to the gap plane between the two coaxially aligned with one another at the end opposite spigot ends, but axially to it postponed. This arrangement increases the mechanical shear strength of the repair coupling, with supporting inner ring ribs, achieved This supporting inner annular ribs in the area of the parting plane of the sleeve parts, promote that they form support rings for the spigot ends to be connected, the shear strength of the repair coupling.

After joining the sleeve halves in the parting line, depending on the design of the sealing and connecting means made the sealing connection of the sleeve parts to form the coherent sleeve. For example, a self-sealing snap connection can be engaged or a clamping ring around a flange, for example around a

Wedge flange a wedge clamping ring.

The invention is described in more detail below using an exemplary embodiment in conjunction with the drawing It shows the only figure, namely the F i g. 1 in axial section an embodiment of the Invention.

The in the F i g. Repair coupling 1 shown in FIG. 1 consists of two identical sleeve parts 2, 3. The sleeve parts 2, 3 are made of glass fiber reinforced plastic and face each other at their two overlying open end faces 4, 5 annular grooves 6, 7 to accommodate sealing rings, not shown in the figure. The purpose of the sealing ring inserted into the annular groove 6 before the sleeve part 2 is slipped onto the spigot end has the task of ensuring that the in the F i g. 1 also not shown inserted spigot end on its outer jacket against the inner wall of the sleeve half 2 hermetically against the outer and to seal internal pressure. The same applies to the opposite sleeve half 3.

In the parting plane 8 which separates the sleeve halves 2, 3 in a complementary manner, the sleeve half 3 is provided with an outer flange 9 and the sleeve half 2 is provided with an outer flange 10. Both sleeve halves are in the Parting plane 8 in the area of the flanges 9,10 through a designed as an O-ring sealing ring 11 made of rubber-elastic sealing material hermetically sealed together. The axial clamping force for sealing the Sleeve halves 2, 3 in the parting plane 8 over the sealing

5 6

processing ring 11 is applied in such a way that the axially outward facing surfaces of the flanges 9,

10 wedge-shaped in a manner known per se,

and by a wedge clamping ring 12, which is tangential through

effective clamping means in the sense of a radius reduction - 5> V

tion generates a radial tension, which in turn over · ■;

in the in F i g. 1 way shown together- Il

kenden wedge surfaces the sleeve flanges 9,10 axially below |

Inclusion of the sealing ring 11 presses against one another f] Instead of the clamping ring 12, frontally acting to ''

self-locking latching means, for example latching pins, may be provided, whereby one of two individual parts | existing repair clutch is created, the oh-. ne any further auxiliaries permanent> and dense tube connections from the sleeve type un- 15 \ ter the given conditions, namely in the absence of axial displaceability of the spigot ends to be joined together against each other, enables the production of

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Claims (2)

1 2 resilience of such a repair coupling to patent claims: improve. It is according to the invention to solve this problem 1. Repair coupling intended for a pipe plug connection,
between two socketless spigot ends, with 5 two in a radial parting plane connected to each other 1. each sleeve half on the inner circumferential wall bindable sleeve halves, which in the area of the radial dung with at least one additional support To equip dividing plane against each other as well as in of the dividing ring and level facing away area against the outer wall 2. the sleeve halves in the operating position with their formation of the respective spigot end with a sealing element io radial parting plane relative to the gap plane which are sealed to the element, and the area facing away from the spigot connecting spigot ends axially offset to be arranged on the inner circumference.
wall at least one support ring for each the outer wall of the respective spigot while the first feature allows the angular movement have, characterized in that each 15 times the pipe spigot ends to be connected within Sleeve half (2, 3) is prevented on the inner circumferential wall of the respective sleeve halves at least one additional support ring in the measure specified in the second feature Area of the radial parting plane (8), and the stability of the pipe connector as a whole that the sleeve halves (2, 3) in the operating position 'significantly improved This improvement is straight with its radial parting plane (S) relative to the gap 20 with a view to laying the pipes and the the level of the spigot ends to be connected is axially sets are arranged. where very enormous apex 2. Repair coupling according to claim 1 with acting in and shear loads. Parting plane of the sleeve halves provided ring In contrast to the repair grooves according to the invention, characterized in that the clutch falls into the ring nut in the case of the aforementioned US-PS th a rubber elastic sealant injected 35 89 750 known coupling for a pipe plug bond is the gap plane of the spigot ends to be connected with the radial parting plane of the two sleeve halves th together. This weak point of the pipe connector 30 binding must be through a correspondingly massive connecting device for the two sleeve halves The repair of permanently installed pipelines is prepared, otherwise there is a risk that these especially technical difficulties when the pipe connection with the acting apex pipelines not welded or soldered forces will leak. can. This can be the case, for example, 35 According to a further development of the invention, the two if the material from which the pipes of the lines are preferably completely identical to the sleeve parts of the coupling exist, cannot be welded and cannot be soldered, is designed as a table, whereby the manufacturing costs For example, if it is made of a mineral material, it simplifies the storage problems and the exist, or if for other reasons, e.g. assembly less susceptible to careless or careless wisely for safety reasons, do not use shoes in a shoe-like manner. may be welded or soldered. The repair is as sleeve materials for the coupling can be problematic in particular when a tube-reinforced and unreinforced plastic of all types, reinforced section, is to be replaced as a whole. The advantage and unreinforced hard-set elastomers, metal problem lies in the fact that the materials or combinations of these pipe sections to be inserted into the permanently installed pipeline, for example a new material, are used together.
Adding branch piece, as precisely as possible in the width The sealing elements are generally to be cut to length so that it can be inserted between the two processing rings, including several ends of the fixed pipelines that are axially exposed on each end face, with sealing rings arranged one above the other and made of the least possible elastic axial play. Under the same material, for example lip sealing rings, these prerequisites are those that are otherwise used during the initial installation. The sealing elements can be bar, in which an axial displacement of the spigot is formed in one piece with the sleeve or detachable or the sleeve is required. be inextricably linked to this. The only important thing is. In order to produce a tight connection between the sealing elements in cooperation with two axially aligned and practically without play one inserted spigot end the requirement of the opposing socketless spigot ends is known in a pipe connector known per se (US-PS 35 89 750) who are able to seal the wise. The radial parting plane of the two sleeve halves comprises bare sleeve halves, which in the area of the radial 60 can in principle at any point between the parting plane against each other and in the area facing away from the Trennebe- sealing elements on the one end face and the area facing away from each other against the outer wall of the sealing element on the opposite end the respective spigot end with a sealing element away from the sleeve open on both end faces are cord-sealed, and which face away from the parting plane. Normally, however, the parting plane is axially provided on the inner circumferential wall 65 in the middle of the socket sleeve,
at least one support ring for the outer wall The connection of the two sleeve parts can have on the respective spigot end. varied in nature. Thus, the connection of the invention is based on the object, the shear two sleeve parts for example by tdeskopariiges