DE202011052277U1 - Fitting for a side branch - Google Patents

Abstract

Fitting (1) for a side branch on a main pipe (2), which has an inner (2.1) and an outer wall surface (2.2), for arrangement in an opening (3) in the wall (2.3) of the main pipe (2) a holding section (4.1), an adjoining sealing section (4.2) and an adjoining attachment section (4.3), characterized in that the holding section 4.1) on the inner wall surface is supported (2.1) and the attachment section (4.3) a first (4.3 .1) and a second fastening means (5), with which the support on the outer wall surface (2,2) takes place.

Description

The invention relates to a fitting for a side branch on a main pipe, furthermore the side branch on a main pipe and a pipe system with at least one side branch.

Pipe systems used to contain, store and conduct fluids are generally complex structures where side branches are to be installed in order to be able to feed the fluid from a main pipe to a secondary pipe.

For example, so-called T-pieces are known from the prior art, which are inserted at the point at which the side branch is installed in the main pipe separated there and thus ensure the supply of the secondary pipe.

This insertion of tees is complex, error-prone and costly.

The transection of the main pipe is often undesirable, as this may result in subsequent sealing problems.

It is also known that for the production of branches of pressure lines made of metal or plastic, for example for drinking water or gas supply or in the heating area, usually T-pieces or tapping sleeves are installed. In both cases, these are complex, comparatively large and expensive components.

Depending on the design of the fittings or the method for producing the branches, the main line can either remain in operation, which is then under pressure, or must be emptied before starting work.

It is also known that T-pieces or tapping clamps are welded to the main line or mechanically connected to this.

In general, however, the assembly is usually complicated and lengthy, error-prone and entails high costs.

This is where the invention, which has set itself the task of specifying a fitting for a side branch on a main pipe, which is simple in construction, can be installed in a simple manner and can be mounted in a fluid-tight manner in a secure manner.

In particular, the installation of such a fitting on a construction site under the prevailing conditions is the focus.

The object of the invention is achieved with a fitting for a side branch on a main pipe according to claim 1.

According to the invention, it has been recognized that a fitting for a side branch on a main pipe having an inner and an outer wall surface, wherein the fitting is arranged in an opening in the wall of the main pipe, a holding portion, a sealing portion adjacent thereto and adjacent thereto Attachment section has.

The fitting according to the present invention is characterized in that the holding section is supported on the inner wall surface and the fixing section has a first and a second fastening means, with which the support takes place on the outer wall surface.

With such a fitting for a side branch according to the invention, a side branch can be installed on a main pipe in a simple and reliable manner, whereby the side branch is fluid-tight and only the fitting itself and the installation of the fitting cause low costs.

It has proved to be very advantageous in the context of the present invention if the main tube contains polymer material or consists of polymer material, wherein the polymer material is a polyolefin, in particular a polypropylene or a polyethylene and particularly preferably a cross-linked polyethylene.

A main tube containing polymeric material or made of polymeric material is durable, inexpensive, flexible, and generally inert to the vast majority of fluids to be taken.

In particular, can be in a main tube containing polymer material or consists of polymer material, easily create a breakthrough in the wall.

The breakthrough in the wall of the main tube, which contains polymer material or consists of polymer material, is particularly preferably produced by drilling or punching or cutting.

The breakthrough can also be generated in a laser-assisted process or by water jet cutting.

Breakthroughs which have a circular cross-section are particularly preferred since a fitting for a side branch, which likewise has a circular cross-section, does not need to be further aligned with its location during installation.

It has proved in the context of the present invention to be advantageous if the breakthrough in the wall of the main pipe has a smaller dimension than the corresponding dimension of the fitting to be arranged in the breakthrough or the portion of the fitting which is to be arranged in the breakthrough.

Typically, for this purpose, the diameter of the opening in the wall of the main pipe can be selected smaller by about 10% than the corresponding dimension of the fitting to be arranged in the opening or of the section of the fitting to be arranged in the opening. In this case, it is particularly preferred if the diameter is selected to be smaller between 5 and 15% than the corresponding corresponding dimension.

The fitting itself has a holding section, an adjoining sealing section and an adjoining attachment section.

It is particularly advantageous if the holding portion has a contact surface which corresponds approximately to the shape of the inner wall surface on which it can be applied.

A holding portion with such a contact surface is particularly suitable for keeping the fitting in the opening in the wall of the main pipe.

In this context, it is particularly favorable if a protruding element is arranged on the contact surface of the holding section.

As a projecting element in this context, a spinous process, a wedge-shaped extension, a wedge-shaped web or the like is suitable.

With the projecting element on the abutment surface of the holding portion, it is quite possible to fix the holding portion on the inner wall surface of the main pipe, in which the protruding element is pressed into the inner wall surface of the main pipe during installation of the fitting for a side branch.

As a result, the holding portion of the fitting is fixed to the inner wall surface of the main pipe in terms of its position in a particularly favorable manner and so against movement, in particular shifts, secured.

As stated above, a sealing portion adjacent thereto is provided on the holding portion on the side branch fitting of the present invention.

In this context, it is particularly preferred if a rib and / or a sealing element is / are provided on the sealing section.

A sealing portion with a rib has very favorable sealing properties to fluid-tightly connect the fitting to the main pipe.

The wall of the main pipe lays in the breakthrough especially close to the rib of the seal section.

Particularly advantageous is a rib on the sealing portion, which has a protruding edge.

With a protruding edge, which is inclined for example in the direction of the tube lumen, a particularly good sealing property of the fitting is achieved, and thus can be accomplished with a particularly secure fit of the fitting in the wall of the main pipe.

It is within the scope of the present invention also possible that the protruding edge is aligned at the rib on the sealing portion so that it faces away from the lumen of the main pipe.

In the context of the invention may further be provided that a sealing element is provided on the sealing portion.

Particularly preferred is a sealing ring, which is preferably positioned at the transition between the sealing portion and the holding portion of the fitting for a side branch.

A gasket as a sealing element seals particularly strongly when it is deformed during the installation of the fitting for a side branch on the main pipe by a pressure and fills any gaps between the fitting and the opening in the main pipe. Very advantageous for this purpose, a sealing ring in the form of an O-ring can be used.

In the context of the present invention, it is also possible that different types of seals, in particular seals with a more flat cross-section, are used as the sealing element on the sealing section of the fitting.

In particular, a flat gasket at the transition of the sealing portion for Holding section are used, which creates the necessary sealing effect during installation of the fitting.

In addition to an excellent sealing effect in this case a particularly secure fit and a particularly secure fixing against a possible withdrawal of the fitting from the opening of the main pipe is achieved.

The fitting has, as described above, on the sealing portion on an adjacent thereto attachment portion.

It is very advantageous here if fastening means are provided on the fastening section, wherein according to the invention a distinction is made between a first and a second fastening means.

In this case, it has proved to be particularly favorable when the first and second fastening means are configured in the form of a threaded nut which can be screwed onto an external thread and which has an internal thread.

When a nut can be screwed onto an external thread, the attachment of the fitting for a side branch can be carried out particularly well.

Furthermore, such a compound is also subsequently solvable to replace the fitting to clean or otherwise inspect.

In another embodiment of the invention can be provided that the first and second fastening means are formed in the form of a fixable in a groove clamp.

A clip that can be fixed in a groove can be installed and uninstalled in a very simple manner.

Again, the fitting can be replaced after uninstalling the clip.

In a further favorable embodiment of the invention, it can be provided that a spring which can be fixed in a groove is provided as first and second connection means.

Again, the same advantages as described above in the clip result.

It can also be provided, in a favorable embodiment of the invention, to form the first and second fastening means in the form of a wedge which can be fixed in a groove.

The interchangeability, as described above, is also given in this nut / wedge solution.

A slot / wedge solution is quick to install and inexpensive.

Finally, it can also be provided in the context of the present invention that a multi-latch connection is formed in the first and second fastening means.

A multirast connection in this context may be similar to the technique used in a cable tie.

In all the fastening techniques listed above, a disc or a component adapted to the shape of the wall surface of the main pipe can also be positioned such that it absorbs forces of the fastening means and forwards them to the main pipe.

It goes without saying that the fitting has a free passage, which establishes the fluid connection between the main pipe and the secondary pipe.

The fitting may be made of metal, or contain metal, or be made of polymeric material, or contain polymer material.

Such fittings are simple and inexpensive to produce, according to the choice of the manufacturing material inert against the fluids to be selected and durable.

In particular, the production of a fitting containing or consisting of polymer material can be done very advantageously by injection molding, since large quantities can be manufactured here in a simple and reproducible manner.

The cross section of the fitting can be chosen arbitrarily, but is preferably a circular cross section, wherein the fitting is rotationally symmetrical, since such a fitting is easier to manufacture and easier to install than when providing a different cross section and a different symmetry.

The solution to the problem of specifying a side branch on a main pipe is carried out according to claim 9.

In the context of the invention it has been recognized that a side branch on a main pipe can be realized very advantageously with a fitting as described above.

The solution of the problem to provide a pipe system having a main pipe with at least one side branch according to the above description is carried out according to claim 10.

The invention may be used to advantage in fluid intake, storage and delivery systems.

In the context of the invention described above, fluids include air, gases, water and other liquids, as well as emulsions and suspensions.

The invention can thus be used in systems in water installation, in particular in drinking water installations, in domestic installations, in industrial installations, in pneumatic installations, in gas installations and in particular also in installations for heating systems.

Most preferably, the invention is to be used in surface heating.

There are, for example, heat exchanger mats, consisting of retaining structures and attached heat exchanger tubes installed in accordance with surfaces to be heated. In this case, the heat exchanger tubes preferably run essentially parallel to one another and transversely to the main distribution lines / manifolds.

The fittings according to the invention are used to produce the branches of the heat exchanger tubes from the main distribution / manifolds.

The Hauptverteil- / manifold has compared to the heat exchanger tubes on a larger diameter.

With the fitting according to the invention, the connection of the heat exchanger tubes can be made with the Hauptverteil- / manifold in a simple and fast way.

The fluid-tight, durable and safe connection of the heat exchanger tubes to the Hauptverteil- / manifolds is guaranteed.

The invention also has the following advantages:
The distance between the individual branches on a main pipe can be reduced compared to solutions from the prior art, furthermore, the distance of the heat exchanger tubes from each other can also be reduced. The laying speed can be increased, the laying accuracy can also be increased, with the inventive technique, the safety is improved, furthermore, so that the free-space temperature control can be realized on large areas.

The technique according to the invention is suitable for use under site conditions.

Advantageously, the invention can also be used in branch pipes, drainage pipes, pipes, in particular for use as geothermal pipes and geothermal probes, geothermal collectors or pipes, for the storage and recovery of heat in deeper layers of the earth; Geothermal heat pipes with geothermal collectors or surface collectors, for the operation of heat pumps, for use in building cooling, such as concrete core temperature control.

Furthermore, in pipes for the storage and conduction of heat in solar collectors, for the operation of heat pumps, such as the use of latent heat, pipes and pipelines for heat transfer and / or for heat recovery, such as heat pipes, heat pipe, heat transfer tubes, refrigerant piping and refrigerant channels ,

Also with pipes for water pipes, z. As pressure pipes, pipes for construction, piping for ventilation and air conditioning, piping, especially gas, air, steam, liquid and water pipes, heat exchange pipes, pipes for heat, refrigeration, ventilation and heating technology for the house and sanitary technology, for process engineering, for the chemical and petrochemical industry, for the steel, metallurgical and glass industry, for mining, for the power plant industry, for conventional power plants and for nuclear power plants, for the food industry, for power and working machines, for land vehicles and for ships, the invention can be used advantageously.

• 1. Nach der Erzeugung des Durchbruchs im Hauptrohr, was durch Bohren, Stanzen, Schneiden oder ein lasergestütztes Verfahren oder mittels Wasserstrahlschneiden erfolgt, kann der Fitting von außen in den Durchbruch eingedrückt und in der richtigen Weise positioniert werden, dazu kann das Material des Rohres zunächst aufgeweitet werden. Da Polymermaterialien, und insbesondere vernetztes Polyethylen, ein so genanntes Formgedächtnis aufweisen, das heißt nach Dehnung in ihre ursprüngliche Form zurückkehren, ist der gedehnte, aufgeweitete Durchbruch im Hauptrohr nach kurzer Zeit wieder in etwa auf das Maß des ursprünglich eingebrachten Durchbruchs relaxiert, danach erfolgt dann die Befestigung des Fittings am Hauptrohr unter Nutzung des ersten und zweites Befestigungsmittels. Es ist auch möglich, den Fitting ohne vorheriges Aufweiten des Durchbruchs im Hauptrohr in den Durchbruch einzudrücken, wobei der Durchbruch auf das maximale Querschnittsmaß des Abschnitts des Fittings aufgeweitet wird, der den Durchbruch durchdringt.
• 2. Der Ablauf der Installation ist zunächst analog zu 1. Hier wird allerdings der Fitting von innen in den Durchbruch im Hauptrohr eingepresst. Durch das Formgedächtnis des Polymermaterials des Hauptrohrs erfolgt auch hier wieder eine Verengung des Durchbruchs in etwa auf das ursprünglich hergestellte Maß, nach der Befestigung des Fittings wird die fluiddichte Einbindung hergestellt. Auch hierbei ist es möglich, den Fitting ohne vorheriges Aufweiten des Durchbruchs im Hauptrohr in den Durchbruch einzudrücken, wobei der Durchbruch auf das maximale Querschnittsmaß des Abschnitts des Fittings aufgeweitet wird, der den Durchbruch durchdringt.

The fitting for a side branch on a main pipe can be installed according to the following procedure:

• 1. After the production of the break-through in the main pipe, which is done by drilling, punching, cutting or a laser-assisted process or by means of water jet cutting, the fitting can be pressed from the outside into the opening and positioned in the right way, this can the material of the pipe first be widened. Since polymer materials, and in particular cross-linked polyethylene, have a so-called shape memory, that is to say return to their original shape after stretching, the stretched, expanded opening in the main tube is relaxed again after a short time to approximately the extent of the originally introduced breakthrough, after which it takes place the attachment of the Fittings on the main pipe using the first and second fasteners. It is also possible to press the fitting into the aperture without first widening the aperture in the main tube, widening the aperture to the maximum cross-sectional dimension of the portion of the fitting which penetrates the aperture.
• 2. The sequence of the installation is initially analogous to 1. Here, however, the fitting is pressed from the inside into the opening in the main pipe. Due to the shape memory of the polymer material of the main pipe also here again a narrowing of the opening in about the originally produced measure, after the attachment of the fitting, the fluid-tight integration is made. Again, it is possible to depress the fitting into the aperture without prior widening of the aperture in the main tube, widening the aperture to the maximum cross-sectional dimension of the portion of the fitting which penetrates the aperture.

The present invention will be explained in more detail with reference to the accompanying drawings.

Show:

1 a side view of the fitting according to the invention, which is partially cut;

2 a cross section through the provided with an opening main pipe;

3 a cross-section through the main pipe with the opening arranged in the fitting, wherein the fitting in a plan view, which is partially cut, is shown.

In 1 is the fitting according to the invention 1 in a side elevational view, partially sectioned.

At the fitting 1 is on the fitting body 4 a holding section 4.1 formed, adjacent to this a sealing portion 4.2 , and adjoining thereto a mounting portion 4.3 ,

The holding section 4.1 has a contact surface 4.1.1 which is oriented so that they are in a breakthrough in the arrangement of the fitting 3 of the main pipe 2 to the inner wall surface 2.1 of the main pipe 2 has.

The contact surface 4.1.1 is designed such that it is approximately complementary to the shape of the inner wall surface 2.1 corresponds to where this can be applied.

At the holding section 4.1 is still an approximately in the direction of the axis of the main pipe 2 formed conically tapering spout.

This is preferred for fluidic reasons.

At the contact surface 4.1.1 of the holding section 4.1 is an element 4.1.2 trained in that 1 is shown in the form of a pointed wedge-shaped tapered tooth.

Furthermore, at the transition of the holding section 4.1 to the sealing section 4.2 a sealing element 4.2.1 arranged in the 1 is designed as an O-ring seal.

The holding section 4.1 adjacently arranged sealing portion 4.2 is substantially cylindrical and carries on the surface of several ribs 4.2.2 ,

Ribs 4.2.2 on the surface of the sealing portion 4.2 improve the sealing properties of the breakthrough 3 of the main pipe 2 arranged fittings 1 ,

The sealing section 4.2 is adjacent to the attachment portion 4.3 ,

The attachment section 4.3 is in 1 shown essentially cylindrical, wherein the attachment section 4.3 an external thread as the first fastening means 4.3.1 is shown.

The first attachment 4.3.1 in the form of an external thread on the attachment portion 4.3 acts - as in 1 shown - with the second fastening means 5 , which is shown in the form of a threaded nut with an internal thread, and puts the fitting together 1 in the breakthrough 3 of the main pipe 2 firmly.

Not shown in 1 is that the fitting 1 having a free passage, with which a fluid-tight connection between the lumen of the main pipe 2 and the lumen of a secondary pipe, not shown here can be produced.

That in the 1 not shown sub-pipe can via a connecting portion on the fitting 1 , which is also not shown here, to be connected.

As a connecting section on the fitting 1 own for this purpose known from the prior art connection techniques, such as a hose nipple, a screw, a press connection, a sliding sleeve connection or the like.

The 2 shows in a lateral cross-sectional view of the main pipe 2 in the wall 2.3 a breakthrough 3 is generated.

The main pipe 2 has an inner surface wall 2.1 and an outer surface wall 2.2 on.

In 3 is in a side sectional view of the main pipe 2 shown in its breakthrough 3 the fitting 1 is arranged and fixed.

The fitting 1 is here shown in a lateral plan view, with a part being cut.

The fitting 1 has a holding section 4.1 on, whose contact surface 4.1.1 on the inner surface wall 2.1 of the main pipe 2 is applied.

To secure the system of the contact surface 4.1.1 of the holding section 4.1 on the inner surface 2.1 of the main pipe 2 has the contact surface 4.1.1 an element 4.1.2 , shown here in the form of a tooth, on which, in the inner surface wall 2.1 of the main pipe 2 has penetrated.

This is a non-shift position of the fitting 1 in relation to the main pipe 2 reached.

The tapered grommet on the holding section 4.1 points to the axis of the main pipe 2 ,

At the transition from the holding section 4.1 to the sealing section 4.2 of the fitting 1 is a sealing element 4.2.1 arranged, which is in the form of an O-ring.

In the 3 is shown for this purpose that the sealing element 4.2.1 in the form of an O-ring at the transition between the holding section 4.1 and sealing section 4.2 is deformed, there by fixing the fitting 1 in the breakthrough 3 of the main pipe 2 Press forces on the element 4.2.1 act.

This will seal the fitting 1 in the breakthrough 3 of the main pipe 2 accomplished.

At the sealing section 4.2 are still several ribs 4.2.2 formed with the wall 2.3 of the main pipe 2 the seal of the fitting 1 to ensure.

At the sealing portion 4.2 of the fitting 1 is a mounting section 4.3 adjacently located in the 3 has a substantially cylindrical configuration.

At the attachment section 4.3 is the first fastener 4.3.1 formed an external thread.

The external thread 4.3.1 at the attachment section 4.3 acts with the second attachment means 5 , which is formed here in the form of a threaded nut with an internal thread together.

The second attachment 5 in the form of a threaded nut is in 3 placed in such a position that the mother partially on the outer wall surface 2.2 of the main pipe 2 is applied.

The installation of the threaded nut 5 is chosen such that the contact surface 4.1.1 of the holding section 4.1 is brought into abutment with the inner wall surface of the main pipe 2 ,

This is the fitting 1 fluid-tight in the breakthrough 3 the wall 2.3 of the main pipe 2 established.

A fluid from the lumen of the main tube 2 can through the passage of the fitting, not shown here 1 flow into the side pipe, not shown here.

LIST OF REFERENCE NUMBERS

1

fitting

2

main pipe

2.1

inner wall surface

2.2

outer wall surface

2.3

wall

3

breakthrough

4

fitting body

4.1

holding section

4.1.1

contact surface

4.1.2

element

4.2

sealing section

4.2.1

sealing element

4.2.2

rib

4.3

attachment section

4.3.1

first attachment means

5

second fastening means

Claims (10)

Fitting ( 1 ) for a side branch on a main pipe ( 2 ), which has an inner ( 2.1 ) and an outer wall surface ( 2.2 ) for placement in a breakthrough ( 3 ) in the wall ( 2.3 ) of the main pipe ( 2 ), with a holding section ( 4.1 ), an adjoining sealing portion ( 4.2 ) and an adjoining attachment section ( 4.3 ), characterized in that the holding section 4.1 ) is supported on the inner wall surface ( 2.1 ) and the attachment section ( 4.3 ) a first ( 4.3.1 ) and a second fastening means ( 5 ), with which the support on the outer wall surface ( 2.2 ) he follows. Fitting ( 1 ) for a side branch according to claim 1, characterized in that the main pipe ( 2 ) Polymer material or consists of polymer material, wherein the polymer material is a polyolefin, in particular a polypropylene or polyethylene, and particularly preferably a crosslinked polyethylene. Fitting ( 1 ) for a side branch according to claim 1 or 2, characterized in that the breakthrough ( 3 ) in the wall ( 2.3 ) of the main pipe ( 2 ) is smaller than the corresponding measure of the breakthrough ( 3 ) fittings ( 1 ) Fitting ( 1 ) for a side branch according to one of the preceding claims, characterized in that the holding section ( 4.1 ) a contact surface ( 4.1.1 ) which has approximately the shape of the inner wall surface ( 2.1 ) corresponds to which this can be applied. Fitting ( 1 ) for a side branch according to claim 4, characterized in that at the contact surface ( 4.1.1 ) of the holding section ( 4.1 ) a salient element ( 4.1.2 ) is arranged. Fitting ( 1 ) for a side branch according to one of the preceding claims, characterized in that the sealing section ( 4.2 ) a rib ( 4.2.2 ) and / or a sealing element ( 4.2.1 ) is / are provided. Fitting ( 1 ) for a side branch according to one of the preceding claims, characterized in that the rib ( 4.2.2 ) has a protruding edge. Fitting ( 1 ) for a side branch according to one of the preceding claims, characterized in that the first ( 4.3.1 ) and second fastening means ( 5 ) in the form of a screwed onto an external thread nut or in the form of a fixable in a groove clamp or in the form of a fixable in a groove spring or in the form of a fixable in a groove wedge or in the form of a multi-latch connection. Side branch on a main pipe ( 2 ) with a fitting ( 1 ) according to one of claims 1 to 8. Pipe system with at least one main pipe ( 2 ) with at least one side branch according to claim 9.

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