DE6950149U - COMPENSATOR, IN PARTICULAR JOINT COMPENSATOR. - Google Patents

Description

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! Karlsruhe, December 22nd, 1969

INDUSTRIE-WERKE KARLSRUHE Aktiengesellschaft

75 Karlsruhe 1 Gartenstrasse 71

Comnenaator. In particular, joint commander

The invention relates to a compensator, in particular an articulated compensator "for accommodating and for equalizing angular changes in pipelines" which is bounded on both sides by a connecting flange and in its interior with a calibration pressure- and liquid-tight extending between the connection flanges and resistant to corrosive and / or aggrealve media to be transported in the pipelines pipe or the like. is provided.

In the German patent application P 19 45 323.7y> mrde already a compensator for absorbing and compensating for angular changes in pipelines is proposed »which is

tall bellows or the like «are connected to one another, being axially parallel -A plastic pipe around the bellows that is resistant to the corrosive and / or aggressive medium to be transported in the pipelines or the like. is arranged.

The compensator proposed in the aforementioned patent application is essentially characterized in that the shafts or turns of the bellows dd.d the like attached with its ends to the limiting and connecting flanges. are under tension in such a way that they lie against each other, sioh in the case of changes in angle as a result of their cross-son training so roll on each other that a particularly radial deflection of the arranged aohparallel to the bellows inside the device Tube is avoided under pressure of the medium and the interior of the bellows together with the tube is used as a pressure chamber for a device for controlling the internal pressure may be formed can.

Such Kompenaatoren have the characteristic that their Bellows are connected directly to the pipeline via chippings, i.e. a modified part of the pipeline itself form. It is evident that such limbs should not only be t high mechanical »but above all high chemical Are exposed to stress. This latter bean. Stresses are of particular importance when the pipelines are constantly carrying media that are strong act corrosively and / or aggressively, for example corrosive. gen or the like.

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In order to achieve these and similar ones, including the lifespan of the Compensators of influencing factors have already been proposed, uen bellows of an expansion compensator to accommodate of length changes eier pipelines made of corrosion-resistant material, z. 3. Plastic, such as tetrafluoropolyethylene to manufacture.

Although this material is known to have a number of extraordinary properties positive traits inherent, there is certainly no question of whether it is on the other hand, especially with constantly high mechanical stress as a result of arythmically recurring load changes or the like, also certain limits are set. For this there is also the fact that such bellows made of tetrafluoropolyethylene are extremely expensive and their use from this point of view as well is limited. It is conceivable to use such bellows in special cases; for industrial series production but they are initially disregarded for the reasons given.

Elastic pipe connectors have also been proposed in the form of bellows made of rubber or rubber-like plastics with embedded reinforcing inserts, the ends of which were designed as angled bulges, around them in this way by means of special flange rings on the pipe ends

to fix. Apart from that this is proposed Güinmi bellows to protect against electrostatic charges to meet the requirement of having a minimum electrical conductivity, they only have a relatively short lifespan, despite their chemically resistant inner layer, because rubber the unpleasant but unavoidable accompanying characteristic of aging. The aging process will have a considerable influence on the service life, especially if the rubber bellows on the one hand is under high pressure and on the other hand the media to be transported through the pipelines are at high temperature.

A compensator provided with a metallic bellows, in the interior thereof, in particular, has also already been proposed a substantially coaxially extending plastic pipe is arranged in the region of the bellows. According to this well-known suggestion " is to be achieved with the arrangement of the plastic pipe in the interior of the bellows, the pipeline in the area of the interposed. To protect compensators against corrosive media. The reason for this solution was, it was stated, the fact that the so-called sheet metal aprons used up to that point, which cover the bellows cover from the inside, have been destroyed by the corrosive influences of the media transported in the pipelines. The , Insofar the proposed plastic apron consists of a fabric, e.g. glass fabric with synthetic resin coating or overlay {

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made of thermally hardenable or self-hardening plastic. Age- ■ According to the well-known proposal, an apron was also naturally considered, which alternated between several layers of fabric and synthetic resin exhibited.

May have been though already reached an optimal training with this known solution, then, it is more or less just to accommodate and compensate for changes in ^length; but by no means also suitable for taking up and compensating for changes in the angle of the compensator. '

The proposed invention has set itself the task of maintaining the tried and tested plastic pipe structural design of a to accommodate and allow compensation; of angle changes suitable joint compensator not only! further training, but also to simplify as much as possible, without, however, affecting the service life and / or serviceability;

j would be shortened or decreased. ^ί \

According to the invention, this object is achieved in that the ' End flanges with mirror images of one another,! widening towards the middle of the compensator in a bell-shaped manner! Pieces of pipe are firmly connected, which are common to one of them roll assigned and corresponding to the bell radius formed central member, which in the case of operation the plastic pipe arranged inside the compensator or the like]

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on this (sled.

In the proposed invention, particular care was taken with the structural and structural design of the compensator belonging central limb is used:

According to one feature of the invention, "is the central link from a ring, the exterior of which is essentially the shape of a Ball section has, while according to a further feature, the interior of the ring is provided with a cylindrically shaped passage, the diameter of which is larger than der.dee Plastic tubes that are not subjected to internal pressure

The proposed invention has a number of advantages:

The expansion joint is definitely simple in construction. It also gets by with a relatively small number of individual parts, without, however, its operational and puncture safety, for example would have to be questioned by wear and tear or the like.

It is extremely advantageous in the case of the invention Compensator also that it is extremely short and therefore, Little space required, especially when installing or removing in a pipeline system. . ·. · '-' _ ·

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Due to the bell-shaped shape of the tubular piece firmly connected to the connecting flanges and duroh the shape of the central ring member corresponding to the bell parts the compensator can absorb flexing movements within relatively wide limits and safely compensate them, which in turn ensures a long service life.

In the drawing, the invention is based on an embodiment / depicted without exhausting oneself in this alone; the drawing shows the side view of the joint compensator according to the invention, the upper half of which is shown in section is.

In the drawing, the joint Korapensator is in its entirety _; called 10. In detail, the joint compensation consists of

sator from the two connection flanges 11, 11a and the Ii these |

Flanged joint members 12, 12a, which together with |

the hinge pin 13 is the actual flexion-pale joint of the j

i ! Compensators 10 form. I.

On the inside of each one. Connection flanges 11, 11a are mirror images of one another and look towards the center of the Koiapensatör, tubular sections widening approximately in the shape of a bell 14, welded on, among others.

635014922.3.73

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The inner radii of the bell-shaped tube enlargers are in such a way "that, in the case of diffraction, they are on them jointly assigned and correspondingly trained central Member, such as the ring 15, able to roll off.

During operation, i.e. when inside 10a of compensator 10 and the pipelines adjoining these on both sides, but not shown, are liquids under pressure be promoted., this is against corrosive and / or aggressive Media-resistant plastic pipe 16 by virtue of its inherent elasticity in the area of the center of the joint partly on the inner radii of the bell-shaped expanded pipe sections 14, 14a and to the the other (larger) part of the cylindrically shaped passage 15a of the ring 15. The passage 15a is for the purpose the absorption of the work of deformation of the plastic pipe 16 so dimensioned so that its diameter is larger than that of the Kunsts1dffrohres not loaded with internal pressure.

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The outer 15b of the central ring 15 has essentially the shape or the cross section of a spherical segment.

The plastic pipe 16 is limited in the direction of its longitudinal axis by the planes 16a, 16b, which when connecting - not - Pipelines have a sealing effect between the pipelines on the one hand and the connecting flanges 11, 11a eng Create GeHenk compensator 10 *

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The first, only experimentally carried out service life tests with the joint compensator 10, resulted in a load fluctuation number that was higher with angular deflections in the order of magnitude of £ 7.5 ° ... 10 ° and with an average internal pressure of around 18 kp / cm than five times that required.

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69501A9 March 22, 73

Claims (3)

* ♦ I »# - 10 - nsprohe 1. compensator, in particular joint compensator for receiving as well as to compensate for angular variations in pipes, on both sides by a respective connecting flange and has extending in its interior with an extending between the connection flanges' ■ the pressure and liquid-tight and against in the pipes to transporting corrosive and / or aggressive media-resistant plastic pipe or the like is provided , '■ I characterized in that j that the connecting flanges (11, 11a) with one another mirror-like! figuratively formed pipe pieces (H, 14a) which expand to the center of the compensator approximately ■ are firmly connected, which are formed on a central portion which is jointly assigned to them and corresponds to the bell radius. Roll off the link (15), in the case of operation the inside (10a) of the compensator (10) arranged plastic pipe or the like. (16) attaches to this member. ' 2. Compensator according to claim 1,
characterized by $ that the central member (15) consists of a ring, the exterior of which is essentially the shape of a spherical section (15b) has. - '"r .. - 11 - - 11 - 3. Compensator according to claim 1 and 2,
marked by that the ring interior is essentially provided with a cylindrically shaped passage (15a), the diameter of which is greater than that of the plastic pipe (16) which is not subject to internal pressure *