DE7116334U - Pipeline damper - Google Patents

Description

• C *

Yes 1789

Pipeline flap

The innovation concerns a pipeline flap, d'e is rotatably mounted by means of a shaft in a housing intended for installation in a pipeline.

In the case of pipeline valves (throttle or shut-off valves) that are used for high temperatures, there are often considerable difficulties due to the thermal expansion of the individual flap parts To enable such thermal expansions to be stress-free, the valve shaft is usually at one end in one Plague camp and stored at the other end in a floating camp, so that it can expand freely in an axial direction. In doing so, however, the seal ^ proportions changed unevenly on the sealing surfaces between the flap wing and the fixed opposing surfaces provided in the housing. This can be done with large valve diameters lead to considerable leaks, since the spring deflection of the elastic sealing elements is very rare Cases can be chosen so large that the thermal expansion of the flap can be absorbed.

The innovation is therefore based on the task of a To design pipeline flap of the type mentioned in such a way that these disadvantages are avoided.

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According to the innovation, this object is achieved by that rUe shaft of the pipeline flap is limited axially movable mounted and centered in the housing by at least two springs acting in the axial direction in opposite directions is held.

The flap can expand freely in both axial directions in this way and is still through the springs acting in opposite directions held in a centered position in which the conditions at the sealing surfaces at least change evenly and symmetrically. In this way, even when high temperatures occur, the Reduce leakage in the sealing position to a minimum.

In the case of a pipeline flap with at least one sealing strip mounted in the housing on which the flap wing comes to the plant, the sealing strip consists according to a further feature of the innovation from a fixedly arranged in the housing Bracket part and a sealing part that forms the sealing zone and is adjustable with respect to the bracket part.

In this way, the inevitable manufacturing and assembly tolerances can be comfortably compensated and one achieve optimal sealing.

These and other features of the innovation emerge from the following description of some exemplary embodiments. Show it

Pig.l a schematic longitudinal section through a first embodiment of the invention;

.2 a ! Half-length cut through a second example;

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Pig.3 shows a cross section through a further embodiment the invention;

Pig. 4 a detail from Pig., 3

The one shown very schematically in Pig.l (without housing) The pipeline flap contains a shaft 1 and a flap wing 2. The shaft 1 carries one each in the area of both ends Plansch 5,5 ', which via disc springs 4,4 · on a stationary Bearing part 3, 3 'of the flap housing 20 is supported.

The shaft 1 is mounted so that it can move axially and is held centered in the housing 30 ^{by the cup springs 4, 4 f acting in opposite directions in the axial direction.} In this way, the sealing conditions between the flap wing and the stationary mating surfaces of the housing cannot change unevenly (on one side) even in the event of temperature-related thermal expansion. The arrangement of the springs is chosen so that they relax when the temperature increases leadership of the shaft 1).

In the embodiment shown in FIG. 2, the two ends of the shaft 1 are again identical , so that only one shaft end is shown and explained below. The shaft 1 carries a ring 9 at both ends, which is connected to it in a rotationally fixed manner and is supported on a flange 8 which has a sliding surface 8a . A flange 6 that is firmly connected to the housing 30 carries stains 27, which slide through the flange 8 and serve to guide and hold springs 7, which are supported on the one hand on the flange 6 and on the other hand on the flange 8.

Here, too, the shaft 2 with the flap wing 2 held in a centered position by the axially opposing springs, regardless of thermal expansion. At a Expansion of the flap makes the ring 9 with the rotary movement, the sliding surface 8a of the flange 8 having a low friction Sliding movement with respect to the ring 9 is possible.

711 * 33415.7.71

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FIGS. 3 and 4 illustrate a renewal pipeline flap with a valve housing 10, a shaft 11 and a valve blade 12. In the housing 10 are two semi-annular sealing strips 13,14 attached, the at different "-ites of the closing point mid-plane 15 of the flap wing Ie! are arranged.

Since the two sealing strips 13 and 14 are identical are, only the sealing strip 13 is explained in more detail below. It consists of a fixed in the housing 10 attached (e.g. welded) mounting part 16 and a sealing zone (lip 17) forming sealing position 18. The mounting part 16 and the sealing part 18, which can be adjusted with respect to the mounting part, are provided by adjusting screws 19 adjustable connected to each other. Between the stop? Runo; steep 16 and the sealing part 18 elastic sealing elements 20 are interposed. Plus is on the inside the sealing strip is provided with a protective cover 21 for the sealing elements 20.

As will be readily understood, the seal member of the set screws 18 can be tightened by a corresponding 19 conveniently ( 'use of optical methods, for example, under loading.) So that the sealant; lip 17 of both sealing strips 13, I ¹ * on the entire circumference of the j

Flap wing 12 rests evenly. Manufacturing and / ^v 'ii

In this way, assembly tolerances can easily be set ■ '■: ■' -. '::.: ^; - i & 0 & \

■ ^: - ■ - ■■■: '-: ΐ \. ^ Mm be resembled.

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Claims (5)

Protection claims 1.) Pipeline flap, which by means of a shaft rotatable in a intended for installation in a pipeline Housing is mounted, characterized in that the shaft (e.g. l) delimits axially movable and supported by at least two springs acting in opposite directions in the axial direction (e.g. 4, V) is held centered in the housing. 2.) Pipeline flap according to claim 1, characterized in that the two shaft ends each have a splash (6) carried by several compression springs (7) on a ring (8) axially displaceable with respect to the shaft (1) is supported, which in turn rests against a stationary bearing part (9) by means of a sliding surface (8a). 3.) Pipeline flap according to claim 1, characterized in that the two ends of the shaft (1) over Disc springs (4) directly on a stationary bearing part (5) are supported. 4.) Rohrleitungsklappc, in particular according to claim 1, with at least one sealing strip mounted in the housing on which the flap wing comes to rest, characterized in that, that the sealing strip (e.g. 13) consists of a bracket part (16) fixed in the housing (10) and a sealing part (18) which forms the sealing zone and is adjustable with respect to the mounting part. 5.) Pipeline flap according to claim 4, characterized in that that the holding part (16) and the sealing part (IP) via a plurality of adjusting screws (19) with interposition; elastic sealing elements (20) are connected. ) Pipeline flap according to claim h, characterized in that two semi-annular sealing strips (13> l4) are provided which are arranged on different sides of the closed position center plane (15) of the flap wing (12). 711833415.7.71