DE1944582U - SEALING RING FOR PIPE FLANGE CONNECTIONS. - Google Patents

Description

Sealing ring for pipe flange connections

The innovation "concerns a sealing ring made of metal for with Tongue and groove pipe flange connections.

10

15th

The standardized tongue and groove flanges (DIN 2512) support the constructive ones Peculiarity that the diameters of the tongue and groove elements arranged on the flange edge surfaces are greater than the nominal flange width, which means that the flange connection is hot an annular gap communicating with the flow path is formed. The pipeline penetrates into this annular gap medium flowing through and can deposit suspended particles and any impurities that may be carried along and / or change its state due to uncontrollably long dwell times in the annular gap. These deposits and / or Changes in length can have a very detrimental effect on the quality of the flow medium. If it is a question of pipelines for high polymer products, ζ .3. around textile lines in plants acts to produce synthetic threads, occur in the

- 2 -

Annular gaps of the paddling connections often the feared cracking, which not only affects the product quality, but also from time to time make a cleaning of the splash connections necessary, each of which is often very inaccessible Splash connections have to be loosened and put back together again.

The innovation proposes a sealing ring which completely eliminates the above disadvantages of such pipe flange connections. This sealing ring is characterized in that it essentially has a \ U-shaped cross-section with parallel or approximately ^: ^ parallel to the plane of the ring aligned profile legs \

and has an inner diameter of about Planschnenn- -vieite, while its outer diameter is about the Corresponds to the inner diameter of the tongue and groove elements, the closed side of the U-profile delimiting the through-opening of the ring. According to the innovation Sealing ring fills the unavoidable annular gap when the splash connection is joined, so that the The flow medium can only penetrate with difficulty, but once the product has penetrated it cannot escape again.

Further features of the innovation result from the sub- claims.

The innovation will now be described below with reference to an example illustrative drawings' explained in more detail in which: FIG i

Fig. 1 .a section through an innovation according to the invention Sealing ring and

Pig. See 2 joined welding necks with inserted sealing ring according to Fig. 1., also in sectional view.

The sealing ring 1 has a U-shaped cross-section with two legs 2 and 3 of which the legs 3 _s short, preferably by approximately half shorter., Than the leg 2 is executed. The inner ring diameter d corresponds approximately to the NW of the pipeline "or the planes 4 and 5 ₅ while the outer diameter D corresponds approximately to the inner diameter of the tongue and groove elements 6 and 7. When the outer diameter D is only slightly smaller than the inner diameter of the peder element 6 "so occurs" when the sealing ring 1 is inserted, the ring is automatically centered with respect to the horizontal axis.

The ring is useful as deep-drawn and flanged Steel sheet ring formed, the material selected that it is "resistant" to the flow medium As a rule, it is made from a stainless steel sheet. The ring thickness and the thickness of the

Position of the sheet metal used depend "on the NW of the to be connected Plansche "or according to the dimensions of the Tongue and groove elements 6.7 · The ring thickness a is preferred chosen so that it is approximately the "width of the annular gap" when the splashes are joined, plus the tightening path is equivalent to. During the suit, the ring therefore experiences a deformation, which depends on its thickness and on the Ringwerkstο ff a plastic and / or elastic deformation is. In the case of elastic deformation, the ring "can be reused as often as you like. The greater the thickness of the ring and thus the tightening path, the greater the sealing effect of the ring For example, legs 2 and 3 of the U-profile are parallel - arranged to each other and to the ring hene. However, the legs can also enclose an acute angle, whereby the tightening path is increased. In this pail occurs predominantly a "permanent deformation of the ring.

Pig. 2 shows that the ring according to the invention closes the ring gap almost completely, so that the penetration of the Flow medium in the annular gap and the formation of deposits in the annular gap is largely prevented. When using the ring according to the innovation can therefore of the annular gap no damaging influence on the flow medium be exercised and the "previously required rule" There is no need to open the pipe flange connection moderately to remove deposits.

- Protection claims -

Claims (4)

-As protection claims 1. Metal sealing ring for tongue and groove flange connections, characterized in that it has a substantially U-shaped cross-section with profile legs (2, 3) "oriented parallel or approximately parallel to the infeed and an inside diameter of · '· having about flange nominal width, while its Outer diameter \ diameter approximately equal to the inner diameters of the hat and spring elements, wohei the closed side of the TJ-profile ο limits the passage opening of the Einges (1) " 2. The sealing ring according to claim 1, 'characterized _s that its thickness corresponds approximately to the width of the Eingspaltes between the mated flanges plus the tightening path " 3. Seal ring according to claims 1 and 2, marked by t is characterized in that one of the legs (3) of the U section shorter, ^':: i preferably by approximately half shorter than the other S -'- \ leg ( 2) is executed. 4. The sealing ring according to claims 1 marked "to 3j _thereby; characterized in that it be made of sheet steel and, U-shaped cross-section by deep drawing and flanging: is formed.