Steam generator pipe having a turbulence installation body

Abstract

A steam generator pipe for producing a steam generator pipe with a spiral-shaped installation body, wherein an elevation extends on the inner side of the steam generation pipe in the axial direction of the steam generator pipe. A method for producing a steam generator pipe having an installation body.

Claims

1. A method for producing a steam generator pipe comprising an installation body, the method comprising: producing a steam generator pipe comprising an elevation which is an integrally formed portion of the steam generator pipe and which extends in a longitudinal direction of the steam generator pipe on a pipe inner side, and welding the installation body on the elevation in the steam generator pipe such that the installation body is positioned radially inward of the elevation with respect to a longitudinal axis of the steam generator pipe, wherein the steam generator pipe comprising the elevation is produced by a cold drawing process that forms the elevation as the integrally formed portion of the steam generator pipe.

2. The method according to claim 1, wherein the installation body is spiral-shaped and is welded on the elevation at multiple contact points.

3. A method, comprising: cold drawing a steam generator pipe comprising an elevation which is integrally formed in the steam generator pipe as part of the cold drawing, wherein the elevation extends in a longitudinal direction of the steam generator pipe on a pipe inner side, and welding an installation body on the elevation such that the installation body is positioned radially inward of the elevation with respect to a longitudinal axis of the steam generator pipe.

4. The method of claim 3, wherein a radial height of the elevation is not greater than one millimeter.

5. A method for producing a steam generator pipe comprising an installation body, the method comprising: producing a steam generator pipe comprising an elevation which is an integrally formed portion of the steam generator pipe and which extends in a longitudinal direction of the steam generator pipe on a pipe inner side, and welding the installation body on the elevation in the steam generator pipe such that the installation body is positioned radially inward of the elevation with respect to a longitudinal axis of the steam generator pipe, wherein the installation body is spiral-shaped and is welded on the elevation at multiple contact points.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will be discussed in more detail by way of example on the basis of the drawings. In the drawings, in each case schematically and not to scale:

(2) FIG. 1 shows a steam generator pipe with an elevation,

(3) FIG. 2 shows a steam generator pipe with a spiral-shaped installation body, and

(4) FIG. 3 shows a flow diagram of the method according to the invention.

DETAILED DESCRIPTION OF INVENTION

(5) FIG. 1 shows, schematically and by way of example, a steam generator pipe 1 for the production of a steam generator pipe 2 having a spiral-shaped installation body 3, which is shown in FIG. 2.

(6) On the inner side 4 of the steam generator pipe 1 in FIG. 1, an elevation 5 extends in the axial direction of the steam generator pipe 1, specifically, as FIG. 2 shows, over the entire region in which the spiral-shaped installation body 3 is arranged. The installation body 3 is welded to the elevation 5 at multiple contact points 6.

(7) FIG. 3 schematically shows the individual steps of the production method according to the invention. In step A, a steam generator pipe 1 having an elevation which extends in the longitudinal direction of the steam generator pipe on a pipe inner side is produced, for example by means of cold drawing. The object in FIG. 1 is thus formed. The installation body 3 is then firstly introduced in step B and subsequently welded on the elevation 5 in the steam generator pipe 1 in step C, with the result that a steam generator pipe 2 having an installation body 3 is formed. Since a swirl installation body 3 shown in FIG. 2 has multiple windings, it is also welded at multiple contact points 6 between the swirl installation body 3 and the elevation 5.