DE29813329U1 - Corrugated anchors for refractory material - Google Patents

Abstract

The round steel tie piece is bent into a V-shape and has a foot (1) of parallel pieces (2). The arms (3) extending outwards from the foot are corrugated. The parallel pieces of the foot are cold-formed to a reduced width with a smooth contact surface (4) of the pieces. The round steel has a diameter of 6 millimetres, and the foot has a width of at most 9.5 millimetres, such as 7.8 millimetres.

Description

SPARING _# ^

P?\*T E M T A N vVa Lf E

EUROPEAN PATENT AND TRADEMARK ATTORNEYS

Dipl.-lng. Helmut Marsch (1934-1979) PO Box 14 04 43

Dipl.-lng. Klaus Sparing D-40074 Düsseldorf

Dr. rer nat. Wolf Horst Röhl

Dr. rer; nat. Daniela Henseler Phone (0211) 6710 34

Fax (0211) 66 34 20

SPARlN(S, HÖHL, HENS6LER ■ P.O. BOX 14&Ogr;4 43 · D-40074 DÜSSELDORF SRHPat@aOl.COm

Welding Service 306 GM 13

Detlef Köster GmbH & Co. KG
Spreelerweg 32
58256 Ennepetal

Corrugated anchors for refractory material

The invention relates to a corrugated anchor for refractory material according to the preamble of claim 1.

Corrugated anchors made of round steel that is essentially bent in a V-shape and has a base made up of sections that run parallel to one another, while the legs extending outwards from the base are corrugated, are used in power plants to anchor refractory material and are welded using a ceramic ring to corresponding, heat-exposed surfaces of heat exchangers or the like, which are to be provided with a protective layer of refractory material.

However, due to the bending of the round steel in the base area of the corrugated anchor, the base is too wide to accommodate pipes or

SPARING, RÖHL, HENSELER · RETHELSTRASSE 123 ■ D-40237 DÜSSELDORF

2-

To pin fins of heat exchanger boilers or similar.

The object of the invention is to provide a possibility for pinning pipes or fins located between pipes of heat exchangers with wave-shaped anchors for refractory material.

This object is achieved according to the characterizing part of claim 1.

Because the parallel sections of the foot are cold-formed to a reduced width with a flat contact surface between the sections, the foot can be inserted into a ceramic ring, which forms a sufficiently small gap with the outer wall of a pipe when placed on it, so that the corrugated anchor can be easily welded to the pipe at any point. In addition, the ceramic ring required for such a foot can also be placed on a fin between two pipes, so that the corrugated anchor can also be easily welded there.

Further embodiments of the invention can be found in the following description and the dependent claims.

The invention is explained in more detail below with reference to embodiments shown in the accompanying drawings.
Fig. 1 shows a corrugated anchor in side view.

Fig. 2 and 3 show a section along the line A-A of Fig. 1 of two different embodiments.

Fig. 4 and 5 illustrate the welding of corrugated anchors onto pipes and a fin respectively and show the arrangement before welding.

The corrugated anchor shown in Fig. 1 consists of a round steel piece, which in particular has a diameter of 6 mm. The round steel piece is essentially bent in a V-shape and has a base 1 made up of sections 2 running parallel to one another and two legs 3 extending outwards from the base 1 in a V-shape, which are corrugated, in particular not only in one plane, but three-dimensionally.

The foot 1 is designed to be less than twice the diameter of the round steel piece, at least over a sufficiently large part of its length, starting at the foot end, by cold-forming the sections 2 of the foot 1 that run parallel to one another to a reduced width with a flat contact surface 4 of the sections 2 against one another. As can be seen from Fig. 2, the foot 1 has a substantially oval shape in section with a width reduced from, for example, 12 mm to, for example, 9.5 mm, while the foot 1 according to Fig. 3 is further deformed to a substantially circular cross-section with a diameter of, for example, 7.8 mm.

As can be seen from Fig. 4, the foot 1 of the corrugated anchor, which has been reduced in width in this way, can be inserted into a ceramic ring 5 of a correspondingly small diameter for welding to a pipe 6, whereby only a correspondingly small gap remains between the outer wall of the pipe 6 and the facing side of the ceramic ring 5, which ensures problem-free welding.

As can be seen from Fig. 5, the foot 1 of the corrugated anchor, which has been reduced in width in this way, can also be used in a ceramic ring 5 of a correspondingly small diameter, which can be placed on a fin 7 between two pipes 6, so that the corrugated anchor can be welded to the fin 7 without any problem.

Claims (4)

-A- Claims 1. Corrugated anchor for refractory material made of a round steel which is bent essentially in a V-shape and has a foot (1) made up of sections (2) running parallel to one another, while the legs (3) extending outward from the foot (1) are corrugated, characterized in that the sections (2) of the foot (1) running parallel to one another are cold-formed to a reduced width with a flat contact surface (4) of the sections (2) against one another. 2. Corrugated anchor according to claim 1, characterized in that the sections (2) of the foot (1) are cold-formed to a substantially circular cross-section. 3. Corrugated anchor according to claim 1 or 2, characterized in that the round steel has a diameter of about 6 mm and the foot (1) has a width of at most about 9.5 mm. 4. Corrugated anchor according to claim 3, characterized in that the foot (1) has a width of approximately 7.8 mm.