TUBE HEAT EXCHANGER CASING

Description

[0001] The invention concerns the casing of a tube heat exchanger.

[0002] In known tube heat exchangers, there are many welds on the casings in places where individual casing fragments made as separate elements are bound together.

[0003] The corrosion resistance and fatigue strength of the welds are far lower than those demonstrated by the material of which the heat exchanger casing is made:
The purpose of the invention is to improve the corrosion resistance and fatigue strength of the casing of a heat exchanger.

[0004] The purpose was achieved by reducing the number of elements bound together with welds, which are most exposed to the potential development of corrosion spots and concentration of mechanical stress.

[0005] A casing of a tube heat exchanger which, on the top, closes a wall of a combustion chamber placed inside a jacked fitted with openings to accommodate a stub pipes for the supply and discharge of the heated liquid, where the wall of the combustion chamber is shaped to form a container open on the top with its bottom formed to make an upper sieve bottom, the container encased in the jacket, where the jacket is welded on the top to the top section of the combustion chamber wall. According to the invention, the casing is characterised in that there is only one weld in the casing, where the jacket is given the shape of the container open on the top with its bottom formed to make a lower sieve bottom.

[0006] The structure of the casing according to the invention improves its durability substantially.

[0007] Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.

[0008] In the drawings:

Fig. 1 shows the casing in isometric projection without the welds in view,

Fig. 2 - the casing with a single weld, in axial section;

Fig. 3 - the casing in a bird's eye view, without the welds visible.

[0009] In the embodiment of the invention featuring a single weld, as shown on Fig. 2, a casing of the tube heat exchanger joins together, in its top section, a wall 1 of a combustion chamber and a jacket 4 which encases the wall 1 of the combustion chamber with flame pipes fitted under the combustion chamber (not shown on the drawing), where the combustion chamber is shaped to form a container open on the top, with its bottom formed to make the upper sieve bottom 2. Jacket 4, too, is shaped into a container open on the top with the bottom formed to make the lower sieve bottom 5. The wall 1 of the combustion chamber is placed inside the jacket 4, where the wall 1 of the combustion chamber is bound at the top to the top section of jacket 2 with a weld 3. At the bottom of the side wall of jacket 4 there is an opening 7 to accommodate the stub pipe for the supply of the heated liquid, and at its top there is an opening 8 to accommodate the stub pipe for the discharge of the heated liquid.

Claims

1. A casing of a tube heat exchanger which, on the top, closes a wall of a combustion chamber placed inside a jacked fitted with openings to accommodate stub pipes for the supply and discharge of the heated liquid, where the wall (1) of the combustion chamber is shaped to form a container open on the top with its bottom formed to make an upper sieve bottom (2), the container encased in the jacket (4), where the jacket (4) is bound on the top with a weld (3) to the top section of the combustion chamber wall, characterised in that there is only one weld in it, where the jacket (4) is given the shape of a container open on the top, with its bottom formed to make a lower sieve bottom (5).

Ansprüche

1. Gehäuse eines Rohrwärmetauschers, welcher eine innerhalb des mit einer Öffnung für Einlass- und Auslassstutzen der zu erwärmenden Flüssigkeit versehenen Mantels befindliche Brennkammerwand oben zusammenschließt, wobei die Wand (1) der Brennkammer in Form eines oben geöffneten Behälters mit im Boden befindlichen, oberen Siebboden (2) ausgeführt ist, welcher innerhalb des Mantels (4) angeordnet ist, wobei der Mantel (4) oben mittels einer Naht (3) mit oberem Wandbereich der Brennkammer verbunden ist, dadurch gekennzeichnet, dass er über nur eine Naht verfügt, wobei der Mantel (4) mit einem im Boden befindlichen, unteren Siebboden (5) in Form eines oben geöffneten Behälters ausgeführt ist.

Revendications

1. Boîtier d'un échangeur à tubes comprenant dans la partie supérieure la paroi de la chambre de combustion située à l'intérieur de l'enveloppe munie d'orifices pour tubulures d'entrée et de sortie du liquide chauffé, la paroi (1) de la chambre de combustion ayant la forme d'un récipient ouvert par le haut, dans lequel le fond est constitué d'un fond tamisé supérieur (2), ledit récipient est situé à l'intérieur de l'enveloppe (4), ladite enveloppe (4) étant reliée par un joint (3) à la partie supérieure de la paroi de la chambre de combustion, caractérisé en ce qu'il n'a qu'un seul joint, l'enveloppe (4) étant en forme de récipient ouvert par le haut, le fond du récipient étant constitué du fond tamisé inférieur (5).

Drawing