DE1501688B1 - Tube bundle heat exchanger with an annular head chamber - Google Patents

Description

at high pressures that part of this leg which is bent in a flow through the head chamber essentially

Menden medium, the head chamber walls must be very strong to the in the Chamber to be able to withstand high loads. This makes a very expensive and a lot Space-consuming construction caused.

To counter this deficiency, heat exchangers with ring-shaped head chambers have already been known, both angular and circular cross-sections were used. From manufacturing

is chosen.

In the drawing, exemplary embodiments of the invention are shown schematically.

F i g. 1 to 4 show sections through different embodiments of the head chamber according to the invention.

The in the F i g. 1 and 2 shown heat exchanger consists essentially of a cylindrical

is perpendicular to the conical head chamber side. As a result of the simple shape of the tubes, both the assembly of the heat exchanger and its maintenance can be carried out relatively easily and quickly. The same also applies to a further embodiment of the invention, according to which the one ring section of the head chamber is equipped with a single flat surface from which the U-shaped tubes extend vertically, for technical reasons these head chambers were in 20 corresponding holes in the a ring divided into two ring sections, which were connected to one another by means of bolts and cut the triangular division flanges in a manner known per se. Therefore
could when using a high pressure fluid
in the head chamber the diameter of the inner one
Flange not reduced below a certain amount 25
be reliable when the pressure loads
should be resisted. This is a significant one
Deficiency of the known arrangements, because the annular head chamber compact radial dimensions with the simultaneous possibility of receiving 30 threshing jacket 10, which must have a maximum number of tubes at one end as usual. closed by a curved bottom and at the end it is therefore desirable, while maintaining a different end, to be provided with a head chamber 1,

from which the tube bundle 2 extend into the shell space. The heat exchanger is arranged upright, the head chamber 1 being at the lower end.

The head chamber 1, which is essentially designed as an annular bead with an annular space 28, consists of two ring sections 1 α and 1 b,

diameter with good feasibility of a weld 40 adjacent ring surfaces 5, 6 arranged in this way Connection between the two ring sections are made possible together with the center line of the ring will.

The object is achieved according to the invention in that the two adjacent ring surfaces, on which the ring sections are connected to one another, are arranged so that they lie together with the center line of the ring space on an imaginary frustoconical surface, the connection of the ring sections in on better known
leads is.

large pipe fastening area on the head chamber, the inner diameter of the annular bead or to keep the ring small.

Based on the known heat exchanger with a split annular head chamber mentioned at the beginning The invention is based on the object of designing it so that a small inner annular space 28 lie on an imaginary frustoconical surface, the connection of the ring sections is designed as a welded connection.

The section 1 α of the head chamber 1 is machined on the outside so that two surfaces are formed, namely a flat surface 3 which is essentially perpendicular to the axis of the annular space and a conical surface 4 which is inclined to the axis.

50 Both surfaces are arranged according to the arrangement of the

Pipes 2 pierced and with not shown

Provided by such a training and Verschwel- stubs or approaches with which the pipes The two ring sections will be welded together in a stable manner.

Head chamber created, in which it is possible under The tubes 2 of the heat exchanger are U-shaped

Maintaining a large pipe attachment area 55 designed. In this case, one leg 40 is bent inward at its end 41 free from the inner ring diameter of the head chamber in such a way that it can be kept small. Flanges for connecting the ring sections can be omitted, which means that the
Advantage of a manufacturing simplification and
on the other hand, an increase in the load capacity 6 °
the head chamber can be reached. As the heat exchanger is used in particular in power plants
in which it is necessary, per hour
several thousand tons of feed water under pressure

To pass through ken of more than 210 kg / cm ² is 65 check and repair enable access, the high load-bearing capacity of the head chamber is very important. With the aforementioned large throughputs, the annular partition plate 9 into two chamber sections, the annular space of the head chamber can subdivide such a large 36, 37. The section 36 is with the a

Attachment to the upper section la of the head chamber, this end 41 is perpendicular to the conical surface 4.

The lower section 1 b of the head chamber is equipped with a nozzle-shaped inlet opening 7 and a nozzle-shaped outlet opening 8, as well as with one or more manholes 29, which are used during manufacture or for subsequent transfer.

Let opening 7 and the inlet 38 connected to the tubes, while the section 37 with the outlet opening 8 and the outlet 39 from the tubes in communication.

The annular head chamber 1 is connected as a whole to the jacket 10 of the heat exchanger by a circumferential weld seam 11 connected. A cover plate 12 is attached by welds 13 transversely to the center of the annular bead, so that a closed Container is formed.

According to FIGS. 3 and 4, in a modification of the embodiment mentioned, the upper ring section la of the annular chamber 1 is machined so that only a single flat surface 32 is created from which the usual U-shaped tubes extend vertically, so that no special bends are required for the legs. The pipes are expediently arranged in a triangular division.

The annular space 28 of this head chamber is equipped with a flat 33, so that this part of the Annular space is parallel to the surface 32 of the chamber, while the remainder of the annular space 28 has a circular shape.

Claims (4)

Patent claims: 1. Heat exchanger with a jacket which is provided at one end with an annular head chamber which is formed from two ring sections, and with a tube bundle extending from the head chamber into the jacket space and protruding through several baffles, characterized in that the two Adjacent annular surfaces (5, 6), on which the ring sections (1 a, Ib) are connected to one another, are arranged so that they lie together with the center line of the annular space (28) on an imaginary frustoconical surface, the connection of the ring sections is designed in a manner known per se as a welded connection. 2. Heat exchanger according to claim 1 for influencing the temperature of a liquid guided through the tubes, characterized in that, in a manner known per se, a ring section (1 a) is used to receive the tubes (2), while the other ring section (1 b) with inlet and outlet openings (7, 8) are provided for the liquid, and separating plates (9) are attached in the annular space (28) between the inlet (38) to the tubes (2) and the outlet (39) from the tubes (2). 3. Heat exchanger according to claim 2, characterized in that the one ring section (la) the head chamber (1) has two externally molded surfaces, one of which is flat (3) and whose other conical (4) is designed, and that the tubes (2) connected to these surfaces (3, 4) U-tubes are, one leg (40) is bent such that after connection of the Tube with one ring section (la) the bent end (41) of this leg in is essentially perpendicular to the conical head chamber surface (Figs. 1, 2). 4. Heat exchanger according to claim 2, characterized in that the one ring section (1 α) the head chamber (1) is equipped with a single flat surface (32), of which the U-shaped Pipes (2) go off vertically, for the corresponding holes in the one Ring section (la) the triangular division is selected in a manner known per se (Fig. 3, 4). 1 sheet of drawings