DE699042C - Insert body for pipes in steam boilers and other heat exchangers - Google Patents

Description

Insert body for pipes in steam . Soels and other heat exchangers In order to make the gases in the tubes of steam boilers or other heat exchangers swirl, insert bodies for these tubes are known which consist of several deflecting surfaces. The swirl effect can be increased by installing several swirl bodies next to one another by generating several swirl flows in the same pipe, which each rotate around their own axis, move parallel to one another in opposite directions of rotation and are not separated from one another by partition walls. Under certain circumstances, several swirl bodies must be arranged one behind the other, since the energy of the swirl movement is consumed relatively quickly.

In order to avoid this disadvantage, the insert body according to the present invention is used Invention designed so that the individual swirl currents have the same direction of rotation and forms a common swirl flow. Through this double twisting movement the inner flue gases, which have not yet cooled down in the middle of the pipe, are constantly escaping to the outside driven and inevitably by the common swirl flow on the pipe jacket led along. The pipe jacket is consequently a-uf the entire pipe length and Uniformly heated in every cross # Imitt of the tube, so that no material stresses and uneven expansions in the pipe jacket can occur.

In the embodiment according to the accompanying drawing, which is shown in Fig. I a cross section, in Fig. 2 shows a longitudinal section through a flame tube, consists the insert body a from four steering surfaces b, which are designed in the shape of a shovel. When they hit the blade surface, the smoke gases passing through are in Swirl offset, so that four individual rectified swirl currents arise. There the blade surfaces are also inclined to the direction of flow of the gases in the R.bhre, the individual flow currents are deflected from their axial direction so that they in turn form a common swirl flow also with the same direction of rotation.

By combining the individual swirl currents, the common The swirl flow is so strong that it acts over a relatively large length of the pipe, Chne that several insert bodies need to be arranged one behind the other.

Claims (1)

PATFNT CLAIM: Insert body for pipes in steam boilers and others Heat exchangers, -which consists of several deflecting surfaces and for generating several swirl currents in the same pipe is suitable, 'without these swirl currents are separated from one another by partition walls, characterized by such Training of the insert body that the individual swirl currents rotate in the same direction have and form a common swirl flow '.