Conversion set for a tube bundle heat exchanger

摘要

The present invention relates to a conversion set for a pipe bundle heat exchanger having a cylindrical housing. Using said conversion set, existing tube bundle heat exchangers can be changed over such that the efficiency and thus the heat transfer thereof is improved, large exchange surface areas are provided, and energy costs are reduced. The conversion set can also be used in high-pressure applications for pressures above 300 bar. According to the invention, the conversion set has at least one plate heat exchanger unit for replacing the tube bundle unit, comprising at least the following components: a plate packet having at least two heat exchanger plates, each comprising at least one through hole and welded to each other in pairs along the periphery thereof or along the periphery of the through holes, two mounting plates each having at least one through hole, wherein one each of the mounting plates is arranged at each end of the plate packet and is connected to each outermost heat exchanger plate of the plate packet, and at least one tension means extending in the longitudinal axis between the mounting plates and connected to both mounting plates, so that the two mounting plates and the tension means form a cage about the plate packet, said cage absorbing the forces arising in the plate packet in the operating state of the plate heat exchanger unit, wherein the outer diameter of the plate heat exchanger unit is adapted to the inner diameter of the cylindrical housing of the tube bundle heat exchanger, and the tension means is designed as a flow director extending at least partially around the periphery of the plate packet.

主权项

1. Conversion set for a tube bundle heat exchanger having a cylindrical housing, which housing has an inner diameter and is configured to receive therein a tube bundle unit, the conversion set comprising at least one plate heat exchanger unit for replacing such tube bundle unit, the plate heat exchanger unit having an outer diameter configured to fit within the inner diameter of the cylindrical housing and comprising at least the following components:
(a) a plate packet having at least two heat exchanger plates, each comprising at least one through hole and welded to each other in pairs along the periphery thereof or along the periphery of the through holes, (b) a cage comprised of two essentially circular mounting plates joined to at least one tension means flow director which extends in the longitudinal direction between the two mounting plates, the tension means flow director comprising a single structure which is configured to extend at least partially around the periphery of the plate packet and serves both to secure the two mounting plates to each other and to prevent bypass flow of a heat exchange medium past the plate packet, wherein an inner side of the at least one tension means flow director is located on the external diameter of the plate packet and an outer side of the at least one tension means flow director terminates along the outer diameter of the mounting plates, the two mounting plates each having at least one through hole and a recess in the shape of a ring segment at its edge for diverting the flow of a heat transfer medium flowing through the housing of the tube bundle heat exchanger, wherein the recess extends over an angle of approx. 90°, and wherein in each case one of the mounting plates is arranged at each end of the plate packet and is connected to each outermost heat exchanger plate of the plate packet, wherein the at least one tension means flow director is located on either side of the recess, and wherein the cage is disposed about the plate packet and is by itself capable of absorbing the forces arising in the plate packet in the operating state of the plate heat exchanger unit to thereby preclude such forces from forcing apart the heat exchanger plates.