Patent RU-2246089-C2 (RU)
Inventor: IVASHCHENKO S S
IPC: F28D7/00
Filed: 2002-12-24
Granted: 2005-02-10
Abstract: FIELD: heat power engineering, applicable in designing and production of heat exchangers with tube plates and in other branches of industry. 
     SUBSTANCE: according to the first modification, the shell-and-tube heat exchanger has a heat exchanger shell with connections for delivery and discharge of the medium with a lower pressure, it envelops the heat-exchanging tubes connected to the tube plate, distributor chamber separated by a partition into the inlet and outlet cavities and limited by the case with connection for delivery and discharge of the medium with a higher pressure, case cover and tube plate having a strengthening tie in the distributor chamber, the strengthening tie is made in the form of a stiffening tube fixed to the case cover of the distributor chamber and the tube plate. According to the second modification, the shell-and-tube heat exchanger has a heat exchanger shell with connections for delivery and discharge of the medium with a lower pressure, it envelops the heat-exchanging tubes connected to the tube plate, distributor chamber separated by a partition into the inlet and outlet cavities and limited by the case with connections for delivery and discharge of the medium with a higher pressure, case cover and tube plate having a strengthening tie in the distributor chamber, the strengthening tie is made in the form of a stiffening tube fixed to the case over of the distributor chamber and the tube plate, the strengthening tie in the form of a stiffening tube with the case cover and the tube plate has a through hole of a permanent or variable flow section. According to the third modification, the shell-and-tube heat exchanger has a heat exchanger shell with connections for delivery and discharge of the medium with a lower pressure, it envelops the heat-exchanging tubes connected to the tube plates, distributor chamber separated by a partition into the inlet and outlet cavities and limited by the case with connections for delivery and discharge of the medium with higher pressure and the tube plates, in the distributor chamber the tube plates are fixed to one another by a strengthening tie in the form of stiffening rod. According to the fourth modification, the shell-and-tube heat exchanger has a heat-exchanger shell with connections for delivery and discharge of the medium with a lower or pressure, it envelops the heat-exchanging tubes connected to the tube plates, distributor chamber separated by a partition into the inlet and outlet cavities and limited by the case with connections for delivery and discharge of the medium with a higher pressure and the tube plates, in the distributor chamber the tube plates are fixed to one another by a strengthening tie in the form of stiffening tube. According to the fifth modification, the shell-and-tube heat exchanger has a heat-exchanger shell with connections for delivery and discharge of the medium with a lower pressure, it envelops the heat-exchanging tubes connected to the tube plates, distributor chamber separated by a partition into the inlet and outlet cavities and limited by the case with connections for delivery and discharge of the medium with a higher pressure and the tube plates, in the distributor chamber the tube plates are fixed to one another by a strengthening tie in the form of a stiffening tube, the strengthening tie in the form of a stiffening tube with tube plates has a through hole of a permanent or variable flow section. 
     EFFECT: idle time, enhanced utilization factor of the heat exchanger, as well as enhanced strength of the structure in static and especially dynamic modes of operation. 
     5 dwg