摘要:
The invention concerns a heat exchanger for industrial installations, in particular for power plants, with at least one distributor for a fluid medium and at least one heat exchanger element attached to the distributor. The heat exchanger is composed of a sandwich-like configuration of distributors and heat exchanger elements consisting of metal sponges. The distributors are constructed as pipes or at least as semi-pipes connected with each other. Adjacent pipes or semi-pipes are connected with each other through the metal sponge. The sandwich profile of the invention may easily be manufactured in the required dimensions for industrial installations. Herein, particularly the low weight of such a heat exchanger module and the connection between shell and metal sponge, which may simply be made by means of soldering or welding, proves to be particularly advantageous. The metal foam may also be cast onto the shells. The metal sponge should preferably consist of open-pored metal foam and in particular aluminum foam.
摘要:
The invention concerns inserts in the moist/wet region of cooling towers, which essentially consist of plastic. An additive that prevents or considerably reduces soiling through the formation and buildup on the inserts during subsequent use is added to the plastic.
摘要:
Air filters comprising thin-walled textile filter bodies have to be cleaned periodically. According to a method known to this purpose, the filtered material is loosened using pressure pulses in a flushing air flow. According to the invention, for generating the pressure pulses a plurality of small, quick-acting valves are in each case briefly opened, the opening moments being adapted to one another in such a way that partial pulses released thereby arrive simultaneously at the inlet of a flushing line common thereto.
摘要:
The present invention relates to an exhaust gas guide of a gas turbine, which is situated between the gas turbine and a downstream waste heat boiler or a downstream gas diverter and which comprises a flow channel which has a cross-section expanding in at least some areas in the main flow direction, having installed surfaces influencing the flow. In order to achieve a more compact implementation of the exhaust gas guide and simultaneously avoid or reduce pressure losses, the installed surfaces are implemented as a swirl device generating a leading edge swirl, which is situated in the diverging area of the flow channel and is implemented to distribute the exhaust gas flow uniformly over the flow cross-sectional area upon entry into the waste heat boiler or the gas diverter. Furthermore, the present invention relates to a method for mixing the exhaust gas of a gas turbine with hot exhaust gas streams generated in an auxiliary firing of at least one burner. This thorough mixing is achieved by generating at least one leading edge swirl system in the flow channel.
摘要:
The invention concerns a hydraulic expansion process for tubes. With this process it is possible to increase the number of hydraulic tube expansions that can be implemented using an expansion device. The hydraulic expansion process in accordance with the invention is highly optimized with regard to control times, pressures and flows. In this process, pressure is produced in the pressure medium with hydraulic oil via a medium separator and a pressure intensifier. In addition, the invention specifies a device for implementing the expansion process and a process for determining the maximum number of hydraulic tube expansions that can be performed with a probe. Finally, the maximum number of expansions is determined taking into account the deformations of the expanded tubes.
摘要:
The invention relates to a method for bonding an aluminum rib to a steel pipe, a surface coating material of the steel pipe being used as the bonding material, so that supplying a separate soldering material, for example, may be dispensed with. The invention additionally relates to a heat exchanger which comprises a unit made of steel pipe and aluminum rib produced according to the method.
摘要:
The invention concerns a hydraulic expansion process for tubes. With this process it is possible to increase the number of hydraulic tube expansions that can be implemented using an expansion device. The hydraulic expansion process in accordance with the invention is highly optimized with regard to control times, pressures and flows. In this process, pressure is produced in the pressure medium with hydraulic oil via a medium separator and a pressure intensifier. In addition, the invention specifies a device for implementing the expansion process and a process for determining the maximum number of hydraulic tube expansions that can be performed with a probe. Finally, the maximum number of expansions is determined taking into account the deformations of the expanded tubes.
摘要:
The invention concerns a heat exchanger for industrial installations, in particular for power plants, with at least one distributor for a fluid medium and at least one heat exchanger element attached to the distributor. The heat exchanger is composed of a sandwich-like configuration of distributors and heat exchanger elements consisting of metal sponges. The distributors are constructed as pipes or at least as semi-pipes connected with each other. Adjacent pipes or semi-pipes are connected with each other through the metal sponge. The sandwich profile of the invention may easily be manufactured in the required dimensions for industrial installations. Herein, particularly the low weight of such a heat exchanger module and the connection between shell and metal sponge, which may simply be made by means of soldering or welding, proves to be particularly advantageous. The metal foam may also be cast onto the shells. The metal sponge should preferably consist of open-pored metal foam and in particular aluminum foam.
摘要:
The method for manufacturing heat exchanger elements includes the steps of forming an open tubular base body having a longitudinal extension having a width that is substantially greater than the height thereby defining narrow and wide sides of the tubular base body. In the longitudinal extension of the tubular base body a longitudinal opening with longitudinal edges remains. Two strips of sheet metal are removed from a supply roll and corrugated to form corrugated sheet metal strips. The open tubular base body and the corrugated sheet metal strips are advance continuously and parallel to one another in the direction of the longitudinal extension through a fastening device such that the wide sides face the corrugated sheet metal strips. The corrugated sheet metal strips are pressed onto the wide sides and then fastened to the wide sides at some locations of contact between the wide sides and the of corrugated sheet metal strips. Subsequently, the longitudinal edges of the opening are joined to close the opening and form a closed tubular structure. During fastening of the corrugated sheet metal strips onto the wide sides, the wide sides of the open tubular base body are supported from the interior by a support structure.
摘要:
The present invention relates to a filter device for separating particles from a gaseous fluid sucked in by a gas turbine, the filter device having a vertically situated tubular electric filter. Maintenance work on a gas turbine may thus be significantly reduced and, in addition, a higher gas turbine output may be achieved due to low pressure loss of the tubular electric filter.