Low-pressure feedwater preheater
US5975030A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Oct 9, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF22D1/32
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A low-pressure feedwater preheater or heater in power station plants, heated with bleed steam and having a two-pass tube bundle of the tube sheet type of construction, has a carrier design for the tube bundle having side plates (9) running parallel to the tube bundle and one or more supporting plates (8) disposed perpendicularly to the tube bundle. In the center of the bundle between the cold and the hot leg, a partition (11) extends along the entire length of the bundle leg. Arranged on either side of the partition (11) are suction tubes (12) through which non-condensable gases are drawn off in the zones of lowest pressure. According to the invention, the supporting plates (8) are each made of a single piece and are thus continuous, and the partition (11) consists of individual sheet-metal parts which are connected to the supporting plates (8). In one embodiment, the sheet-metal parts of the partition (11) and the supporting plate (8) are connected to one another by indentations (16) on each side of the sheet-metal part (11) which faces the supporting plate (8) and by a corresponding opening (17) in the supporting plate (8).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.