Externally adjustable pipe orifice assembly
US4459922A · kind A · utility
22Cited by
9References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1983 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Jan 24, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23C5/32
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A coal pulverizer is connected to the burner nozzles of a tangentially-fired furnace with conduits of varying lengths through which air-entrained coal is supplied for combustion within the furnace. An externally adjustable orifice assembly is mounted in each connecting conduit to equalize the flow of coal/air through the conduits to nozzles in the windboxes. Each orifice assembly comprises pivotable plates which move transverse the axis of the conduit to form an orifice in controlling the coal/air flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.