F22D 5/30
Responsive to both water level and amount of steam withdrawn or steam
Official title: responsive to both water level and amount of steam withdrawn or steam pressure
F22D5/30 (Responsive to both water level and amount of steam withdrawn or steam) appears on 19 US grants and 15 published applications in this corpus.
Search patents in F22D- Granted patents
- 19
- Published applications
- 15
- Assignees
- 11
- Inventors
- 51
- Latest grant
- 6 Feb 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 3 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 2 | 2 |
| 2017 | 0 | 3 |
| 2018 | 2 | 1 |
| 2019 | 3 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- System to achieve full combustion turbine load in HRSG limited combined cycle plants6 Feb 2024US 11,892,160 B1HRST, Inc.
- Feedforward structure for controlling steam drum water level in steam turbine FCB test and control method for the same17 Jan 2023US 11,555,611 B2China Energy Engineering Eastern Electric Power Testing Research Institute Co., Ltd.
- Feedwater control for a forced-flow waste-heat steam generator20 Dec 2022US 11,530,812 B2Siemens Energy Global GmbH & Co. KG
- Systems and methods for controlling drum levels using flow23 Mar 2021US 10,954,824 B2General Electric Company
- Steam drum level control system, computer program product and related methods18 Jun 2019US 10,323,547 B2General Electric Company
- Feedforward structure for controlling steam drum water level in steam turbine fcb test and control method for the same24 Feb 2022US 2022/0057082 A1China Energy Engineering Eastern Electric Power Testing Research Institute Co., Ltd.
- Feedwater control for a forced-flow waste-heat steam generator4 Nov 2021US 2021/0341139 A1Siemens Energy Global GmbH & Co. KG
- Systems and methods for controlling drum levels using flow21 Jun 2018US 2018/0171829 A1General Electric Company
- System and method for drum level control with transient compensation30 Nov 2017US 2017/0344032 A1General Electric Company
- Steam drum level control system, computer program product and related methods24 Aug 2017US 2017/0241298 A1General Electric Company
Most cited
By later US patents
- Boiler level control system26US 4,242,989 AGeneral Electric Company · 1981
- Apparatus for controlling drum water level of drum type boiler22US 4,619,224 AHitachi, Ltd. · 1986
- Pressurized steam boilers and their control19US 6,520,122 B2Autoflame Engineering Limited · 2003
- Combined cycle power plant capable of controlling water level in boiler drum of power plant17US 4,854,121 AKabushiki Kaisha Toshiba · 1989
- Liquid level control system for vapor generator10US 4,551,796 ACombustion Engineering, Inc. · 1985