子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 161 | STEAM GENERATION APPARATUS AND ASSOCIATED CONTROL SYSTEM AND METHODS FOR PROVIDING A DESIRED INJECTION PRESSURE | US14030656 | 2013-09-18 | US20150075628A1 | 2015-03-19 | Randall J. Davis; Charles F. Noll, JR. |
| The current disclosure relates to steam generation and supply apparati and associated control systems. Particularly, the current disclosure relates to such steam generation supply apparati and associated control systems that are used for enhanced oil recovery. Certain embodiments are provided including methods and associated control systems related to the startup as well as main steam pressure header control or maintenance of a desired steam quality for such steam generation systems during normal operation. | ||||||
| 162 | Oxygen measuring apparatuses | US13881780 | 2010-10-29 | US08839746B2 | 2014-09-23 | Muhidin A. Lelic; Thomas Corti; Oduwa Osagiede; Kenneth M. Swanson; John R. Devine; Mike McCarron; Bryan Mills |
| An oxygen measuring apparatus (500) includes an inlet pipe (506) having a first end and a second end, an oxygen sensor (511) arranged inside the inlet pipe (506) between the first end of the inlet pipe and the second end of the inlet pipe, the oxygen sensor (511) having a communication medium (515) disposed thereon and extending through the second end of the inlet pipe (506), a filtering medium arranged (505) inside the inlet pipe between the oxygen sensor (511) and the first end of the inlet pipe, a housing (501) arranged against the second end of the inlet pipe, and a sensor control interface (512) arranged within the housing (501) and in communication with the communication medium (515) of the oxygen sensor (511). | ||||||
| 163 | Method and apparatus for controlling operation of oxyfuel combustion boiler | US13943000 | 2013-07-16 | US08814561B2 | 2014-08-26 | Tetsuya Hori; Toshihiko Yamada; Yohei Akutsu |
| Stable operation of oxyfuel combustion boiler is ensured and amplification in likelihood of or downsizing of forced draft fan is attained. Upon change of commanded boiler load from start value to target value by target time, a feed amount of oxygen from oxygen producing device is regulated for attainment of oxygen concentration on entry side of the boiler body from reference value to attainment point or target entry-side oxygen concentration within entry-side oxygen concentration regulation range by target time. After attainment to attainment point, control is made to return entry-side oxygen concentration to reference value at return point. Airflow rate of forced draft fan is controlled with change rate smaller than change rate with which air flow rate of forced draft fan reaches target value by target time. | ||||||
| 164 | APPARATUS AND METHOD FOR CONTROLLING GAIN ACCORDING TO RATE OF CHANGE IN WATER LEVEL OF STEAM GENERATOR IN NUCLEAR POWER PLANTS | US14134251 | 2013-12-19 | US20140177772A1 | 2014-06-26 | See Chae JEONG; Ju Han LEE; Jong Joo SOHN; Myung Jun SONG; Chan Eok PARK |
| Provided is an apparatus for controlling a gain according to a water level change rate of a steam generator in nuclear power plants. The apparatus includes a water level variance detector detecting a water level variance of the steam generator, a change rate calculator calculating a water level change rate with respect to the detected water level variance, a compensation value calculator calculating a compensation gain value corresponding to the calculated water level change rate, a reactor power sensor sensing whether or not reactor power corresponds to certain power or less, and a gain compensation controller, when the reactor power corresponds to the certain power or less, outputting a control gain value obtained by combining a general gain value provided to control a proportional-integral (PI) controller with the compensation gain value to the PI controller | ||||||
| 165 | TEMPERATURE CONTROL SYSTEM | US14236839 | 2012-08-02 | US20140157813A1 | 2014-06-12 | Yuzuru Kato; Eiichi Yamada; Kentarou Morita |
| A temperature control system of the invention recovers reaction heat in a reactor in which an exothermal reaction occurs, to control the temperature in the reactor. The temperature control system includes: a refrigerant drum in which vapor and a liquid refrigerant are stored in a vapor-liquid equilibrium state; a heat removing section arranged in the reactor to evaporate a part of the liquid refrigerant supplied from the refrigerant drum by the reaction heat; a Return line that returns mixed phase fluid of vapor and the liquid refrigerant generated in the heat removing section to the refrigerant drum; a Vapor outlet line that supplies vapor in the refrigerant drum to outside of the system; and a Replenishing line that supplies makeup water in an amount matched with an amount of vapor discharged to the outside of the system, to the Return line. | ||||||
| 166 | OXY-FUEL PLANT WITH FLUE GAS COMPRESSION AND METHOD | US13992989 | 2011-12-09 | US20140144355A1 | 2014-05-29 | Konrad Jerzy Kuczynski; David James Adams |
| A method of and control apparatus for operation of a boiler plant are described. The boiler plant has a furnace volume, an oxyfuel firing system for oxyfuel combustion of fuel in the furnace volume, and a compression system for compression of gases exhausted from the furnace volume after combustion. The method and control apparatus are characterized by the step of controlling mass flow of gases through the compression system as a means to control pressure within the furnace volume. This invention relates to both single and multi unit arrangements. | ||||||
| 167 | METHOD AND SYSTEM FOR OPERATING A SOLAR STEAM SYSTEM | US13951415 | 2013-07-25 | US20140026566A1 | 2014-01-30 | Sami Katz; Israel Kroizer |
| Methods, apparatus and systems for operating a solar steam system in response to a detected or predicted reduced or impending reduced insolation event are disclosed herein. Examples of transient reduced insolation events include but are not limited to cloud-induced reduction in insolation, dust-induced reduction in insolation, and insolation events caused by solar eclipses. In some embodiments, in response to the detecting or predicting, steam flow is regulated within the solar steam system to reduce a flow rate into a steam turbine. Alternatively or additionally, one or more heliostats may be responsively redirected onto a steam superheater or steam re-heater. | ||||||
| 168 | Oxygen Measuring Apparatuses | US13881780 | 2010-10-29 | US20130213279A1 | 2013-08-22 | Muhidin A. Lelic; Thomas Corti; Oduwa Osagiede; Kenneth M. Swanson; John R. Devine; Mike McCarron; Bryan Mills |
| An oxygen measuring apparatus (500) includes an inlet pipe (506) having a first end and a second end, an oxygen sensor (511) arranged inside the inlet pipe (506) between the first end of the inlet pipe and the second end of the inlet pipe, the oxygen sensor (511) having a communication medium (515) disposed thereon and extending through the second end of the inlet pipe (506), a filtering medium arranged (505) inside the inlet pipe between the oxygen sensor (511) and the first end of the inlet pipe, a housing (501) arranged against the second end of the inlet pipe, and a sensor control interface (512) arranged within the housing (501) and in communication with the communication medium (515) of the oxygen sensor (511). | ||||||
| 169 | Geared boiler feed pump drive | US13251759 | 2011-10-03 | US08499562B2 | 2013-08-06 | Melbourne F. Giberson |
| A geared fluid drive arrangement in which a constant speed motor is used to start a “full-size” boiler feed pump, and is able to operate the pump at a limited speed and correspondingly limited power adequate to fill, pressurize and feed water to a boiler such as would be used for an electrical generating plant to start-up and to operate stably at part load, but not necessarily full load. After the boiler is operating stably, steam from the boiler or from an extraction point of the main turbine is admitted to a mechanical drive steam turbine in order to drive the same “full-size” pump to the normal operating range. | ||||||
| 170 | Method and System for Fuzzy Constrained Sootblowing Optimization | US13315994 | 2011-12-09 | US20130146089A1 | 2013-06-13 | Brad Radl |
| A system and method to control of sootblowers in a fossil fueled power plant, in particular to plant applications systems using a graphical programming environment in combination with a set of rules to activate sootblowers. The system can be constrained by time limits and/or rule based time limits. Actual blower activation is typically based on the current status of key control variables in the process which alter the actual activation time within a constraints system. The system does not typically require knowledge or models of specific cleanliness relationships. The result is a system without sequences or queues that readily adapts to changing system conditions. | ||||||
| 171 | Method and device for regulating the production of steam in a steam plant | US13514313 | 2010-09-28 | US20130133751A1 | 2013-05-30 | Christoph Backi; Jörg Gadinger; Bernhard Meerbeck; Michael Treuer; Tobias Weissbach; Klaus Wendelberger |
| A method for regulating the production of steam from feed water in an evaporator of a steam plant is provided. A state regulator calculates a plurality of states of a medium in the evaporator by means of an observer and, on the basis thereof, determines a feed water mass flow rate as a regulating variable. In order to obtain a stable and precise regulation of the temperature of the steam, the state regulator is a linear-quadratic regulator. | ||||||
| 172 | MODEL-BASED LOAD DEMAND CONTROL | US13285072 | 2011-10-31 | US20130110298A1 | 2013-05-02 | Robert A. Beveridge |
| Embodiments of methods and systems for controlling a load generated by a power generating system may include controlling at least a portion of the system using model-based control techniques. The model-based control techniques may include a dynamic matrix controller (DMC) that receives a load demand and a process variable as inputs and generates a control signal based on the inputs and a stored model. The model may be configured based on parametric testing, and may be modifiable. Other inputs may also be used to determine the control signal. In an embodiment, a turbine is controlled by a first DMC and a boiler is controlled by a second DMC, and the control signals generated by the first and the second DMCs are used in conjunction to control the generated load. Techniques to move the power generating system from Proportional-Integral-Derivative based control to model-based control are also disclosed. | ||||||
| 173 | Boiler control system | US12045294 | 2008-03-10 | US08230825B2 | 2012-07-31 | Warren G. Knorr, Jr. |
| A boiler control system for efficiently controlling the operation of a packaged boiler is provided. The system includes a combustion air control system, a fuel control system, a flue gas sensing system, and a boiler controller. The boiler controller is in operative communication with the combustion air control system, fuel control system, and the flue gas sensing system. Based upon a system demand, the boiler controller controls coarse-level operation of the combustion air control system and the fuel control system. The flue gas sensing system includes an oxygen sensor and a flue gas differential sensor that senses a change in a characteristic of the flue gas. When the flue gas differential sensor senses a change in the flue gas characteristic that meets a flue gas differential setpoint, the boiler controller controls fine-level operation of the combustion air control system to efficiently control the amount of oxygen in the flue gas. | ||||||
| 174 | Geared boiler feed pump drive | US12330310 | 2008-12-08 | US08028526B2 | 2011-10-04 | Melbourne F. Giberson |
| A geared fluid drive arrangement in which a constant speed motor is used to start a “full-size” boiler feed pump, and is able to operate the pump at a limited speed and correspondingly limited power adequate to fill, pressurize and feed water to a boiler such as would be used for an electrical generating plant to start-up and to operate stably at part load, but not necessarily full load. After the boiler is operating stably, steam from the boiler or from an extraction point of the main turbine is admitted to a mechanical drive steam turbine in order to drive the same “full-size” pump to the normal operating range. | ||||||
| 175 | Pulverized Coal Burning Boiler | US12594997 | 2008-04-11 | US20110197831A1 | 2011-08-18 | Noriyuki Ohyatsu; Hidehisa Yoshizako; Katsumi Shimohira; Hitoshi Okimura; Seishi Miyake |
| A pulverized coal burning boiler is provided, which reduces an air-excess ratio thereby to reduce the emission of unburned contents such as CO. The pulverized coal burning boiler includes a pulverized coal feed measuring device for measuring the feeding rates of the pulverized coal to be conveyed through coal feeding pipes, individually, and a control device for calculating the burning air feeding rates to match the pulverized coal feeding rates thereby to send a control command signal to burning air feed adjusting device, so that a burner air ratio set by a burner air ratio setting device may be kept on the basis of both the pulverized coal feeding rate, which is measured by the pulverized coal feed measuring device, and the burning air feeding rate, which is measured by the burning air feeding rate measuring device and fed to a pulverized coal burner connected to the coal feeding pipes. | ||||||
| 176 | REHEAT BOILER AND GAS TEMPERATURE CONTROLLING METHOD OF REHEAT BOILER | US12682354 | 2008-06-06 | US20100236501A1 | 2010-09-23 | Junji Imada; Isao Uchida |
| A reheat boiler according to the present invention includes a main boiler configured to make combustion gas originating from combustion in a burner flow from a furnace (102) and pass through a super heater and an evaporation tube bank, a reheat furnace (108) including a reheat burner (107) provided downstream of the evaporation tube bank, and a reheater (109) provided on the upper side of the reheat furnace (108), and also includes a combustion air supply portion (12) that is provided at a position opposite to the reheat burner (107) in the reheat furnace (108) to supply a part of the combustion air as combustion air (11b). By making combustion gas (107a) and the combustion air (11b) collide head-on to facilitate mixing of the combustion gas (107a) with the combustion air (11b), the flow patterns of the combustion gas are changed, whereby temperature unevenness of the combustion gas (107a) at the outlet of the reheat furnace (108) is reduced. | ||||||
| 177 | METHOD FOR OPERATING A STEAM TURBINE POWER PLANT AND ALSO DEVICE FOR GENERATING STEAM | US12600332 | 2008-04-12 | US20100212320A1 | 2010-08-26 | Ditmar Block; Hans-Joachim Klutz |
| The invention refers to a method for operating a steam turbine power plant, and also a device for generating steam for the purpose of power generation.The method for operating a steam turbine power plant comprises at least one steam generator which is fired with a solid, granular fuel, for example with brown coal, wherein the fuel is first subject to an indirect drying in a fluidized bed drier and the fluidized bed drier is at least partially heated with steam from the water-steam cycle of the steam generator. The method is characterized in that temperature controlling in the drier is carried out in two stages in dependence upon the moisture content of the fuel, wherein first of all the temperature of the fluidized bed drier is controlled via the steam pressure of the heating steam and downstream of this controlling, a controlling of the superheating temperature of the heating steam is carried out in dependence upon the steam pressure. | ||||||
| 178 | System and method for producing and delivering vapor | US11349068 | 2006-02-07 | US07680399B2 | 2010-03-16 | Daryl Buchanan; Faisal Tariq; Hai Mei; Stuart Tison |
| Systems and methods for producing and delivering vapor are disclosed. A vaporizer tank containing a liquid may be heated such that liquid within the tank is heated and vapor generated. The flow of this vapor to a destination may then be regulated. Embodiments of the present invention may control the temperature of this liquid such that a saturated vapor condition is substantially maintained in the vaporizer tank. The vaporizer tank is coupled to a mass flow controller which regulates the delivery of the vapor to downstream components. By substantially maintaining the saturated vapor condition within the vaporizer tank the pressure of vapor at the mass flow controller can be substantially maintained and a stable and consistent flow rate of vapor achieved. | ||||||
| 179 | WATER RECIRCULATION SYSTEM FOR BOILER BACKEND GAS TEMPERATURE CONTROL | US11693913 | 2007-03-30 | US20080236516A1 | 2008-10-02 | Danny E. Gelbar |
| A water recirculation system for a steam power plant includes a tapoff line which receives water from a downcomer, and an economizer link which receives water from the tapoff line and transports the water to an economizer. | ||||||
| 180 | Increasing boiler output with oxygen | US11480832 | 2006-07-06 | US20080006188A1 | 2008-01-10 | Kuang Tsai Wu; Hisashi Kobayashi; Geoffrey Bruce Tuson; Lawrence E. Bool |
| A fuel-fired steam generation apparatus such as a boiler can produce steam at a rate higher than the maximum rate at which it can produce steam using air as the only source of oxygen for combustion, by combusting the fuel with oxidant having a higher oxygen content than air but feeding the oxidant at a volumetric flow rate lower than the rate at which maximum steam production is obtained with air as the only source of oxygen for combustion. | ||||||
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