US5791147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power plant performance management systems and methods
Assignee: Basic Resources Inc
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Filing: 1996-10-28
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Granted: 1998-08-11
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Expires: 2016-10-28
Abstract
Abstract A steam powered electric power generating station to provide electricity comprises a steam turbine positioned in a steam turbine shell, equipment, such as a heater, a first and a second temperature detectors, and a computer. The steam turbine has necessary blades and a shaft to turn an electrical generator to create electricity. The steam turbine shell mechanically coupled to receive steam to turn the at least one blade steam turbine. The equipment is mechanically coupled to the steam turbine shell to receive steam from the steam turbine shell and receives feed water through an entry port and releases feed water through an exit port. The first temperature detector is positioned to detect a first temperature of the feed water prior to entering the equipment via the entry port. The second temperature detector is positioned to detect a second temperature of the feed water after exiting the equipment via the exit port. The computer is electrically coupled to the first temperature detector and to the second temperature detector and compares the first temperature to the second temperature to generate a temperature difference. Related processes comprise detecting a first temperature of feed water immediately before the feed water has exited the heating equipment; detecting a second temperature of the feed water immediately after the feed water has entered the heating equipment; (c) comparing the first temperature to the second temperature to generate a temperature difference between the first temperature and the second temperature; (d) comparing the temperature difference with a preferred temperature difference to determine whether the temperature difference is within an approved range from the preferred temperature difference; and (e) generating a warning signal to alert the power plant operator if the temperature difference is not within the approved range.
Inventors
- 👤 James N. Earley
- 👤 Jeffrey D. Hooper
- 👤 Billy H. Stigall
- 👤 John S. Stinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:22
CPC Classifications
F; F22; F22D; F22D1/00; F22D1/32; F22D1/325
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
254 words
A steam powered electric power generating station to provide electricity, comprising: (a) a burner to process fuel to generate heat; (b) a boiler which is heated by said heat to convert feed water into steam; (c) a steam turbine that is connected to said boiler via a first steam line extending from said boiler to said steam turbine to receive said steam created by said boiler, said steam turns said steam turbine, said steam turbine powers an electrical generator, said electrical generator generates said electricity; (d) a heater to heat said feed water generated from said steam remaining after said steam is condensed after turning said steam turbine, said heater to receive a portion of said steam from said steam turbine via a second steam line extending from said steam turbine to said heater to heat said feed water; (e) a first temperature detector positioned to detect a first temperature of said feed water prior to being heated by said heater; (f) a second temperature detector positioned to detect a second temperature of said feed water after being heated by said heater; and (g) a computer electrically coupled to said first temperature detector to receive said first temperature and to said second temperature detector to receive said second temperature, said computer compares said first temperature to said second temperature to generate a temperature difference and compares said temperature difference with a preferred temperature difference to determine whether excess amounts of condensation are present in said heater and in danger of reaching said steam turbine.
Claim 2
Dependent Claim
254 words
A steam powered electric power generating station to provide electricity, comprising: (a) a burner to process fuel to generate heat; (b) a boiler which is heated by said heat to convert feed water into steam; (c) a steam turbine that is connected to said boiler via a first steam line extending from said boiler to said steam turbine to receive said steam created by said boiler, said steam turns said steam turbine, said steam turbine powers an electrical generator, said electrical generator generates said electricity; (d) a heater to heat said feed water generated from said steam remaining after said steam is condensed after turning said steam turbine, said heater to receive a portion of said steam from said steam turbine via a second steam line extending from said steam turbine to said heater to heat said feed water; (e) a first temperature detector positioned to detect a first temperature of said feed water prior to being heated by said heater; (f) a second temperature detector positioned to detect a second temperature of said feed water after being heated by said heater; and (g) a computer electrically coupled to said first temperature detector to receive said first temperature and to said second temperature detector to receive said second temperature, said computer compares said first temperature to said second temperature to generate a temperature difference and compares said temperature difference with a preferred temperature difference to determine whether excess amounts of condensation are present in said heater and in danger of reaching said steam turbine.
Claim 3
Dependent Claim
37 words
The steam powered electric power generating station of claim 1, wherein said computer compares said temperature difference with a second preferred temperature difference to determine whether said heater has an excess amount of condensation inside said heater.
Claim 4
Dependent Claim
34 words
The steam powered electric power generating station of claim 1, wherein said fuel is pulverized coal and said burner is adapted to burn said pulverized coal to process said fuel to generate said heat.
Claim 5
Dependent Claim
32 words
The steam powered electric power generating station of claim 1, wherein said fuel is lignite and said burner is adapted to bum said lignite to process said fuel to generate said heat.
Claim 6
Dependent Claim
81 words
The steam powered electrical power generating station of claim 1, further comprising: (h) a first turbine temperature detector in said steam turbine electrically coupled to said computer, said first turbine temperature detector in said steam turbine activated when condensation in said steam turbine reaches a first turbine temperature, said computer monitors said turbine temperature level detector and triggers a warning signal to a plant operator monitoring said steam powered electrical power generating station when said first turbine temperature detector is activated.
Claim 7
Dependent Claim
73 words
The steam powered electrical power generating station of claim 1, further comprising: (h) a first level detector in said heater electrically coupled to said computer, said first level detector in said heater activated when condensation in said heater reaches a first level, said computer monitors said first level detector and triggers a warning signal to a plant operator monitoring said steam powered electrical power generating station when said first level detector is activated.
Claim 8
Dependent Claim
87 words
The steam powered electrical power generating station of claim 1, further comprising; (h) a third temperature detector positioned in said second steam line to detect a temperature of said steam being transported to said heater via said second steam line, said third temperature detector electrically coupled to said computer, said computer compares a third temperature detected from said third temperature detector to a standard temperature to determine if steam is being transported via said second steam line and whether condensation is present in said second steam line.
Claim 9
Dependent Claim
24 words
The steam powered electrical power generating station of claim 1, wherein said first temperature detector periodically detects said first temperature at a first interval.
Claim 10
Dependent Claim
17 words
The steam powered electrical power generating station of claim 8, wherein said first interval is two seconds.
Claim 11
Dependent Claim
24 words
The steam powered electrical power generating station of claim 8, wherein said second temperature detector periodically detects said second temperature at a second interval.
Claim 12
Dependent Claim
24 words
The steam powered electrical power generating station of claim 10, wherein said first interval and said second interval are approximately equal to one another.
Claim 13
Dependent Claim
259 words
A steam powered electric power generating station to provide electricity, comprising: (a) a steam turbine positioned in a steam turbine shell, said steam turbine having at least one blade and a shaft joined to said at least one blade, said shaft adapted to turn an electrical generator to create electricity, said steam turbine shell adapted to receive steam to turn said at least one blade and said shaft of said steam turbine via a first steam line connected to said steam turbine shell; (b) equipment connected to said steam turbine shell to receive steam from said steam turbine shell via a second steam line extending from said steam turbine shell to said equipment, said equipment receives feed water through an entry port and releases feed heater through an exit port, said equipment performs certain operations on said feed water; (c) a first temperature detector positioned to detect a first temperature of said feed water prior to entering said equipment via said entry port; (d) a second temperature detector positioned to detect a second temperature of said feed water after exiting said equipment via said exit port; and (e) a computer electrically coupled to said first temperature detector to receive said first temperature and to said second temperature detector to receive said second temperature, said computer compares said first temperature to said second temperature to generate a temperature difference and compares said temperature difference with a standard temperature difference to determine whether excess amounts of condensation are present in said equipment and In danger of entering said steam turbine shell.
Claim 14
Dependent Claim
259 words
A steam powered electric power generating station to provide electricity, comprising: (a) a steam turbine positioned in a steam turbine shell, said steam turbine having at least one blade and a shaft joined to said at least one blade, said shaft adapted to turn an electrical generator to create electricity, said steam turbine shell adapted to receive steam to turn said at least one blade and said shaft of said steam turbine via a first steam line connected to said steam turbine shell; (b) equipment connected to said steam turbine shell to receive steam from said steam turbine shell via a second steam line extending from said steam turbine shell to said equipment, said equipment receives feed water through an entry port and releases feed heater through an exit port, said equipment performs certain operations on said feed water; (c) a first temperature detector positioned to detect a first temperature of said feed water prior to entering said equipment via said entry port; (d) a second temperature detector positioned to detect a second temperature of said feed water after exiting said equipment via said exit port; and (e) a computer electrically coupled to said first temperature detector to receive said first temperature and to said second temperature detector to receive said second temperature, said computer compares said first temperature to said second temperature to generate a temperature difference and compares said temperature difference with a standard temperature difference to determine whether excess amounts of condensation are present in said equipment and In danger of entering said steam turbine shell.
Claim 15
Dependent Claim
21 words
The steam powered electric power generating station of claim 12, wherein said computer also determines whether said equipment is operating correctly.
Claim 16
Dependent Claim
52 words
The steam powered electric power generating station of claim 12, further comprising: (f) a burner to process fuel to generate heat; and (g) a boiler which is heated be said heat to convert feed water into said steam, wherein said steam is transported to said steam turbine via said first steam line.
Claim 17
Dependent Claim
34 words
The steam powered electric power generating station of claim 14, wherein said fuel is pulverized coal and said burner is adapted to bum said pulverized coal to process said fuel to generate said heat.
Claim 18
Dependent Claim
32 words
The steam powered electric power generating station of claim 14, wherein said fuel is lignite and said burner is adapted to bum said lignite to process said fuel to generate said heat.
Claim 19
Dependent Claim
87 words
The steam powered electrical power generating station of claim 12, further comprising: (h) a first turbine temperature detector in said steam turbine shell that is electrically coupled to said computer, said first turbine temperature detector in said steam turbine shell is activated when condensation in said steam turbine shell reaches a first turbine temperature, said computer monitors said first turbine temperature detector and triggers a warning signal to a plant operator monitoring said steam powered electrical power generating station when said first turbine temperature detector is activated.
Claim 20
Dependent Claim
76 words
The steam powered electrical power generating station of claim 12, further comprising: (h) a first level detector in said equipment that is electrically coupled to said computer, said first level detector in said equipment is activated when condensation in said equipment reaches a first level, said computer monitors said first level detector and triggers a warning signal to a plant operator monitoring said steam powered electrical power generating station when said first level detector is activated.
Claim 21
Dependent Claim
90 words
The steam powered electrical power generating station of claim 12, further comprising: (h) a third temperature detector positioned in said second steam line to detect a temperature of said steam being transported to said equipment from said steam turbine shell via said second steam line, said third temperature detector electrically coupled to said computer, so that said computer receives said third temperature, said computer compares a third temperature detected from said third temperature detector to a standard temperature to determine whether or not condensation is in said second steam line.
Claim 22
Dependent Claim
35 words
The steam powered electrical power generating station of claim 19, further wherein said computer, monitors said third temperature and triggers a warning signal to a plant operator monitoring said steam powered electrical power generating station.
Claim 23
Dependent Claim
24 words
The steam powered electrical power generating station of claim 12, wherein said first temperature detector periodically detects said first temperature at a first interval.
Claim 24
Dependent Claim
17 words
The steam powered electrical power generating station of claim 21, wherein said first interval is two seconds.
Claim 25
Dependent Claim
24 words
The steam powered electrical power generating station of claim 21, wherein said second temperature detector periodically detects said second temperature at a second interval.
Claim 26
Dependent Claim
24 words
The steam powered electrical power generating station of claim 23, wherein said first interval and said second interval are approximately equal to one another.
Claim 27
Dependent Claim
36 words
The steam powered electrical power generating station of claim 12, wherein said equipment is selected from a low pressure feed water heater, a high pressure feed water heater, and a deaerator, and an auxiliary coolers condenser.
Claim 28
Dependent Claim
131 words
A process of alerting the power plant operator of a hazardous condition, comprising: (a) detecting a first temperature of feed water immediately before said feed water enters heating equipment; (b) detecting a second temperature of said feed water immediately after said feed water exits said heating equipment; (c) comparing said first temperature to said second temperature to generate a temperature difference between said first temperature and said second temperature; (d) comparing said temperature difference with a preferred temperature difference to determine whether excess amounts of condensation are present in said heating equipment and in danger of reaching said steam turbine, and (e) generating a warning signal to alert said power plant operator that excess amounts of condensation are present in said heating equipment and in danger of reaching said steam turbine.
Claim 29
Dependent Claim
131 words
A process of alerting the power plant operator of a hazardous condition, comprising: (a) detecting a first temperature of feed water immediately before said feed water enters heating equipment; (b) detecting a second temperature of said feed water immediately after said feed water exits said heating equipment; (c) comparing said first temperature to said second temperature to generate a temperature difference between said first temperature and said second temperature; (d) comparing said temperature difference with a preferred temperature difference to determine whether excess amounts of condensation are present in said heating equipment and in danger of reaching said steam turbine, and (e) generating a warning signal to alert said power plant operator that excess amounts of condensation are present in said heating equipment and in danger of reaching said steam turbine.
Claim 30
Dependent Claim
70 words
The process of claim 26, further comprising: (f) detecting a condensation level within said heating equipment; (g) comparing said condensation level with a preferred condensation level to determine whether said condensation level exceeds said preferred condensation level to determine whether condensation is in danger of reaching said steam turbine; and (h) generating a warning signal to alert said power plant operator if said condensation level exceeds said preferred condensation level.
Claim 31
Dependent Claim
31 words
The process of claim 26, wherein said heating equipment utilizes steam to heat said feed water, wherein said heating equipment receives said steam from a steam turbine via a steam line.
Claim 32
Dependent Claim
57 words
The process of claim 28, further comprising: (f) detecting a third temperature of said steam in said steam line; and (g) comparing said third temperature to a standard temperature to determine if steam is being transported via said steam line and whether condensation is present in said steam line and in danger of reaching said steam turbine.
Claim 33
Dependent Claim
18 words
The process of claim 30, wherein said first interval and said second interval are equal to two seconds.
Claim 34
Dependent Claim
16 words
The process of claim 26, said preferred temperature difference is determined by modeling said heating equipment.
Claim 35
Dependent Claim
30 words
The process of claim 26, wherein said equipment is selected from a low pressure feed water heater, a high pressure feed water heater, an auxiliary cooler condenser, and a deaerator.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-10 | 2002-02-09 | 2002-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-10 | 2006-02-09 | 2006-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-10 | 2010-02-09 | 2010-08-11 | $7700.00 | Window Closed / Lapsed |