CN105043159B - A kind of steam condenser cartridge igniter monitoring system and its monitoring method - Google Patents
A kind of steam condenser cartridge igniter monitoring system and its monitoring method Download PDFInfo
- Publication number
- CN105043159B CN105043159B CN201510443821.7A CN201510443821A CN105043159B CN 105043159 B CN105043159 B CN 105043159B CN 201510443821 A CN201510443821 A CN 201510443821A CN 105043159 B CN105043159 B CN 105043159B
- Authority
- CN
- China
- Prior art keywords
- steam
- steam condenser
- power plant
- temperature sensor
- dcs system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of steam condenser cartridge igniter monitoring system and its monitoring method, belong to power plant auxiliary machine field, monitoring system sets temperature sensor T1, T2 on the steam import and export position of steam condenser, feedwater import and export sets temperature sensor T3, T4 on position, and temperature sensor T1, T2, T3 and T4 remote transfer signal is respectively connected to the Power Plant DCS System.Monitoring method is to determine steam temperature difference controlling value △ T1, steam condenser solution train value △ T2 and water-feeding difference controlling value △ t, and each value is inputted into Power Plant DCS System as Rule of judgment, following temperature difference is judged using DCS system and actuating signal is sent.The present invention is not influenceed by Steam Cooler System arrangement, and the high-pressure heater by its connection is not influenceed, it is not required that regulating valve and level measurement device, and temperature sensor reliability is high, detects ageing strong, good economy performance.
Description
Technical field
The invention belongs to power plant auxiliary machine field, more particularly to steam condenser.
Background technology
Steam condenser is a kind of heat exchanger of the feedwater in the degree of superheat heating tube using steam, is employed substantial amounts of
Heat exchanger tube, due to factors such as material, design, manufacture, installation, operations, is likely to result in indivedual heat exchanger tube boosters.Once it is a small amount of quick-fried
Pipe is not found in time, and other pipes near booster position can be caused to be fed water and wash away rupture, cause more large area pipe to let out
Leakage, influences steam condenser heat exchange efficiency, reduction power plant heat regenerative system economy, while influenceing equipment safety so that the equipment longevity
Life shortens.
Current Steam Cooler System arrangement mainly has two kinds of forms, a kind of each booster monitoring scheme of correspondence.
1. steam condenser is directly connected using emergent drain pipeline with corresponding high-pressure heater, now work as steam condenser
During generation booster, the hydrophobic of steam condenser shell-side will be dredged to corresponding high-pressure heater by drain water piping, cause the height to add
Shell-side water level steeply rises, and automatically opens up the high emergency drain valve added.
The deficiency that the program is present：This programme can cause corresponding high-pressure heater water level to rise, and influence its safety, same to phase
Answer high-pressure heater itself booster will also result in its water level rising, so can not accurately judge steam condenser booster or its
Corresponding high-pressure heater booster.Even if steam condenser booster, steam condenser shell-side is run still in without water level, routine is used
Level sensing means can not further diagnose steam condenser whether booster.
2. steam condenser is dredged to condenser (or flash vessel), if steam condenser quick-fried provided with emergency drain valve and by hydrophobic
Pipe, condensate is full of system pipeline, is then lifted out the hydrophobic water level of steam condenser shell-side, causes steam condenser liquid-level switch to move
Make, open emergency drain valve and drain ponding.
The deficiency that the program is present：
A. system cost is high.Detection protection system needs increase emergent drain valve and its shut-off valve, and liquid-level switch is surveyed
Device and gauge valve are measured, system pipeline is longer.
The delay of b valve events is long.When steam condenser heat exchanger tube just starts, feed water leakage rate very little, hydrophobic to be slowly full of
System pipeline, then could slowly lift steam condenser shell-side water level causes valve event, and whole detection process is very long.
The content of the invention
It is an object of the invention to：A kind of steam condenser cartridge igniter monitoring system and its monitoring method are proposed, passes through working medium
Temperature difference monitoring system judge steam condenser whether booster, not by its steam downstream high-pressure heater accident impact, also do not steamed
Vapour chiller system arrangement form is limited, and is improved the degree of accuracy of steam condenser booster detection, is saved emergency drain valve, water
The device such as level measuring arrangement and instrument valve, reduces equipment manufacturing cost.And thermometric instruments reliability is higher, it is economical more
It is good, device security is finally improved, and reduce equipment total cost.Using working medium difference variation amplitude is big, the spy that the response time is fast
Point, substantially increases the ageing of steam condenser booster detection.
The object of the invention is realized by following technical proposals：
A kind of steam condenser cartridge igniter monitoring system, including Power Plant DCS System, and provided with steam import and export and feedwater
The steam condenser of import and export, in addition to temperature sensor and off-the-line control device located at steam condenser, the steam are cold
But set on the steam inlet position of device and temperature sensor T2, feed-water inlet are set on temperature sensor T1, steam (vapor) outlet position
Set on position and temperature sensor T4, described temperature sensor T1, T2, T3 are set on temperature sensor T3, feedwater outlet position
The Power Plant DCS System is respectively connected to T4 remote transfer signals, the Power Plant DCS System is also electrically connected to the islanding control dress
Put, to control the steam condenser automatic parallel off.
The Power Plant DCS System refers to Distributed Control System/Distributed Control System.
A kind of monitoring method of use dedicated steam cooler cartridge igniter monitoring system, is characterized in particular in：
1), under steam condenser normal operating conditions, steam temperature difference controlling value △ is determined according to each operating mode heat balance diagram
T1, steam condenser solution train value △ T2 and water-feeding difference controlling value △ t, and each value is inputted into Power Plant DCS as Rule of judgment
System；
Wherein, its T1-T2 theoretical value is calculated respectively according to each operating mode heat balance diagram, it is △ T1 to take wherein maximum, and
Take △ T2=△ T1+30 DEG C, △ t=0 DEG C；
2), following temperature difference is judged using DCS system and actuating signal is sent：
A, as temperature T1-T2 >=△ T1 that temperature sensor T1 and T2 are measured, Power Plant DCS System send warning message,
If during temperature T4-T3≤△ t that temperature sensor T4 and T3 are measured, Power Plant DCS System sends booster information；
B, as T1-T2 >=△ T2, Power Plant DCS System sends a signal to islanding control device so that steam condenser from
Dynamic off-the-line.
Alternatively, the operating mode heat balance diagram includes but is not limited to operating mode VWO (valve widely open conditions/Valve Wide
Open condition), TMCR (steam turbine maximum continuous rating operating modes/Turbine Maximum Continuous Rating
Condition), TRL (declared working condition or nameplate operating mode/Turbine Rating Load condition), THA (steam turbine heat
Consumption ensures operating mode/Turbine Heat Acceptance condition), (thermal loss of steam turbine ensures duty parameter to 75%THA
75%), 50%THA the 50% of duty parameter (thermal loss of steam turbine ensure), (thermal loss of steam turbine ensures duty parameter to 40%THA
40%), 30%THA the 30% of duty parameter (thermal loss of steam turbine ensure).
Foregoing main scheme of the invention and its each further selection scheme can form multiple schemes with independent assortment, be this
The scheme that invention can be used and is claimed：Such as the present invention, each selection can be with other selection any combination, people in the art
Member can understand there are multiple combinations after the present invention program is understood according to prior art and common knowledge, be claimed by the present invention
Technical scheme, exhaustion is not done herein.
The course of work is：Steam condenser is a kind of heat exchanger of the feedwater in the degree of superheat heating tube using steam,
Under normal operation, steam heat is absorbed and cooled by feedwater, therefore steam exit temperature will be less than steam inlet temperature, both
Between exist a difference, while the controlling value △ T1 based on this normal condition of determination one；Risen likewise, feedwater absorbs after steam heat
Temperature, feedwater outlet temperature will be above feed-water intake temperature, between the two there is also a difference, while based on this normal condition of determination one
Controlling value △ t.And when occurring booster, the feedwater leakage in heat exchanger tube, the compromised feedwater of steam heat largely absorbs, caused
The steam import and export temperature difference will be above the temperature difference under normal circumstances, and then be less than the temperature difference under normal circumstances to the water entrance temperature difference,
And as T1-T2 >=△ T1, can determine whether that DCS sends warning message and reminds power plant operations staff to note, and enters one to occur exception
, can anticipation steam condenser booster when walking T4-T3≤△ t.When T1 and T2 differences exceed steam condenser solution train value △ T2,
DCS sends a signal to islanding control device so that steam condenser automatic parallel off.
Beneficial effects of the present invention：
1. realize that steam condenser booster detecting system is not influenceed by its system arrangement, not by its steam downstream hyperbaric heating
The accident impact of device, improves the adaptability of steam cold but booster detection and preparatory, adds the security of equipment.
2. using cheap temperature sensor, more expensive emergency drain valve, level measurement device and instrument are saved
Valve, improves the economy of system.
3. improving the ageing of steam condenser booster detection, the time that steam condenser is run in spite of illness is shortened, is improved
The stability of the service life of steam condenser and whole power plant's heat regenerative system.
Brief description of the drawings
Fig. 1 is the device schematic flow sheet of the embodiment of the present invention；
Wherein 1 is temperature sensor T1, and 2 be temperature sensor T2, and 3 be temperature sensor T3, and 4 be temperature sensor T4,5
For Power Plant DCS System.
Embodiment
Following non-limiting examples are used to illustrate the present invention.
1. with reference to shown in Fig. 1, a kind of steam condenser cartridge igniter monitoring system, for certain 1 × 1000MW unit engineering, bag
Include：Steam inlet position sets temperature sensor T1 (figure number 1), and steam (vapor) outlet position sets temperature sensor T2 (accompanying drawings
Sequence number 2), feed-water inlet position sets temperature sensor T3 (figure number 3), and feedwater outlet position sets temperature sensor T4
(figure number 4), T1, T2, T3 and T4 remote transfer signal access Power Plant DCS System (figure number 5).
2. steam temperature difference controlling value △ T1, △ T2 and water-feeding difference controlling value △ t are determined according to each operating mode heat balance diagram,
And DCS system is inputted using this value as Rule of judgment, each △ T1, △ T2 and △ t determine that method is as follows：
Calculate its T1-T2 theoretical value respectively according to each operating mode heat balance diagram, it is △ T1 to take wherein maximum, and takes △ T2
=△ T1+30 DEG C, △ t=0 DEG C；
Obtain following table according to each operating mode heat balance diagram (can show steam inlet T1 and steam (vapor) outlet on each operating mode heat balance diagram
Temperature T2 theoretical value, makes a copy of the value and is directly calculated)：
| VWO | TMCR | TRL | THA | 75%THA | 50%THA | 40%THA | 30%THA | |
| T1-T2 | 175.3 | 177.6 | 177 | 181.5 | 203.4 | 230 | 224.5 | 221.4 |
It can be obtained according to upper table：△ T1=230 DEG C；
According to △ T1=230 DEG C, △ T2=260 DEG C are taken；
Take △ t=0 DEG C.
3. following temperature difference is judged using DCS system and actuating signal is sent：
A, as T1-T2 >=△ T1, alarm.DCS sends warning message and reminds power plant operations staff to note, if T4-T3≤
During △ t, steam condenser booster is can determine whether, as early as possible off-the-line steam condenser.
B, as T1-T2 >=△ T2, difference exceed steam condenser solution train value when, DCS send a signal to islanding control dress
Put so that steam condenser automatic parallel off.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (2)
1. a kind of monitoring method of use steam condenser cartridge igniter monitoring system, steam condenser cartridge igniter monitoring system includes power plant
DCS system, and the steam condenser provided with steam import and export and feedwater import and export, in addition to located at the temperature of steam condenser
Spend and temperature sensor T1 is set on sensor and off-the-line control device, the steam inlet position of the steam condenser, steam goes out
Set to set on temperature sensor T2, feed-water inlet position on mouth position and temperature is set on temperature sensor T3, feedwater outlet position
Sensor T4 is spent, temperature sensor T1, T2, T3 and T4 remote transfer signal is respectively connected to the Power Plant DCS System, the power plant
DCS system is also electrically connected to the islanding control device, to control the steam condenser automatic parallel off, it is characterised in that：
1）, under steam condenser normal operating conditions, according to each operating mode heat balance diagram determine steam temperature difference controlling value △ T1, steaming
Vapour cooler solution train value △ T2 and water-feeding difference controlling value △ t, and each value is inputted into Power Plant DCS System as Rule of judgment；
Wherein, its T1-T2 theoretical value is calculated respectively according to each operating mode heat balance diagram, it is △ T1 to take wherein maximum, and takes △
T2=△ T1+30 DEG C, △ t=0 DEG C；
2）, following temperature difference is judged using DCS system and actuating signal is sent：
A, as temperature T1-T2 >=△ T1 that temperature sensor T1 and T2 are measured, Power Plant DCS System send warning message, if warm
During temperature T4-T3≤△ t that degree sensor T4 and T3 are measured, Power Plant DCS System sends booster information；
B, as T1-T2 >=△ T2, Power Plant DCS System sends a signal to islanding control device so that steam condenser is solved automatically
Row.
2. as claimed in claim 1 using the monitoring method of steam condenser cartridge igniter monitoring system, it is characterised in that：The work
Condition heat balance diagram includes but is not limited to operating mode VWO, TMCR, TRL, THA, 75%THA, 50%THA, 40%THA, 30%THA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510443821.7A CN105043159B (en) | 2015-07-24 | 2015-07-24 | A kind of steam condenser cartridge igniter monitoring system and its monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510443821.7A CN105043159B (en) | 2015-07-24 | 2015-07-24 | A kind of steam condenser cartridge igniter monitoring system and its monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105043159A CN105043159A (en) | 2015-11-11 |
| CN105043159B true CN105043159B (en) | 2017-11-07 |
Family
ID=54449905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510443821.7A Active CN105043159B (en) | 2015-07-24 | 2015-07-24 | A kind of steam condenser cartridge igniter monitoring system and its monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105043159B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382842A (en) * | 2016-10-25 | 2017-02-08 | 广东工业大学 | Pipe explosion monitoring method and system for cement plant waste heat recovery multi-loop heat exchanger |
| CN111981892B (en) * | 2020-07-31 | 2022-06-07 | 国网山东省电力公司电力科学研究院 | Method for judging leakage point of surface type steam-water heat exchanger |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3771596A (en) * | 1971-10-27 | 1973-11-13 | Babcock & Wilcox Co | Industrial technique |
| CN101329061A (en) * | 2007-06-18 | 2008-12-24 | 高利斌 | Protection for preventing heat-engine plant reheater cold segment pipe from generating water impact |
| CN102425777A (en) * | 2011-11-11 | 2012-04-25 | 上海电力学院 | Method of triggering fault diagnosis through high alarm condition of superheated steam temperature |
| CN202501777U (en) * | 2012-03-16 | 2012-10-24 | 淮安市引源节能设备科技有限公司 | Intelligent modular water heating device using waste heat energy of boiler flue gas |
| CN203148304U (en) * | 2013-03-27 | 2013-08-21 | 张家港市科华化工装备制造有限公司 | Cooler with control device |
| CN103573303A (en) * | 2013-11-12 | 2014-02-12 | 中国电力工程顾问集团西南电力设计院 | Thermal power plant generator set adopting superheat to control drain valve on main steam pipeline |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204854464U (en) * | 2015-07-24 | 2015-12-09 | 东方电气集团东方锅炉股份有限公司 | Steam cooling ware booster monitored control system |
-
2015
- 2015-07-24 CN CN201510443821.7A patent/CN105043159B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3771596A (en) * | 1971-10-27 | 1973-11-13 | Babcock & Wilcox Co | Industrial technique |
| CN101329061A (en) * | 2007-06-18 | 2008-12-24 | 高利斌 | Protection for preventing heat-engine plant reheater cold segment pipe from generating water impact |
| CN102425777A (en) * | 2011-11-11 | 2012-04-25 | 上海电力学院 | Method of triggering fault diagnosis through high alarm condition of superheated steam temperature |
| CN202501777U (en) * | 2012-03-16 | 2012-10-24 | 淮安市引源节能设备科技有限公司 | Intelligent modular water heating device using waste heat energy of boiler flue gas |
| CN203148304U (en) * | 2013-03-27 | 2013-08-21 | 张家港市科华化工装备制造有限公司 | Cooler with control device |
| CN103573303A (en) * | 2013-11-12 | 2014-02-12 | 中国电力工程顾问集团西南电力设计院 | Thermal power plant generator set adopting superheat to control drain valve on main steam pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105043159A (en) | 2015-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100437015C (en) | On-line monitoring method for variation of through-flow gap of steam turbine | |
| US5794446A (en) | Power plant performance management systems and methods | |
| CN101825502B (en) | Effluent and drain temperature measurement and calculation method of heater with drain cooler on steam turbine | |
| CN105043159B (en) | A kind of steam condenser cartridge igniter monitoring system and its monitoring method | |
| CN102313471A (en) | The function supervision of cooling system and/or control method and corresponding cooling | |
| CN211454603U (en) | Low-pressure cylinder efficiency measuring and calculating system | |
| CN100368779C (en) | Safety on-line monitor for water circulation of boiler | |
| JPH07270576A (en) | Water level measuring apparatus for reactor | |
| CN204854464U (en) | Steam cooling ware booster monitored control system | |
| CN101825503B (en) | Effluent and drain temperature measurement and calculation method of steam turbine surface-type heater | |
| CN103811082B (en) | Nuclear power station condenser system and troubleshooting methodology thereof and device | |
| CN106224931B (en) | The determination methods of the built-in waste heat boiler water leakage of sintering machine large flue | |
| CN106016243A (en) | Energy-saving control device of small boiler of solar hot water deaerator | |
| CN113218596B (en) | Leakage detection method and device for #4 low-pressure heater of coal-fired power generation unit | |
| JP2012137450A (en) | Cogeneration nuclear power generation system | |
| CN104990060B (en) | A kind of Steam Cooler System passive resistance protection device | |
| JPS6228395B2 (en) | ||
| US4087797A (en) | System for detecting water in steam pipes | |
| US4753770A (en) | Control system for heat supply as hot water from nuclear power plants equipped with condensation units | |
| CN204829865U (en) | Active protection device of steam cooling ware system non - | |
| KR100794393B1 (en) | Pipe installing structure of pressure differential control valve | |
| EP1770716A2 (en) | Improved on-line steam flow measurement device and method | |
| CN206232965U (en) | A kind of dyeing and finishing steam buffer system | |
| CN214120002U (en) | Early warning system applied to resident heating steam boiler | |
| CN210625888U (en) | Ascending tube evaporator monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |