CN103335537A - Method for on-line monitoring real-time operation cleanness factor of condenser - Google Patents
Method for on-line monitoring real-time operation cleanness factor of condenser Download PDFInfo
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- CN103335537A CN103335537A CN2013102369815A CN201310236981A CN103335537A CN 103335537 A CN103335537 A CN 103335537A CN 2013102369815 A CN2013102369815 A CN 2013102369815A CN 201310236981 A CN201310236981 A CN 201310236981A CN 103335537 A CN103335537 A CN 103335537A
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Abstract
The invention relates to a method for on-line monitoring the real-time operation cleanness factor of a condenser. The method comprises the following steps: real-time operation data of a unit are collected by a data acquisition module; the received data are recoded by a real-time data collecting network and separated from external relations; original operation data of the unit are determined and processed by the real-time data processing module, data determining and averaging are performed to analogue signals, and signal rationality judgment is performed to switching value signals; the received data are calculated by a real-time operation cleanness factor computation module to obtain the thermal load and the overall heat transfer coefficient of the current condenser, so as to obtain a cleanness factor; data from the real-time data collecting network and the real-time operation cleanness factor computation module are simultaneously received by a storage server to complete classification and storage; the real-time cleanness factor and the history cleanness factors are displayed on a display screen. According to the invention, cleanness factors are showed in the forms of chart and history curve, so that the heat exchange capability of the condenser is easy to know, and a reference is provided for condenser cleaning.
Description
Technical field
The invention belongs to the thermal power generation field of energy-saving technology, especially a kind of condenser real time execution cleanliness factor on-line monitoring method.
Background technology
Condenser is one of thermal power generation unit major pant item equipment, and its main task is that turbine discharge is condensed into water and sets up and keep certain vacuum at the turbine discharge mouth.At present, to the monitoring project of condenser mainly be that the end of condenser is poor, degree of supercooling and recirculated cooling water temperature rise, these parameters can only embody the running status of condenser from macroscopic view, but can not directly reflect the quality of condenser heat exchange property.The aggregation extent of incondensable gas is the principal element that influences the condenser heat exchange property in the day-to-day operation process in the degree of fouling of condenser heat exchanger tube and the condenser, and the operation cleanliness factor of condenser has then directly reflected the degree of fouling of condenser heat exchanger tube and the aggregation extent of the interior incondensable gas of condenser.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of condenser real time execution cleanliness factor on-line monitoring method is provided.
The present invention solves its technical problem and takes following technical scheme to realize:
A kind of condenser real time execution cleanliness factor on-line monitoring method, the concrete steps of this method are as follows:
⑴ data unit operation acquisition module is from operation unit scattered control system collection of server required unit real-time running data, and real-time running data is sent to the real-time data acquisition net;
⑵ real-time data acquisition net carries out recompile to the transmission data that receive, and isolation contacts with outside other data transmission network; And the recompile result is sent to real time data processing module and data storage server;
⑶ real time data processing module is judged the original service data of unit by the data that receive and is handled, finish the judgement of data area successively and average for analog signals, then finish the signal reasonability for the switching value signal and judge, and result is sent to real time execution cleanliness factor computing module;
⑷ real time execution cleanliness factor computing module is to receiving condenser duty value and overall heat transfer coefficient value under the current operating condition of data computation operation unit, and then draw condenser real time execution cleanliness factor, and result of calculation is sent to condenser real time execution cleanliness factor monitoring system main display and data storage server;
⑸ data storage server receives the data that come from real-time data acquisition net and real time execution cleanliness factor computing module simultaneously, and finishes classification and the storage of data, for user of service's transferring and subsequent treatment historical data;
⑹ condenser real time execution cleanliness factor monitoring system main display presents real time execution cleanliness factor and the history run cleanliness factor of condenser simultaneously with the form of form and curve, and carries out alarm.
And the unit real-time running data specifically comprises among the described step ⑴: unit load, unit vacuum, condenser hotwell coolant-temperature gage, condenser recirculated water advance pressure of return water and temperature, condenser circulating water flow.
And among the described step ⑵ transmission data that receive being carried out recompile is that unit load, unit vacuum, condenser hotwell coolant-temperature gage, the condenser recirculated water that will receive advance pressure of return water and temperature, condenser circulating water flow transmission data make up П system data coding with the time data bag again.
And the judgement concrete steps of finishing data area successively for analog signals among the described step ⑶ are:
1. the height of in the real time data processing module, the setting every kind of analog signals journey scope of limiting the quantity of;
2. every kind of analog signals that the real time data processing module is received compares with the journey scope of just limiting the quantity of respectively, if in range ability, then judgment data is rationally available, if not in range ability, then judgment data is unreasonable, and carries out alarm;
3. for the data that adopt dual or multiple measuring point, after finishing the judgement of data reasonability, all measuring point datas are carried out arithmetic average, and with the end value of mean value as this measuring point.
And the concrete computational methods of condenser duty value described in the described step ⑷ are:
1. calculate the current circulating cooling water flow d of x by frequency conversion water circulating pump rotating speed
v, d
v=a * x, wherein a is known coefficient;
2. by the specific heat capacity c under the current mean temperature of recirculated cooling water
pAdvance return water temperature t with density p, circulating cooling water flow q and condenser recirculated water
1And t
2Calculate the thermic load value q of current condenser
k=ρ * d
v* c
p* (t
2-t
1).
And the concrete computational methods of overall heat transfer coefficient value described in the described step ⑷ are:
1. by the hot well coolant-temperature gage t of condenser
sCalculate the logarithmic mean temperature difference (LMTD) lmtd of condenser, lmtd=(t
2-t
1)/ln ((t
s-t
1)/(t
s-t
2));
2. the overall heat transfer coefficient k=q of condenser
k/ (a
m* lmtd), a wherein
mBe known condenser cooling surface.
And the concrete computational methods of the cleanliness factor of condenser real time execution described in the described step ⑷ are:
Condenser real time execution cleanliness factor β
c=k/ (β
t* β
m* k
0).
And the concrete sorting technique of the classification of data described in the described step ⑸ is:
1. data are divided into unit real-time running data and calculation result data, and wherein the unit real-time running data comprises: condenser hotwell coolant-temperature gage, condenser recirculated cooling water advance/and return water temperature, unit vacuum, frequency conversion water circulating pump rotating speed etc.; Calculation result data comprises: circulating cooling water flow, condenser real time execution cleanliness factor etc.;
2. because the unit real-time running data is gathered self-operating unit scattered control system (DCS) server, in the notebook data storage server, no longer preserve, only finish calculation result data with time packet stores synchronized.
And form described in the described step ⑹ comprises that specifically condenser hotwell coolant-temperature gage, condenser recirculated cooling water advance/return water temperature, unit vacuum, frequency conversion water circulating pump rotating speed, circulating cooling water flow, condenser real time execution cleanliness factor; Described curve specifically comprises the time dependent curve of unit vacuum, the time dependent curve of condenser circulating cooling water flow and the time dependent curve of condenser real time execution cleanliness factor.
Advantage of the present invention and good effect are:
The present invention links together unit real-time running data acquisition module, monitoring system real-time data acquisition net, real time data processing module, real time execution cleanliness factor computing module, data storage server, condenser real time execution cleanliness factor monitoring system key frame, constitutes condenser real time execution cleanliness factor on-line monitoring system.This system can reflect the real time execution cleanliness factor of condenser exchange capability of heat by real-time calculating, and present to the operations staff with the form of chart and history curve, can help the operations staff to understand and grasp the real time execution exchange capability of heat of condenser more, provide reference for condenser cleans in good time, strengthen the security of condenser operation.
Description of drawings
Fig. 1 is the structural representation of the inventive method application hardware.
The specific embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is further described: it is emphasized that; embodiment of the present invention is illustrative; rather than it is determinate; therefore the present invention is not limited to the embodiment described in the specific embodiment; every other embodiment that is drawn by those skilled in the art's technical scheme according to the present invention belongs to the scope of protection of the invention equally.
A kind of condenser real time execution cleanliness factor on-line monitoring method, as shown in Figure 1, the hardware system that this method is used comprises: unit real-time running data acquisition module, real-time data acquisition net, real time data processing module, real time execution cleanliness factor computing module, data storage server, condenser real time execution cleanliness factor monitoring system main display and operation unit scattered control system (DCS) server, and the concrete steps of this method are as follows:
⑴ data unit operation acquisition module is from operation unit scattered control system (DCS) collection of server required unit real-time running data, and real-time running data is sent to the real-time data acquisition net;
Wherein, the unit real-time running data specifically comprises: unit load, unit vacuum, condenser hotwell coolant-temperature gage, condenser recirculated water advance pressure of return water and temperature, condenser circulating water flow.
⑵ real-time data acquisition net carries out recompile to the transmission data that receive, and isolation contacts with outside other data transmission network; And the recompile result is sent to real time data processing module and data storage server;
Wherein, the transmission data that receive being carried out recompile is that unit load, unit vacuum, condenser hotwell coolant-temperature gage, the condenser recirculated water that will receive advance pressure of return water and temperature, condenser circulating water flow transmission data make up П system data coding with the time data bag again.
⑶ real time data processing module is judged the original service data of unit by the data that receive and is handled, finish the judgement of data area successively and average for analog signals, then finish the signal reasonability for the switching value signal and judge, and result is sent to real time execution cleanliness factor computing module;
Wherein, the judgement concrete steps of finishing data area successively for analog signals are:
1. the height of in the real time data processing module, the setting every kind of analog signals journey scope of limiting the quantity of;
2. every kind of analog signals that the real time data processing module is received compares with the journey scope of just limiting the quantity of respectively, if in range ability, then judgment data is rationally available, if not in range ability, then judgment data is unreasonable, and carries out alarm;
3. for the data that adopt dual or multiple measuring point, after finishing the judgement of data reasonability, all measuring point datas are carried out arithmetic average, and with the end value of mean value as this measuring point.
⑷ real time execution cleanliness factor computing module is to receiving condenser duty value and overall heat transfer coefficient value under the current operating condition of data computation operation unit, and then draw condenser real time execution cleanliness factor, and result of calculation is sent to condenser real time execution cleanliness factor monitoring system main display and data storage server.
Wherein, the concrete computational methods of described condenser duty value are:
1. calculate the current circulating cooling water flow d of x by frequency conversion water circulating pump rotating speed
v, d
v=a * x, wherein a is known coefficient;
2. by the specific heat capacity c under the current mean temperature of recirculated cooling water
pAdvance return water temperature t with density p, circulating cooling water flow q and condenser recirculated water
1And t
2Calculate the thermic load value q of current condenser
k=ρ * d
v* c
p* (t
2-t
1).
Wherein, the concrete computational methods of described overall heat transfer coefficient value are:
1. by the hot well coolant-temperature gage t of condenser
sCalculate the logarithmic mean temperature difference (LMTD) lmtd of condenser, lmtd=(t
2-t
1)/ln ((t
s-t
1)/(t
s-t
2));
2. the overall heat transfer coefficient k=q of condenser
k/ (a
m* lmtd), a wherein
mBe known condenser cooling surface.
Wherein, the concrete computational methods of described condenser real time execution cleanliness factor are:
Condenser real time execution cleanliness factor β
c=k/ (β
t* β
m* k
0).
⑸ data storage server receives the data that come from real-time data acquisition net and real time execution cleanliness factor computing module simultaneously, and finishes classification and the storage of data, for user of service's transferring and subsequent treatment historical data;
Wherein, the concrete sorting technique of described data classification is:
1. data are divided into unit real-time running data and calculation result data, and wherein the unit real-time running data comprises: condenser hotwell coolant-temperature gage, condenser recirculated cooling water advance/and return water temperature, unit vacuum, frequency conversion water circulating pump rotating speed etc.; Calculation result data comprises: circulating cooling water flow, condenser real time execution cleanliness factor etc.
2. because the unit real-time running data is gathered self-operating unit scattered control system (DCS) server, in the notebook data storage server, no longer preserve, only finish calculation result data with time packet stores synchronized.
⑹ condenser real time execution cleanliness factor monitoring system main display presents real time execution cleanliness factor and the history run cleanliness factor of condenser simultaneously with the form of form and curve, and carries out alarm.
Wherein, described form comprises that specifically condenser hotwell coolant-temperature gage, condenser recirculated cooling water advance/return water temperature, unit vacuum, frequency conversion water circulating pump rotating speed, circulating cooling water flow, condenser real time execution cleanliness factor etc.
Wherein, described curve specifically comprises:
1. the time dependent curve of unit vacuum,
2. the time dependent curve of condenser circulating cooling water flow;
3. the time dependent curve of condenser real time execution cleanliness factor.
The application example contrast
The inventive method has obtained application 2 330MW capacity fired power generating unit frequency conversion circulations, and the low pressure (LP) cylinder exhaust steam pressure of 2 units reduces unit net coal consumption rate 0.3g/kW.h than reducing 0.1kPa before the same period after employing the inventive method.If unit year, hours of operation calculated according to 6000 hours, then can save 594 tons of mark coal amounts separate unit 330MW capacity unit year, can save 1188 tons of mark coal amounts unit year for 2.
Claims (9)
1. condenser real time execution cleanliness factor on-line monitoring method, it is characterized in that: the concrete steps of this method are as follows:
⑴ data unit operation acquisition module is from operation unit scattered control system collection of server required unit real-time running data, and real-time running data is sent to the real-time data acquisition net;
⑵ real-time data acquisition net carries out recompile to the transmission data that receive, and isolation contacts with outside other data transmission network; And the recompile result is sent to real time data processing module and data storage server;
⑶ real time data processing module is judged the original service data of unit by the data that receive and is handled, finish the judgement of data area successively and average for analog signals, then finish the signal reasonability for the switching value signal and judge, and result is sent to real time execution cleanliness factor computing module;
⑷ real time execution cleanliness factor computing module is to receiving condenser duty value and overall heat transfer coefficient value under the current operating condition of data computation operation unit, and then draw condenser real time execution cleanliness factor, and result of calculation is sent to condenser real time execution cleanliness factor monitoring system main display and data storage server;
⑸ data storage server receives the data that come from real-time data acquisition net and real time execution cleanliness factor computing module simultaneously, and finishes classification and the storage of data, for user of service's transferring and subsequent treatment historical data;
⑹ condenser real time execution cleanliness factor monitoring system main display presents real time execution cleanliness factor and the history run cleanliness factor of condenser simultaneously with the form of form and curve, and carries out alarm.
2. condenser real time execution cleanliness factor on-line monitoring method according to claim 1, it is characterized in that: the unit real-time running data specifically comprises among the described step ⑴: unit load, unit vacuum, condenser hotwell coolant-temperature gage, condenser recirculated water advance pressure of return water and temperature, condenser circulating water flow.
3. condenser real time execution cleanliness factor on-line monitoring method according to claim 1 is characterized in that: among the described step ⑵ transmission data that receive being carried out recompile is that unit load, unit vacuum, condenser hotwell coolant-temperature gage, the condenser recirculated water that will receive advance pressure of return water and temperature, condenser circulating water flow transmission data make up П system data coding with the time data bag again.
4. condenser real time execution cleanliness factor on-line monitoring method according to claim 1 is characterized in that: the judgement concrete steps of finishing data area successively for analog signals among the described step ⑶ are:
1. the height of in the real time data processing module, the setting every kind of analog signals journey scope of limiting the quantity of;
2. every kind of analog signals that the real time data processing module is received compares with the journey scope of just limiting the quantity of respectively, if in range ability, then judgment data is rationally available, if not in range ability, then judgment data is unreasonable, and carries out alarm;
3. for the data that adopt dual or multiple measuring point, after finishing the judgement of data reasonability, all measuring point datas are carried out arithmetic average, and with the end value of mean value as this measuring point.
5. condenser real time execution cleanliness factor on-line monitoring method according to claim 1, it is characterized in that: the concrete computational methods of condenser duty value described in the described step ⑷ are:
1. calculate the current circulating cooling water flow d of x by frequency conversion water circulating pump rotating speed
v, d
v=a * x, wherein a is known coefficient;
2. by the specific heat capacity c under the current mean temperature of recirculated cooling water
pAdvance return water temperature t with density p, circulating cooling water flow q and condenser recirculated water
1And t
2Calculate the thermic load value q of current condenser
k=ρ * d
v* c
p* (t
2-t
1).
6. condenser real time execution cleanliness factor on-line monitoring method according to claim 1, it is characterized in that: the concrete computational methods of overall heat transfer coefficient value described in the described step ⑷ are:
1. by the hot well coolant-temperature gage t of condenser
sCalculate the logarithmic mean temperature difference (LMTD) lmtd of condenser, lmtd=(t
2-t
1)/ln ((t
s-t
1)/(t
s-t
2));
2. the overall heat transfer coefficient k=q of condenser
k/ (a
m* lmtd), a wherein
mBe known condenser cooling surface.
7. condenser real time execution cleanliness factor on-line monitoring method according to claim 1, it is characterized in that: the concrete computational methods of the cleanliness factor of condenser real time execution described in the described step ⑷ are:
Condenser real time execution cleanliness factor β
c=k/ (β
t* β
m* k
0).
8. condenser real time execution cleanliness factor on-line monitoring method according to claim 1 is characterized in that: the concrete sorting technique of the classification of data described in the described step ⑸ is:
1. data are divided into unit real-time running data and calculation result data, and wherein the unit real-time running data comprises: condenser hotwell coolant-temperature gage, condenser recirculated cooling water advance/and return water temperature, unit vacuum, frequency conversion water circulating pump rotating speed etc.; Calculation result data comprises: circulating cooling water flow, condenser real time execution cleanliness factor etc.;
2. because the unit real-time running data is gathered self-operating unit scattered control system server, in the notebook data storage server, no longer preserve, only finish calculation result data with time packet stores synchronized.
9. condenser real time execution cleanliness factor on-line monitoring method according to claim 1 is characterized in that: form described in the described step ⑹ comprises that specifically condenser hotwell coolant-temperature gage, condenser recirculated cooling water advance/return water temperature, unit vacuum, frequency conversion water circulating pump rotating speed, circulating cooling water flow, condenser real time execution cleanliness factor; Described curve specifically comprises the time dependent curve of unit vacuum, the time dependent curve of condenser circulating cooling water flow and the time dependent curve of condenser real time execution cleanliness factor.
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| CN111103161A (en) * | 2020-01-02 | 2020-05-05 | 张建英 | Condenser performance online monitoring and predicting system and using method thereof |
| CN112072636A (en) * | 2020-07-24 | 2020-12-11 | 国网天津市电力公司电力科学研究院 | Power spot market operation method based on source network load uncertainty factor |
| CN112072636B (en) * | 2020-07-24 | 2023-09-29 | 国网天津市电力公司电力科学研究院 | Electric power spot market operation method based on uncertain factors of source network load |
| CN112595137A (en) * | 2020-12-10 | 2021-04-02 | 东方电气集团东方汽轮机有限公司 | Method for on-line monitoring and analyzing performance of condenser and computer expert system |
| CN114485258A (en) * | 2022-03-16 | 2022-05-13 | 西安热工研究院有限公司 | Coal-electricity air cooling flushing system commissioning method and device and storage medium |
| CN114485258B (en) * | 2022-03-16 | 2024-02-09 | 西安热工研究院有限公司 | Operation method and device of coal-electricity air cooling flushing system and storage medium |
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