CN105909322A - Extraction steam condensing turbine set heat rate online monitoring method - Google Patents
Extraction steam condensing turbine set heat rate online monitoring method Download PDFInfo
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- CN105909322A CN105909322A CN201610238155.8A CN201610238155A CN105909322A CN 105909322 A CN105909322 A CN 105909322A CN 201610238155 A CN201610238155 A CN 201610238155A CN 105909322 A CN105909322 A CN 105909322A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
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Abstract
The invention relates to an extraction steam condensing turbine set heat rate online monitoring method comprising the following steps: running a data acquisition module to collect real time running data of a needed extraction steam condensing turbine set in real time; using a real time data acquisition network to recode and isolate the received data; using a real time data processing module to carry out determination and averaging of the turbine set original running data in a data scope; using a heat rate calculation module to calculate the received data so as to obtain the extraction steam condensing turbine set heat rate; using a data storage server to receive the data, classify the data, and store the data; using a display to present the turbine set heat rate and history running data in a chart and curve mode. The method helps operation people to handle the extraction steam condensing turbine set heat rate, thus providing references for economical running of the extraction steam condensing turbine set.
Description
Technical field
The invention belongs to thermal power generation field of energy-saving technology, particularly a kind of extraction-condensing steam turbine group heat consumption rate on-line monitoring side
Method.
Background technology
Aggravation and the strictest energy-saving and emission-reduction requirement along with competition among enterprises, it is possible to grasp extraction-condensing steam turbine group at any time
Heat consumption rate, for operations staff adjustment operate provide instruct and suggestion the most urgent.But, concentrated expression steam extraction and condensing formula vapour
The heat consumption rate of wheel unit energy consumption level can only be obtained by experiment calculation, currently without monitoring extraction-condensing steam turbine in real time
The method of group heat consumption rate, causes the economical operation of extraction-condensing steam turbine group to lack necessary technical support.
Summary of the invention
It is an object of the invention to for the deficiencies in the prior art, and propose a kind of extraction-condensing steam turbine group heat consumption rate on-line monitoring
Method.
The present invention solves it and technical problem is that and take techniques below scheme to realize:
A kind of extraction-condensing steam turbine group heat consumption rate on-line monitoring method, it is as follows that the method comprising the steps of:
(1) the real-time running data acquisition module of extraction-condensing steam turbine group takes from extraction-condensing steam turbine group scattered control system
Business device gathers required extraction-condensing steam turbine group real-time running data, and sends real-time running data to real-time data acquisition net；
(2) the transmission data received are recompiled by real-time data acquisition net, isolation and the connection of other data transmission network outside
System；And result transmission will be recompiled to real time data processing module and data storage server；
(3) real time data processing module carry out extraction-condensing steam turbine group raw operational data judging by the data that receive and
Process, the judgement of scope of data is sequentially completed for data signal and averages, and result is sent to heat rate calculation
Module；
(4) heat rate calculation module calculates the total heat of extraction-condensing steam turbine group entrance system under current operating condition to receiving data
Amount and the total amount of heat of the system of discharge, and then calculate extraction-condensing steam turbine group heat consumption rate, and result of calculation is sent to heat consumption
Rate on-line monitoring system main display and data storage server；
(5) data storage server receives simultaneously and comes from extraction-condensing steam turbine group real-time data acquisition net and steam extraction and condensing formula vapour
The data of wheel unit heat rate calculation module, and complete classification and the storage of data, for user of service, historical data is transferred
And subsequent treatment, wherein, the concrete classification of described data classification is real-time running data and the result of calculation splitting data into unit
Data；
(6) heat consumption rate on-line monitoring system main display presents extraction-condensing steam turbine group heat consumption with the form of form and curve simultaneously
Rate real time data and history data.
And, in described step (1), real-time running data specifically includes: extraction-condensing steam turbine group main steam pressure Pzhu、
Temperature TzhuWith flow Dzhu；Extraction-condensing steam turbine group high pressure cylinder exhaust steam pressure Pgout, temperature TgoutWith flow Dgout；Draw gas solidifying
Vapour formula Steam Turbine reheated steam pressure Pzai, temperature TzaiWith flow Dzai；Extraction-condensing steam turbine group final feed pressure Pgei、
Temperature TgeiWith flow Dgei；Extraction-condensing steam turbine group overheated pressure of desuperheating water Pgjian, temperature TgjianWith flow Dgjian；Draw gas
Condensing turbine group reheating pressure of desuperheating water Pzjian, temperature TzjianWith flow Dzjian；Extraction-condensing steam turbine group heat supply is drawn gas
Pressure Pchou, temperature TchouWith flow Dchou；Extraction-condensing steam turbine group heat supply network hydrophobic pressure Pshui, temperature TshuiWith flow Dshui；
Extraction-condensing steam turbine group generator power W.
And, in described step (2) to receive transmission data recompile be by transmission data again with time data bag
It is combined II binary data coding.
And, described step (3) is sequentially completed the judgement of scope of data and comprising the concrete steps that of averaging for data signal:
1. real time data processing module sets the height limit range ability of every kind of data signal；
2. every kind of data signal real time data processing module received compares with height limit range ability respectively, if
In range ability, then judge that data rationally can use, if not in range ability, then judge that data are unreasonable, and report to the police
Prompting；
3. for using the data of dual or multiple measuring point, after completing data reasonability and judging, all measuring point datas are carried out
Arithmetic average, and using meansigma methods as the end value of this measuring point.
And, the circular of the total amount of heat entering system described in step (4) is:
1. by extraction-condensing steam turbine group main steam pressure PzhuWith temperature Tzhu, calculate extraction-condensing steam turbine group main steam
Enthalpy Hzhu, use function Hzhu=f (Pzhu,Tzhu) represent；
2. by extraction-condensing steam turbine group reheated steam pressure Pzai, temperature Tzai, calculate extraction-condensing steam turbine group reheating and steam
The enthalpy H of vapourzai, use function Hzai=f (Pzai,Tzai) represent；
3. by extraction-condensing steam turbine group heat supply network hydrophobic pressure Pshui, temperature Tshui, calculate extraction-condensing steam turbine group heat supply network and dredge
Water enthalpy Hshui, use function Hshui=f (Pshui,Tshui) represent；
4. extraction-condensing steam turbine group enters total amount of heat Q of systemin=Dzhu×Hzhu+Dzai×Hzai+Dshui×Hshui, wherein Dzhu
For main steam flow, DzaiFor reheated steam flow, DshuiFor the hydrophobic flow of heat supply network；
The circular of the total amount of heat of described discharge system is:
1. by extraction-condensing steam turbine group high pressure cylinder exhaust steam pressure Pgout, temperature Tgout, calculate extraction-condensing steam turbine group high pressure
The enthalpy H of cylinder steam dischargegout, use function Hgout=f (Pgout,Tgout) represent；
2. by extraction-condensing steam turbine group final feed pressure Pgei, temperature Tgei, calculate extraction-condensing steam turbine group and finally give
The enthalpy H of watergei, use function Hgei=f (Pgei,Tgei) represent；
3. by extraction-condensing steam turbine group overheated pressure of desuperheating water Pgjian, temperature Tgjian, calculate extraction-condensing steam turbine group mistake
The enthalpy H of hot desuperheating watergjian, use function Hgjian=f (Pgjian,Tgjian) represent；
4. by extraction-condensing steam turbine group reheating pressure of desuperheating water Pzjian, temperature Tzjian, calculate extraction-condensing steam turbine group again
The enthalpy H of hot desuperheating waterzjian, use function Hzjian=f (Pzjian,Tzjian) represent；
5. by extraction-condensing steam turbine group heat supply extraction pressure Pchou, temperature Tchou, calculate extraction-condensing steam turbine group heat supply and take out
Vapour enthalpy Hchou, use function Hchou=f (Pchou,Tchou) represent；
6. extraction-condensing steam turbine group discharges total amount of heat Q of systemout=Dgout×Hgout+Dgei×Hgei+Dgjian×Hgjian+Dzjian×
Hzjian+Dchou×Hchou, wherein DgoutFor high pressure cylinder exhaust steam flow, DgeiFor final feedwater flow, DgjianFor overheated attemperation water flow,
DzjianFor reheating attemperation water flow, DchouFor heat supply extraction flow；
The specific formula for calculation of described extraction-condensing steam turbine group heat consumption rate is:
Extraction-condensing steam turbine group heat consumption rate β=(Qin-Qout)/W, wherein W is extraction-condensing steam turbine group generator power.
And, curve described in step (6) is specially the extraction-condensing steam turbine time dependent curve of group heat consumption rate.
Advantages of the present invention and good effect be:
Extraction-condensing steam turbine group real-time running data acquisition module, extraction-condensing steam turbine group real time data are adopted by the present invention
Collection net, real time data processing module, heat rate calculation module, data storage server, extraction-condensing steam turbine group heat consumption rate
On-line monitoring system key frame links together, and constitutes extraction-condensing steam turbine group heat consumption rate on-line monitoring system.This system is led to
Cross and calculate in real time the heat consumption rate that can reflect extraction-condensing steam turbine group energy consumption level, and with the form of chart and history curve in
Now give operations staff, help operations staff to grasp extraction-condensing steam turbine group energy consumption level, for extraction-condensing steam turbine system
The economical operation of system provides reference.
Detailed description of the invention
Hereinafter the embodiment of the present invention is further described: it is emphasized that embodiment of the present invention is illustrative,
Rather than determinate, therefore the present invention is not limited to the embodiment described in detailed description of the invention, every by people in the art
Other embodiment that member draws according to technical scheme, also belongs to the scope of protection of the invention.
A kind of extraction-condensing steam turbine group heat consumption rate on-line monitoring method, as it is shown in figure 1, the hardware system bag that the method uses
Include: the real-time running data acquisition module of extraction-condensing steam turbine group, real-time data acquisition net, real time data processing module,
Heat rate calculation module, data storage server, heat consumption rate on-line monitoring system main display and extraction-condensing steam turbine component
Dissipate control system server, specifically comprising the following steps that of the method
(1) extraction-condensing steam turbine group real-time running data acquisition module services from extraction-condensing steam turbine group scattered control system
Device gathers required extraction-condensing steam turbine group real-time running data, and sends real-time running data to real-time data acquisition net；
Wherein, real-time running data specifically includes: extraction-condensing steam turbine group main steam pressure Pzhu, temperature TzhuWith flow Dzhu；
Extraction-condensing steam turbine group high pressure cylinder exhaust steam pressure Pgout, temperature TgoutWith flow Dgout；Extraction-condensing steam turbine group reheating is steamed
Steam pressure Pzai, temperature TzaiWith flow Dzai；Extraction-condensing steam turbine group final feed pressure Pgei, temperature TgeiWith flow Dgei；
Extraction-condensing steam turbine group overheated pressure of desuperheating water Pgjian, temperature TgjianWith flow Dgjian；Extraction-condensing steam turbine group reheating
Pressure of desuperheating water Pzjian, temperature TzjianWith flow Dzjian；Extraction-condensing steam turbine group heat supply extraction pressure Pchou, temperature Tchou
With flow Dchou；Extraction-condensing steam turbine group heat supply network hydrophobic pressure Pshui, temperature TshuiWith flow Dshui；Steam extraction and condensing formula steamer
Unit generation acc power W.
(2) the transmission data received are recompiled by real-time data acquisition net, isolation and the connection of other data transmission network outside
System；And result transmission will be recompiled to real time data processing module and data storage server；
Wherein, data are transmitted in reception and recompile the extraction-condensing steam turbine group main steam pressure P being to receivezhu、
Temperature TzhuWith flow Dzhu；Extraction-condensing steam turbine group high pressure cylinder exhaust steam pressure Pgout, temperature TgoutWith flow Dgout；Draw gas solidifying
Vapour formula Steam Turbine reheated steam pressure Pzai, temperature TzaiWith flow Dzai；Extraction-condensing steam turbine group final feed pressure Pgei、
Temperature TgeiWith flow Dgei；Extraction-condensing steam turbine group overheated pressure of desuperheating water Pgjian, temperature TgjianWith flow Dgjian；Draw gas
Condensing turbine group reheating pressure of desuperheating water Pzjian, temperature TzjianWith flow Dzjian；Extraction-condensing steam turbine group heat supply is drawn gas
Pressure Pchou, temperature TchouWith flow Dchou；Extraction-condensing steam turbine group heat supply network hydrophobic pressure Pshui, temperature TshuiWith flow Dshui；
Extraction-condensing steam turbine group generator power W transmission data are combined II binary data coding again with time data bag.
(3) real time data processing module carry out extraction-condensing steam turbine group raw operational data judging by the data that receive and
Process, the judgement of scope of data is sequentially completed for data signal and averages, and result is sent to steam extraction and condensing formula
Specific Heat Consumption For Steam Turbine Unit computing module；
Wherein, the judgement of scope of data is sequentially completed for data signal to comprise the concrete steps that:
1. real time data processing module sets the height limit range ability of every kind of data signal；
2. every kind of data signal real time data processing module received compares with height limit range ability respectively, if
In range ability, then judge that data rationally can use, if not in range ability, then judge that data are unreasonable, and report to the police
Prompting；
3. for using the data of dual or multiple measuring point, after completing data reasonability and judging, all measuring point datas are carried out
Arithmetic average, and using meansigma methods as the end value of this measuring point.
(4) heat rate calculation module calculates the total heat of extraction-condensing steam turbine group entrance system under current operating condition to receiving data
Amount and the total amount of heat of the system of discharge, and then calculate extraction-condensing steam turbine group heat consumption rate, and result of calculation is sent to drawing gas
Condensing turbine group heat consumption rate on-line monitoring system main display and data storage server；
Wherein, the circular of the total amount of heat of described entrance system is:
1. by extraction-condensing steam turbine group main steam pressure PzhuWith temperature Tzhu, calculate extraction-condensing steam turbine group main steam
Enthalpy Hzhu, use function Hzhu=f (Pzhu,Tzhu) represent；
2. by extraction-condensing steam turbine group reheated steam pressure Pzai, temperature Tzai, calculate extraction-condensing steam turbine group reheating and steam
The enthalpy H of vapourzai, use function Hzai=f (Pzai,Tzai) represent；
3. by extraction-condensing steam turbine group heat supply network hydrophobic pressure Pshui, temperature Tshui, calculate extraction-condensing steam turbine group heat supply network and dredge
Water enthalpy Hshui, use function Hshui=f (Pshui,Tshui) represent；
4. extraction-condensing steam turbine group enters total amount of heat Q of systemin=Dzhu×Hzhu+Dzai×Hzai+Dshui×Hshui, wherein Dzhu
For main steam flow, DzaiFor reheated steam flow, DshuiFor the hydrophobic flow of heat supply network.
Wherein, the circular of the total amount of heat of described discharge system is:
1. by extraction-condensing steam turbine group high pressure cylinder exhaust steam pressure Pgout, temperature Tgout, calculate extraction-condensing steam turbine group high pressure
The enthalpy H of cylinder steam dischargegout, use function Hgout=f (Pgout,Tgout) represent；
2. by extraction-condensing steam turbine group final feed pressure Pgei, temperature Tgei, calculate extraction-condensing steam turbine group and finally give
The enthalpy H of watergei, use function Hgei=f (Pgei,Tgei) represent；
3. by extraction-condensing steam turbine group overheated pressure of desuperheating water Pgjian, temperature Tgjian, calculate extraction-condensing steam turbine group mistake
The enthalpy H of hot desuperheating watergjian, use function Hgjian=f (Pgjian,Tgjian) represent；
4. by extraction-condensing steam turbine group reheating pressure of desuperheating water Pzjian, temperature Tzjian, calculate extraction-condensing steam turbine group again
The enthalpy H of hot desuperheating waterzjian, use function Hzjian=f (Pzjian,Tzjian) represent；
5. by extraction-condensing steam turbine group heat supply extraction pressure Pchou, temperature Tchou, calculate extraction-condensing steam turbine group heat supply and take out
Vapour enthalpy Hchou, use function Hchou=f (Pchou,Tchou) represent；
6. extraction-condensing steam turbine group discharges total amount of heat Q of systemout=Dgout×Hgout+Dgei×Hgei+Dgjian×Hgjian+Dzjian×
Hzjian+Dchou×Hchou, wherein DgoutFor high pressure cylinder exhaust steam flow, DgeiFor final feedwater flow, DgjianFor overheated attemperation water flow,
DzjianFor reheating attemperation water flow, DchouFor heat supply extraction flow.
Wherein, the specific formula for calculation of described extraction-condensing steam turbine group heat consumption rate is:
Extraction-condensing steam turbine group heat consumption rate β=(Qin-Qout)/W, wherein W is extraction-condensing steam turbine group generator power.
(5) data storage server receives simultaneously and comes from extraction-condensing steam turbine group real-time data acquisition net and steam extraction and condensing formula vapour
The data of wheel unit heat rate calculation module, and complete classification and the storage of data, for user of service, historical data is transferred
And subsequent treatment；
Wherein, the concrete sorting technique of described data classification is:
1. data are divided into extraction-condensing steam turbine group real-time running data and calculation result data, wherein extraction-condensing steam turbine
Group real-time running data includes: extraction-condensing steam turbine group main steam pressure Pzhu, temperature TzhuWith flow Dzhu；Steam extraction and condensing formula
Steam Turbine high pressure cylinder exhaust steam pressure Pgout, temperature TgoutWith flow Dgout；Extraction-condensing steam turbine group reheated steam pressure Pzai、
Temperature TzaiWith flow Dzai；Extraction-condensing steam turbine group final feed pressure Pgei, temperature TgeiWith flow Dgei；Steam extraction and condensing
Formula Steam Turbine overheated pressure of desuperheating water Pgjian, temperature TgjianWith flow Dgjian；Extraction-condensing steam turbine group reheating desuperheat hydraulic pressure
Power Pzjian, temperature TzjianWith flow Dzjian；Extraction-condensing steam turbine group heat supply extraction pressure Pchou, temperature TchouWith flow Dchou；
Extraction-condensing steam turbine group heat supply network hydrophobic pressure Pshui, temperature TshuiWith flow Dshui；Extraction-condensing steam turbine group electromotor merit
Rate W；
2. service from extraction-condensing steam turbine group scattered control system owing to extraction-condensing steam turbine group real-time running data gathers
Device, no longer preserves in notebook data storage server, only completes calculation result data and store with time packet synchronisation.
(6) extraction-condensing steam turbine group heat consumption rate on-line monitoring system main display presents with the form of form and curve simultaneously and draws gas
Condensing turbine group heat consumption rate real time data and history data.
Wherein, described form specifically includes extraction-condensing steam turbine group main steam pressure Pzhu, temperature TzhuWith flow Dzhu；Draw gas
Condensing turbine group high pressure cylinder exhaust steam pressure Pgout, temperature TgoutWith flow Dgout；Extraction-condensing steam turbine group reheated steam pressure
Power Pzai, temperature TzaiWith flow Dzai；Extraction-condensing steam turbine group final feed pressure Pgei, temperature TgeiWith flow Dgei；Take out
Vapour condensing turbine group overheated pressure of desuperheating water Pgjian, temperature TgjianWith flow Dgjian；Extraction-condensing steam turbine group reheating subtracts
Warm water pressure Pzjian, temperature TzjianWith flow Dzjian；Extraction-condensing steam turbine group heat supply extraction pressure Pchou, temperature TchouWith
Flow Dchou；Extraction-condensing steam turbine group heat supply network hydrophobic pressure Pshui, temperature TshuiWith flow Dshui；Extraction-condensing steam turbine
Group generator power W.
Wherein, described curve is specially the extraction-condensing steam turbine time dependent curve of group heat consumption rate.
Claims (6)
1. an extraction-condensing steam turbine group heat consumption rate on-line monitoring method, it is characterised in that it is as follows that the method comprising the steps of:
(1) the real-time running data acquisition module of extraction-condensing steam turbine group takes from extraction-condensing steam turbine group scattered control system
Business device gathers required extraction-condensing steam turbine group real-time running data, and sends real-time running data to real-time data acquisition net；
(2) the transmission data received are recompiled by real-time data acquisition net, isolation and the connection of other data transmission network outside
System；And result transmission will be recompiled to real time data processing module and data storage server；
(3) real time data processing module carry out extraction-condensing steam turbine group raw operational data judging by the data that receive and
Process, the judgement of scope of data is sequentially completed for data signal and averages, and result is sent to heat rate calculation
Module；
(4) heat rate calculation module calculates the total heat of extraction-condensing steam turbine group entrance system under current operating condition to receiving data
Amount and the total amount of heat of the system of discharge, and then calculate extraction-condensing steam turbine group heat consumption rate, and result of calculation is sent to heat consumption
Rate on-line monitoring system main display and data storage server；
(5) data storage server receives simultaneously and comes from extraction-condensing steam turbine group real-time data acquisition net and steam extraction and condensing formula vapour
The data of wheel unit heat rate calculation module, and complete classification and the storage of data, for user of service, historical data is transferred
And subsequent treatment, wherein, the concrete classification of described data classification is real-time running data and the result of calculation splitting data into unit
Data；
(6) heat consumption rate on-line monitoring system main display presents extraction-condensing steam turbine group heat consumption with the form of form and curve simultaneously
Rate real time data and history data.
Extraction-condensing steam turbine group heat consumption rate on-line monitoring method the most according to claim 1, it is characterised in that: described
In step (1), real-time running data specifically includes: extraction-condensing steam turbine group main steam pressure Pzhu, temperature TzhuAnd flow
Dzhu；Extraction-condensing steam turbine group high pressure cylinder exhaust steam pressure Pgout, temperature TgoutWith flow Dgout；Extraction-condensing steam turbine group is again
Vapours pressure Pzai, temperature TzaiWith flow Dzai；Extraction-condensing steam turbine group final feed pressure Pgei, temperature TgeiAnd stream
Amount Dgei；Extraction-condensing steam turbine group overheated pressure of desuperheating water Pgjian, temperature TgjianWith flow Dgjian；Extraction-condensing steam turbine
Group reheating pressure of desuperheating water Pzjian, temperature TzjianWith flow Dzjian；Extraction-condensing steam turbine group heat supply extraction pressure Pchou, temperature
Degree TchouWith flow Dchou；Extraction-condensing steam turbine group heat supply network hydrophobic pressure Pshui, temperature TshuiWith flow Dshui；Steam extraction and condensing
Formula Steam Turbine generator power W.
Extraction-condensing steam turbine group heat consumption rate on-line monitoring method the most according to claim 1, it is characterised in that: described
Recompiling, in step (2), the transmission data received is that again with time data bag, transmission data are combined II system
Data encoding.
Extraction-condensing steam turbine group heat consumption rate on-line monitoring method the most according to claim 1, it is characterised in that: described
Step (3) is sequentially completed the judgement of scope of data and comprising the concrete steps that of averaging for data signal:
1. real time data processing module sets the height limit range ability of every kind of data signal；
2. every kind of data signal real time data processing module received compares with height limit range ability respectively, if
In range ability, then judge that data rationally can use, if not in range ability, then judge that data are unreasonable, and report to the police
Prompting；
3. for using the data of dual or multiple measuring point, after completing data reasonability and judging, all measuring point datas are carried out
Arithmetic average, and using meansigma methods as the end value of this measuring point.
Extraction-condensing steam turbine group heat consumption rate on-line monitoring method the most according to claim 1, it is characterised in that: step
(4) circular of the total amount of heat entering system described in is:
1. by extraction-condensing steam turbine group main steam pressure PzhuWith temperature Tzhu, calculate extraction-condensing steam turbine group main steam
Enthalpy Hzhu, use function Hzhu=f (Pzhu,Tzhu) represent；
2. by extraction-condensing steam turbine group reheated steam pressure Pzai, temperature Tzai, calculate extraction-condensing steam turbine group reheating and steam
The enthalpy H of vapourzai, use function Hzai=f (Pzai,Tzai) represent；
3. by extraction-condensing steam turbine group heat supply network hydrophobic pressure Pshui, temperature Tshui, calculate extraction-condensing steam turbine group heat supply network and dredge
Water enthalpy Hshui, use function Hshui=f (Pshui,Tshui) represent；
4. extraction-condensing steam turbine group enters total amount of heat Q of systemin=Dzhu×Hzhu+Dzai×Hzai+Dshui×Hshui, wherein Dzhu
For main steam flow, DzaiFor reheated steam flow, DshuiFor the hydrophobic flow of heat supply network；
The circular of the total amount of heat of described discharge system is:
1. by extraction-condensing steam turbine group high pressure cylinder exhaust steam pressure Pgout, temperature Tgout, calculate extraction-condensing steam turbine group high pressure
The enthalpy H of cylinder steam dischargegout, use function Hgout=f (Pgout,Tgout) represent；
2. by extraction-condensing steam turbine group final feed pressure Pgei, temperature Tgei, calculate extraction-condensing steam turbine group and finally give
The enthalpy H of watergei, use function Hgei=f (Pgei,Tgei) represent；
3. by extraction-condensing steam turbine group overheated pressure of desuperheating water Pgjian, temperature Tgjian, calculate extraction-condensing steam turbine group mistake
The enthalpy H of hot desuperheating watergjian, use function Hgjian=f (Pgjian,Tgjian) represent；
4. by extraction-condensing steam turbine group reheating pressure of desuperheating water Pzjian, temperature Tzjian, calculate extraction-condensing steam turbine group again
The enthalpy H of hot desuperheating waterzjian, use function Hzjian=f (Pzjian,Tzjian) represent；
5. by extraction-condensing steam turbine group heat supply extraction pressure Pchou, temperature Tchou, calculate extraction-condensing steam turbine group heat supply and take out
Vapour enthalpy Hchou, use function Hchou=f (Pchou,Tchou) represent；
6. extraction-condensing steam turbine group discharges total amount of heat Q of systemout=Dgout×Hgout+Dgei×Hgei+Dgjian×Hgjian+Dzjian×
Hzjian+Dchou×Hchou, wherein DgoutFor high pressure cylinder exhaust steam flow, DgeiFor final feedwater flow, DgjianFor overheated attemperation water flow,
DzjianFor reheating attemperation water flow, DchouFor heat supply extraction flow；
The specific formula for calculation of described extraction-condensing steam turbine group heat consumption rate is:
Extraction-condensing steam turbine group heat consumption rate β=(Qin-Qout)/W, wherein W is extraction-condensing steam turbine group generator power.
Extraction-condensing steam turbine group heat consumption rate on-line monitoring method the most according to claim 1, it is characterised in that: step
(6) curve described in is specially the extraction-condensing steam turbine time dependent curve of group heat consumption rate.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109459162A (en) * | 2018-09-30 | 2019-03-12 | 国网天津市电力公司电力科学研究院 | Unit heat consumption rate monitoring method after a kind of external heat supply of absorption heat pump recovery waste heat |
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| CN107201921A (en) * | 2017-03-10 | 2017-09-26 | 国电科学技术研究院 | A kind of thermal loss of steam turbine rate on-line monitoring system and measuring method |
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| CN108060949B (en) * | 2017-10-30 | 2020-06-16 | 大唐东北电力试验研究所有限公司 | Method for reducing heat consumption rate of steam turbine generator unit |
| CN108691585A (en) * | 2018-05-09 | 2018-10-23 | 国网山东省电力公司电力科学研究院 | A kind of computational methods of condensing turbine low pressure (LP) cylinder efficiency |
| CN109441562A (en) * | 2018-09-30 | 2019-03-08 | 国网天津市电力公司电力科学研究院 | Unit heat consumption rate monitoring method after extraction-condensing steam turbine low pressure (LP) cylinder heat supply transformation |
| CN109459162A (en) * | 2018-09-30 | 2019-03-12 | 国网天津市电力公司电力科学研究院 | Unit heat consumption rate monitoring method after a kind of external heat supply of absorption heat pump recovery waste heat |
| CN110619485A (en) * | 2019-10-09 | 2019-12-27 | 江苏方天电力技术有限公司 | Heat consumption characteristic analysis method for steam turbine set of main pipe thermal power plant |
| CN110619485B (en) * | 2019-10-09 | 2022-06-10 | 江苏方天电力技术有限公司 | Heat consumption characteristic analysis method for steam turbine set of main pipe thermal power plant |
| CN114352365A (en) * | 2021-12-30 | 2022-04-15 | 华能沁北发电有限责任公司 | Online steam turbine heat rate monitoring device and method for thermal power plant |
| CN114352365B (en) * | 2021-12-30 | 2023-04-25 | 华能沁北发电有限责任公司 | Device and method for monitoring heat consumption rate of online steam turbine of thermal power plant |
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