CN204612758U - For the analog quantity measuring point monitoring equipment of fired power generating unit - Google Patents
For the analog quantity measuring point monitoring equipment of fired power generating unit Download PDFInfo
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- CN204612758U CN204612758U CN201520280629.6U CN201520280629U CN204612758U CN 204612758 U CN204612758 U CN 204612758U CN 201520280629 U CN201520280629 U CN 201520280629U CN 204612758 U CN204612758 U CN 204612758U
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Abstract
The utility model discloses a kind of analog quantity measuring point monitoring equipment for fired power generating unit.This analog quantity measuring point monitoring equipment comprises multiple sensor and is connected to obtain the data capture unit of the measured value that described sensor records with described multiple sensor, described analog quantity measuring point monitoring equipment also comprises: rate of change detecting unit, be connected with described data capture unit, for detecting the rate of change of described measured value; Rate of change judging unit, is connected with described rate of change detecting unit, when the rate of change of described measured value exceeds preset range, and described rate of change judging unit output signal; Alarm unit, described alarm unit is connected with described rate of change judging unit, in order to receive the signal of described rate of change judging unit output and to export corresponding alerting signal.Application the utility model can be reported to the police to operations staff in time when correlation parameter sharply changes, so that operations staff investigates early and intervenes, and generation of preventing accident.
Description
Technical field
The utility model relates to fired power generating unit monitoring field, particularly, relates to a kind of analog quantity measuring point monitoring equipment for fired power generating unit.
Background technology
In order to ensure the safe operation of modern Large-scale fire-electricity unit, usually numerous monitoring measuring point (up to 15000 ~ 20000) is set at the links of fired power generating unit, preset upper limit and pre-determined lower limit can be set for the measured value of each monitoring measuring point, when measured value is greater than preset upper limit or is less than pre-determined lower limit, give the alarm to operations staff.
In actual motion, due to operations staff's limited amount, 2 ~ 3 operations staffs only may be had corresponding to a Large-scale fire-electricity unit, make that each operations staff's working pressure is large, task weight, cause the monitoring of part measuring point not prompt enough, special in some parameter is sharply changed to dangerous values from safety value, operations staff etc. take measures after receiving alarm may delay the optimization process time again, thus easily break down.
Utility model content
The purpose of this utility model is to provide a kind of equipment, and this equipment can monitor operating abnormal conditions more timely, is convenient to operations staff's Timeliness coverage and intervention, guarantees that anomalous event is controlled.
To achieve these goals, the utility model provides a kind of analog quantity measuring point monitoring equipment for fired power generating unit, this analog quantity measuring point monitoring equipment comprises multiple sensor and is connected to obtain the data capture unit of the measured value that described sensor records with described multiple sensor, described analog quantity measuring point monitoring equipment also comprises: rate of change detecting unit, be connected with described data capture unit, for detecting the rate of change of described measured value; Rate of change judging unit, is connected with described rate of change detecting unit, when the rate of change of described measured value exceeds preset range, and described rate of change judging unit output signal; Alarm unit, described alarm unit is connected with described rate of change judging unit, in order to receive the signal of described rate of change judging unit output and to export corresponding alerting signal.
Preferably, described multiple sensor comprises the sensor being arranged on following part or all of measuring point place: for measuring the temperature point of the vapor (steam) temperature in boiler superheater jet chimney, water level for measuring the liquid level in boiler steam-water separator regulates measuring point, be correlated with send the auxiliary vapour system related pressure measuring point of pipeline pressure for measuring auxiliary vapour system, for flowing through the feedwater flow measuring point of the medium of feed pump outlet in measuring unit's time, for measuring the solidifying discharge measuring point of the condensing water flow of condensate pump, for measuring the main vapour pressure measuring point of main vapour pressure of boiler, for measuring the air pressure system measuring point of the blast of primary air fan, for measuring the furnace pressure measuring point of furnace pressure.
Preferably, the rate of change preset range for the measured value at described temperature point place is-10 DEG C/min to+10 DEG C/min; The rate of change preset range regulating the measured value at measuring point place for described water level is-100mm/ minute to+100mm/ minute; Auxiliary vapour to the rate of change preset range of boiler sootblowing steam pressure measuring value for described auxiliary vapour system related pressure measuring point place is-200kPa/ minute to+200kPa/ minute; Rate of change preset range for the measured value at described feedwater flow measuring point place and described solidifying discharge measuring point place is that (t referred to the mass unit by ton in-100t/h/ minute, h refers to the chronomere of Hour, within t/h/ minute, refers to the rate of change of the mass of medium flow through in the unit interval) to+100t/h/ minute; Rate of change preset range for the measured value at described main vapour pressure measuring point place is-1MPa/ minute to+1MPa/ minute; Rate of change preset range for the measured value at described air pressure system measuring point place is-2kPa/ minute to+2kPa/ minute; Rate of change preset range for the measured value at described furnace pressure measuring point place is-200Pa/ minute to+200Pa/ minute.
Preferably, described analog quantity measuring point monitoring equipment also comprises high limit judging unit and/or lower bound judging unit, described high limit judging unit and/or described lower bound judging unit are connected between described data capture unit and alarm unit, when detecting that described measured value is greater than preset upper limit and/or is less than pre-determined lower limit, export the signal driving alarm unit to report to the police.
By technique scheme, but though make not yet to exceed preset value in some monitoring point its variation tendency has started to occur abnormal time, send alerting signal to operations staff in time, thus improve the safe reliability of operating unit.Equipment disclosed in the utility model can realize in dcs (DCS).
Other features and advantages of the utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for instructions, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 shows the structural representation of the analog quantity measuring point monitoring equipment for fired power generating unit according to the utility model preferred implementation.
Description of reference numerals
10, data capture unit 11, rate of change detecting unit
12, rate of change judging unit 13, high limit judging unit
14, lower bound judging unit 15, alarm unit
16, sensor
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
Fig. 1 is the analog quantity measuring point monitoring equipment for fired power generating unit according to the utility model preferred implementation.As shown in the figure, this analog quantity measuring point monitoring equipment comprises multiple sensor 16, preferably, the sensor that following measuring point place carries out measuring can be included in: be positioned at boiler superheater jet chimney for measuring the temperature point of vapor (steam) temperature change, be arranged in boiler steam-water separator for measuring the water level measuring point of the change of the liquid level of separation vessel, be positioned at auxiliary steam pipeline for measure auxiliary vapour system be correlated with send pipeline pressure change (such as, auxiliary vapour is to boiler sootblowing steam pressure) measuring point, be positioned at the measuring point of the feedwater flow of the medium that feed pump outlet is flow through for measuring unit the time, be positioned at condensate pump outlet for measuring the measuring point of condensing water flow change, be positioned at boiler superheater outlet for measuring the measuring point of the main vapour pressure of main vapour pressure of boiler change, be positioned at primary air fan outlet for measuring the air pressure system measuring point of the blast change of primary air fan, be positioned at boiler furnace for measuring the measuring point etc. of the pressure of the burner hearth of furnace pressure change.Data capture unit 10 obtains measured value from the sensor being distributed in the various numerous analog quantity measuring points of fired power generating unit.
Rate of change detecting unit 11 is connected with data capture unit 10, according to the rate of change of the measured value calculating respective mode analog quantity that data capture unit 10 obtains, such as, and can with the variable quantity of analog measurement in one minute as rate of change.
Rate of change judging unit 12 receives the rate of change of the measured value that rate of change detecting unit 11 detects, and by each rate of change compared with corresponding preset range, after the rate of change of the measured value of certain measurement point exceeds corresponding preset range, export the signal driving alarm unit 13 to report to the police to alarm unit 13.The determination of preset range is extremely important, and the scope of the rate of change of permission is crossed senior general and caused to remind operations staff in time, and the scope of the rate of change of permission is crossed young pathbreaker and caused frequent early warning and disturb normal operation.Inventor, through test of many times and careful consideration, is arranged as follows to the allowed band of rate of change:
Rate of change preset range for the measured value at said temperature measuring point place is-10 DEG C/min to+10 DEG C/min;
The rate of change preset range regulating the measured value at measuring point place for above-mentioned water level is-100mm/ minute to+100mm/ minute;
Auxiliary vapour to the rate of change preset range of boiler sootblowing steam pressure measuring value for above-mentioned auxiliary vapour system related pressure measuring point place is-200kPa/ minute to+200kPa/ minute;
Rate of change preset range for the measured value at above-mentioned feedwater flow measuring point place and described solidifying discharge measuring point place is-100t/h/ minute to+100t/h/ minute;
Rate of change preset range for the measured value at above-mentioned main vapour pressure measuring point place is-1MPa/ minute to+1MPa/ minute;
Rate of change preset range for the measured value at above-mentioned air pressure system measuring point place is-2kPa/ minute to+2kPa/ minute;
Rate of change preset range for the measured value at above-mentioned furnace pressure measuring point place is-200Pa/ minute to+200Pa/ minute.
Alarm unit 15 is connected with rate of change judging unit 12, under the driving of rate of change judging unit 12, send alerting signal in time, makes operations staff to investigate potential abnormity point and to process as early as possible, avoids accident to occur.
Preferably, high limit judging unit 13 and lower bound judging unit 14 is also comprised according to the analog quantity measuring point monitoring equipment of this preferred implementation.High limit judging unit 13 and lower bound judging unit 14 are connected with data capture unit 10 measured value recorded to obtain respective mode analog quantity measuring point.When the corresponding measured value detected exceedes preset upper limit and pre-determined lower limit, output signal drives alarm unit 15 to report to the police.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.Such as, different alarm units can be adopted to correspond to rate of change judging unit and high limit/lower bound judging unit.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (4)
1. the analog quantity measuring point monitoring equipment for fired power generating unit, this analog quantity measuring point monitoring equipment comprises multiple sensor and is connected to obtain the data capture unit of the measured value that described sensor records with described multiple sensor, it is characterized in that, described analog quantity measuring point monitoring equipment also comprises:
Rate of change detecting unit, is connected with described data capture unit, for detecting the rate of change of described measured value;
Rate of change judging unit, is connected with described rate of change detecting unit, when the rate of change of described measured value exceeds preset range, and described rate of change judging unit output signal;
Alarm unit, described alarm unit is connected with described rate of change judging unit, in order to receive the signal of described rate of change judging unit output and to export corresponding alerting signal.
2. the analog quantity measuring point monitoring equipment for fired power generating unit according to claim 1, it is characterized in that, described multiple sensor comprises the sensor being arranged on following part or all of measuring point place: for measuring the temperature point of the vapor (steam) temperature in boiler superheater jet chimney, water level for measuring the liquid level in boiler steam-water separator regulates measuring point, be correlated with send the auxiliary vapour system related pressure measuring point of pipeline pressure for measuring auxiliary vapour system, for flowing through the feedwater flow measuring point of the medium of feed pump outlet in measuring unit's time, for measuring the solidifying discharge measuring point of the condensing water flow of condensate pump, for measuring the main vapour pressure measuring point of main vapour pressure of boiler, for measuring the air pressure system measuring point of the blast of primary air fan, for measuring the furnace pressure measuring point of furnace pressure.
3. the analog quantity measuring point monitoring equipment for fired power generating unit according to claim 2, is characterized in that,
Rate of change preset range for the measured value at described temperature point place is-10 DEG C/min to+10 DEG C/min;
The rate of change preset range regulating the measured value at measuring point place for described water level is-100mm/ minute to+100mm/ minute;
Auxiliary vapour to the rate of change preset range of boiler sootblowing steam pressure measuring value for described auxiliary vapour system related pressure measuring point place is-200kPa/ minute to+200kPa/ minute;
Rate of change preset range for the measured value at described feedwater flow measuring point place and described solidifying discharge measuring point place is-100t/h/ minute to+100t/h/ minute;
Rate of change preset range for the measured value at described main vapour pressure measuring point place is-1MPa/ minute to+1MPa/ minute;
Rate of change preset range for the measured value at described air pressure system measuring point place is-2kPa/ minute to+2kPa/ minute;
Rate of change preset range for the measured value at described furnace pressure measuring point place is-200Pa/ minute to+200Pa/ minute.
4. the analog quantity measuring point monitoring equipment for fired power generating unit according to any one of claim 1-3, it is characterized in that, described analog quantity measuring point monitoring equipment also comprises high limit judging unit and/or lower bound judging unit, described high limit judging unit and/or described lower bound judging unit are connected between described data capture unit and alarm unit, when detecting that described measured value is greater than preset upper limit and/or is less than pre-determined lower limit, export the signal driving alarm unit to report to the police.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953988A (en) * | 2016-05-30 | 2016-09-21 | 中国神华能源股份有限公司 | Boiler and method and device for detecting internal leakage of heating surface thereof |
| CN106369598A (en) * | 2016-08-31 | 2017-02-01 | 自贡华西能源工业有限公司 | Monitoring system of CFB smoke generation equipment |
| CN110500571A (en) * | 2019-08-15 | 2019-11-26 | 国网河南省电力公司电力科学研究院 | A kind of pre-warning and control method and system of fired power generating unit vapor (steam) temperature rapid decrease |
| CN111176231A (en) * | 2019-12-23 | 2020-05-19 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Method for monitoring change rate of important parameter and giving alarm in advance |
| CN113074833A (en) * | 2021-03-31 | 2021-07-06 | 重庆广通实业发展有限责任公司 | Machine room health state early warning system and method |
| WO2021238012A1 (en) * | 2020-05-26 | 2021-12-02 | 南方电网调峰调频发电有限公司 | Self-adaptive super-real-time unit operating condition start-up state prediction method |
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2015
- 2015-05-04 CN CN201520280629.6U patent/CN204612758U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953988A (en) * | 2016-05-30 | 2016-09-21 | 中国神华能源股份有限公司 | Boiler and method and device for detecting internal leakage of heating surface thereof |
| CN106369598A (en) * | 2016-08-31 | 2017-02-01 | 自贡华西能源工业有限公司 | Monitoring system of CFB smoke generation equipment |
| CN110500571A (en) * | 2019-08-15 | 2019-11-26 | 国网河南省电力公司电力科学研究院 | A kind of pre-warning and control method and system of fired power generating unit vapor (steam) temperature rapid decrease |
| CN110500571B (en) * | 2019-08-15 | 2020-10-30 | 国网河南省电力公司电力科学研究院 | Early warning control method and system for rapid reduction of steam temperature of thermal power generating unit |
| CN111176231A (en) * | 2019-12-23 | 2020-05-19 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Method for monitoring change rate of important parameter and giving alarm in advance |
| WO2021238012A1 (en) * | 2020-05-26 | 2021-12-02 | 南方电网调峰调频发电有限公司 | Self-adaptive super-real-time unit operating condition start-up state prediction method |
| US11761859B2 (en) | 2020-05-26 | 2023-09-19 | Csg Power Generation Co., Ltd. | Method for self-adaption faster-than-real-time working condition start-up state prediction and estimation of unit |
| CN113074833A (en) * | 2021-03-31 | 2021-07-06 | 重庆广通实业发展有限责任公司 | Machine room health state early warning system and method |
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