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CN105003427A - Online efficiency monitoring method of condensate pump of thermal power generating unit - Google Patents

Online efficiency monitoring method of condensate pump of thermal power generating unit Download PDF

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Publication number
CN105003427A
CN105003427A CN201510376764.5A CN201510376764A CN105003427A CN 105003427 A CN105003427 A CN 105003427A CN 201510376764 A CN201510376764 A CN 201510376764A CN 105003427 A CN105003427 A CN 105003427A
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condensate pump
data
thermal power
power unit
condensate
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甘智勇
张利
张宇
周连升
刘卫平
王建
屈斌
王梓越
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State Grid Corp of China SGCC
State Grid Tianjin Electric Power Co Ltd
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State Grid Corp of China SGCC
State Grid Tianjin Electric Power Co Ltd
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Abstract

本发明涉及一种火电机组凝结水泵效率在线监测方法,包括步骤:采集模块采集所需凝结水泵实时运行数据;采集网对接收的传输数据进行重新编码、隔离;数据处理模块对数据进行数据范围的判断和取平均值;计算模块对接收数据计算凝结水泵扬程、凝结水泵有效功率及凝结水泵效率;数据存储服务器接收数据、并进行数据分类和存储;显示以表格和曲线形式呈现的凝结水泵效率及历史运行数据。本发明以图表和历史曲线的形式反映了火电机组凝结水泵效率和历史运行数据,帮助运行人员掌握火电机组凝结水泵效率,为火电机组凝结水泵系统的经济运行提供参考。

The invention relates to an online monitoring method for the efficiency of a condensate pump of a thermal power unit, comprising the steps of: an acquisition module collects the required real-time operation data of the condensate pump; the acquisition network recodes and isolates the received transmission data; and the data processing module performs data range adjustment on the data Judging and averaging; the calculation module calculates the head of the condensate pump, the effective power of the condensate pump, and the efficiency of the condensate pump for the received data; the data storage server receives the data, classifies and stores the data; displays the efficiency of the condensate pump in the form of tables and curves and Historical operating data. The invention reflects the efficiency of the condensate pump of the thermal power unit and historical operation data in the form of charts and historical curves, helps operators to grasp the efficiency of the condensate pump of the thermal power unit, and provides reference for the economical operation of the condensate pump system of the thermal power unit.

Description

火电机组凝结水泵效率在线监测方法On-line Monitoring Method of Condensate Pump Efficiency in Thermal Power Units

技术领域technical field

本发明属于火力发电节能技术领域,特别是一种火电机组凝结水泵效率在线监测方法。The invention belongs to the technical field of thermal power generation and energy saving, in particular to an online monitoring method for the efficiency of a condensate pump of a thermal power unit.

背景技术Background technique

凝结水泵是火力发电机组主要辅机设备之一,火电机组凝结水泵效率目前只能通过试验计算获得,还没有能够实时监测火电机组凝结水泵效率的方法,致使火电机组凝结水泵的经济运行缺乏必要的技术支持。The condensate pump is one of the main auxiliary equipment of the thermal power unit. The efficiency of the condensate pump of the thermal power unit can only be obtained through experimental calculation. Technical Support.

发明内容Contents of the invention

本发明的目的是针对现有技术的不足,而提出一种火电机组凝结水泵效率在线监测方法。The object of the present invention is to propose an online monitoring method for the efficiency of a condensate pump of a thermal power unit aiming at the deficiencies of the prior art.

本发明解决其技术问题是采取以下技术方案实现的:The present invention solves its technical problem and realizes by taking the following technical solutions:

一种火电机组凝结水泵效率在线监测方法,包括步骤如下:A thermal power unit condensate pump efficiency online monitoring method, comprising the following steps:

⑴火电机组凝结水泵实时运行数据采集模块从运行机组分散控制系统服务器采集所需火电机组凝结水泵实时运行数据,并将实时运行数据发送至火电机组凝结水泵实时数据采集网;(1) The real-time operation data acquisition module of the condensate pump of the thermal power unit collects the real-time operation data of the condensate pump of the thermal power unit from the server of the distributed control system of the operating unit, and sends the real-time operation data to the real-time data acquisition network of the condensate pump of the thermal power unit;

⑵火电机组凝结水泵实时数据采集网对接收的传输数据进行重新编码,隔离与外部其它数据传输网络的联系,并将重新编码结果发送至实时数据处理模块和数据存储服务器;(2) The thermal power unit condensate pump real-time data acquisition network re-encodes the received transmission data, isolates the connection with other external data transmission networks, and sends the re-encoding results to the real-time data processing module and data storage server;

⑶实时数据处理模块通过接收到的数据对火电机组凝结水泵原始运行数据进行判断和处理,对于数据信号依次完成数据范围的判断和取平均值,并将处理结果发送至火电机组凝结水泵效率计算模块;(3) The real-time data processing module judges and processes the original operating data of the condensate pump of the thermal power unit through the received data, completes the judgment and average value of the data range in turn for the data signal, and sends the processing results to the condensate pump efficiency calculation module of the thermal power unit ;

⑷火电机组凝结水泵效率计算模块对接收数据计算当前运行工况下火电机组凝结水泵扬程和火电机组凝结水泵有效功率,进而计算出火电机组凝结水泵效率,并将计算结果发送至火电机组凝结水泵效率监测系统主显示屏和数据存储服务器;⑷ The thermal power unit condensate pump efficiency calculation module calculates the received data to calculate the thermal power unit condensate pump lift and thermal power unit condensate pump effective power under the current operating conditions, and then calculates the thermal power unit condensate pump efficiency, and sends the calculation results to the thermal power unit condensate pump efficiency Monitoring system main display screen and data storage server;

⑸数据存储服务器同时接收来自于火电机组凝结水泵实时数据采集网和火电机组凝结水泵效率计算模块的数据,并完成数据的分类和存储,以供使用人员对历史数据的调取和后续处理;(5) The data storage server simultaneously receives data from the real-time data acquisition network of the condensate pump of thermal power units and the efficiency calculation module of condensate pumps of thermal power units, and completes the classification and storage of data for the retrieval and subsequent processing of historical data by users;

⑹火电机组凝结水泵效率监测系统主显示屏以表格和曲线的形式同时呈现火电机组凝结水泵效率实时运行数据以及历史运行数据。⑹ The main display screen of the thermal power unit condensate pump efficiency monitoring system simultaneously presents the thermal power unit condensate pump efficiency real-time operating data and historical operating data in the form of tables and curves.

而且,所述步骤⑴中火电机组凝结水泵实时运行数据具体包括:凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q及凝结水泵电动机输入功率PgrMoreover, the real-time operation data of the thermal power unit condensate pump in step (1) specifically includes: condensate pump inlet pressure P 1 , condensate pump outlet pressure P 2 , condensate temperature T, condensate pump flow Q, and condensate pump motor input power P gr .

而且,所述步骤⑵中对接收的传输数据进行重新编码是将接收的凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q、凝结水泵电动机输入功率Pgr传输数据重新与时间数据包进行组合П进制数据编码。Moreover, recoding the received transmission data in step (2) is to recode the received condensate pump inlet pressure P 1 , condensate pump outlet pressure P 2 , condensate water temperature T, condensate pump flow Q, condensate pump motor input power P gr The transmission data is recombined with the time data packet for П-ary data encoding.

而且,所述步骤⑶中对于数据信号依次完成数据范围的判断具体步骤是:And, in described step (3), complete the judgment concrete steps of data range successively for data signal is:

①实时数据处理模块中设定每种数据信号的高低限量程范围;①Set the high and low limit range range of each data signal in the real-time data processing module;

②将实时数据处理模块接收到的每种数据信号分别与高低限量程范围进行比较,如果在量程范围内,则判断数据合理可用,如果不在量程范围内,则判断数据不合理,并进行报警提示;②Compare each data signal received by the real-time data processing module with the high and low limit ranges. If it is within the range, it will judge that the data is reasonable and available. If it is not within the range, it will judge that the data is unreasonable and give an alarm prompt ;

③对于采用双重或多重测点的数据,在完成数据合理性判断之后,对所有测点数据进行算术平均,并将平均值作为该测点的最终值。③ For the data using double or multiple measuring points, after completing the data rationality judgment, carry out the arithmetic mean of all the measuring point data, and take the average value as the final value of the measuring point.

而且,所述步骤⑷中所述火电机组凝结水泵扬程的具体计算方法是:And, the specific calculation method of the thermal power unit condensate pump lift described in the step (4) is:

①由凝结水温度T计算凝结水密度ρ,用函数ρ=f(T)表示;① Calculate the condensed water density ρ from the condensed water temperature T, expressed by the function ρ=f(T);

②由凝结水泵流量Q计算凝结水泵进口管道流速V1,V1=Q/S1,其中S1为凝结水泵进口管道截面积,是已知参数;②Calculate the flow rate V 1 of the inlet pipe of the condensate pump from the flow Q of the condensate pump, V 1 =Q/S 1 , where S 1 is the cross-sectional area of the inlet pipe of the condensate pump, which is a known parameter;

③由凝结水泵流量Q计算凝结水泵出口管道流速V2,V2=Q/S2,其中S2为凝结水泵出口管道截面积,是已知参数;③Calculate the flow rate V 2 of the outlet pipe of the condensate pump from the flow rate Q of the condensate pump, V 2 =Q/S 2 , where S 2 is the cross-sectional area of the outlet pipe of the condensate pump, which is a known parameter;

④火电机组凝结水泵扬程H=(P2-P1)/(ρ×g)+Z2-Z1+(V2×V2-V1×V1)/(2×g),其中g为重力加速度,是已知常数;Z2为出口测量截面标高,是已知参数;Z1为进口测量截面标高,是已知参数。④Condensate pump head of thermal power unit H=(P 2 -P 1 )/(ρ×g)+Z 2 -Z 1 +(V 2 ×V 2 -V 1 ×V 1 )/(2×g), where g is the acceleration of gravity, which is a known constant; Z 2 is the elevation of the outlet measurement section, which is a known parameter; Z 1 is the elevation of the inlet measurement section, which is a known parameter.

而且,所述步骤⑷中火电机组凝结水泵有效功率的具体计算方法是:And, the specific calculation method of the effective power of the thermal power unit condensate pump in the step (4) is:

火电机组凝结水泵有效功率Pu=(Q×H×ρ×g)/1000,其中Q为凝结水泵流量,H为火电机组凝结水泵扬程,ρ为凝结水密度,g为重力加速度。The effective power of the condensate pump of the thermal power unit P u =(Q×H×ρ×g)/1000, where Q is the flow rate of the condensate pump, H is the head of the condensate pump of the thermal power unit, ρ is the density of the condensate, and g is the acceleration of gravity.

所述火电机组凝结水泵效率的具体计算方法为:The specific calculation method of the condensate pump efficiency of the thermal power unit is:

火电机组凝结水泵效率η=Pu/(Pgr×ηgr),其中Pu为火电机组凝结水泵有效功率,Pgr为凝结水泵电动机输入功率,ηgr为电动机效率,为已知参数。Thermal power unit condensate pump efficiency η=P u /(P gr ×η gr ), where P u is the effective power of the thermal power condensate pump, P gr is the input power of the condensate pump motor, and η gr is the motor efficiency, which is a known parameter.

而且,所述步骤⑸中数据分类的具体分类方法是:And, the concrete classification method of data classification in the described step (5) is:

①数据分为火电机组凝结水泵实时运行数据和计算结果数据,其中火电机组凝结水泵实时运行数据包括:凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q、凝结水泵电动机输入功率Pgr① The data are divided into real-time operation data and calculation result data of the condensate pump of the thermal power unit, among which the real-time operation data of the condensate pump of the thermal power unit include: condensate pump inlet pressure P 1 , condensate pump outlet pressure P 2 , condensate temperature T, condensate pump flow Q, Condensate pump motor input power P gr ;

②由于火电机组凝结水泵实时运行数据采集自运行机组分散控制系统服务器,在本数据存储服务器中不再进行保存,只完成计算结果数据同时间数据包同步存储。②Since the real-time operation data of the condensate pump of the thermal power unit is collected from the server of the distributed control system of the operating unit, it is no longer saved in this data storage server, and only the calculation result data is stored synchronously with the data packet at the same time.

而且,所述步骤⑹中表格具体包括凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q、凝结水泵电动机输入功率Pgr;所述曲线具体包括火电机组凝结水泵扬程随时间变化的曲线、火电机组凝结水泵有效功率随时间变化的曲线及火电机组凝结水泵效率随时间变化的曲线。Moreover, the table in the step (6) specifically includes the condensate pump inlet pressure P 1 , the condensate pump outlet pressure P 2 , the condensate temperature T, the condensate pump flow rate Q, and the condensate pump motor input power P gr ; The curve of water pump head changing with time, the curve of effective power of condensate pump of thermal power unit changing with time and the curve of efficiency of condensing water pump of thermal power unit changing with time.

本发明的优点和积极效果是:Advantage and positive effect of the present invention are:

本发明将火电机组凝结水泵实时运行数据采集模块、火电机组凝结水泵实时数据采集网、实时数据处理模块、火电机组凝结水泵效率计算模块、数据存储服务器、火电机组凝结水泵效率监测系统主画面连接在一起,构成火电机组凝结水泵效率在线监测系统。该系统通过实时计算能够反映火电机组凝结水泵运行状态的火电机组凝结水泵扬程、火电机组凝结水泵有效功率和火电机组凝结水泵效率,并以图表和历史曲线的形式呈现给运行人员,帮助运行人员掌握火电机组凝结水泵的总体性能,为火电机组凝结水泵系统的经济运行提供参考。The present invention connects the thermal power unit condensate pump real-time operation data acquisition module, the thermal power unit condensate pump real-time data acquisition network, the real-time data processing module, the thermal power unit condensate pump efficiency calculation module, the data storage server, and the main screen of the thermal power unit condensate pump efficiency monitoring system. Together, it constitutes an online monitoring system for the efficiency of condensate pumps in thermal power units. The system calculates the head of the condensate pump of the thermal power unit, the effective power of the condensate pump of the thermal power unit, and the efficiency of the condensate pump of the thermal power unit through real-time calculation, which can reflect the operation status of the condensate pump of the thermal power unit, and presents it to the operator in the form of charts and historical curves, helping the operator to grasp The overall performance of the condensate pump of the thermal power unit provides a reference for the economical operation of the condensate pump system of the thermal power unit.

附图说明Description of drawings

图1是本发明火电机组凝结水泵效率在线监测方法的系统连接示意图。Fig. 1 is a schematic diagram of the system connection of the online monitoring method for the condensate pump efficiency of a thermal power unit according to the present invention.

具体实施方式Detailed ways

以下结合附图对本发明实施例做进一步详述:需要强调的是,本发明所述的实施例是说明性的,而不是限定性的,因此本发明并不限于具体实施方式中所述的实施例,凡是由本领域技术人员根据本发明的技术方案得出的其它实施方式,同样属于本发明保护的范围。The embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings: It should be emphasized that the embodiments of the present invention are illustrative rather than restrictive, so the present invention is not limited to the implementation described in the specific embodiments. For example, all other implementations obtained by those skilled in the art according to the technical solution of the present invention also belong to the protection scope of the present invention.

一种火电机组凝结水泵效率在线监测方法,如图1所示,该方法使用的硬件系统包括:火电机组凝结水泵实时运行数据采集模块、火电机组凝结水泵实时数据采集网、实时数据处理模块、火电机组凝结水泵效率计算模块、数据存储服务器、火电机组凝结水泵效率监测系统主显示屏及运行机组分散控制系统(DCS)服务器,该方法的具体步骤如下:A thermal power unit condensate pump efficiency online monitoring method, as shown in Figure 1, the hardware system used in the method includes: thermal power unit condensate pump real-time operation data acquisition module, thermal power unit condensate pump real-time data acquisition network, real-time data processing module, thermal power unit The unit condensate pump efficiency calculation module, the data storage server, the main display screen of the thermal power unit condensate pump efficiency monitoring system and the operating unit distributed control system (DCS) server, the specific steps of the method are as follows:

⑴火电机组凝结水泵运行数据采集模块从运行机组分散控制系统(DCS)服务器采集所需火电机组凝结水泵实时运行数据,并将实时运行数据发送至火电机组凝结水泵实时数据采集网;(1) The thermal power unit condensate pump operation data acquisition module collects the required real-time operation data of the thermal power unit condensate pump from the running unit distributed control system (DCS) server, and sends the real-time operation data to the thermal power unit condensate pump real-time data acquisition network;

其中,火电机组凝结水泵实时运行数据具体包括:凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q、凝结水泵电动机输入功率PgrAmong them, the real-time operation data of the condensate pump of the thermal power unit specifically include: condensate pump inlet pressure P 1 , condensate pump outlet pressure P 2 , condensate temperature T, condensate pump flow Q, condensate pump motor input power P gr .

⑵火电机组凝结水泵实时数据采集网对接收的传输数据进行重新编码,隔离与外部其它数据传输网络的联系;并将重新编码结果发送至实时数据处理模块和数据存储服务器;(2) The thermal power unit condensate pump real-time data acquisition network re-encodes the received transmission data to isolate the connection with other external data transmission networks; and sends the re-encoding results to the real-time data processing module and data storage server;

其中,对接收的传输数据进行重新编码是将接收的凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q、凝结水泵电动机输入功率Pgr传输数据重新与时间数据包进行组合П进制数据编码。Among them, recoding the received transmission data is to re-transmit the received condensate pump inlet pressure P 1 , condensate pump outlet pressure P 2 , condensate water temperature T, condensate pump flow Q, condensate pump motor input power P gr and time The data packet is combined with П-ary data encoding.

⑶实时数据处理模块通过接收到的数据对火电机组凝结水泵原始运行数据进行判断和处理,对于数据信号依次完成数据范围的判断和取平均值,并将处理结果发送至火电机组凝结水泵效率计算模块;(3) The real-time data processing module judges and processes the original operating data of the condensate pump of the thermal power unit through the received data, completes the judgment and average value of the data range in turn for the data signal, and sends the processing results to the condensate pump efficiency calculation module of the thermal power unit ;

⑷火电机组凝结水泵效率计算模块对接收数据计算当前运行工况下火电机组凝结水泵扬程和火电机组凝结水泵有效功率,进而计算出火电机组凝结水泵效率,并将计算结果发送至火电机组凝结水泵效率监测系统主显示屏和数据存储服务器;⑷ The thermal power unit condensate pump efficiency calculation module calculates the received data to calculate the thermal power unit condensate pump lift and thermal power unit condensate pump effective power under the current operating conditions, and then calculates the thermal power unit condensate pump efficiency, and sends the calculation results to the thermal power unit condensate pump efficiency Monitoring system main display screen and data storage server;

⑸数据存储服务器同时接收来自于火电机组凝结水泵实时数据采集网和火电机组凝结水泵效率计算模块的数据,并完成数据的分类和存储,以供使用人员对历史数据的调取和后续处理;(5) The data storage server simultaneously receives data from the real-time data acquisition network of the condensate pump of thermal power units and the efficiency calculation module of condensate pumps of thermal power units, and completes the classification and storage of data for the retrieval and subsequent processing of historical data by users;

⑹火电机组凝结水泵效率监测系统主显示屏以表格和曲线的形式同时呈现火电机组凝结水泵效率的实时数据以及历史数据。⑹ The main display screen of the thermal power unit condensate pump efficiency monitoring system simultaneously presents the real-time data and historical data of the thermal power unit condensate pump efficiency in the form of tables and curves.

在本发明的具体实施中,所述步骤⑴中火电机组凝结水泵实时运行数据具体包括:凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q、凝结水泵电动机输入功率PgrIn the specific implementation of the present invention, the real-time operation data of the thermal power unit condensate pump in the step (1) specifically includes: condensate pump inlet pressure P 1 , condensate pump outlet pressure P 2 , condensate temperature T, condensate pump flow Q, condensate pump motor Input power P gr .

在本发明的具体实施中,所述步骤⑵中对接收的传输数据进行重新编码是将接收的凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q、凝结水泵电动机输入功率Pgr传输数据重新与时间数据包进行组合П进制数据编码。In the specific implementation of the present invention, recoding the received transmission data in the step (2) is to receive the condensate pump inlet pressure P 1 , condensate pump outlet pressure P 2 , condensate temperature T, condensate pump flow Q, condensate The input power P gr of the water pump motor is recombined with the time data packet and the transmitted data is coded in П-ary system.

在本发明的具体实施中,所述步骤⑶中对于数据信号依次完成数据范围的判断具体步骤是:In the concrete implementation of the present invention, in described step (3), complete the judgment concrete step of data range successively for data signal is:

①实时数据处理模块中设定每种数据信号的高低限量程范围;①Set the high and low limit range range of each data signal in the real-time data processing module;

②将实时数据处理模块接收到的每种数据信号分别与高低限量程范围进行比较,如果在量程范围内,则判断数据合理可用,如果不在量程范围内,则判断数据不合理,并进行报警提示;②Compare each data signal received by the real-time data processing module with the high and low limit ranges. If it is within the range, it will judge that the data is reasonable and available. If it is not within the range, it will judge that the data is unreasonable and give an alarm prompt ;

③对于采用双重或多重测点的数据,在完成数据合理性判断之后,对所有测点数据进行算术平均,并将平均值作为该测点的最终值。③ For the data using double or multiple measuring points, after completing the data rationality judgment, carry out the arithmetic mean of all the measuring point data, and take the average value as the final value of the measuring point.

在本发明的具体实施中,所述步骤⑷中所述火电机组凝结水泵扬程的具体计算方法是:In the specific implementation of the present invention, the specific calculation method of the thermal power unit condensate pump lift described in the step (4) is:

①由凝结水温度T计算凝结水密度ρ,用函数ρ=f(T)表示;① Calculate the condensed water density ρ from the condensed water temperature T, expressed by the function ρ=f(T);

②由凝结水泵流量Q计算凝结水泵进口管道流速V1,V1=Q/S1,其中S1为凝结水泵进口管道截面积,是已知参数;②Calculate the flow rate V 1 of the inlet pipe of the condensate pump from the flow Q of the condensate pump, V 1 =Q/S 1 , where S 1 is the cross-sectional area of the inlet pipe of the condensate pump, which is a known parameter;

③由凝结水泵流量Q计算凝结水泵出口管道流速V2,V2=Q/S2,其中S2为凝结水泵出口管道截面积,是已知参数;③Calculate the flow rate V 2 of the outlet pipe of the condensate pump from the flow rate Q of the condensate pump, V 2 =Q/S 2 , where S 2 is the cross-sectional area of the outlet pipe of the condensate pump, which is a known parameter;

④火电机组凝结水泵扬程H=(P2-P1)/(ρ×g)+Z2-Z1+(V2×V2-V1×V1)/(2×g),其中g为重力加速度,是已知常数;Z2为出口测量截面标高,是已知参数;Z1为进口测量截面标高,是已知参数。④Condensate pump head of thermal power unit H=(P 2 -P 1 )/(ρ×g)+Z 2 -Z 1 +(V 2 ×V 2 -V 1 ×V 1 )/(2×g), where g is the acceleration of gravity, which is a known constant; Z 2 is the elevation of the outlet measurement section, which is a known parameter; Z 1 is the elevation of the inlet measurement section, which is a known parameter.

在本发明的具体实施中,所述步骤⑷中所述火电机组凝结水泵有效功率的具体计算方法是:In the specific implementation of the present invention, the specific calculation method of the thermal power unit condensate pump effective power described in the step (4) is:

①火电机组凝结水泵有效功率Pu=(Q×H×ρ×g)/1000,其中Q为凝结水泵流量,H为火电机组凝结水泵扬程,ρ为凝结水密度,g为重力加速度。① The effective power of the condensate pump of the thermal power unit P u = (Q×H×ρ×g)/1000, where Q is the flow rate of the condensate pump, H is the head of the condensate pump of the thermal power unit, ρ is the density of the condensate, and g is the acceleration of gravity.

在本发明的具体实施中,所述步骤⑷中所述火电机组凝结水泵效率的具体计算方法为:In the specific implementation of the present invention, the specific calculation method of the thermal power unit condensate pump efficiency described in the step (4) is:

①火电机组凝结水泵效率η=Pu/(Pgr×ηgr),其中Pu为火电机组凝结水泵有效功率,Pgr为凝结水泵电动机输入功率,ηgr为电动机效率,为已知参数。① Thermal power unit condensate pump efficiency η = P u / (P gr × η gr ), where P u is the effective power of the thermal power unit condensate pump, P gr is the input power of the condensate pump motor, and η gr is the motor efficiency, which is a known parameter.

在本发明的具体实施中,所述步骤⑸中所述数据分类的具体分类方法是:In the specific implementation of the present invention, the specific classification method of the data classification described in the step (5) is:

①数据分为火电机组凝结水泵实时运行数据和计算结果数据,其中火电机组凝结水泵实时运行数据包括:凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q、凝结水泵电动机输入功率Pgr① The data are divided into real-time operation data and calculation result data of the condensate pump of the thermal power unit, among which the real-time operation data of the condensate pump of the thermal power unit include: condensate pump inlet pressure P 1 , condensate pump outlet pressure P 2 , condensate temperature T, condensate pump flow Q, Condensate pump motor input power P gr ;

②由于火电机组凝结水泵实时运行数据采集自运行机组分散控制系统(DCS)服务器,在本数据存储服务器中不再进行保存,只完成计算结果数据同时间数据包同步存储。② Since the real-time operation data of the condensate pump of the thermal power unit is collected from the distributed control system (DCS) server of the operating unit, it is no longer saved in this data storage server, and only the calculation result data is stored synchronously with the data packet at the same time.

在本发明的具体实施中,所述步骤⑹中所述表格具体包括凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q、凝结水泵电动机输入功率PgrIn the specific implementation of the present invention, the table in the step (6) specifically includes the condensate pump inlet pressure P 1 , the condensate pump outlet pressure P 2 , the condensate temperature T, the condensate pump flow rate Q, and the condensate pump motor input power P gr ;

其中,所述曲线具体包括:Wherein, the curve specifically includes:

①火电机组凝结水泵扬程随时间变化的曲线;① The curve of the head of the condensate pump of the thermal power unit changing with time;

②火电机组凝结水泵有效功率随时间变化的曲线;②The curve of the effective power of the condensate pump of the thermal power unit changing with time;

③火电机组凝结水泵效率随时间变化的曲线。③Curve of thermal power unit condensate pump efficiency changing with time.

Claims (8)

1.一种火电机组凝结水泵效率在线监测方法,其特征在于包括步骤如下:1. a thermal power unit condensate pump efficiency online monitoring method, is characterized in that comprising steps as follows: ⑴火电机组凝结水泵实时运行数据采集模块从运行机组分散控制系统服务器采集所需火电机组凝结水泵实时运行数据,并将实时运行数据发送至火电机组凝结水泵实时数据采集网;(1) The real-time operation data acquisition module of the condensate pump of the thermal power unit collects the real-time operation data of the condensate pump of the thermal power unit from the server of the distributed control system of the operating unit, and sends the real-time operation data to the real-time data acquisition network of the condensate pump of the thermal power unit; ⑵火电机组凝结水泵实时数据采集网对接收的传输数据进行重新编码,隔离与外部其它数据传输网络的联系,并将重新编码结果发送至实时数据处理模块和数据存储服务器;(2) The thermal power unit condensate pump real-time data acquisition network re-encodes the received transmission data, isolates the connection with other external data transmission networks, and sends the re-encoding results to the real-time data processing module and data storage server; ⑶实时数据处理模块通过接收到的数据对火电机组凝结水泵原始运行数据进行判断和处理,对于数据信号依次完成数据范围的判断和取平均值,并将处理结果发送至火电机组凝结水泵效率计算模块;(3) The real-time data processing module judges and processes the original operating data of the condensate pump of the thermal power unit through the received data, completes the judgment and average value of the data range in turn for the data signal, and sends the processing results to the condensate pump efficiency calculation module of the thermal power unit ; ⑷火电机组凝结水泵效率计算模块对接收数据计算当前运行工况下火电机组凝结水泵扬程和火电机组凝结水泵有效功率,进而计算出火电机组凝结水泵效率,并将计算结果发送至火电机组凝结水泵效率监测系统主显示屏和数据存储服务器;⑷ The thermal power unit condensate pump efficiency calculation module calculates the received data to calculate the thermal power unit condensate pump lift and thermal power unit condensate pump effective power under the current operating conditions, and then calculates the thermal power unit condensate pump efficiency, and sends the calculation results to the thermal power unit condensate pump efficiency Monitoring system main display screen and data storage server; ⑸数据存储服务器同时接收来自于火电机组凝结水泵实时数据采集网和火电机组凝结水泵效率计算模块的数据,并完成数据的分类和存储,以供使用人员对历史数据的调取和后续处理;(5) The data storage server simultaneously receives data from the real-time data acquisition network of the condensate pump of thermal power units and the efficiency calculation module of condensate pumps of thermal power units, and completes the classification and storage of data for the retrieval and subsequent processing of historical data by users; ⑹火电机组凝结水泵效率监测系统主显示屏以表格和曲线的形式同时呈现火电机组凝结水泵效率实时运行数据以及历史运行数据。⑹ The main display screen of the thermal power unit condensate pump efficiency monitoring system simultaneously presents the thermal power unit condensate pump efficiency real-time operating data and historical operating data in the form of tables and curves. 2.根据权利要求1所述的火电机组凝结水泵效率在线监测方法,其特征在于:所述步骤⑴中火电机组凝结水泵实时运行数据具体包括:凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q及凝结水泵电动机输入功率Pgr2. The on-line monitoring method for thermal power unit condensate pump efficiency according to claim 1, characterized in that: the real-time operation data of the thermal power unit condensate pump in the step (1) specifically includes: condensate pump inlet pressure P 1 , condensate pump outlet pressure P 2 , condensate temperature T, condensate pump flow Q and condensate pump motor input power P gr . 3.根据权利要求1所述的火电机组凝结水泵效率在线监测方法,其特征在于:所述步骤⑵中对接收的传输数据进行重新编码是将接收的凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q、凝结水泵电动机输入功率Pgr传输数据重新与时间数据包进行组合П进制数据编码。3. The on-line monitoring method for thermal power unit condensate pump efficiency according to claim 1, characterized in that: in said step (2), recoding the received transmission data is the received condensate pump inlet pressure P 1 , condensate pump outlet pressure P 2 , condensed water temperature T, condensed water pump flow Q, condensed water pump motor input power P gr The transmission data is recombined with the time data packet and П hexadecimal data encoding. 4.根据权利要求1所述的火电机组凝结水泵效率在线监测方法,其特征在于:所述步骤⑶中对于数据信号依次完成数据范围的判断具体步骤是:4. thermal power unit condensate pump efficiency online monitoring method according to claim 1, is characterized in that: among described step (3), complete the judgment concrete steps of data range successively for data signal is: ①实时数据处理模块中设定每种数据信号的高低限量程范围;①Set the high and low limit range range of each data signal in the real-time data processing module; ②将实时数据处理模块接收到的每种数据信号分别与高低限量程范围进行比较,如果在量程范围内,则判断数据合理可用,如果不在量程范围内,则判断数据不合理,并进行报警提示;②Compare each data signal received by the real-time data processing module with the high and low limit ranges. If it is within the range, it will judge that the data is reasonable and available. If it is not within the range, it will judge that the data is unreasonable and give an alarm prompt ; ③对于采用双重或多重测点的数据,在完成数据合理性判断之后,对所有测点数据进行算术平均,并将平均值作为该测点的最终值。③ For the data using double or multiple measuring points, after completing the data rationality judgment, carry out the arithmetic mean of all the measuring point data, and take the average value as the final value of the measuring point. 5.根据权利要求1所述的火电机组凝结水泵效率在线监测方法,其特征在于:所述步骤⑷中所述火电机组凝结水泵扬程的具体计算方法是:5. The thermal power unit condensate pump efficiency online monitoring method according to claim 1, characterized in that: the specific calculation method of the thermal power unit condensate pump lift described in the step (4) is: ①由凝结水温度T计算凝结水密度ρ,用函数ρ=f(T)表示;① Calculate the condensed water density ρ from the condensed water temperature T, expressed by the function ρ=f(T); ②由凝结水泵流量Q计算凝结水泵进口管道流速V1,V1=Q/S1,其中S1为凝结水泵进口管道截面积,是已知参数;②Calculate the flow rate V 1 of the inlet pipe of the condensate pump from the flow Q of the condensate pump, V 1 =Q/S 1 , where S 1 is the cross-sectional area of the inlet pipe of the condensate pump, which is a known parameter; ③由凝结水泵流量Q计算凝结水泵出口管道流速V2,V2=Q/S2,其中S2为凝结水泵出口管道截面积,是已知参数;③Calculate the flow rate V 2 of the outlet pipe of the condensate pump from the flow rate Q of the condensate pump, V 2 =Q/S 2 , where S 2 is the cross-sectional area of the outlet pipe of the condensate pump, which is a known parameter; ④火电机组凝结水泵扬程H=(P2-P1)/(ρ×g)+Z2-Z1+(V2×V2-V1×V1)/(2×g),其中g为重力加速度,是已知常数;Z2为出口测量截面标高,是已知参数;Z1为进口测量截面标高,是已知参数。④Condensate pump head of thermal power unit H=(P 2 -P 1 )/(ρ×g)+Z 2 -Z 1 +(V 2 ×V 2 -V 1 ×V 1 )/(2×g), where g is the acceleration of gravity, which is a known constant; Z 2 is the elevation of the outlet measurement section, which is a known parameter; Z 1 is the elevation of the inlet measurement section, which is a known parameter. 6.根据权利要求1所述的火电机组凝结水泵效率在线监测方法,其特征在于:所述步骤⑷中火电机组凝结水泵有效功率的具体计算方法是:6. The thermal power unit condensate pump efficiency online monitoring method according to claim 1, characterized in that: the specific calculation method of thermal power unit condensate pump effective power in the step (4) is: 火电机组凝结水泵有效功率Pu=(Q×H×ρ×g)/1000,其中Q为凝结水泵流量,H为火电机组凝结水泵扬程,ρ为凝结水密度,g为重力加速度。The effective power of the condensate pump of the thermal power unit P u =(Q×H×ρ×g)/1000, where Q is the flow rate of the condensate pump, H is the head of the condensate pump of the thermal power unit, ρ is the density of the condensate, and g is the acceleration of gravity. 所述火电机组凝结水泵效率的具体计算方法为:The specific calculation method of the condensate pump efficiency of the thermal power unit is: 火电机组凝结水泵效率η=Pu/(Pgr×ηgr),其中Pu为火电机组凝结水泵有效功率,Pgr为凝结水泵电动机输入功率,ηgr为电动机效率,为已知参数。Thermal power unit condensate pump efficiency η=P u /(P gr ×η gr ), where P u is the effective power of the thermal power condensate pump, P gr is the input power of the condensate pump motor, and η gr is the motor efficiency, which is a known parameter. 7.根据权利要求1所述的火电机组凝结水泵效率在线监测方法,其特征在于:所述步骤⑸中数据分类的具体分类方法是:7. The thermal power unit condensate pump efficiency online monitoring method according to claim 1, characterized in that: the specific classification method of data classification in the step (5) is: ①数据分为火电机组凝结水泵实时运行数据和计算结果数据,其中火电机组凝结水泵实时运行数据包括:凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q、凝结水泵电动机输入功率Pgr① The data are divided into real-time operation data and calculation result data of the condensate pump of the thermal power unit, among which the real-time operation data of the condensate pump of the thermal power unit include: condensate pump inlet pressure P 1 , condensate pump outlet pressure P 2 , condensate temperature T, condensate pump flow Q, Condensate pump motor input power P gr ; ②由于火电机组凝结水泵实时运行数据采集自运行机组分散控制系统服务器,在本数据存储服务器中不再进行保存,只完成计算结果数据同时间数据包同步存储。②Since the real-time operation data of the condensate pump of the thermal power unit is collected from the server of the distributed control system of the operating unit, it is no longer saved in this data storage server, and only the calculation result data is stored synchronously with the data packet at the same time. 8.根据权利要求1所述的火电机组凝结水泵效率在线监测方法,其特征在于:所述步骤⑹中表格具体包括凝结水泵进口压力P1、凝结水泵出口压力P2、凝结水温度T、凝结水泵流量Q、凝结水泵电动机输入功率Pgr;所述曲线具体包括火电机组凝结水泵扬程随时间变化的曲线、火电机组凝结水泵有效功率随时间变化的曲线及火电机组凝结水泵效率随时间变化的曲线。8. The online monitoring method for condensate pump efficiency of thermal power units according to claim 1, characterized in that: the table in step (6) specifically includes condensate pump inlet pressure P 1 , condensate pump outlet pressure P 2 , condensate temperature T, condensate Water pump flow Q, condensate pump motor input power Pgr ; the curves specifically include the curve of the head of the condensate pump of the thermal power unit varying with time, the curve of the effective power of the condensate pump of the thermal power unit varying with time, and the curve of the efficiency of the condensate pump of the thermal power unit varying with time .
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CN105889053A (en) * 2016-04-15 2016-08-24 国网天津市电力公司 On-line monitoring method for efficiency of drainage pump of heat supply network of cogeneration unit
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CN110195708A (en) * 2018-02-24 2019-09-03 焦作煤业(集团)有限责任公司电冶分公司 A kind of circulating water pump in thermal power plant efficiency on-line monitoring method
CN111535873A (en) * 2020-04-13 2020-08-14 浙江浙能技术研究院有限公司 Method for online monitoring efficiency of steam turbine set of water feed pump based on historical data
CN111535873B (en) * 2020-04-13 2022-03-25 浙江浙能技术研究院有限公司 Method for online monitoring efficiency of steam turbine set of water feed pump based on historical data
CN112333021A (en) * 2020-11-03 2021-02-05 华能国际电力股份有限公司南通电厂 Real-time Chinese soft photon tablet alarm and digital display device for thermal power generating unit
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