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Soft measurement method for cooling water flow of condenser

A cooling water flow and condenser technology, which is used in measuring devices, instruments, electrical digital data processing, etc., can solve the problem that the condenser cooling water flow cannot be accurately measured online, the condenser cooling water pipe diameter is thick, and the flow To avoid abnormal operation accidents, improve operation reliability, and avoid accidents

Pending Publication Date: 2021-10-29
ZHEJIANG ZHENENG ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the condenser cooling water flow rate cannot be accurately measured online. The main reasons are: the condenser cooling water pipe diameter is thick (generally more than 2 meters), the flow rate is large (up to 40,000 tons per hour), and the location is poor (deep buried 4 to 5 meters underground), complex characteristics of the working medium (gas-water two-phase, seawater corrosion) and other factors, so there is a lack of suitable flowmeters to accurately measure the cooling water flow of the condenser

Method used

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  • Soft measurement method for cooling water flow of condenser
  • Soft measurement method for cooling water flow of condenser

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Embodiment 1

[0034] The invention provides a soft measurement method for condenser cooling water flow, and the measurement method comprises the following steps:

[0035] Step S1: Collect the real-time operation data of the DCS system of the turbo-generator set. The real-time operating data include the operating parameters and main data of the turbo-generator set, provide actual operating parameters for soft flow measurement, and analyze the influence of the cooling water flow of the condenser through the parameters factor;

[0036] Step S2: Perform statistics and analysis on the collected data to ensure that the parameters are accurate and there are no bad points, and prevent data distortion from causing errors in calculation results;

[0037] Step S3: According to the heat transfer balance principle of the cold and hot ends of the condenser, the internal heat transfer model of the condenser is established;

[0038] Step S4: Calculate the condenser cooling water flow rate based on the con...

Embodiment 2

[0040] The invention provides a soft measurement method for condenser cooling water flow, and the measurement method comprises the following steps:

[0041] Step S1: Collect the real-time operation data of the DCS system of the turbo-generator set. The real-time operating data include the operating parameters and main data of the turbo-generator set, provide actual operating parameters for soft flow measurement, and analyze the influence of the cooling water flow of the condenser through the parameters factor;

[0042] The collected data are shown in Table 1:

[0043] serial number parameter name unit symbol 1. load MW P 2. Condenser inlet cooling water temperature ℃ t 1

3. Condenser outlet cooling water temperature ℃ t 2

4. tide level m h 5. Condenser inlet cooling water pressure kPa p 1

6. Condenser outlet cooling water pressure kPa p 2

7. Condensate flow t / h G n

8. Condensate su...

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Abstract

The invention discloses a soft measurement method for cooling water flow of a condenser. The measurement method comprises the following steps: S1, acquiring real-time operation data of a DCS of a steam turbine generator unit, providing actual operation parameters for soft flow measurement, and analyzing factors influencing the condenser cooling water flow through the parameters; S2, carrying out counting, analyzing and the like on the collected data, and ensuring that parameters are accurate and have no dead pixels; S3, according to the condenser cold and hot end heat transfer amount balance principle, establishing a condenser internal heat exchange model; and S4, on the basis of the condenser cooling water parameters in the actual operation of the unit, calculating the flow of the condenser cooling water on the basis of the fluid mechanics flow equation. According to the soft measurement method for the cooling water flow of the condenser, soft measurement of the cooling water flow of the condenser is achieved, the cooling water flow can be adjusted in time according to the soft measurement result, and abnormal operation accidents are avoided; and the working efficiency is improved, and accidents are avoided.

Description

technical field [0001] The invention relates to the technical field of condensers, in particular to a soft measurement method for cooling water flow of a condenser. Background technique [0002] Power plants are the main enterprises that produce electricity, and they also consume a lot of energy. However, power plants also have great potential for energy saving. Energy saving and consumption reduction for the steam turbine operation of the power plant is the key link to effectively improve the efficiency of the power plant. Energy saving and consumption reduction can improve the efficiency of energy conversion, and then occupy a favorable position in the fierce market. The condenser of the steam turbine is the basis for ensuring the normal operation of the unit. Ensuring that the condenser of the steam turbine is in the best vacuum condition can reduce fuel consumption, prolong the service life of the entire unit, and improve economic benefits. As an important parameter ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G01D21/02
CPCG06F30/28G01D21/02G06F2113/08G06F2119/14G06F2119/08Y02P90/02
Inventor 翁建明陈跃明顾伟飞王志刚雷浩何天骄莫晓翎蒋宇轩
Owner ZHEJIANG ZHENENG ELECTRIC POWER
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