Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Power station boiler fan efficiency real-time online calculation method based on DCS parameters

A power plant boiler and calculation method technology, applied in calculation, data processing applications, instruments, etc., can solve the problems of uneven distribution of flow field, difficulty in ensuring measurement accuracy, time-consuming and labor-intensive problems, etc.

Inactive Publication Date: 2021-09-10
ZHEJIANG ZHENENG TECHN RES INST +1
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The economics of fan operation is related to the economics of the entire unit operation. Currently, power plants lack the means to understand the economics of fan operation. To understand the operation performance of fans, it is necessary to entrust a qualified test unit in accordance with DL / T 469-2004 "Power Station Boiler Fans On-site performance test" is not only time-consuming and labor-intensive, but also difficult to guarantee the measurement accuracy due to the uneven and unstable distribution of the flow field, and it does not have the real-time performance monitoring of the fan. The operation personnel of the power plant have no fan operation adjustment refer to

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Power station boiler fan efficiency real-time online calculation method based on DCS parameters
  • Power station boiler fan efficiency real-time online calculation method based on DCS parameters
  • Power station boiler fan efficiency real-time online calculation method based on DCS parameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The system as a blower opening system, such as fan system schematic diagram figure 2 Indicated. like figure 1 Shown, the real time power plant boiler fan efficiency calculation method based DCS parameter, comprising the steps of:

[0052] Step 1, the fan axis of the fan shaft system obtained from the motor supporting mechanical power W s Effect of inhalation air from the atmosphere, the air enters the blower through the body after a short fan inlet duct, after the fan impeller driven, air leakage and the like is ignored, the air velocity v 2 Delivered to the fan outlet duct; real-time recording of atmospheric ambient air pressure p a Record the fan motor input power W m , Fan inlet static pressure p 1 , Fan inlet air absolute temperature T 1 , P static pressure fan outlet 2 Fan outlet air absolute temperature T 2 ; Fan inlet cross-sectional area was measured to be A 1 ; Fan outlet area measured as A 2 ; Process air intake fan, the recording surface of the heat loss from the...

Embodiment 2

[0088]Taking 1 a fan in a power plant as an example, the fan efficiency is calculated using the method in Example 1, and the performance test results of the fan performance test, the calculation and alignment results are shown in Table 1, from the comparison result, The relative deviation calculated by the above method is less than ± 5%, and the accuracy is high.

[0089] Table 1 Fan performance test calculation and comparison results

[0090] parameter name symbol unit Working condition 1 Working condition 2 Working condition 3 Working condition 4 Atmospheric pressure p a

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a power station boiler fan efficiency real-time online calculation method based on DCS parameters. The method comprises the steps that a fan shaft in a fan system obtains parameters from a matched motor; the mass flow rate of air delivered by a fan is calculated: an equation is listed according to energy balance, fan outlet static pressure is obtained through calculation, an ECS system of a DCS monitors input electric power of a fan motor in real time, and the mechanical power of the fan shaft can be obtained according to the efficiency of the motor; the air power of the fan is calculated; and the fan efficiency is calculated. The method has the beneficial effects that along with the development of the technology, the function of the DCS configured by a unit is powerful, the arranged measuring points are perfect, the DCS is generally provided with the measuring points of the inlet and outlet medium temperature, pressure, inlet and outlet differential pressure, fan motor power and the like of a power station boiler fan, the measuring points are utilized to carry out real-time online calculation on the fan efficiency, operation guidance and reference are provided for operators, and the accuracy is high.

Description

Technical field [0001] The present invention belongs to the field of energy calculation and assessment fan power plant, particularly to a method for on-line calculation based on fan efficiency power plant boiler DCS parameter. Background technique [0002] Fan Coal Fired Power Plants is an important auxiliary equipment, boilers generally are equipped with blower, induced draft fan and a fan, is divided into axial and centrifugal type, with the unit to develop high-capacity, power station boilers to configure the axial fans majority. Economic relations fans running to the economy of the entire plant operation, the current lack of understanding of the power plant economic means of fan operation, to understand the operating performance of the fan, to be commissioned by a qualified test units in accordance 469-2004 "power plant boiler fans DL / T field test performance "field tests, not only time consuming, and because of the instability and non-uniformity of flow distribution, the m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06393G06Q50/06
Inventor 陈勤根杨威茅建波张海丹陈王若尘郎宁胡红伟
Owner ZHEJIANG ZHENENG TECHN RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com