Method and device for determining flue resistance of induced draft fan
A technology of flue resistance and determination method, applied in the field of electric power, can solve the problems of large margin, increased power consumption, large selection of induced draft fans, etc., and achieves the effect of strong engineering practical value, fast and accurate calculation
Active Publication Date: 2022-04-15
NORTH CHINA ELECTRICAL POWER RES INST +1
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the early stage of induced draft fan selection, due to inaccurate design and selection calculations, there is often a large margin, which leads to the problem of large selection of induced draft fans, which will cause the induced draft fan to work in the low-efficiency area for a long time, and the power consumption rate will be greatly increased increase, and even cause a series of problems, which is also one of the important restrictive factors for the energy-saving operation of power plant boilers
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0024] In order to solve the problem that the type of induced draft fan is too large in the prior art, it is necessary to accurately calculate the resistance of the induced draft fan flue, grasp the key to the resistance loss of the induced draft fan, and be aware of the type selection. Based on this, in the embodiment of the present invention, aiming at different flue ducts of induced draft fans in power plants, a general method for determining the flue resistance of induced draft fans in power plant boilers is designed to accurately calculate the flue resistance of i...
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
Login to View More Abstract
The invention discloses a method and device for determining the resistance of an induced draft fan flue, wherein the method includes: selecting the longest equal-section section from the outlet of the boiler furnace to the chimney, and calculating the flue gas volume of the section; Calculate the frictional resistance from the boiler furnace outlet to the chimney according to the flue gas volume of the section; calculate the local resistance of each pipeline component from the boiler furnace outlet to the chimney according to the flue gas volume in the section; calculate the frictional resistance from the boiler furnace outlet to the chimney, and Calculate the local resistance of each pipe component from the boiler furnace outlet to the chimney, and calculate the flue resistance of the induced draft fan. The invention can realize fast and accurate calculation of the resistance of the flue of the induced draft fan, grasp the key of the loss of the resistance of the flue of the induced draft fan, and provide a reference for selecting and matching the boiler with a practical induced draft fan.
Description
technical field [0001] The invention relates to the field of electric power technology, in particular to a method and a device for determining the resistance of an induced draft fan flue. Background technique [0002] The induced draft fan is an important auxiliary equipment of the boiler in the power plant, and it is also the main power-consuming equipment in the side auxiliary equipment of the boiler, occupying a very important position. In a thermal power plant, the induced draft fan is installed before the boiler flue dust collector and the chimney, and its function is to extract the flue gas from the boiler and discharge it into the chimney. In the early stage of induced draft fan selection, due to inaccurate design and selection calculations, there is often a large margin, which leads to the problem of large selection of induced draft fans, which will cause the induced draft fan to work in the low-efficiency area for a long time, and the power consumption rate will be ...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20Y02T90/00
Inventor 李媛园赵振宁孙亦鹏李金晶宁晓宇
Owner NORTH CHINA ELECTRICAL POWER RES INST