Angle type tangentially fired boiler hydrodynamic force calculation method
A calculation method and boiler water technology, applied in the boiler field, can solve the problems of low safety and large difference in heat load, and achieve the effect of high safety reliability and accurate calculation
Inactive Publication Date: 2017-02-01
HARBIN BOILER
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Problems solved by technology
However, different combustion methods and design boundary conditions have large differences in heat load, so the safety of boiler hydrodynamic calculations using angular tangential combustion is directly related to the safety and reliability of boiler operation
However, the prior art has the problem of low security in the boiler hydrodynamic calculation method for angular tangential combustion
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[0017] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It should be understood, however, that in developing any such practical embodiment, many implementation-specific decisions must be made in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and those Restrictions may vary from implementation to implementation. Moreover, it should also be understood that development work, while potentially complex and time-consuming, would at least be a routine undertaking for those skilled in the art having the benefit of this disclosure.
[0018] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the ...
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The invention provides an angle type tangentially fired boiler hydrodynamic force calculation method. The angle type tangentially fired boiler hydrodynamic force calculation method comprises: determining a heat load distribution curve along the height and horizontal direction of a hearth according to a combustion manner; dividing a calculation loop of a water cooling wall according to the determined heat load distribution curve to obtain a plurality of loops; carrying out iteration solving on a pressure-flow equation in each loop of the plurality of loops and determining the flow of each loop; carrying out resistance balance calculation on each loop of the plurality of loops under the condition of considering influences on resistance by heat load; according to the calculated flow in each loop, determining outlet working medium temperatures in the middle and at the upper part of the water cooling wall; adjusting a pore diameter of a throttling pore ring, so as to enable the outlet working medium temperature of the water cooling wall of each loop at a lower hearth outlet to be uniform, and obtaining a current pore diameter of the throttling pore ring; checking the safety of a wall temperature of the water cooling wall; checking the instability of the water cooling wall. The angle type tangentially fired boiler hydrodynamic force calculation method is accurate in calculation result and high in safety in an actual application process.
Description
technical field [0001] The invention relates to the technical field of boilers, in particular to a hydrodynamic calculation method for an angular tangential boiler. Background technique [0002] Boilers with different combustion methods have large differences in heat load in the furnace. For boilers burning strong coking coal, the use of angular tangent circles can ensure a smaller tangent circle diameter and prevent coking in the water wall area. However, different combustion methods and design boundary conditions have great differences in heat load. Therefore, the safety of boiler hydrodynamic calculation using angular tangential combustion method is directly related to the safety and reliability of boiler operation. However, in the prior art, there is a problem of low safety in the boiler hydrodynamic calculation method for the angular tangential combustion method. Contents of the invention [0003] A brief overview of the invention is given below in order to provide a...
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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 王永杰宋宝军
Owner HARBIN BOILER