A method for controlling the temperature of the main steam after the high temperature superheater of the boiler

Abstract

The invention relates to the technical field of temperature control, and discloses a method for controlling the temperature of main steam after a high-temperature superheater of a boiler, which includes the following steps: S1. Install the low-temperature superheater, the medium-temperature superheater and the high-temperature superheater in sequence in fixed positions, and select a suitable The main controller is the central device for regulating the entire steam temperature; S2. Add a first serpentine steam pipe between the low-temperature superheater and the medium-temperature superheater, and a second snake between the medium-temperature superheater and the high-temperature superheater Shaped steam pipe; S3. Install the first temperature measuring probe, the second temperature measuring probe, the first electromagnetic valve and the second electromagnetic valve on the inner side of both ends of the first serpentine steam pipe and the second serpentine steam pipe respectively. The main steam temperature control method after the high-temperature superheater of the boiler has the advantages of external cooling operation, which not only prevents the steam from carrying water to affect subsequent production and use, but also controls the temperature more accurately, effectively ensuring the quality of steam temperature control.

Description

Technical field [0001] The present invention relates to the field of temperature control technology, specifically a boiler high temperature superheater after the main steam temperature control method. Background [0002] Superheater is the boiler from the saturation temperature to the superheating temperature of the components, also known as steam superheater, the current power plant needs to use the superheater to further improve the saturated steam temperature, in order to ensure the energy conversion efficiency of the generator set. [0003] In the actual power generation, it is necessary to regulate the superheated steam temperature, the steam temperature is too high will make the superheater tube wall metal strength decrease to burn out the high temperature section of the superheater, resulting in a great safety hazard, the superheated steam temperature is low will reduce the energy conversion efficiency of the generator set, resulting in waste of energy. [0004] Patent pub...

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Problems solved by technology

[0008] Aiming at the deficiencies of the prior art, the present invention provides a method for controlling the temperature of the main steam after the high-temperature superheater of the boiler. The external cooling operation not only prevents the steam from carrying water to affect the subsequent production and use, but also controls the temperature more accurately. The advantages of effectively ensuring the quality of steam temperature control solve the problem that the cooling water is still in direct contact with the steam inside the steam pipe, so that there is still a certain error in the cooling accuracy, and the moisture carried by the steam has a certain impact on the subsequent use and operation , for some operations with precise requirements, it is necessary to add water removal equipment, which makes the production cumbersome and costly

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