Sleeve base type water spraying desuperheater

Abstract

The invention discloses a sleeve base type water spraying desuperheater. The sleeve base type water spraying desuperheater comprises a cylinder; a lining sleeve is arranged in the cylinder; and the cylinder is fixedly connected with the lower end of a main body pipe base. The sleeve base type water spraying desuperheater is characterized in that a nozzle reinforcing protective pipe and a nozzle pipe are coaxially arranged in the main body pipe base; the nozzle reinforcing protective pipe sleeves the outer side of the nozzle pipe; the upper end of the main body pipe base, the upper end of the nozzle reinforcing protective pipe and the upper end of the nozzle pipe communicate with outer, middle and inner layers of pipe orifices at the lower end of a sleeve base with the outer, middle and inner layers of pipe orifices; the pipe orifice at the upper end of the sleeve base with the outer, middle and inner layers of pipe orifices is connected with an external water spraying pipe; the tail end of the nozzle pipe is arranged in the cylinder; and a nozzle is arranged at the tail end of the nozzle pipe. Through totally sealed sleeve base with the outer, middle and inner layers of pipe orifices and the nozzle reinforcing protective pipe, the application range of the water spraying desuperheater is widened, and the safety and the reliability in the operating process of the water spraying desuperheater are improved; and the water spraying desuperheater is simple in structure and convenient to manufacture, assemble and maintain.

Description

technical field [0001] The invention relates to a water spraying device for a desuperheater, in particular to a casing seat type water spraying desuperheater, which is used in a boiler resuperheater system of a power station. Background technique [0002] The desuperheater is an important device used to adjust the steam temperature of the steam boiler. In a thermal power plant, if there is no desuperheater, the temperature of the steam at the outlet of the boiler cannot be controlled within the rated range, which will damage the boiler steam turbine and other components or cause major accidents. The regulation of steam temperature can be divided into two categories: flue gas side regulation and steam side regulation. The spray desuperheater is the main means to adjust the steam temperature on the steam side. [0003] Such as figure 1 As shown, it is a schematic diagram of the structure of the original single-tube seat with flange spray desuperheater device of the boiler. ...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a casing seat type water spray desuperheater with improved scope of application, simple structure, convenient assembly, easy maintenance, good high temperature resistance and pressure resistance, which solves the problem of traditional casing The tube-seat spray desuperheater has complex structure, low strength, low application range of design temperature and design pressure, cumbersome assembly process, inconvenient operation, and is not suitable for use in spray desuperheaters under high temperature and high pressure operating conditions

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