JP2519396Y2 - Structure of brackish water separator of multi-tube once-through boiler - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a vertical steam generator of a multi-tube once-through boiler.

[Prior art]

In a multi-tube once-through boiler, the water supplied from a water supply pump is usually supplied to the boiler body at a relatively low temperature directly or after heat exchange with blow water. There is a problem that oxygen causes corrosion of the boiler body. Conventionally, in order to reduce the dissolved oxygen in the feedwater, after the feedwater from the feedwater pump is supplied to the brackish water separator and mixed with the high temperature canned water in the brackish water separator,
A water supply method that supplies water to a boiler is known. However, when this water supply method is used in a conventional brackish water separator, the can water separated in the brackish water separator is diluted by the water supply, so that There was a problem that it was impossible to blow concentrated water having a concentration, and a large amount of blowing was necessary in order to reduce the concentration of can water in the entire boiler to below the specified concentration.

[Problems to be solved by the device]

An object of the present invention is to reduce dissolved oxygen contained in makeup water and blow can water having a high degree of concentration in a brackish water separator.

[Means for Solving the Problems]

In the present invention, the above-mentioned problems are solved by providing a partition plate and a guide plate inside the cyclone type vertical brackish water separator to divide it into a concentrated water chamber and a deaeration chamber.
A water supply port is provided in the degassing chamber, and high-temperature separated water and feed water are mixed and stirred to separate dissolved oxygen contained in the feed water. Further, the separated water having a high degree of concentration is stored in the concentrated water chamber, and is intermittently blown without being diluted by the water supply, thereby reducing the blow amount and the blow heat loss.

[Action]

The steam generated in the boiler can swirls into the brackish water separator through the steam inlet pipe, and is separated into dry steam and water by centrifugal force. This separated water is retained in the concentrated water chamber and is intermittently discharged from the concentrated water blow port without being diluted by the water supply. The remaining separated water passes through the gap between the inner wall of the brackish water separator barrel and the guide plate, or overflows the concentrated water chamber and is sent to the deaeration chamber. On the other hand, the water supply is mixed with the separated water overflowing from the degassing chamber through the water supply pipe and supplied into the boiler can. The dissolved oxygen contained in the feed water is separated by being mixed with the high temperature separated water and discharged from the steam outlet.

【Example】

An embodiment of the present invention will be described with reference to the drawings.
In the brackish water separator, a vertically long cylindrical columnar cylinder is provided with hemispherical or dish-shaped end plates above and below, and a steam outlet pipe 2 is installed in the upper part and a water ring pipe 3 is installed in the lower part as shown in FIG. Further, in order to prevent separated water droplets from being mixed with the steam outlet pipe 2 along the inner wall of the body, a part of the steam outlet pipe 2 is projected in the brackish water separator, and the skirt 12 is installed as shown in FIG. The steam inlet pipe 4 from the upper head of the boiler body is installed in the body of the brackish water separator 1 in the tangential direction of the cylindrical column as shown in FIG.

A partition plate 5 is provided below the steam inlet pipe 4 in the brackish water separator. The partition plate 5 is fixed to the inner wall of the body by welding, and the lower part of the body is divided into a concentrated water chamber 6 and a deaeration chamber 7. The guide plate 11 is connected to the upper part of the partition plate 5 and is provided with an inclination toward the concentrated water chamber side. A small-diameter hole 13 that communicates from the concentrated water tank 6 to the degassing chamber 7 is provided below the partition plate 5.

A concentrated water blow port 9 and a can water concentration sensor mounting port 8 are provided on the lower body of the concentrated water chamber 6. The water supply pipe 10 is attached to the side body of the degassing chamber 7 in the tangential direction of the cylindrical column as shown in FIG.

[0009]

[Advantage of the Invention] Since the separated water separated by the brackish water separator is retained in the concentrated water chamber and the concentrated water can be blown without being diluted with makeup water, the amount of concentrated water blown can be reduced. Be peeled off. In the degassing chamber of the brackish water separator, mixing the feed water with the separated water makes it possible to reduce the dissolved oxygen in the feed water, which reduces corrosion in the can and at the same time reduces the amount of chemical injection.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view

FIG. 2 is a perspective view from the AA cross section of FIG.

3 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 Brackish water separator body 2 Steam outlet pipe 3 Ring water pipe 4 Steam inlet pipe 5 Partition plate 6 Concentrated water chamber 7 Deaeration chamber 8 Can water concentration sensor mounting port 9 Concentrated water blow port 10 Water supply pipe 11 Guide plate 12 Skirt 13 hole

Claims (1)

(57) [Scope of utility model registration request] 1. A brackish water separator in which a steam outlet pipe 2 is attached to an upper portion, a steam inlet pipe 4 is attached to a barrel portion in a tangential direction to the barrel, and a ring water pipe 3 which is connected to a lower portion of a can is attached to a lower portion of the barrel. A partition plate 5 is provided below the steam inlet in the vessel to form a concentrated water chamber 6 and a deaeration chamber 7, and a guide plate 11 is provided which is connected to the upper part of the partition plate to guide the separated water to the concentrated water chamber 6, A structure of a brackish water separator characterized in that a concentrated water blow port 9 and a can water concentration sensor mounting port 8 are provided in the concentrated water chamber, and a water supply pipe 10 is provided in a deaeration chamber.