Natural circulation boiler

A natural circulation and boiler technology, applied in the direction of promoting water circulation, etc., can solve the problems of water flooding in the horizontal separator and reducing the separation capacity of steam and water.

Inactive Publication Date: 2015-02-11
HEILONGJIANG DAMING DAIRY MACHINERY
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AI Technical Summary

Problems solved by technology

High water level causes water flooding in horizontal

Method used

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  • Natural circulation boiler

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings.

[0012] A natural circulation boiler, consisting of a steam collecting chamber 1, a steam equalizing orifice plate 2, a jacket space 3, a downcomer 4, an anti-rotation device 5, a steel mesh separator 6, a horizontal separator 7 and a louver separator 8, After the saturated steam is drawn out from the drum, it is introduced into the upper header of the inlet flue of the steam-cooled cyclone separator through the saturated steam connecting pipe, and after descending the cooling flue, it is introduced into the lower header of the steam-cooled cyclone separator through the connecting pipe, and is connected by the cladding wall The tubes are introduced into the lower headers of the front and rear cladding walls, and go upwards into the lower headers of the tundish wall, that is, the inlet header of the low-temperature superheater. The high-temperature superheater in the flu...

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Abstract

A natural circulation boiler comprises a steam collecting chamber, a steam evening pore plate, a jacket space, a down pipe, a rotation preventing device, a screen separator, a horizontal separator and a louver separator. After being guided out of a boiler barrel, saturated steam is guided into an upper header at an inlet pass position of a steam-cooled cyclone separator by a saturated steam connection pipe, is guided into a lower header of the steam-cooled cyclone separator by a connection pipe after downing to a cooling pass, is guided into a front wall-enclosure lower header and a rear wall-enclosure lower header by wall-enclosure connection pipes, goes upwards to enter a middle wall-enclosure lower header, namely a low-temperature superheater inlet header, cools a rear-pass low-temperature superheater pipe nest after flowing reversely upwards and returns to a high-temperature superheater in a tail shaft rear pass from the boiler, and finally, qualified superheated steam is guided out of two sides of a high-temperature superheater outlet header.

Description

Technical field: [0001] The invention relates to a mechanical device, in particular to a natural circulation boiler. [0002] Background technique: [0003] Since the drum is a combination of static equipment, such as horizontal separators, louver separators, etc., the operator cannot directly operate these equipments. The operator can only adjust the feed water pump or the feed water regulating valve, and control the water level of the steam drum to affect the operation of the boiler. The normal water level of the boiler is 76mm below the center line of the drum. Long-term operation above or below this water level will affect the performance of the separator. If the drum water level is 125mm higher than the normal water level (the highest safe water level or high alarm level), the DCS will send out an alarm; if it is higher than 200mm (the highest water level or high water level trip), the boiler will automatically shut down. A low water level also makes the separator le...

Claims

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Application Information

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IPC IPC(8): F22B37/34
Inventor 李永强
Owner HEILONGJIANG DAMING DAIRY MACHINERY
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