A gravity damping water seal device

Abstract

The invention provides a gravity damping water sealing device and belongs to the field of sealing devices. The gravity damping water sealing device comprises a reflow pipe, a housing and a sealing block. The bottom end of the reflow pipe is hermetically connected with a gland heater pipe; the top end of the reflow pipe extends into the housing; the bottom of the housing is hermetically connected with the reflow pipe. The sealing block is disposed at the top end of the reflow pipe. The reflow pipe is sealed under the gravity action of the sealing block. The housing is hermetically connected with a condenser pipe. According to the gravity damping water sealing device, the condenser pipe is hermetically connected with the housing; when the water level is lower than the top end of the reflow pipe, the sealing block seals the reflow pipe to prevent air in the reflow pipe from flowing into the housing, and accordingly, no air flows into a condenser and safety of a whole system is guaranteed.

Description

technical field [0001] The invention relates to the field of sealing devices, in particular to a gravity damping water sealing device. Background technique [0002] In the process of recovering working fluid in the condenser of the power plant, the shaft seal drain, the seal water of the feed water pump, and the outlet water of the drain cooler enter the water cycle through the water seal. During the whole process, there is negative pressure in the condenser. In order to prevent air from entering the whole system, each water recovery system is equipped with a water seal device, and the more common one is a single-stage water seal. [0003] Such as figure 1 As shown, the single-stage water seal structure includes an outer tube and an inner tube, the outer tube is about 10 meters high, the bottom is sealed, the top is open, the outer tube and the inner tube are installed concentrically, the bottom of the inner tube is open, and the junction of the outer tube and the inner tub...

AI Technical Summary

Problems solved by technology

[0004] This single-stage water seal device has a simple structure. During use, the water level in the outer tube is often low due to large changes in water flow and water temperature. When the water level is lower than the bottom of the inner tube, air will flow in from the outer tube. Inner pipe, entering the condenser, thus causing the accident

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