Free semi-floating ball rotary superheated steam trap

Abstract

The invention discloses a free semi-floating ball rotary superheated steam trap which is aimed at providing a steam trap which is small in mechanical failure probability, high in sealing reliability and great in overheating resistance. The stream trap disclosed in the invention is realized via the following technical solution: a top part of a transmitting tube is equipped with a check valve ball that allows only steam to flow into a valve body cavity along a transmitting tube passageway along with condensated water; under a condition of superheated steam, the check valve ball falls down due togravity of the check valve ball so as to closes the transmitting tube passageway, and superheated steam can be prevented from entering the valve body cavity and medium in the valve body cavity can beprevented from backflow; when high-temperature condensated water and steam flow in, thermal deformation of a bimetallic strip occurs, and a limiting sheet disposed at a middle part of an inner wall of a valve cover cavity is used for limiting warping height and a deformation direction of the bimetallic strip; under the limiting effects of the limiting sheet, the warping height of the bimetallic strip is reduced, and the bimetallic strip is deformed toward a side of a valve mouth, the semi-floating ball is in free contact with the valve mouth, and the semi-floating ball is no longer moved awayin an ejected manner. The free semi-floating ball rotary superheated steam trap disclosed in the invention can help solve a shortcoming that the semi-floating ball steam trap can only work under a condition of saturated vapor and cannot work under a condition of superheated steam.

Description

technical field [0001] The invention relates to a steam trap suitable for steam heating equipment and steam pipelines, capable of automatically removing condensed water, preventing steam leakage, and automatically removing air. Background technique [0002] In the prior art, there are many kinds of steam traps, each with different performances. The steam trap must be able to "identify" steam and condensed water in order to play the role of blocking steam and draining water. The "identification" of steam and condensate is based on three principles: density difference, temperature difference and phase change. Therefore, three types of steam traps classified into mechanical type, thermostatic type and thermodynamic type are manufactured according to the three principles. Thermostatic type includes bellows type, bimetallic type, bellows type, diaphragm type, wax type, etc. The mechanical type, also known as the float type, uses the density difference between condensed water a...

AI Technical Summary

Problems solved by technology

The disadvantage of the existing semi-float type steam trap is that only under the environment of saturated steam inside the semi-float, can a steam cavity be formed in the semi-float, surrounded by condensed water, and the semi-float is floated to trap water. The valve works normally. When the steam is superheated steam, it is difficult to condense into condensed water in time, so that the steam chamber surrounded by condensed water cannot be formed in the semi-floating ball. There is no buoyancy, and the semi-floating ball cannot close the valve nozzle, resulting in valve failure and leakage.

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