Energy-saving two-phase flow steam trap

Abstract

The invention discloses an energy-saving two-phase flow steam trap which comprises a reducer tee (1), a water inlet reducing pipe (2), a throat pipe (3), a water outlet increasing pipe (4) and a phase-change signal pipe (5), wherein the water inlet reducing pipe, the throat pipe and the water outlet increasing pipe are coaxially arranged in the reducer tee, a cavity is reserved between the throat pipe and the inner wall of the reducer tee and is communicated with the phase-change signal pipe in the vertical direction of the reducer tee, a plurality of drainage runners (6) are arranged in the throat pipe, a combined rectangular phase-change signal hole (7) is arranged at the part of each drainage runner, corresponding to the outer diameter of the throat pipe, and is communicated with the drainage runner, and in such a way, multiple groups of phase-change signal holes are arranged on the outer diameter circumference of the throat pipe. On the premise that the working principle of a two-phase flow steam device is not changed and on the condition of the same drainage quantity, the energy-saving two-phase flow steam trap reduces steam consumption as much as possible, has strong adaptability to the load change of a turbine set, effectively reduces equipment operating noise and cost, improves the operating safety and reliability and can be used for accurately control water level.

Description

technical field [0001] The invention belongs to the technical field of steam traps, and mainly relates to a steam-liquid two-phase flow steam trap. Background technique [0002] In the 1990s, the first generation of two-phase flow traps (also known as two-phase flow liquid level control devices) appeared, which are widely used in the water level control of various heat exchangers and expanders in electric power, chemical, petroleum, metallurgical and other enterprises. Control, in order to achieve the purpose of safe operation of equipment and energy saving and consumption reduction, it is an updated product of the traditional drain regulator. [0003] It uses the principle of "vapor-liquid two-phase flow" to continuously and automatically adjust the water level, abandoning the mechanical moving parts and electrical control components of the traditional water level controller, without any moving parts itself, which well overcomes the frequent failures of the traditional wate...

AI Technical Summary

Problems solved by technology

If the adjusted steam volume is large or the hydrophobic subcooling degree before the controller is not enough, the mixed hydrophobic itself may be a two-phase flow of steam and water, which not only has cavitation and vibration effects on pipelines and equipment, but also fails to achieve the purpose of complete drainage

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