System and method for measuring leakage rate of drain valve of thermodynamic system

Abstract

The invention discloses a thermodynamic system drain valve leakage rate measuring system and method.The thermodynamic system drain valve leakage rate measuring system is characterized in that a heat measuring unit is arranged on a drain pipeline at the output end of a drain valve and comprises a heat exchanger, a radiator, a circulating pump and temperature measuring elements at the hot end and the cold end of the heat exchanger; the leakage flow of the drain valve is calculated according to the heat balance principle by calculating the heat exchange amount of the heat exchanger in the heat measurement unit, so that the leakage amount of the drain valve is measured in real time. The method is clear in principle, simple in system and high in operability, facilitates dynamic monitoring of the unit, can improve the operation economy of the unit, and is an innovative technology suitable for energy conservation and efficiency improvement of all working units with drain valves.

Description

Technical field [0001] The present invention belongs to the field of thermal power generation technology, relates to a hydrophobic valve leakage measurement system and method, in particular a thermal system hydrophobic valve leakage measurement system and method. Background [0002] In a thermodynamic generator set, the heat pipe needs to be set up with a hydrophobic pipe to ensure safety under unconventional conditions, but the unit needs to maintain a good tightness of the trap valve on the trap pipe during normal operation to prevent the leakage of steam or high-quality water. In actual operation, some trap valves will leak, resulting in increased costs for replacing traps, losing a lot of energy, and causing a decrease in unit economy and safety performance. [0003] In the prior art, it is often through the installation of temperature measurement points in the pipeline after the trap valve or directly through manual on-site observation to determine whether the trap valve is ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a thermal system drain valve leakage measurement system and method for the problem that the leakage of the drain valve cannot be detected, so that the safety and economical efficiency of the unit cannot be evaluated, so as to achieve the goal of detecting the leakage of the drain valve of the thermal system The purpose of measuring the quantity, and then accurately evaluating the actual impact of the valve internal leakage on the unit economy

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