The method of leak detection for the analysis of the issue open and analysis device of issuing open

摘要

This is the detection of leakage of exhaust gas in a simple and reliable through an analysis of the issue open to exhaust gas.The exhaust gas discharged from an exhaust port (7a) is admitted to the interior of a sampling unit of exhaust gas (10) along with the external air surrounding it.It is provided a mechanism for leak detection (50) to detect the leakage of exhaust gas from a sampling port (11).The mechanism of leak detection includes a temperature sensor includes a temperature sensor (51), and an external to internal temperature (52).And an instrument of temperature measurement (55) for measuring a difference between the internal and external temperature detected by the temperature sensor.A plurality of temperature sensors internal / external paired is prepared at equal intervals in the circumferential direction of the door of sampling.When a leakage occurs, the temperature of the sensors of internal temperature increases and the temperature difference between the temperature sensor and the internal temperature and external increases.Thus, the instrument of temperature measurement detects the leak.When there is a leak in a portion of the circumferential direction, only the temperature difference of the portion where the leakage occurs is increased, and the location of the leak is, therefore,Identified.