Heater tube gas leak detection device and heater tube gas leak detection method

摘要

PROBLEM TO BE SOLVED: To provide a gas leak detecting device for a heater tube and a gas leak detecting method for a heater tube capable of surely detecting a gas leak from a heater tube having a fine hole. According to the embodiment, an inner tube (10a) accommodating a heater body and an outer tube (10b) that surrounds the inner tube and is sealed are provided, and an outer tube (10b) is provided by a pressure adjusting mechanism (20) via a pipe (30). A gas leak detection device for the heater pipe 10 in which the gas pressure in the space between the inner pipe 10a and the inner pipe 10a is adjusted to a predetermined pressure value. The gas flow resistance is provided in the pipe 30 and locally makes it difficult for the gas to flow. A pressure detection unit 23 for detecting the gas pressure in the space between the outer pipe 10b and the inner pipe 10a between the gas flow resistance portion 21 in the pipe 30 and the heater pipe 10; Leak determining means 50 for determining whether gas is leaking from the heater tube 10 based on the detected pressure value obtained at 23. [Selection diagram] Figure 1