Question 213Steam Plants - Assistant Engineer70% to pass
The tube sheets installed in a fire-tube auxiliary boiler are normally connected by _______________.
AI Explanation
The correct answer is B) fire-tubes and stay-tubes.
In a fire-tube auxiliary boiler, the tube sheets are the large circular plates that the fire-tubes and stay-tubes are connected to. The fire-tubes allow the hot gases from the fire to pass through the boiler, while the stay-tubes help to support and brace the tube sheets against the internal pressure of the boiler. This connection of the tube sheets to the fire-tubes and stay-tubes is the normal method used in the construction of fire-tube boilers.
The other answer choices are incorrect because: A) girder stays are not used to connect the tube sheets, C) the external boiler plating is not directly connected to the tube sheets, and D) the tube sheets do not have separate crown sheets in a fire-tube boiler design.
Related Questions
#210 Which of the listed problems will happen when the water level of a fire-tube type auxiliary boiler approaches the crown sheet? #212 Which of the following statements concerning fire-tube boilers is correct? #214 Fusible plugs are installed in fire-tube boilers to _______________.#215 The boiler shown in the illustration would be classed as________________. Illustration MO-0064#217 Poor atomization accompanied by an elongated flame from a steam atomization burner is MOST likely caused by _______________.