| 摘要 |
The present invention relates to an enclosed type expansion tank sensing the expansion of a diaphragm, capable of preventing outflow of air and damage of a diaphragm by sensing excessive expansion of the diaphragm. When the excessive expansion of the diaphragm frequently occurs in the conventional enclosed type expansion tank, there are fears of the damage of the diaphragm, and the air inside the storage tank flows out, and thus the water impact preventing function may not be performed. In order to solve these problems, the present invention provides an enclosed type expansion tank in which a connection pipe is connected between a storage tank (10) and a main pipe, and a diaphragm (40) is provided inside the storage tank, wherein a coupling part (11) is formed at the top side of the storage tank (10), and a sensing device (50, 50a) for sensing the pressure of excessively expanded diaphragm (10) to generate an alarm is coupled at the coupling part (11). According to the present invention, since the sensing device for sensing excessive expansion of the diaphragm to generate an alarm is provided, the outflow of air can be prevented and thus the water impact preventing function can be smoothly performed. Further, the damage of the diaphragm caused by being compressed to an inside surface of the storage tank can be prevented, thereby managing the tank more easily. |
