| 摘要 |
<p>PURPOSE:To prevent filler gas from flowing in a hydraulic circuit by installing a float on a guide bar fixed to a shell in such a manner as to displace, and providing a poppet portion for closing a lower opening when the operating liquid level in the shell is lowered below the float. CONSTITUTION:Before an accumulator 1 is connected to a hydraulic circuit, nitrogen gas etc. is introduced from a gas valve 82 into a shell 2. A poppet portion 18B closes an oil port body 9A so that the filler gas 3 is filled to a desired pressure. When the oil port body 9A is connected to the hydraulic circuit and the valve is opened, an operating liquid 5 is introduced into the shell 2 by to a position where the pressure of the operating liquid 5 is balanced with the pressure of the filler gas 3, and during operation, a float 10 is elevated along a guide bar 7 with the going up and down of the operating liquid level 5a. When the most of the operating liquid 5 is fed out, the poppet portion 10B integral with the float 10 closes the seat surface of the oil port body 9A. Accordingly, the filler gas 3 is prevented from flowing in the hydraulic circuit.</p> |
