<p>To provide a double pipe apparatus which prevents gas flowing through an outer pipe and an inner pipe from leaking outside the outer pipe. The double pipe apparatus (10) according to an embodiment includes an outer pipe (11) and an inner pipe (12) inserted into the outer pipe (11), and regulates a flow of a gas (A) flowing through the double pipe apparatus. The double pipe apparatus (10) includes a flow regulating valve (13) which regulates the flow of the gas (A) flowing through the inner pipe (12), a valve stem (14) which supports the flow regulating valve (13) and which penetrates the outer pipe (11) and the inner pipe (12), and fluid leakage preventing parts (16) including a bellows (15) which is provided between the outer pipe (11) and the inner pipe (12) and which prevents the gas (A) from leaking outside the outer pipe (11).</p>
申请公布号
WO2009119919(A1)
申请公布日期
2009.10.01
申请号
WO2009JP56999
申请日期
2009.03.27
申请人
MITSUBISHI HEAVY INDUSTRIES, LTD.;PEBBLE BED MODULAR REACTOR (PTY) LIMITED;TAKEDA, NORIYUKI;DOI, SHOICHI