| 摘要 |
A leakage test apparatus for OPD(Overfill Prevention Device) is provided to prevent mechanical abrasion of joint portion of two-way valve and OPD since the joint portion is connected by sliding compression, maintaining reliable air-tightness, and conduct test on a plurality of OPD valves at a time. A leakage test apparatus for an OPD(Overfill Prevention Device) of an OPD valve consisting of a two-way valve(7) and an OPD(8), the leakage test apparatus comprises a plurality of leakage test units(20), a plurality of compression units, and a pressure supply unit(40). The plurality of leakage test units consists of a mounting member(21) where the OPD is mounted in a longitudinal direction, a plurality of guide members(22) whose one end is connected to the mounting member to the outer side of the OPD, a fixing member(23) spaced away from the mounting member in a facing direction and connected with the other ends of the guide members, and a sliding member(24) connected to the two-way valve of the OPD valve, capable of sliding movements along the guide member in between the mounting member and the fixing member. The plurality of compression units is capable of moving a sliding rod(34) connected to the two-way valve and penetrated into the fixing member, so as to allow the upper part of the OPD to make sliding compression joint and disjoint into an inner diameter of a joint portion of the two-way valve. The pressure supply unit is connected to the two-way valve, supplying compressed air needed for the test. The joint portion of the two-way valve is larger than an outer diameter of upper part of the OPD to prevent abrasion, and a packing is inserted to the joint portion to maintain air tightness when making compression joint with the end portion of the OPD.
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