US 12,326,213 B2
Fluid check piping and electric power apparatus
Satoshi Hasumi, Tokyo (JP)
Assigned to TMEIC CORPORATION, Chuo-ku (JP)
Appl. No. 17/999,651
Filed by TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION, Chuo-ku (JP)
PCT Filed Apr. 16, 2021, PCT No. PCT/JP2021/015682
§ 371(c)(1), (2) Date Nov. 22, 2022,
PCT Pub. No. WO2022/219796, PCT Pub. Date Oct. 20, 2022.
Prior Publication US 2024/0337341 A1, Oct. 10, 2024
Int. Cl. F16L 55/00 (2006.01)
CPC F16L 55/00 (2013.01) [F16L 2201/40 (2013.01)] 2 Claims
OG exemplary drawing
 
1. An electric power apparatus, comprising:
a fluid check piping;
an apparatus housing in which the fluid check piping is provided;
an electrical equipment accommodated in the apparatus housing; and
a refrigerant piping that is provided in the apparatus housing and cools the electrical equipment using a liquid refrigerant,
wherein the fluid check piping comprises:
a piping main body which is arranged along a horizontal direction and in which the liquid refrigerant flows through an inside of the piping main body;
a check window which is provided on an upper portion of a circumferential wall of the piping main body and through which an inside of the piping main body is capable of being viewed from an outside of the piping main body; and
a check plate that is provided on an inner circumferential surface of the piping main body, that is rotatably arranged side-by-side with the check window, that droops by its own weight, and that rises so as to block the check window in response to a pressure of the liquid refrigerant, and
the fluid check piping is connected to at least any one of an inlet of the refrigerant piping in which the liquid refrigerant flows and an outlet from which the liquid refrigerant is discharged.