Abstract: The object of the present invention is to provide a stable isotope enrichment device and a stable isotope enrichment method capable of reducing the discharge amount of toxic or combustible substances or substances causing environmental load in the atmosphere and reducing the amount of raw materials used.

Abstract: The object of the present invention is to provide a stable isotope concentrating device that has high energy efficiency and can reduce equipment costs, and provides a stable isotope concentrating device including a distillation column group in which multiple distillation columns are cascaded, and the distillation column group includes: a tray column group including one or more tray columns; and a packing column group including one or more packing columns, and the packing column group is located on a secondary side of the tray column group.

Abstract: An object of the present invention is to provide a carbon stable isotope enrichment method that does not require safety measures against combustibility and toxicity and that enables high-concentration 13C enrichment without isotope scrambling, and the present invention provides a carbon stable isotope enrichment method including a distillation step for enriching carbon tetrafluoride stable isotope molecules containing 13C by distilling raw material carbon tetrafluoride containing multiple types of carbon tetrafluoride stable isotope molecules in a distillation column group in which multiple distillation columns are cascaded.

Abstract: A metal collar attached in a through-hole of FRP member includes first and second collar members. The first collar member includes outer and inner circumferential surfaces. The outer circumferential surface is in contact with a hole inner circumferential surface of the through-hole. A slit is formed in a part in a circumferential direction of the first collar member. The second collar member applies a pressing force radially outward to at least a part of the inner circumferential surface of the first collar member or a pressing force to inner surfaces of the slit in a direction in which the inner surfaces separate from each other in the circumferential direction. The second collar member is held in the first collar member by reaction of the pressing force, deforms the first collar member for diameter expansion with the pressing force, and presses the outer circumferential surface against the hole inner circumferential surface.

Abstract: A metal collar attached in a through-hole of an FRP member includes first and second collar members. The first collar member includes outer and inner circumferential surfaces. The outer circumferential surface is in contact with a hole inner circumferential surface of the through-hole. A slit is formed in a part in a circumferential direction of the first collar member. The second collar member applies a pressing force radially outward to at least a part of the inner circumferential surface of the first collar member or a pressing force to inner surfaces of the slit in a direction in which the inner surfaces separate from each other in a circumferential direction. The second collar member is held in the first collar member by reaction of the pressing force, deforms the first collar member for diameter expansion with the pressing force, and presses the outer circumferential surface against the hole inner circumferential surface.

Abstract: An electrode stacking device includes a stacking unit that is disposed between a positive electrode conveying unit conveying a separator-equipped positive electrode and a negative electrode conveying unit conveying a negative electrode, and includes a plurality of stages of stacking sections on which the separator-equipped positive electrode and the negative electrode are stacked, a conveying control unit that controls a drive section to hold a plurality of the separator-equipped positive electrodes at height positions corresponding to the plurality of stages of stacking section and controls a drive section to hold a plurality of the negative electrodes at height positions corresponding to the plurality of stages of stacking sections, a push-out unit that simultaneously pushes out the plurality of separator-equipped positive electrodes toward the plurality of stages of stacking sections, and a push-out unit that simultaneously pushes out the plurality of negative electrodes toward the plurality of stages of s

Abstract: An electrode stacking device is an electrode stacking device for stacking electrodes supplied by a conveying device and forming an electrode stacked body, including an electrode support that receives the electrodes supplied by the conveying device and supports the electrodes, a mounting member to which a plurality of electrode supports is attached, a stacked unit having stacked portions of a plurality of levels on which the electrodes are stacked, and a discharge portion that discharges the electrodes supported by the plurality of electrode supports toward the stacked portions of the plurality of levels, in which the discharge portion discharges the electrodes at one interval with respect to the electrode supports per n levels (where n is an integer of 2 or more).

Abstract: An electrode stacking device includes a stacking unit that is disposed between a positive electrode conveying unit conveying a separator-equipped positive electrode and a negative electrode conveying unit conveying a negative electrode, and includes a plurality of stages of stacking sections on which the separator-equipped positive electrode and the negative electrode are stacked, a conveying control unit that controls a drive section to hold a plurality of the separator-equipped positive electrodes at height positions corresponding to the plurality of stages of stacking section and controls a drive section to hold a plurality of the negative electrodes at height positions corresponding to the plurality of stages of stacking sections, a push-out unit that simultaneously pushes out the plurality of separator-equipped positive electrodes toward the plurality of stages of stacking sections, and a push-out unit that simultaneously pushes out the plurality of negative electrodes toward the plurality of stages of s