Water-sealing tank for water-electrolytic hydrogen making equipment

The invention discloses a water-sealing tank for water-electrolytic hydrogen making equipment. The water-sealing tank comprises a hydrogen making equipment water-sealing tank, a hydrogen gas collecting tank, an oxygen gas collecting tank, an electrolysis device, a negative electrode and a positive electrode, wherein an electrolyte solution is provided inside the hydrogen making equipment water-sealing tank; the electrolysis device is arranged on the bottom of the inner side of the hydrogen making equipment water-sealing tank; the left end of the top of the electrolysis device is equipped withthe negative electrode; a hydrogen gas tube is in sleeve connection on the top of the negative electrode; the outer part of the hydrogen gas tube is connected with the hydrogen gas collecting tank; the right end of the top of the electrolysis device is equipped with the positive electrode; the oxygen gas tube is in sleeve connection on the top of the positive electrode; the outer part of the oxygen gas tube is connected w