The invention discloses a ground
methane tank capable of regulating
methane pressure. The ground
methane tank comprises a methane
storage tank (1) and a fermenting tank (6) with a feed inlet (2), a feed outlet (3), a methane outlet (4) and a water outlet (5). The methane
storage tank (1) and the fermenting tank (6) compose a split type structure and are communicated with each other by a methane
pipe. An upper end of the methane
storage tank (1) is an exhaust opening (11). A lower end of the methane storage tank (1) is arranged in a
pool (8). The bottom of the methane storage tank (1) is communicated with the
pool (8). The invention also discloses a manufacturing method of the ground methane tank capable of regulating
methane pressure. The ground methane tank capable of regulating
methane pressure adopts the split type structure of the methane storage tank (1) and the fermenting tank (6) and can regulate
methane pressure in the methane storage tank (1) to maintain throughout the balance between the methane pressure and the
atmospheric pressure. The ground methane tank capable of regulating methane pressure can be formed directly from flexible materials through
curling and thus overcoming volume limitation. The ground methane tank capable of regulating methane pressure is suitable for large-scale production and popularization, has a simple structure, is beneficial for manufacture, and is convenient for use.