The invention discloses a
tail water recharge
system of a middle-deep geothermal well and a working method, and particularly relates to a recharge well, a vacuum breaker, a flowmeter, a
control system, a remote monitoring device, a steady flow tank, an
impurity filtering device, a vacuum detection device and a
temperature control device. According to the
tail water recharge
system of the middle-deep geothermal well and the working method, the vacuum breaker is additionally arranged in the recharge well, so that the problem of negative pressure generated in the recharge process is effectively solved, a vacuum column is prevented from being formed in a
heating system, the
heating effect is improved, the geothermal
dynamic monitoring work is simplified, and the working efficiency is improved. The vacuum breaker is arranged so that
tail water can be smoothly recharged into a heat storage layer, the situation that air enters a recharge
system is avoided, the quality of the tail water is kept, a recharge channel is prevented from being blocked, the recharge efficiency is improved, complex equipment such as a sand remover, a filtering tank and an exhaust tank does not need to be arranged, the
system structure is simplified, and the system cost is reduced. And meanwhile, the recharge efficiency is improved.