The invention discloses a pressure stabilizing type non-negative pressure
water supply system which comprises a water inlet
pipe, a water inlet
pipe pressure stabilizing device, a
water supply power combination device and a
water supply pipe. The water inlet pipe pressure stabilizing device is integrally arranged on the water inlet pipe communicated with a municipal
tap water pipe, and the water inlet pipe is supplied to all users after being treated and pressurized by the water supply power combination device; the water inlet pipe pressure stabilizing equipment comprises a high-level water tank, a
hydraulic cylinder and a pressurizing
barrel, the high-level water tank is communicated with the water inlet pipe through an L-shaped pipe, a water replenishing valve is arranged on the L-shapedpipe, the bottom of the high-level water tank is communicated with the pressurizing
barrel through a folding pipe, a first electromagnetic control valve and a third
check valve are arranged on the folding pipe, and a
liquid level sensor is arranged in the high-level water tank; and an output shaft of the
hydraulic cylinder is fixedly connected with a
piston in the pressurizing
barrel, the bottomend of the pressurizing barrel is communicated with the water inlet pipe through a pressurizing pipe, and a second electromagnetic control valve and a fourth
check valve are arranged on the pressurizing pipe.