Harmless water seal pore ring shape pneumatic die cushion device of protecting of low pressure is surveyed to not hard up circle

The utility model relates to a harmless water seal pore ring shape pneumatic die cushion device of protecting of low pressure is surveyed to not hard up circle, including annular pneumatic die cushion, pressure boost hose, pressure monitoring appearance, supercharging device, annular pneumatic die cushion is equipped with the check valve through pressure boost hose connection pressure monitoring appearance and supercharging device on the pressure boost hose. The utility model discloses an advantage embodies: it is showing to protect water seal hole effect, use the check valve door to realize the pressurize of annular pneumatic die cushion and stabilize the operation, external pressure boost part need not the whole test equipment that integrates and uses the pressure that test equipment provides to carry out the hole sealing operation, has solved the problem of equipment integration, use the overlength air hose to carry out remote pressure boost, can satisfy the detection operation of various deep drillings.