2results about How to "Make sure it's closed" patented technology

The utility model belongs to air conditioning technical field, concretely relates to a kind of inspection filling device for air conditioner circulation pipeline, including high pressure circulation pipe and low pressure circulation pipe, high pressure circulation pipe and low pressure circulation pipe are all equipped with three-way connector, the free pipe end of three-way connector is welded with vertical direct pipe of intercommunication, pressure control valve is installed on vertical direct pipe, bending pipe is installed on pressure control valve, and pressure gauge is installed in the lower free end of bending pipe, the free side of three-way connector is equipped with filling control valve.The utility model is by the pressure gauge of being set in the lower side of high pressure circulation pipe and low pressure circulation pipe, to intuitively monitor the high-low voltage state of refrigerant pipeline in room, it is convenient to judge and supplement refrigerant in time.Meanwhile, the filling control valve on three-way connector is not only closed by protection component, but also can be conveniently disassembled to control filling control valve, and refrigerant filling operation is carried out to circulation pipeline on indoor side, significantly improve operation safety.

The present application relates to oil and gas equipment technical field, provide a kind of offshore emergency blowout preventer, including main body, the first passage is opened in the vertical direction and passes through on the main body, second passage is opened in the horizontal direction in the main body, the second passage is opened with two, two The second passage is symmetrically arranged, the second passage and first passage are interconnected, sealing gate is slidably arranged in each second passage along the length direction of second passage, sealing element is arranged on the side wall of two sealing gates that are close to each other, driving assembly is arranged on the main body, and the driving assembly is used to drive sealing gate to move in second passage, the safety effect of the present application can improve blowout preventer, avoid well backflow.