Pressure testing pressure transmission cylinder for gas well

The utility model discloses a pressure measuring and transmitting cylinder for a gas well, comprising a cylinder. The utility model is characterized in that: the cylinder comprises an upper cylinder body (2), a connecting cylinder (3), an outer pipe (5), an inner pipe (6), a plug (7) and a sealing part (4), the outer and the inner pipe (5),(6) are connected with the lower end of the connecting cylinder (3), an annular space of the inner pipe (6) and the outer pipe (5) is communicated with the inner chamber of the inner pipe (6), constructing a U-shaped pipe structure, which upper is connected with the upper cylinder body (2), and the plug (7) is arranged in the lower end of the outer pipe (5). The utility model has the advantages of being widely applicable to the pressure inspecting process in the production well for oil, gas and water, and being particularly applicable to the gas well.