Underwater pipe airtightness detection device

The utility model relates to an underwater pipe air tightness detection device, which comprises a rack, an inflation pressure head, a sealing pressure head and a substrate, the rack is provided with a water tank, the water tank is filled with water, the inflation pressure head and the sealing pressure head are arranged on the substrate, and the inflation pressure head and the sealing pressure head are oppositely arranged at two ends in the water tank; the inflating pressure head is used for inflating the to-be-tested pipe, and the sealing pressure head is used for sealing the other end of the to-be-tested pipe; after the inflation pressure head completes inflation, the to-be-tested pipe is put into water and kept in the water for a period of time, whether bubbles are exposed or not is detected, and then detection is completed. 本实用新型涉及一种水下管材气密性检测装置，包括机架、充气压头、密封压头和基板，所述机架上设置有水槽，水槽内注满水，充气压头和密封压头设置在基板上，充气压头和密封压头设置在水槽内的两端相对设置；充气压头用于给待测管材充气，密封压头用于将待测管材的另外一端密封起来；充气压头在完成充气后，充气完成后将待测管材放入水中，并在水中保持一段时间，并检验是否有气泡露出，以此完成检验