Underwater detection device

The invention discloses an underwater detection device, and relates to the technical field of hydraulic engineering measurement. The underwater detection device comprises a shell, a rotary union, an air-guiding pipe, a sealed cabin, a pressure sensor and a cable; through the sealed cabin structure, the pressure sensor and liquid are isolated; by measuring air pressure in the sealed cabin, the liquid level is calculated, and the technical problems that a traditional underwater detection device is prone to being blocked, not easy to clean and prone to be interfered by flowing speed are solved. The underwater detection device is easy to clean, not prone to being blocked, resistant to water interference and high in precision, and has good economic benefits. 本发明公开了种水下探测装置，涉及水利测量技术领域，包括外壳、转接头、导气管、密封舱、压力传感器、线缆；通过密封舱结构，将压力传感器和液体隔离，通过测量密封舱内的空气压力，计算液位高度，克服了传统水下探测装置易堵塞、不易清洁、且容易被流速干扰等的技术问题，实现了种清洗简单，不易堵塞、抗水流干扰、精度高的水下探测装置，具有良好的经济效益。