If the underwater cable is compared to the arms and legs of various submarine observation platforms, then the underwater connector is just like a joint. The underwater connector is one of the important parts to ensure the normal operation of underwater equipment. It can realize the transmission of light, electrical signals and electrical energy, as well as mechanical connection.Recently, QM connector 300-meter underwater push pull connector project passed the appraisal of new electric connector products.

It is understood that the underwater push pull connector can be directly completed in the underwater push and pull process, has been widely used in the undersea observation network, offshore oil production platform, underwater engineering machinery and underwater power distribution system and other fields.

QM underwater push and pull connector should not only meet the seal requirement of plug and pull state during application, but also meet the dynamic seal requirement -- close the seal when the plug is not inserted, and keep the seal when the plug is inserted and put in place.However, its working environment is often thousands of meters underwater, and the "piston" and "tube wall" are hard to avoid deformation under great pressure.In addition, the underwater pressure creates a huge pressure difference between the internal cavity and the external surface, making the connector difficult to unplug.Therefore, the technology and process of underwater plug and unplug connectors are very difficult.

Since the 1980s, underwater push and pull connectors have been applied and developed, but the domestic market of underwater plug and unplug connectors has been completely monopolized by foreign countries.

Independently by QM connector enterprise self-raised funds, the project project, now completed the development of underwater electrical connector plug 4 core work, broke through the plug socket longitudinal sealing technology, underwater dynamic plug seal technology and key technologies, such as electrical insulation technology, set up the design of underwater electrical connector plug technology platform, processing technology platform, experimental platform, the product through a third party full performance test, and lake experiment many times.

Experts of the appraisal committee highly appraise the RESEARCH and development of QM connectors for new underwater push pull electric connectors, think that they have completely independent intellectual property rights, and their performance and indexes are at the leading level in China, and call for accelerating the promotion and application to meet the needs of Marine development.