Deep-sea emergency reciprocating cable cutting device without built-in power source

Abstract

The invention discloses a deep-sea emergency reciprocating cable cutting device without a built-in power source, and belongs to the technical field of marine deep submergence detection equipment. According to the deep-sea emergency reciprocating cable cutting device without the built-in power source, a piston top rod, a hollow piston rod and a top rod cover form a hydraulic cylinder structure form, the hollow piston rod, a cylinder tail cover, a cylinder barrel, a plunger barrel and a plunger head form a hydraulic supercharger structure form, the sea water pressure is converted into the built-in hydraulic oil pressure by using the control of a two-position two-way sea water solenoid valve and a hydraulic on-off valve, the oil pressure is used as the power for shearing, after once shearing,a cutter head can be restored to the initial position by using the sea water pressure, and reciprocating and frequent shearing action of a cable is achieved accordingly; and meanwhile, as the oil-water separation design is adopted in the deep-sea emergency reciprocating cable cutting device, a main moving part can be prevented from being polluted by sea creatures.

Description

technical field [0001] The present invention relates to a deep sea emergency hydraulic cable cutting device without a built-in power source, in particular to a hydraulic emergency cable cutting device without a special power source for deep sea underwater cable platform (such as deep sea towing body, deep sea ROV, etc.) equipment, The device can realize reciprocating multiple shearing, and belongs to the technical field of marine deep-diving detection equipment. Background technique [0002] With the development of marine engineering, large-depth underwater towed systems or deep-sea ROVs have received widespread attention as a deep-sea exploration platform, such as deep-sea target search, deep-sea geological survey, deep-sea environmental investigation, etc. Generally speaking, due to the needs of towing or power supply and communication transmission, such towing systems or deep-sea ROV equipment are connected to the mother ship platform through towing cables or umbilical ca...

AI Technical Summary

Problems solved by technology

[0004] 1. The acoustic receiving unit using the acoustic release device must be within the coverage area of ​​the deck acoustic unit release signal. At the same time, there must be no obstruction between the acoustic receiving unit on the equipment and the acoustic signal unit on the deck. If there is an obstruction, the acoustic receiving unit on the equipment must It is very likely that the unit cannot receive the acoustic signal normally, resulting in the inaction of the acoustic release device and failure of the release of the cable;

[0005] 2. It is more effective to use the deep-sea hydraulic shearing device to cut the cable, and it can perform reciprocating multiple shears to ensure that the towline is cut and separated. However, the hydraulic system of the deep-sea hydraulic shearing device is often complicated, and a set of hydraulic power is required. source, the weight and volume are large, and the risk of system reliability will increase, which is very unfavorable for the light, small and reliable design of underwater detection equipment;

[0006] 3. The method of cutting cables with deep-sea electric shearing devices also has the same problems as hydraulic shearing devices, and the tow cables are generally armored cables with a larger diameter. According to the electric characteristics, compared with hydraulic shearing devices, the shearing is the same thickness The volume and weight of the armored cable will be larger;

[0007] 4. There is no built-in power source for the shearing device that uses the pressure of deep sea seawater, and the device can be light and small. However, this type of device generally requires seawater to communicate with the hydraulic cylinder, which belongs to the category of seawater hydraulics, and has high requirements for device materials. The main moving parts inside the structure are easily fouled by seawater organisms. At the same time, this type of device can only achieve one shearing action through seawater pressure, and does not have the function of reciprocating multiple shearing, so the reliability is poor

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