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Gas gap pressure stabilizer

A voltage stabilizer and gas technology, applied in the direction of hull, hull design, hydrodynamic characteristics/hydrostatic characteristics, etc., can solve the problems of difficult implementation of gas lubrication drag reduction technology, low speed, etc.

Pending Publication Date: 2018-06-08
CSIC SHANGHAI MARINE ENERGY SAVING TECH DEV CO LTD
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AI Technical Summary

Problems solved by technology

Due to the low speed of low-speed ships, it is extremely difficult to implement gas lubrication drag reduction technology on low-speed ships

Method used

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Embodiment

[0045] Taking the open-top container ship applying the marine gas Gap voltage regulator provided by the present invention as an example, the open-top container ship is Changhang Yangshan No. 2 400-box open-top container ship with a total length of 122.8m, a molded width of 18.8m, and a molded depth of 8.6m. m, a draft of 4.8m, and an operating speed of 9 knots. In November 2016, it was retrofitted with gas lubrication and drag reduction. In order to make the gas evenly and stably ejected from the jet hole, 5 independent pressure stabilizing chambers are built in the cabin, such as Figure 5 shown.

[0046] The control system of each independent pressure stabilizing chamber is as follows: Figure 6 shown. The plenum chamber is a narrow and long cavity arranged at the bottom of the cabin, which can be a narrow and long gas channel formed by welding stainless steel components on the inner side of the bottom plate of the ship. The corresponding plenum chamber is provided with je...

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Abstract

The invention provides a gas gap pressure stabilizer. A gas rectification and pressure stabilization device is designed for a gas lubrication, resistance reduction and energy saving device for a ship.The stabilizer comprises N pressure stabilization cavities in a ship baseplate, m gas jetting holes are formed in the bottoms of the pressure stabilization cavities, and the N pressure stabilizationcavities are connected with gas supply equipment separately and fixed in the inner side or the outer side of the ship baseplate in the width direction of the ship, wherein m is larger than or equal to3, and N is larger than or equal to 1; the spacing distance between every two pressure stabilization cavities is 5-150 m, the shape of the cross section is rectangular, square, semicircular, semi-oval or wing-shaped, the interiors of the N pressure stabilization cavities are smooth, the N pressure stabilization cavities are independent from one another, and the volume (V) of the pressure stabilization cavities is equal to the specific value of CPQ to N, wherein Cp is a gas compression coefficient, Q is a gas supply amount of gas supply equipment, and N is the number of the pressure stabilization cavities; the gas jetting holes are formed in the bottom planes, parallel to the water flow direction, of the pressure stabilization cavities or formed in the ship baseplate in the pressure stabilization cavities.

Description

technical field [0001] The invention relates to the technical field of gas lubrication drag reduction, which is the primary condition and key technology in the gas lubrication drag reduction technology. More specifically, it relates to a voltage stabilizer that enables gas to be ejected stably and uniformly and maintains a gas layer stably. Background technique [0002] With the gradual increase of IMO's requirements for ship energy efficiency indicators, in order to achieve the goal of "increasing the energy efficiency of ships built in 2025 and later by 30% on the existing basis", only existing ship type optimization, main engine optimization and conventional hydropower Means such as energy-saving devices are difficult to realize. The research and development of new ship energy-saving and emission-reduction technology has therefore become a major topic in the field of ship research, and is also favored by the majority of ship owners. [0003] The gas lubrication drag redu...

Claims

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Application Information

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IPC IPC(8): B63B1/38
CPCB63B1/38Y02T70/10
Inventor 高丽瑾周伟新恽秋琴陈少峰徐杰
Owner CSIC SHANGHAI MARINE ENERGY SAVING TECH DEV CO LTD
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