Gas loading and unloading system used for compressed natural gas ship and working method for gas loading and unloading system

Abstract

The invention discloses a gas loading and unloading system used for a compressed natural gas ship. The gas loading and unloading system comprises a loading system, an unloading system and a loading operation system, wherein a plurality of tension sensors, two field electric control operation boxes, two pneumatic control boxes, two sets of shore-ship communication systems and two audible and visual alarms are connected to a central control system; and the loading system and the unloading system are connected to the loading operation system. According to the gas loading and unloading system used for producing the compressed natural gas ship disclosed by the invention, the loading operation system is additionally arranged in a control system of the compressed natural gas ship, and the electric control operation box and the pneumatic control box are arranged, the shore-ship communication systems are arranged and the audible and visual alarms are mounted, so that the use safety of the whole loading and unloading system is improved, and therefore, the automatic, integrated and intelligent control on the loading and unloading system is realized, and therefore, the needs of a user are met better.

Description

technical field [0001] The invention relates to a loading and unloading system, in particular to a gas loading and unloading system for producing compressed natural gas ships and a working method thereof. Background technique [0002] A compressed natural gas carrier refers to compressing natural gas to a certain pressure to greatly reduce its volume, storing it in a pressure-resistant cylinder on board and transporting it in gaseous form, but the temperature requirement is not very high, generally around room temperature. As the first choice for near-shore natural gas transportation, compressed natural gas carriers can achieve maximum economic benefits. At the same time, the use of compressed natural gas to transport natural gas does not require the construction of related conversion facilities on the shore, and can be directly transported to onshore gas storage stations by using connecting pipes. Because of this, we design and develop compression weather carrier gas loadin...

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Problems solved by technology

[0003] However, due to the immature technology of the existing loading and unloading system, various problems often appear in the process of use

For example: 1. It is still basically operated manually, and most of them use semi-automatic control, which will cause the entire installation and unloading process to be relatively slow, and there will also be problems with inaccurate control; 2. There is no timely communication between the ship and the shore , Once any problem occurs during the unloading process, the information on the ship and the shore cannot be notified to the other party in time, which may cause a serious accident, which will cause serious loss of life and property to the enterprise and staff; 3. Since the ship is On the water, its position is not easy to fix, and it is easy to shift during use. Once it exceeds the carrying range of the connection system between the ship and the shore, it will cause the installation and unloading of natural gas to be impossible, and even cause some unnecessary accidents. generation, etc., so the existing loading and unloading system on compressed weather ships still needs to be improved

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