Low-flash-point fuel multi-user combined gas supply unit
A gas supply unit and multi-user technology, applied in the direction of gas/liquid distribution and storage, pipeline systems, mechanical equipment, etc., can solve problems such as inconvenient operation and management, hidden safety hazards, etc., and achieve the goals of improving safety, simplifying operation, and optimizing layout effect of space
Pending Publication Date: 2022-01-04
708TH RES INST OF CSSC
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Problems solved by technology
If the control valves are relatively scattered, it will bring inconvenience to the operation and management, and will also bring greater safety hazards
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[0043] figure 1 It is the system schematic diagram of the multi-user air supply combined protection unit for dual-fuel ship engine room of the present invention; figure 2 It is the internal principle and interface diagram of the valve box of the present invention; image 3 It is the internal principle and interface diagram of the electromagnetic valve group of the present invention; Figure 4 System flow for the normal gas supply of the present invention; Figure 5 It is the system flow of the present invention when the downstream pipeline of the gas main valve is cut off in a purge emergency; Figure 6 It is the system flow of the present invention when the upstream pipeline of the gas main valve is cut off in an emergency; Figure 7 It is the system flow maintained by the negative pressure of the valve box of the present invention.
[0044] Such as figure 1 As shown, the dual-fuel ship engine room multi-user air supply combination protection unit system provided by thi...
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The invention relates to a low-flash-point fuel multi-user combined gas supply unit, and belongs to the technical field of ship energy utilization. The low-flash-point fuel multi-user combined gas supply unit comprises an airtight valve box, a fuel gas pipeline, a nitrogen blowing system, a control system and a negative pressure ventilation protection system. Gas pipelines and a nitrogen blowing system communicated with the gas pipelines are arranged in the airtight valve box; the negative pressure ventilation protection system is arranged on the airtight valve box; the control system is respectively connected with the gas pipelines, the nitrogen blowing system and the negative pressure ventilation protection system; the plurality of gas pipelines are arranged; each gas pipeline is provided with a gas inlet and a gas outlet on the airtight valve box; and each gas pipeline in the airtight valve box is provided with an emergency cut-off gas valve. The invention provides an isolating device which integrates emergency cut-off of a fuel gas supply pipeline, nitrogen purging and combustible gas detection and has the functions of leakage detection, valve group response and air draft protection, and the safety and the operation flexibility of a ship gas supply system are facilitated.
Description
technical field [0001] The invention relates to a low-flash point fuel multi-user combined air supply unit, which belongs to the technical field of ship energy utilization. Background technique [0002] In order to fully meet the 2020 global sulfur limit (no use of fuel with a sulfur content exceeding 0.5%), and to fully comply with the relevant goals of the Paris Agreement on climate change and the IMO regulations on how to reduce greenhouse gas emissions, more and more More and more ships have been using LNG as fuel. Compared with the traditional use of heavy oil as fuel, the use of LNG as fuel can reduce the emission of carbon dioxide by 25%, reduce the emission of sulfur by 99%, reduce the emission of fine particles by 99%, and reduce the emission of nitrogen oxides by 85%. There will also be a 20% improvement in EEDI performance. In addition, the IMO's preliminary strategy for reducing emissions in the shipping industry adopted in April 2018 aims to reduce the carbon ...
Claims
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IPC IPC(8): F17D1/04F17D3/01F17D5/00F17D5/02
CPCF17D1/04F17D3/01F17D5/005F17D5/02
Inventor 龚旭诚黄津津秦俊郑福都燕家乐
Owner 708TH RES INST OF CSSC