CN103691079A - Inert gas protection device for low-flash-point system of marine ship - Google Patents
Inert gas protection device for low-flash-point system of marine ship Download PDFInfo
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- CN103691079A CN103691079A CN201310733832.XA CN201310733832A CN103691079A CN 103691079 A CN103691079 A CN 103691079A CN 201310733832 A CN201310733832 A CN 201310733832A CN 103691079 A CN103691079 A CN 103691079A
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Abstract
The invention relates to an inert gas protection device for a low-flash-point system of a marine ship. The inert gas protection device comprises a nitrogen generator and a nitrogen collector, wherein the nitrogen generator is connected with the nitrogen collector through a delivery pipeline; the nitrogen collector is connected with a booster air compressor through a delivery pipeline; a plurality of nitrogen storage cylinders are respectively connected with the booster air compressor through delivery pipelines, and are all connected with pressure reducing valve group control stations through delivery pipelines. Both pressure control valves and isolating valves are arranged on all the nitrogen storage cylinders. The inert gas protection device has the benefits that the safety of the marine ship for transporting low-flash-point substances is effectively improved; the explosion rate of the transported low-flash-point substances in marine accidents is effectively reduced; the inert gas protection device can also be used as a standby gas choice for the marine ship.
Description
Technical field
The present invention relates to a kind of extra large work ship low-flash system inert gas protection device.
Background technology
The ocean engineering field specific boats and ships of low-flash material demand used transport, low-flash material blast and the possibility of fire large, to transportation, having relatively high expectations of storing.Inert gas protection device, by the combustion adjuvant in isolated burning three elements, reduces the probability having an accident, and improves safety and the reliability of transportation.The method that produces inert gas by boiler waste gas of using on oil tanker now because of take volume greatly, the reason such as the bad processing of refuse is not suitable for using on narrow and small extra large work ship.
Summary of the invention
The object of this invention is to provide a kind of extra large work ship low-flash system inert gas protection device, to overcome prior art above shortcomings.
The object of the invention is to be achieved through the following technical solutions:
A kind of extra large work ship low-flash system inert gas protection device; comprise nitrogen gas generator, nitrogen collector; described nitrogen gas generator is connected with nitrogen collector by transfer pipeline; described nitrogen collector is connected with pressurizing air press by transfer pipeline; if described pressurizing air press is connected with each and every one nitrogen storage gas cylinder respectively by transfer pipeline, described nitrogen storage gas cylinder is all connected with pressure-reducing valve group control station by transfer pipeline.
Further, on described nitrogen storage gas cylinder, be equipped with pressure-control valve.
Further, on described nitrogen storage gas cylinder, be equipped with isolating valve.
Further, pressure-reducing valve group control station is arranged on transfer pipeline end.
Beneficial effect of the present invention is: the security that has effectively improved extra large work Ship Transportation low-flash material; Effectively reduce the probability that the low-flash material that transports in marine accident is blasted; Can also be as the standby selection of extra large work gas peculiar to vessel.
Accompanying drawing explanation
With reference to the accompanying drawings the present invention is described in further detail below.
Fig. 1 is the layout drawing of extra large work ship low-flash system inert gas protection device (having 4 low-flash cabins and cofferdam) described in the embodiment of the present invention.
In figure:
1, nitrogen gas generator; 2, nitrogen collector; 3, pressurizing air press; 4, nitrogen storage gas cylinder; 5, pressure-reducing valve group control station; 6, transfer pipeline; 7, cofferdam; 8, low-flash cabin; 9, work air compressor machine.
The specific embodiment
As shown in Figure 1; a kind of extra large work ship low-flash system inert gas protection device described in the embodiment of the present invention; comprise nitrogen gas generator 1, nitrogen collector 2; described nitrogen gas generator 1 is connected with nitrogen collector 2 by transfer pipeline 6; described nitrogen collector 2 is connected with pressurizing air press 3 by transfer pipeline 6; if described pressurizing air press 3 is connected with each and every one nitrogen storage gas cylinder 4 respectively by transfer pipeline 6, described nitrogen storage gas cylinder 4 is all connected with pressure-reducing valve group control station 5 by transfer pipeline 6.
On described nitrogen storage gas cylinder 4, be equipped with pressure-control valve.On described nitrogen storage gas cylinder 4, be equipped with isolating valve.Pressure-reducing valve group control station 5 is arranged on transfer pipeline 6 ends.
The transfer pipeline 6 of inert gas generally selects 316L stainless steel to be advisable, for guaranteeing safety, practical minimizing releasable connection part.
The specific works of each device of this sea work ship low-flash system inert gas protection device thes contents are as follows:
1, nitrogen gas generator 1 is selected the separated nitrogen production by air separation method of film, and its principle is to take air as raw material, is keeping, under certain pressure, utilizing oxygen and nitrogen different infiltration rate in hollow-fibre membrane that oxygen, nitrogen separation are produced.This preparation method device structure is simple, volume is little, convenient operating maintenance, is relatively applicable to the feature of extra large work ship.The general design parameter of this nitrogen gas generator 1 has: air discharge pressure, air delivery temperature, air mass flow, nitrogen flow, nitrogen gas purity, effective diaphragm area, separating effect etc.Above parameter need to be carried out choose reasonable having determined after the volume of low-flash material and navigation need.The raw air of nitrogen gas generator 1 need to filter to guarantee the quality of raw air, reduces the content of airborne water and other magazines.
2, nitrogen collector 2, are mainly used in nitrogen gas generator 1 and produce and rear nitrogen is carried out to centralized collection, and the nitrogen that nitrogen gas generator 1 produces, through collecting, is gone out with stable earth pressure release.Nitrogen collector 2 also can be selected certain pressure and guarantee safety.
3, pressurizing air press 3, for ease of the storage of inert gas, need to use pressurizing air press 3 to carry out supercharging operation.
4, the number of nitrogen storage gas cylinder 4 will be considered need of work, and nitrogen storage gas cylinder 4 need to be placed on the safer region of boats and ships.The pressure store of nitrogen storage gas cylinder 4 also will be chosen according to using priciple.Generally be placed on gas cylinder carriage fixing can be safer, on nitrogen storage gas cylinder 4, generally need to have pressure-control valve and isolating valve.
5, pressure-reducing valve group control station 5, because nitrogen pressure in nitrogen storage gas cylinder 4 is larger, can not be directly released in cabin, therefore need to pressure-reducing valve group control station 5 be set at transfer pipeline 6 ends.The effect of pressure-reducing valve group control station 5 is mainly three aspects:, the one, and the pressure that reduces inert gas injects being suitable in cabin.The 2nd, control the position that inert gas is carried.The 3rd, can detect respectively oxygen concentration contained in inert gas.
Sea work ship low-flash system inert gas protection device operation logic is as follows:
1, the work air compressor machine 9 carrying by boats and ships is carried the raw air of reliable in quality to nitrogen gas generator 1.
2, nitrogen gas generator 1 starts nitrogen operation processed, and is transported to nitrogen collector 2 by transfer pipeline 6.
3, the nitrogen in nitrogen collector 2 is by 3 superchargings of pressurizing air press, and the transfer pipeline 6 by reliable in quality is stored in nitrogen storage gas cylinder 4 so that standby.
4, by the transfer pipeline 6 of reliable in quality, inert gas is transported to pressure-reducing valve group control station 5.
5,, according to different carrying requirements, the decompression by pressure-reducing valve group control station 5 and the switching of controlling each valve are carried out deactivation protection to low-flash material.
6, after delivery finishes, close corresponding valve.
7, nitrogen gas generator 1 is according to the corresponding unlatching of feedback information of nitrogen collector 2, nitrogen storage gas cylinder 4 and close.
At cofferdam 7 and low-flash cabin 8 is interior can weld the connecting line may with what reduce Leakage Gas with TIG.
The sea work ship low-flash system main operational phase of inert gas protection device:
1, before loading, low-flash cabin 8 should be full of inert gas, and in loading process, inert gas protection device does not move.
Deactivation when 2, low-flash material loads unloading.During unloading, goods pump is extracted low-flash material out, inert gas protection device should to begin to whole to low-flash cabin 8 and transfer pipeline 6 be input into the inert gas with unloaded low-flash material same volume.After having unloaded, should guarantee that there is the malleation of 981Pa in low-flash cabin 8, to prevent ozone intrusion low-flash cabin 8.Now, inert gas protection device also needs to continue operation.
When 3, boats and ships delivery low-flash material navigates by water transportation, need deactivation.
4, deactivation during washing of tanks.During washing of tanks, need to protect with inert gas, otherwise have the danger of blasting.When washing of tanks, as use fixedly tank washing machine because the pressure in cabin changes greatly, to need continuously the pressure in monitoring inert gas tube, note superpressure and negative pressure condition.
5, with inert gas, remove cabin gas.As being full of ozone in low-flash cabin 8, need to use inert gas protection device to inert gas injecting in empty cabin to get rid of fresh air, make low-flash cabin 8 in inert condition.
Sea work ship low-flash system inert gas protection device Installation Considerations:
1, guarantee the height of low-flash cabin 8 ventilation heads, to prevent that nitrogen is leaked to harm safety of crew's place.
Safety while 2, guaranteeing that crewman measures inert gas.Because crewman need to measure flue gas concentration, if breathed inert gas, will feel laryngalgia, the time is long can shedding tears by binocular slightly.For these reasons, suggestion crewman wears respirator when measuring low-flash cabin 8 oxygen content.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but do any variation in its shape or structure; every have identical with a application or akin technical scheme, within all dropping on protection scope of the present invention.
Claims (4)
1. an extra large work ship low-flash system inert gas protection device; comprise nitrogen gas generator (1), nitrogen collector (2); it is characterized in that: described nitrogen gas generator (1) is connected with nitrogen collector (2) by transfer pipeline (6); described nitrogen collector (2) is connected with pressurizing air press (3) by transfer pipeline (6); described pressurizing air press (3) is by transfer pipeline (6) if be connected with each and every one nitrogen storage gas cylinder (4) respectively, and described nitrogen storage gas cylinder (4) is all connected with pressure-reducing valve group control station (5) by transfer pipeline (6).
2. a kind of extra large work ship low-flash system inert gas protection device according to claim 1, is characterized in that: on described nitrogen storage gas cylinder (4), be equipped with pressure-control valve.
3. a kind of extra large work ship low-flash system inert gas protection device according to claim 2, is characterized in that: on described nitrogen storage gas cylinder (4), be equipped with isolating valve.
4. a kind of extra large work ship low-flash system inert gas protection device according to claim 3, is characterized in that: pressure-reducing valve group control station (5) is arranged on transfer pipeline (6) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733832.XA CN103691079A (en) | 2013-12-26 | 2013-12-26 | Inert gas protection device for low-flash-point system of marine ship |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310733832.XA CN103691079A (en) | 2013-12-26 | 2013-12-26 | Inert gas protection device for low-flash-point system of marine ship |
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| CN103691079A true CN103691079A (en) | 2014-04-02 |
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| CN201310733832.XA Pending CN103691079A (en) | 2013-12-26 | 2013-12-26 | Inert gas protection device for low-flash-point system of marine ship |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109011264A (en) * | 2018-06-07 | 2018-12-18 | 广州航海学院 | A kind of fire prevention cool-down method of miniature self-service cabin body |
| CN111854454A (en) * | 2020-07-31 | 2020-10-30 | 江苏热盾节能环保科技有限公司 | Nitrogen protection explosion-proof device and method for converter flue gas waste heat boiler |
| CN113586126A (en) * | 2021-09-14 | 2021-11-02 | 南京双京电博特种机器人产业研究院有限公司 | Nitrogen-filled positive pressure explosion-proof system of underground wireless charging safety house and working method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109011264A (en) * | 2018-06-07 | 2018-12-18 | 广州航海学院 | A kind of fire prevention cool-down method of miniature self-service cabin body |
| CN111854454A (en) * | 2020-07-31 | 2020-10-30 | 江苏热盾节能环保科技有限公司 | Nitrogen protection explosion-proof device and method for converter flue gas waste heat boiler |
| CN111854454B (en) * | 2020-07-31 | 2021-12-17 | 江苏热盾节能环保科技有限公司 | Nitrogen protection explosion-proof device and method for converter flue gas waste heat boiler |
| CN113586126A (en) * | 2021-09-14 | 2021-11-02 | 南京双京电博特种机器人产业研究院有限公司 | Nitrogen-filled positive pressure explosion-proof system of underground wireless charging safety house and working method thereof |
| CN113586126B (en) * | 2021-09-14 | 2024-03-15 | 南京双京电博特种机器人产业研究院有限公司 | Nitrogen-filled positive-pressure explosion-proof system of underground wireless charging safety house and working method thereof |
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Application publication date: 20140402 |
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