30立方液态二氧化碳储罐 曲靖二氧化碳储罐
价格:100000.00起
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关 键 词:30立方液态二氧化碳储罐
行 业:能源 石油燃料 液化石油气
发布时间:2021-09-13
大型lng储罐的分析
而钢质储罐特别是大型lng储罐的完整性打点概念和相应办法尚处于探讨阶段。从对管道的完整性打点进行解构开始,经过进程探寻其概念发祥、技能体系与打点体系的核心,深入阐发了管道完整性打点的本质。,从LNG储罐的底子特征出发并按照相的案例,我们现在开始测验建立lng储罐完整性打点概念,提出其紧张体系框架,结合一般钢质储罐的风险评价办法及国外对LNG储罐生命周期与老化的新研究成果,提出LNG储罐的完整性评价办法,从而为我国LNG行业建立完整性打点体系供应积借鉴,同时丰富完整性打点的内涵。大型lng储罐的分析
常见故障的处理 Common fault handling
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1.内罐压力异常长高 Inner tank pressure abnormally high
1.1可能是V3回气阀开度过大或阀门失灵,应减小阀门开度或检修阀门。
May be V3 return valve opening is too large or valve failure, should reduce the valve opening or valve repair.
1.2可能是S1、S2安全阀失灵,到启动压力不启动,应检查安全阀。
may be S1, S2 safety valve failure, to start the pressure does not start, check the safety valve.
1.3可能是压力表指示不准确,应校验压力表。
may be pressure gauge indicates inaccurate, should verify the pressure gauge.
2.液位计指示不真实 Level gauge instructions are not true
2.1可能是液位计失灵,应检修液位计。
may be the level gauge failure, should be maintenance level gauge
2.2可能是液位计接头处泄漏,应检修接头连接处,排除泄漏。
It may be a leak at the head of the liquid level gauge. It should repair the connection of the joint and eliminate the leakage
3.蒸发率高,外壳体凝水结霜 High evaporation rate, the outer condensate frost
3.1可能是珠光砂未填实或下沉,应补充珠光砂,重新抽真空。
may be unfilled or sinking of pearl sand, pearl sand should be added and re-evacuated.
3.2可能是真空度恶化,应进行真空检漏,重新抽真空。
may be a deterioration of the vacuum, vacuum leak detection should be carried out, re-vacuum.
4.管道阀门液体流动不畅或堵塞 pipeline valve fluid flow or blocked
可能是液体二氧化碳形成干冰的原因造成,应停止使用,用热空气加温管阀至畅通为止。May be caused by the formation of dry ice, should stop using, with hot air heating pipe valve until smooth.
2 储罐的操作Tank operation
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储罐的操作分为充液、贮存、增压、排液等过程,每个过程必须做到:V6三通截止阀(连接安全阀)和V8液位计组合阀始终处于全开状态。罐内压力不应高于2.16Mpa,压力不应低于0.8Mpa .
The operation of the tank is divided into filling, storage, pressurization, drainage and other processes, each process must be: V6 three-way valve (connecting safety valve) and V8 level gauge combination valve is always in the fully open state. Tank maximum pressure should not exceed 2.16Mpa, the minimum pressure should not be less than 0.8Mpa.
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【主变量】【变量3】【变量2】【变量1】
储罐的增压 Tank pressurization
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当储罐向外供液又需要稳定排液压力时,可利用汽化器(另外配备)进行增压。其操作过程如下:
The carburetor (available separately) can be used for boosting when the reservoir is supplied externally and requires stable discharge pressure. The operation is as follows:
2.3.1开启V2排液阀,使液体二氧化碳汽化器汽化,开启V3回气阀(根据用户回气管路的设置,V3回气阀可置于常开状态)从汽化器分流出来的气体返回储罐上部,使储罐内增压。
Open the V2 drain valve to vaporize the liquid carbon dioxide vaporizer and open the V3 return valve (the V3 return valve can be normally open depending on the return air line of the user). The gas diverted from the vaporizer returns to the upper part of the tank , So that the pressure tank.
2.3.2当储罐内压力达到2.1Mpa时,可暂时关闭V3回气阀。
When the tank pressure reaches 2.1Mpa, the valve can be temporarily closed V3 return gas valve.
2.3.3排液过程中,可通过控制V3回气阀的开度,使增压能力维持在压力稳定的水平。
During drainage, the degree of pressurization can be maintained at a pressure-stable level by controlling the opening of the V3 return valve.
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维护与检修 Maintenance and repair
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1.储罐的使用与维护,应按“压力容器安全技术监察规程”要求和本说明进行。
The use and maintenance of the storage tank shall be carried out according to the requirements of the Pressure Vessel Safety Technical Supervision Regulations and these instructions
2.日常检查与维护 Daily inspection and maintenance
储罐在运行过程中,要经常检查安全阀、压力表、液位计工作是否正常,阀门管路是否有泄漏,外部有无异常现象,发现问题及时处理。
During operation of the tank, check the safety valve, pressure gauge and liquid level meter regularly, whether the valve line is leaking, whether there is any abnormal phenomenon outside, and find the problem to be handled in time.
3.定期校验 Regular verification
3.1安全阀整定压力不大于2.27Mpa,每年至少校验一次,并加铅封,作好记录。
Safety valve setting pressure is not more than 2.27Mpa, at least once a year, and add seals, make a record.
3.2定期检查夹层真空度,未装低温介质的情况下真空度应低于65Pa,装有低温介质的情况下,真空度应低于10Pa为合格。
Regularly check the sandwich vacuum, the vacuum should be less then 65Pa without vacuum medium; with a low temperature medium, the vacuum should be less than 10Pa for the pass.
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【标题】
基础形式
低温储罐本身的设计定义并无统一的标准。相对英国在这方面的技术标准比较系统全面。其标准《平底立式圆筒形低温储罐应用》根据不同的工艺要求和介质储存方式,将低温罐定义为单容器罐、双容器罐和全容器罐等三种罐体形式。单容器罐一般是有一个钢制内罐加上保温外壳组成,而双容器罐和全容器罐则是由一个钢制内罐和一个钢制或采用混凝土(一般为预应力混凝土)制成的外罐组成,保温设在内外罐壁之间,目前较多采用的是双容罐形式。
在进行低温罐设计时,由于罐内低温介质的传导作用,使得地基土易产生冻涨并使土体隆起,进而造成基础破坏,因此为消除这一不利因素,除了在罐底板与基础底板表面之间设置保温措施外,还必须对罐基础采取防冻措施,通常的做法有两种,一是在基础底板内采用电或其他加热系统,即做成带有循环加热系统的筏板式基础,另一种是采用将基础底板架空,通过架空形成的空气层将基础底板与地基土分隔开。前者因加热系统成本较高,一般不常采用。在国内引进建造的大多数低温罐中,普遍采用了架空筏板式基础形式。架空层的净高,一般除根据工艺管道和设备布置要求确定外,尚需根据罐内储存介质温度的高低进行一定的温度传导计算后来确定。架空筏板式基础又可分为单筏板(承台)和双筏板(承台)架空两种形式,在地质条件较好的情况下,一般可采用双筏板基础形式;但由于低温储罐对基础沉降的要求相对较高,在大多数情况下,特别时地质条件较差的软土地基上,则多采用单筏板(承台)桩基,有时也有采用双筏板(承台)桩基。