WO2003016178A1 - Reservoir de stockage de petrole dote d'une couverture flottante de type lit flottant - Google Patents

Reservoir de stockage de petrole dote d'une couverture flottante de type lit flottant Download PDF

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Publication number
WO2003016178A1
WO2003016178A1 PCT/CN2002/000542 CN0200542W WO03016178A1 WO 2003016178 A1 WO2003016178 A1 WO 2003016178A1 CN 0200542 W CN0200542 W CN 0200542W WO 03016178 A1 WO03016178 A1 WO 03016178A1
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WO
WIPO (PCT)
Prior art keywords
floating roof
oil storage
storage tank
floating
tank
Prior art date
Application number
PCT/CN2002/000542
Other languages
English (en)
French (fr)
Inventor
Zhenqi Song
Original Assignee
Zhenqi Song
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhenqi Song filed Critical Zhenqi Song
Priority to US10/485,120 priority Critical patent/US7225942B2/en
Publication of WO2003016178A1 publication Critical patent/WO2003016178A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/34—Large containers having floating covers, e.g. floating roofs or blankets
    • B65D88/42—Large containers having floating covers, e.g. floating roofs or blankets with sealing means between cover rim and receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/34—Large containers having floating covers, e.g. floating roofs or blankets

Definitions

  • Oil storage tank equipped with floating bed type internal floating roof device equipped with floating bed type internal floating roof device
  • the invention relates to an oil storage tank equipped with a floating bed-type internal floating roof device, and belongs to the technical field of petrochemical equipment. Background technique
  • the known floating roofs of oil storage tanks such as the structures disclosed in Chinese utility model patents ZL93217054.4 and ZL97239243.2, are made of steel or aluminum plates into I-shaped or circular members, and bolts or aluminum rivets are used. It is connected to form a net structure of a scaffold, and a foam plastic float or an aluminum alloy extruded seamless float is fixed on the scaffold structure, and then a steel plate or an aluminum plate is covered on the scaffold as a cover. Seal with tongue or small corrugated multi-lip sealing tape. Use metal wire to connect the inner floating roof and the top of the oil tank to discharge static electricity.
  • the disadvantages are the complicated structure and the large amount of assembly work at the site; the dead weight is heavy, usually its buoyancy is only 2-3 times the dead weight of the internal floating roof device, and the buoyancy distribution is not balanced, so there is the possibility of overturning accidents;
  • the floating roof device is an integral metal connection structure, so there is a possibility of electrostatic hazard.
  • the thickness of the internal floating roof device is large, usually between 100 mm and 400 mm, which increases the effective volume that is not available for the oil storage tank.
  • the purpose of the present invention is to design an oil storage tank equipped with a floating bed type inner floating roof device, change the structure of the prior art, and make the inner floating roof body use less metal components, so as to reduce the weight of the floating roof device and increase buoyancy. To eliminate the danger of overturning accidents and the harm of static electricity, and reduce the effective volume of the unusable oil storage tank caused by the space occupied by the inner floating roof.
  • An oil storage tank equipped with a floating bed-type internal floating roof device includes a tank body and an internal floating roof device.
  • the internal floating roof device is placed on the liquid surface inside the tank body.
  • the internal floating roof device includes a filling bag and an elastic seal.
  • the tube and the filling bag are filled with floating plates, and the floating plates are separated by a separating bar.
  • An elastic sealing tube surrounds the filling bag and comes into tight contact with the inner wall of the tank.
  • the filling bags in the oil storage tank are assembled with each other by a plurality of filling bags through a connecting member and a fixing member to form a flat plate having the same internal cross-sectional shape as the tank body.
  • the oil storage tank designed by the present invention further includes an inner floating roof fixing bracket, which is placed at the bottom of the tank body.
  • the inner floating roof fixing bracket includes a bracket, a triangular pyramid bracket, and a leg.
  • the frame consists of a ring and a cross grid.
  • the cross grid is placed in the ring.
  • the diameter of the ring is smaller than the inner diameter of the tank.
  • the bottom surface of the triangular pyramid support is placed on the bracket.
  • One end of the leg is fixed at the node of the grid. on.
  • the oil storage tank with a floating bed-type internal floating roof device designed by the present invention has the following advantages: First, the structure is simple.
  • the filling bag When installed on site, if the filling bag is a flat whole with the same internal cross-sectional shape as the oil storage tank, only Insert the floating boards one by one into the pre-made filling pockets, seal them, and then assemble the elastic sealing tube with the side of the filling bag to complete the installation work; if it is not a whole, just connect and fix each supporting floating board filling bag with a connector and fix it
  • the pieces are spliced into a flat whole with the same internal cross-sectional shape of the oil storage tank, and then the elastic sealing tube can be assembled with the side of the filling bag; the second is because the amount of metal parts on the inner floating roof body is small, the weight is light, and the inner floating
  • the buoyancy generated by the roof is 6-12 times the self-weight of the inner floating roof body, and the buoyancy generated by the floating plate is evenly distributed along the entire liquid level in the tank, so there is no danger of overturning accidents.
  • the materials used in the inner floating roof body are mainly It is an oil-resistant rubber cloth that is an electrical insulator, so there is no danger of static electricity.
  • the thickness of the inner floating roof device is small, so the available storage tank has a large effective volume.
  • FIG. 1 is a schematic structural diagram of a floating bed-type internal floating roof device for an oil storage tank designed by this patent.
  • FIG. 2 is a top view of the inner floating roof body in FIG. 1.
  • FIG. 3 is a top view of the floating-plate filling bag member in FIG. 2.
  • FIG. 4 is an enlarged schematic view of a cross-sectional structure of the liquid-filled elastic sealing tube in FIG. 2.
  • FIG. 5 is a top view of the inner floating roof fixing bracket in FIG. 1.
  • 'Fig. 6 is an enlarged schematic view of the A-A cross-sectional structure in Fig. 2.
  • Fig. 7 is an enlarged schematic view of a B-B cross-sectional structure in Fig. 2.
  • the structure of the oil storage tank equipped with a floating bed-type internal floating roof device is shown in FIG. 1 and FIG. on.
  • the inner floating roof device includes a filling bag 1 and an elastic sealing tube 4.
  • the filling bag is filled with a floating plate 2, and the floating plates are separated by a separation bar 3.
  • Liquid-filled elastic sealing tube 4 It is fixed to the periphery of the assembled filling bag 1.
  • the liquid-filled elastic sealing tube 4 is filled with the same liquid oil as the medium in the tank.
  • the liquid-filled elastic sealing tube 4 and the inner wall of the tank body 7 are brought into close contact due to over-dimensioning, so as to isolate the communication channel between the medium in the tank and the air.
  • the structure of the filling bag 1 in the above oil storage tank is shown in FIG. 3, and a plurality of filling bags can be assembled with each other through the connecting member 5 and the fixing member 6.
  • the oil storage tank designed by the present invention further includes an inner floating roof fixing bracket.
  • the inner floating roof fixing bracket is placed at the bottom of the tank body 7.
  • the inner floating roof fixing bracket includes a bracket 8, Triangular pyramid support 10 and legs 9, bracket 8 is composed of a ring and a cross grid, the cross grid is placed in the ring, the diameter of the ring is smaller than the inner diameter of the tank, and the bottom surface of the triangular pyramid support is placed on the bracket , One end of the outrigger is fixed to the node of the grid.
  • the filling bag 1 in the oil storage tank designed according to the present invention can be prefabricated by using a whole circle, a semicircle, and other divided arrangements according to the internal cross-sectional shape and size of the oil storage tank, and the thickness is the same everywhere.
  • a plurality of parallel floating board filling pockets are arranged thereon, each pocket has only one end open, and each pocket is isolated from each other by a fixed isolation bar 3, which is strictly sealed.
  • the floating plate 2 is cut according to the shape of the end of each pocket, and is loaded into the filling bag 1, and the adhesive 14 is evenly coated on the inside of the port cloth grown by the filling bag to seal. After sealing, each floating board pocket is kept tightly sealed from the outside and each other. The outside air and oil medium cannot enter the pocket.
  • the thickness of the floating plate 2 is the same everywhere, and the material of the floating plate 2 is selected from products with higher density and strength, so that it has the ability to maintain the overall shape of the designed floating bed type internal floating roof device.
  • the filling bag is assembled into a flat plate having the same internal cross-sectional shape as the tank body 7, and the interior is filled with a floating plate 2. If the filling bag 1 is not a whole with the same internal cross-sectional shape of the oil storage tank, several pieces of filling bags need to be assembled into A whole.
  • Fig. 7 is an enlarged schematic cross-sectional view of a two-piece filling bag at a splicing position.
  • the specific method is: Fold up the seals of the filling bag 1 into multiple layers, and press together the folded seals of another floating board filling bag 'which is assembled correspondingly, and fix them with clamps 5 from both sides. Then, it is connected with the fixing member 6 to ensure the tight and reliable assembly and connection between each floating board pocket.
  • the elastic sealing tube 4 is fixed to the periphery of the assembled filling bag 1 with an oil-resistant rubber cloth 12 as shown in FIGS. 4 and 6.
  • an oil-resistant rubber tube with good elasticity is used as the elastic sealing tube.
  • An oil-resistant rubber cloth 12 is bonded and fixed with an adhesive 14 on the outer half of the circumferential surface, and a length of overlap joint is reserved at each end of the cloth strip, which is used to connect the elastic sealing tube 4 and the filling bag 1
  • the lap joints become a whole companion.
  • a wear-resistant elastic rubber sheet 13 is bonded with an adhesive 14 along a half of the circumferential surface to prevent the elastic sealing tube 11 from being broken due to long-term wear.
  • the elastic sealing tube 4 is filled with the same liquid as the medium in the tank, and the elastic sealing tube 4 is in tight contact with the inner wall of the tank body 7 to achieve sealing. In this way, a complete floating bed inner floating roof device that can cover the entire liquid level in the oil storage tank is assembled, which can prevent The light components in the stored oil are volatilized towards the upper part of the liquid surface.
  • FIG. 6 is an enlarged schematic sectional view of a spliced cross section of the liquid-filled elastic sealing tube 4 and the floating board filling bag 1.
  • the prefabricated liquid-filled elastic sealing tube 4 is adhered and fixed along the outer edge of the floating plate filling bag 1 with an adhesive 14, and then the elastic sealing tube 4 is filled with the same liquid as the medium in the tank, that is, Oil products.
  • the diameter of the elastic sealing tube 4 is slightly larger than the thickness of the filling bag 1 during design. A squeeze force is maintained between the tube 4 and the inner wall of the tank body 7 so as to achieve a seal with the tank body 7.
  • FIG. 5 The structure of the fixing bracket 8 of the inner floating roof device in the oil storage tank designed according to the present invention is shown in FIG. 5.
  • the inner floating roof fixing bracket 8, the fixing bracket legs 9 and the triangular pyramid bracket 10 are all made of aluminum. Made of profiles and placed on the bottom of the tank.
  • the triangular pyramid bracket 10 is not installed at first. After the assembly of the inner floating roof device is completed, the elastic sealing tube 4 is filled with liquid and sealed. Install the triangular pyramid support 10.
  • the inner floating roof fixing bracket 8 has two functions: one is to provide a flat installation platform for the inner floating roof device; the other is to support the inner floating roof device when the liquid level is lower than the height of the bracket, so that Falling affects the normal operation of other components in the tank.
  • the role of the triangular pyramid bracket 10 is: when the liquid level in the tank is lower than the height of the bracket, before the inner floating roof falls on the inner floating roof fixing bracket S, the triangular pyramid bracket 10 installed on the side of the fixing bracket 8 first It comes into contact with the inner floating roof, and lifts up the edges of the inner floating roof to make it detach from close contact with parts of the tank body 7 so as to form vertical communication, thereby preventing the lower part of the inner floating roof device from being pumped to negative pressure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)

Description

装有浮床式内浮顶装置的储油罐 技术领域
本发明涉及一种装有浮床式内浮顶装置的储油罐， 属于石油化工设备技术领域。 背景技术
目前， 公知的储油罐内浮顶， 如中国的实用新型专利 ZL93217054.4 和 ZL97239243.2中公开的结构， 均采用钢板或铝板加工成工字形或圆形构件， 用螺栓 或是铝铆钉将其连接成衍架网状结构， 在衍架结构上固定外包金属层的泡沫塑料浮 子或是铝合金挤压的无缝浮筒， 再在衍架上方覆盖钢板或是铝板做为盖板， 边部用 舌形或是小波紋多唇形密封带密封， 用金属导线连接内浮顶与储油罐顶部以导出静 电。 其不足是结构复杂， 现场组装工作量大； 自重较重， 通常其浮力仅为与内浮顶 装置自重的 2—— 3倍， 且浮力分布不够均衡， 故存在发生倾覆事故的可能性； 内浮 顶装置为一整体金属连接结构， 故存在发生静电危害的可能性； 内浮顶装置的厚度 大， 通常在 100 mm至 400 mm之间， 增加了储油罐不可利用的有效容积。 发明内容
本发明的目的是设计一种装有浮床式内浮顶装置的储油罐， 改变已有技术的结 构， 使内浮顶本体较少采用金属组件， 以减少浮顶装置的自重， 增大浮力， 消除发 生倾覆事故的危险和静电的危害， 减少因内浮顶占用空间而引起的不可利用的储油 罐有效容积。
本发明设计的装有浮床式内浮顶装置的储油罐， 包括罐体和内浮顶装置， 内浮 顶装置置于罐体内部的液面上， 内浮顶装置包括装填袋和弹性密封管， 装填袋内充 填有浮板， 浮板之间由隔离条相隔。 弹性密封管围在装填袋的周围， 并与罐体内壁 紧密挤压接触。
上述储油罐中的装填袋， 由多个装填袋通过连接件和固定件相互拼装， 成为与 罐体的内截面形状相同的平板。
本发明设计的储油罐， 还包括内浮顶固定托架， 该内浮顶固定托架置于罐体内 部的底部， 内浮顶固定托架包括托架、 三棱锥支架和支腿， 托架由圆环和十字网格 组成， 十字网格置于圆环内， 圆环的直径小于罐体内径， 三棱锥支架的底面置于托 架上， 支腿的一端固定在网格的结点上。 本发明设计的带有浮床式内浮顶装置的储油罐， 具有以下优点： 一是结构简单， 在现场安装时， 如果装填袋是一个与储油罐内截面形状相同的平面整体， 仅需将浮 板逐条插入预制的装填口袋后封口， 再将弹性密封管与装填袋的边部装配， 即可完 成安装工作； 如果不是一个整体， 只要将各个配套的浮板装填袋用连接件和固定件 拼接为一个与储油罐内截面形状相同的平面整体， 再将弹性密封管与装填袋的边部 装配即可； 二是由于内浮顶本体上金属件用量少， 自重轻， 内浮顶产生的浮力是内 浮顶本体的自重的 6— 12倍，而且浮板产生的浮力沿整个罐内液面均布,故没有发生倾 覆事故的危险； 三是由于内浮顶本体所用材料主要为电绝缘体的耐油橡胶布， 故不 存在静电危害； 四是内浮顶装置本体的厚度小， 故可以利用的储油罐有效容积大。 附图说明
图 1是本专利设计的储油罐用浮床式内浮顶装置的结构示意图。
图 2是图 1中的内浮顶本体的俯视图。
图 3是图 2中浮板装填袋构件的俯视图。
图 4是图 2中边部充液弹性密封管的剖面结构放大示意图。
图 5是图 1中内浮顶固定托架的俯视图。 ' 图 6是图 2中 A-A剖面结构放大示意图。
图 7是图 2中 B-B剖面结构放大示意图。
图 1一图 7中， 1是装填袋， 可用耐油橡胶布制成； 2是充填在装填袋中的浮板， 可用聚苯乙烯泡沬塑料制成； 3是装填袋中的隔离条， 可用耐油橡胶布制成； 4是充 液弹性密封管， 可用弹性良好的耐油橡胶件制成； 5是拼接浮板装填袋构件用的连接 件， 可选用角铝型材； 6是连接连接件用的固定件， 可选用铆钉或者螺栓； 7是储油 罐罐体； 8是内浮顶固定托架， 可用铝型材 ^成； 9固定托架支腿； 10是三棱锥支架， 可用铝型材制成； 11是耐油橡胶件管； 12是连接用的耐油橡胶布； 13是耐磨的耐油 橡胶片； 14是粘结剂。 具体实施方式
本发明设计的装有浮床式内浮顶装置的储油罐,其结构如图 1和图 2所示,包括罐 体 7和内浮顶装置，内浮顶装置置于罐体内部的液面上。 内浮顶装置包括装填袋 1和 弹性密封管 4， 装填袋内充填有浮板 2，浮板之间由隔离条 3相隔。 充液弹性密封管 4 固定在拼装后的装填袋 1的周边。 充液弹性密封管 4内充填与罐内介质相同的液体 油 品。 充液弹性密封管 4与罐体 7的内壁靠尺寸过盈造成紧密接触， 从而实现隔绝罐内 介质与空气的连通通道。
上述储油罐中的装填袋 1， 其结构如图 3所示， 可由多个装填袋通过连接件 5和 固定件 6相互拼装而成。
本发明设计的储油罐， 还包括内浮顶固定托架， 如图 1所示， 该内浮顶固定托架 置于罐体 7内部的底部， 内浮顶固定托架包括托架 8、 三棱锥支架 10和支腿 9， .托架 8 由圆环和十字网格组成， 十字网格置于圆环内， 圆环的直径小于罐体内径， 三棱锥支 架的底面置于托架上， 支腿的一端固定在网格的结点上。
如图 3所示， 本发明设计的储油罐中的装填袋 1， 可根据储油罐内截面形状及尺寸 不同而采用整园、 半圆及其它分割布置方式预制， 各处厚度相同。 其上布置多条平行 的浮板装填口袋， 每个口袋只留一端开口， 各口袋之间用固定的隔离条 3相互隔离， 严格密闭。 浮板 2按各条口袋端部的形状下料， 将其装入装填袋 1后， 在装填袋长出 的端口布的内侧均匀地涂敷粘结剂 14， 进行封口。 封口后各条浮板口袋均保持与外界 及其相互之间的严格密闭， 外面的空气和油品介质不能进入口袋内。 浮板 2的厚度各 处相同， 其材质选用密度和强度较大的产品， 使其具有能够保持所设计的浮床式内浮 顶装置的整体形状的能力。 装填袋拼装成与罐体 7的内截面形状相同的平板， 其内部 充填有浮板 2， 如果装填袋 1不是一个与储油罐内截面形状相同的整体， 则需将数块装 填袋拼装成一个整体。 图 7所示为两件装填袋在拼接处的剖面放大示意图。 具体做法 是： 将装填袋 1 的长出的封口向上折叠成多层， 与相应配套拼装的另一块浮板装填袋' 的折叠后的封口压在一起， 分别用连接件 5从两边固定夹紧， 再用固定件 6将其连接， 以确保各浮板口袋间拼装连接的严密、 可靠。 ― ' ·
弹性密封管 4用耐油橡胶布 12固定在拼装后的的装填袋 1的周边， 如图 4和图 6 所示， 制作时先选用弹性良好的耐油橡胶管作为弹性密封管， 在耐油橡胶管 4外侧的 半个圆周面上用粘结剂 14粘结固定耐油橡胶布 12, 在布条的两端各预留出一段长出的 搭接接头， 用于将弹性密封管 4与装填袋 1 的边部搭接连结成为一个整伴。 在弹性密 封管 4与罐体 7的内壁相接触的部位， 沿着半个圆周面用粘结剂 14粘结一条耐磨的弹 性橡胶片 13， 以防止因长期磨损而使弹性密封管 11破裂失效。 弹性密封管 4内充填与 -罐内介质相同的液体， 弹性密封管 4与罐体 7的内壁紧密挤压接触以实现密封。 这样， —个可以覆盖整个储油罐内液面的完整的浮床式内浮顶装置就组装完成， 它可以阻止 所储存油品中的轻质组分往液面上部挥发。
图 6所示为充液弹性密封管 4与浮板装填袋 1的拼接剖面放大示意图。 将预制好 的充液弹性密封管 4沿浮板装填袋 1的外圈边部用粘结剂 14粘结固定一圈， 再往弹性 密封管 4内灌满与罐内介质相同的液体， 即油品。 设计时通常使弹性密封管 4的直径 略大于装填袋 1 的厚度， 拼装好的内浮顶装置的外径大于罐体 7的内径， 大于量约为 弹性密封管的直径， 以 证在弹性密封管 4与罐体 7的内壁之间保持一个挤压力， 从 而实现与罐体 7之间的密封。
' 本发明设计的储油罐中的内浮顶装置的固定托架 8的结构如图 5所示， 内浮顶固 定托架 8、 固定托架支腿 9和三棱锥支架 10均釆用铝型材制成， 放置在罐内底部。 在 内浮顶固定托架 8上拼装内浮顶本体时， 先不安装三棱锥支架 10， 在完成内浮顶装置 的拼装后， 即已经往弹性密封管 4内充填满液体并封口后， 再安装三棱锥支架 10。 内^ 浮顶固定托架 8 的作用有两个： 一是提供一个平整的内浮顶装置的安装平台； 二是当 液位低于托架高度时承托内浮顶装置， 使其不至于落下而影响罐内其它构件的正常工 作。 三棱锥支架 10的作用是： 当罐内液位低于托架高度时， 内浮顶在落到内浮顶固定 托架 S之前， 安装在固定托架 8的边部的三棱锥支架 10先与内浮顶接触， 并将内浮顶 的边部顶起， 使其脱离与罐体 7的局部之间紧密接触， 形成上下连通， 从而防止内浮 顶装置下部被抽为负压。

Claims

权利要求
1、 一种装有浮床式内浮顶装置的储油罐， 其特征在于该储油罐包括罐体和内浮顶 装置， 内浮顶装置置于罐体内部的液面上； 所述的内浮顶装置包括装填袋和弹性密封 管， 装填袋内充填有浮板，' 浮板之间由隔离条相隔， 弹性密封管围在装填袋的周围， 并与罐体内壁紧密挤压接触。
2、 如权利要求 1所述的储油罐， 其特征在于其中所述的装填袋由多个装填袋通过 连接件和固定件相互拼装， 成为与罐体的内截面形状相同的平板。
3、 如权利要求 1所述的储油罐， 其特征在于还包括内浮顶固定托架， 该内浮顶固 定托架置于罐体内部的底部， 内浮顶固定托架包括托架、 三棱锥支架和支腿， 托架由 圆环和十字网格组成， 十字网格置于圆环内， 圆环的直径小于罐体内径， 三棱锥支架 的底面置于托架上， 支腿的一端固定在网格的结点上。
PCT/CN2002/000542 2001-08-06 2002-08-06 Reservoir de stockage de petrole dote d'une couverture flottante de type lit flottant WO2003016178A1 (fr)

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