WO1990008076A1 - Systeme d'etanchement de paroi de reservoir mobile - Google Patents

Systeme d'etanchement de paroi de reservoir mobile Download PDF

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Publication number
WO1990008076A1
WO1990008076A1 PCT/NL1990/000007 NL9000007W WO9008076A1 WO 1990008076 A1 WO1990008076 A1 WO 1990008076A1 NL 9000007 W NL9000007 W NL 9000007W WO 9008076 A1 WO9008076 A1 WO 9008076A1
Authority
WO
WIPO (PCT)
Prior art keywords
tank
spring
tank wall
sealing
profile
Prior art date
Application number
PCT/NL1990/000007
Other languages
English (en)
Inventor
Piet Hugo Alphonsus Van Der Kuil
Alexander Faber
Original Assignee
Kuil Piet Hugo Alphonsus V D
Alexander Faber
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 Kuil Piet Hugo Alphonsus V D, Alexander Faber filed Critical Kuil Piet Hugo Alphonsus V D
Priority to KR1019900702028A priority Critical patent/KR910700184A/ko
Publication of WO1990008076A1 publication Critical patent/WO1990008076A1/fr
Priority to FI904511A priority patent/FI904511A0/fi
Priority to NO90904032A priority patent/NO904032L/no

Links

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
    • B65D88/46—Large containers having floating covers, e.g. floating roofs or blankets with sealing means between cover rim and receptacle with mechanical means acting on the seal

Definitions

  • the invention relates to a mobile tank sealing system between the immobi upright tank wall and a floating tank roof which floats upon the liquid within t circumference of the tank wall in a vertical direction, also including an annul collar, known per se, of flexible cloth material, the inner circumferential edge bei interconnected to the outer circumference at the upper side of the tank roof a of which the outer circumferential edge is located at a higher level or not near t tank wall.
  • a tank sealing system provided with a double sealing consisting of first endless hollow sealing body, containing a liquid, which is provided around t circumference of the floating tank roof and a second annular sealing skirt whic is provided between the circumference of the tank wall and the inn circumference of the floating roof structure.
  • this sealing bod itself or a flexible slab between the tank wall and the sealing body scrapes again the tank wall causing considerable damages in the long run, amongst others a result of passing across welding seams
  • the wall of the sealin body is subject to leakages on the long run, which of course strongly affects th effectiveness of the sealing.
  • a second additional sealing e.g. shaped as an upwardl pointing and against the tank wall scraping flexible rain water and sand preventin profile, nevertheless during operation for usually large tank diameters, e.g.
  • the spring system consists of a grea number of oblong springs, these may be leaf springs but more particularly wir springs provide for a still greater freedom of movement in more directions, each outer end of which being tensioned between a point upon the sealing profil that is pressed against the tank wall and another point upon the circumferenti edge of the tank roof.
  • each spring bridges in a radial sense, the direct distance between th circumferential edge of the floating roof and the tank wall and if the entire lengt of each spring being a number of times greater than the slot distance which i bridged, particularly if the total length of the spring amounts at least three to fou times said slot distance.
  • a sprin contains at least one loop shaped winding directing downward from a point at th circumferential edge of the floating roof and than runs nearly parallel in an upwar direction to the tank wall against which it is pressed under force along a relativel greater part of its total spring length.
  • the out circumferential edge of the annular collar may be provided with an endless thickened rim and the sealing profile may be provided with a cavity f accommodating said rim.
  • the sealing profile has a C-shaped cross section may upwardly end into a nose shaped protrusion for carrying away rainwater an the like easily in a downward direction streaming especially if the cavity provide for the thickened rim is situated at a lower level and rainwater may easily pass i way down to the collar.
  • Fig. 1 shows schematically and in a cross sectional view A-A of fig. 3 a fir embodiment of the new sealing system according to the invention between a tan wall and a circumferential edge of a floating roof;
  • Fig. 2 shows the same sealing as shown in fig. 1 in another position, the mutu distance between the tank wall and the circumferential edge of the floating ro being enlarged;
  • Fig. 3 schematically shows a partial view seen from the tank roof in the directio of the upright tank wall
  • Fig. 4 shows a cross sectional view of an endless sealing profile
  • Fig. 5 is a partial cross sectional view A-A of fig. 6 of a tank wall and a tank ro under the application of spring elements and a sealing profile of fig. 4;
  • Fig. 6 is a partial view, seen from the tank roof, of the connections between th sealing profile and the spring elements;
  • Figs. 7 and 8 each show a partial cross sectional view A-A of fig. 9 at differe distances between the tank roof and the tank wall of a double spring structur and a double collar structure;
  • Fig. 9 is a partial view from the tank roof in the direction of the tank wall an shows the double spring structure of the figs. 7 and 8;
  • Figs. 10 and 11 also show in a partially cross sectional view a double sprin structure in use for crude oil storage tanks in which a scraper element i connected to the lowermost wire spring;
  • Fig. 12 shows in front view a bearer element for the sealing profile which i connected to the wire spring and
  • Fig. 13 shows a side view of the final shape of the bearer profile according to fig 12.
  • the sealing system figs. 1 and 2 consists of a endless flexible sealing profile 2, pressed against the tank wall 1, in a cros sectional view being provided with an obliquely upwardly pointing nose whic sealingly presses against the tank wall 1 , a recessed portion 4 lying back from th tank wall 1 and further a convex portion 5, being a single sealing profile maintaining the effective sealing between the tank wall 1 and the circumferentia edge 6 of the floating roof 7, simultaneously applying an annular flexible skirt 8 known per se.
  • This sealing skirt 8 consists e.g.
  • the sealing profile is e.g. shaped from an extruded polymer material.
  • the actua pressure force of the sealing profile 2 against the tank wall 1 is effected by a lon leaf spring 14, the portion 15 thereof lying over a relatively long distance agains the tank wall 1 and at its top portion 16 passing over in a connector 17 to th sealing profile 2.
  • this spring 24 is suchlike th the ends of two adjacent spring elements 24 just overlap, creating also betwee both leaf springs 14 there were the ends do overlap each other, an addition pressure force, particularly if these spring elements 24 are provided with a radiu which is opposite to the tank wall 1 facing them.
  • the cloth material 8 is circumferential sealingly connected to the ta roof 7 by means of a number of flat rings 27, possibly also performable circumferential sectors.
  • the endless sealing profile 102 shaped an oblong tongue is chosen in preference of the firstmentioned convex profile
  • the nose portion 103 of the tongue profile 102 presses against the tank wall 10 see fig. 5, showing a socalled Horton seal 104 provided with the invention.
  • a wire spring element 105 provided with a number wire turns 106 i connected with its lower end 107 to the uppermost portion 108 of the Horton se at the tank wall side 101.
  • the wire spring element 105 i connected to the sealing profile 102 by means of a bolted connection 109 whil using a bearer 110 shown in figs. 12 and 13.
  • the wire spring element 105 has greater freedom of movement than under application of a leaf spring and it ca absorb torsion forces and move within the free central space 111 of the beare
  • figs. 7, 8 and 9 application is made of wire spring element
  • the sealing structure against the tank w 201 is further nearly identical to that in fig. 5, with the difference that the ends the wire spring windings 206 are fixed to the tank roof 207 and thereby creat a perfect seal having a constant permanent pressure force.
  • the second wire spring element 205' is at the one hand with wir windings 206'connected to the tank roof 207, e.g. by means of an identical bo connection 209 and the lower end of the wire spring 205' is connected to secondary sealing body which presses circumferentially all around against the tan wall.
  • the primary seal is provided by the sealing profile 202 in cooperation with the usual collar 208 and downwardly a collar 208' also completes the seal between the tank roof 207 and the tank wall 201 thereby restricting vapour losses and odour leakages respectively to a minimum.
  • the position is shown of the spring elements 205 and 205' in which a relatively long portion of each spring element nearly runs parallelly to the tank wall 201 so maintaining, while using the spring windings 206 and 206', a permanent pressure force.
  • the lower end of the wire spring 205' is connected to a runner 212 sliding up and down along the tank wall 201.
  • a runner structure is shown which does not form part of the invention.
  • a similar double spring structure is shown as in figs. 7 and 8, the lower end of the wire spring element 305' being provided with a scraper 312.
  • This application e.g. is particularly adapted for sealing of crude oil storage tanks enabling the highly viscous oil easily to be scraped from the tank wall.
  • the bearer 110 for the endless sealing profile is shown in developed manner.
  • the rectangular portion 112 has been ultimately bent, se fig. 13, and is provided with an opening 113 to put through a connecting bolt 10 for the connection between the sealing profile 102 and the wire spring 105 havin also sidewise and vertically freedom of movement within the recessed triangula opening 111 of the bearer in its shape shown in fig. 13.
  • the latter may absorb torsion forces resulting from the movements of the tan roof, thereby realizing under all circumstances the permanent pressure force.
  • fixation of the two wire springs 405 and 405' respectively ma also find place upon the horizontal edge flange of the tank roof 407, creatin constructional advantages, e.g. in building height and/or in slot distance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Building Environments (AREA)

Abstract

Un système d'étanchement de réservoir mobile est ménagé entre la paroi (1) droite immobile du réservoir et un toit (7) flottant de réservoir, flottant sur le liquide dans la circonférence de la paroi du réservoir dans une position verticale, comprenant également un collier annulaire, connu en soi, en tissu souple (8), le bord circonférentiel intérieur (10) étant raccordé à la circonférence extérieure au niveau du côté supérieur du toit du réservoir, le bord circonférentiel extérieur étant situé à un niveau supérieur près de la paroi du réservoir. L'amélioration que constitue l'invention consiste en un profilé (5) d'étanchement sans fin pressé dans un sens essentiellement radial à partir de la circonférence du toit de réservoir, contre la paroi de ce dernier, le long de toute la circonférence dans un sens horizontal, tout en exerçant une force de pression quasi permanente, par exemple au moyen d'un système à ressort composé d'un grand nombre d'éléments de ressort séparés (14). Chaque extrémité d'un élément de ressort est raccordée au bord circonférentiel du toit du réservoir, tandis que l'extrémité opposée de l'élément de ressort est raccordée directement au profilé d'étanchement san fin, qui tout le long de la paroi du réservoir maintient l'étanchéité entre la paroi du réservoir et le profilé par une force de pression quasi permanente.
PCT/NL1990/000007 1989-01-17 1990-01-17 Systeme d'etanchement de paroi de reservoir mobile WO1990008076A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019900702028A KR910700184A (ko) 1989-01-17 1990-01-17 부상덮개가 제공된 저장용 밀봉 시스템
FI904511A FI904511A0 (fi) 1989-01-17 1990-09-13 Taetningssystem foer lagringsbehaollare med flytande tak.
NO90904032A NO904032L (no) 1989-01-17 1990-09-14 Forseglingssystem for en lagringstank forsynt med et flytende tak.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8900103A NL8900103A (nl) 1989-01-17 1989-01-17 Afdichtingssysteem voor een opslagtank met zgn. drijvend tankdak.
NL8900103 1989-01-17

Publications (1)

Publication Number Publication Date
WO1990008076A1 true WO1990008076A1 (fr) 1990-07-26

Family

ID=19853967

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1990/000007 WO1990008076A1 (fr) 1989-01-17 1990-01-17 Systeme d'etanchement de paroi de reservoir mobile

Country Status (8)

Country Link
EP (1) EP0419589A1 (fr)
JP (1) JPH03504229A (fr)
KR (1) KR910700184A (fr)
AU (1) AU637598B2 (fr)
CA (1) CA2024605A1 (fr)
FI (1) FI904511A0 (fr)
NL (1) NL8900103A (fr)
WO (1) WO1990008076A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110723425A (zh) * 2018-07-17 2020-01-24 广东世华设备技术有限公司 一种铝型材浮盘
EP3702398A1 (fr) 2019-02-26 2020-09-02 World Link Industry Engineering GmbH Toit flottant pour réservoirs, son revêtement résistant au feu et son procédé de fabrication
CN115504105A (zh) * 2022-11-24 2022-12-23 江苏海裕新材料科技有限公司 一种全接液内浮盘及蜂窝板安装方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1369297A (fr) * 1963-09-17 1964-08-07 Texas Pipe Line Company Perfectionnements apportés aux réservoirs pour l'emmagasinage de liquides
GB1094690A (en) * 1964-07-10 1967-12-13 British Petroleum Co Seal for floating roofs of storage tanks
EP0080130A1 (fr) * 1981-11-19 1983-06-01 Ingenieurbüro Imhof GmbH Moyen d'étanchéité pour l'espace annulaire entre la paroi d'un réservoir et le toit flottant d'un grand réservoir de stockage
EP0122591A2 (fr) * 1983-04-14 1984-10-24 Ingenieurbüro Imhof GmbH Moyen d'étanchéité pour l'espace annulaire entre la paroi d'un réservoir et le toit flottant d'un grand réservoir de stockage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1369297A (fr) * 1963-09-17 1964-08-07 Texas Pipe Line Company Perfectionnements apportés aux réservoirs pour l'emmagasinage de liquides
GB1094690A (en) * 1964-07-10 1967-12-13 British Petroleum Co Seal for floating roofs of storage tanks
EP0080130A1 (fr) * 1981-11-19 1983-06-01 Ingenieurbüro Imhof GmbH Moyen d'étanchéité pour l'espace annulaire entre la paroi d'un réservoir et le toit flottant d'un grand réservoir de stockage
EP0122591A2 (fr) * 1983-04-14 1984-10-24 Ingenieurbüro Imhof GmbH Moyen d'étanchéité pour l'espace annulaire entre la paroi d'un réservoir et le toit flottant d'un grand réservoir de stockage

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110723425A (zh) * 2018-07-17 2020-01-24 广东世华设备技术有限公司 一种铝型材浮盘
EP3702398A1 (fr) 2019-02-26 2020-09-02 World Link Industry Engineering GmbH Toit flottant pour réservoirs, son revêtement résistant au feu et son procédé de fabrication
WO2020173988A1 (fr) 2019-02-26 2020-09-03 World Link Industry Engineering Gmbh Toit flottant pour réservoirs, revêtement ignifuge et leur procédé de fabrication
CN115504105A (zh) * 2022-11-24 2022-12-23 江苏海裕新材料科技有限公司 一种全接液内浮盘及蜂窝板安装方法
CN115504105B (zh) * 2022-11-24 2023-03-17 江苏海裕新材料科技有限公司 一种全接液内浮盘及蜂窝板安装方法

Also Published As

Publication number Publication date
KR910700184A (ko) 1991-03-14
FI904511A0 (fi) 1990-09-13
AU637598B2 (en) 1993-06-03
CA2024605A1 (fr) 1990-07-18
AU5023590A (en) 1990-08-13
EP0419589A1 (fr) 1991-04-03
JPH03504229A (ja) 1991-09-19
NL8900103A (nl) 1990-08-16

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