EP2409936B1 - Wassertank, Verfahren zum Aufbau eines solchen und Verwendung davon - Google Patents

Wassertank, Verfahren zum Aufbau eines solchen und Verwendung davon Download PDF

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Publication number
EP2409936B1
EP2409936B1 EP10170135.7A EP10170135A EP2409936B1 EP 2409936 B1 EP2409936 B1 EP 2409936B1 EP 10170135 A EP10170135 A EP 10170135A EP 2409936 B1 EP2409936 B1 EP 2409936B1
Authority
EP
European Patent Office
Prior art keywords
membrane
sidewalls
water tank
mastic
clamping plate
Prior art date
Legal status (The legal status 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 status listed.)
Not-in-force
Application number
EP10170135.7A
Other languages
English (en)
French (fr)
Other versions
EP2409936A1 (de
Inventor
Gerrit J. Kruithof
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AVASCO INDUSTRIES
Original Assignee
AVASCO IND
Avasco Industries
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 AVASCO IND, Avasco Industries filed Critical AVASCO IND
Priority to EP10170135.7A priority Critical patent/EP2409936B1/de
Priority to PL10170135T priority patent/PL2409936T3/pl
Priority to BE2010/0759A priority patent/BE1018789A3/nl
Publication of EP2409936A1 publication Critical patent/EP2409936A1/de
Application granted granted Critical
Publication of EP2409936B1 publication Critical patent/EP2409936B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/04—Linings
    • B65D90/046—Flexible liners, e.g. loosely positioned in the container
    • 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
    • B65D90/00—Component parts, details or accessories for large containers
    • 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
    • B65D88/02—Large containers rigid
    • B65D88/06—Large containers rigid cylindrical
    • B65D88/08—Large containers rigid cylindrical with a vertical axis

Definitions

  • the invention relates to a watertight bottom of a steel water tank suitable for storage of sprinkler water for fire prevention.
  • the invention also relates to a method for installing said bottom in a steel water tank.
  • Another way of installing a watertight steel water tank is by providing an inner liner, e.g. in rubber.
  • the inner liner covers the entire tank wall of the water tank and reaches up to the top, to above the water level.
  • Such tanks are e.g. described in CH 484 798 A or US 2004/0217118 A1 This solves the problems just mentioned, however there are some major drawbacks.
  • a problem with this type of design is that the water tank starts leaking and becomes useless whenever the liner gets teared or damaged.
  • Another problem is serious corrosion of the tank wall due to condensation between the liner and said wall and due to water vapor permeability.
  • Corrosion resistance can be enhanced by applying the liner to a lower part of the sidewalls as e.g. described in US 3,545,640 A , DE 298 07 285 U1 , DE 2 202 096 A1 and DE 201 04 828 U1 .
  • a problem with such tanks is however that when leakage occurs, the tank necessarily has to be emptied before the leak can be sealed. Best water resistance can be assured with a water tank as described in DE 298 07 285 U1 , but by welding of bolts to the sidewalls, corrosion resistance again diminishes.
  • the invention provides a water tank for water storage, comprising sidewalls (1) mounted on a foundation (2) and a membrane (4) covering the foundation and extending upwards onto the inner sidewalls, wherein the membrane only extends up to a lower part of the sidewalls, such that when the water tank is filled with water, the membrane (4) edge ends under the water level, wherein the membrane is applied to the sidewalls by means of a peripheral band of clamping plate, sealing bands being provided between the membrane and the sidewalls and between the membrane and the clamping plate, wherein the clamping plate comprises at least two rows of prepunched holes, extending parallel to the surface of the foundation, wherein the sidewalls comprise corresponding prepunched holes, wherein the sealing bands are made of mastic and are applied at the level of the rows of holes and wherein the membrane is watertightly applied between said inner sidewalls and the clamping plate by means of bolts through the holes and the mastic.
  • the membrane only extends up to a part of the sidewalls, being the part of space necessary for
  • the membrane only extends onto a lower part of the sidewalls and does not reach up to the top level of the tank. Because the membrane edge lies under the water level, there is a need for a watertight sealing of the membrane to the tank wall. This watertight sealing is provided by the embodiments of the present invention.
  • Said two or more rows (I, II) are horizontal, i.e. parallel to the surface of the foundation.
  • the advantage of the water tank of the invention is that it is cheap, simple, easy, reliable and fast to install. Furthermore the water tank is perfectly watertight. A mimum amount of membrane material is used. Due to the small thickness of the membrane in comparison with a tank bottom filled with concrete, the height of the tank may decrease for the same capacity (volume) thereby creating a reasonable cost saving. The process of installation solely relies on one installer from start to end.
  • the bolts Thanks to the bolts being applied through prepunched holes in the sidewalls of the tank, the bolts no longer have to be welded to the sidewalls. By welding the bolts to the sidewalls the corrosion resistance of the sidewalls and the bolts deteriorates. When leakage occurs, the tank does not necessarily have to be emptied in order to stop the leak. As the bolts are applied through the sidewalls of the tank and the clamping plate, they can be reached in order to (re)tighten them or to seal the leak otherwise through the holes in the sidewalls.
  • said membrane (4) extends 10 to 50 cm up onto the sidewalls (1), preferably 10 to 30 cm, or any suitable distance for fixing the membrane to the sidewalls with a fixation means hereby cost-effectively applying only a minimum amount of membrane needed.
  • At least one row of swell seal mastic (7) is provided in an uninterrupted watertight manner between the sidewalls (1) and the membrane (4).
  • a mastic (6) is provided in each hole (5a, 5b) in an uninterrupted watertight manner.
  • a mastic (10) is provided in an uninterrupted watertight manner, between the lower end of the fixation means (8) and the membrane (4), between the upper edge of the fixation means (8) and the membrane (4), and between the membrane upper edge and the sidewalls.
  • Said clamping plate (8) comprises one or more reinforcing ribs (11) extending out of its surface.
  • said reinforcing rib (11) is a bent edge or a seal edge.
  • said fixation means (8) comprises one or more additional peripheral bands (8) of clamping plates, each band comprising two or more horizontal rows (I, II) of prepunched holes (5b) corresponding to prepunched holes (5a) in the sidewalls.
  • the membrane (4) is preferably made of EPDM.
  • a protective layer (3) is applied on the bottom between the foundation (2) and the membrane (4) and this protective layer preferably partly extends up to the sidewalls of the tank.
  • a casing (12) holding gravel (13) is provided around the outside bottom of the tank for hiding a bolted (16) L-profile (14) by which the tank is mounted to the foundation (2).
  • the invention also provides a method for constructing a water tank as described above, said method comprising the steps of: a) mounting the sidewalls (1) of a water tank onto a foundation (2); b) spreading a membrane (4) onto the foundation (2) and extending said membrane up to a lower part of the sidewalls such that when the water tank is filled with water, the membrane extends onto the inner sidewalls to a level under the water level; c) applying an uninterrupted swell seal mastic (7) between the membrane (4) and the sidewalls (1); d) applying an uninterrupted mastic (6) between the membrane (4) and the sidewall (1) at the level of the rows (I, II) of holes (5a); e) applying an uninterrupted mastic (6) between the membrane (4) and a clamping plate (8) at the level of the rows (I, II) of holes (5b); f) fixing the clamping plate (8) to the sidewalls (1) by means of bolts (9) through the holes (5a, 5b) and the mastic (6); g) applying
  • the invention also provides for the use of a sprinkler water tank as described above for watertight storage.
  • the water tank may be installed on any horizontal surface that is strong and stable enough to support the weight of the tank and the water in it.
  • the water tank may be installed (on a concrete slab) on the ground, but may also be installed on a tower, a roof top or any other supporting means.
  • Figure 1 shows a sectional view of a cylindrical water tank (1) placed on a concrete foundation (2).
  • the tank is mounted level (tolerance of about 10 mm) and secured with anchor bolts into the concrete slab.
  • the water tank is made of galvanized modular steel sheets, assembled with silo bolts and sealed with mastic.
  • a protective layer (3) is placed on top of the concrete surface and partly extends up onto the sides of the tank. Examples of protective layers are geotextiles (300 gr/m 2 ) or equivalents.
  • the membrane (4) is first positioned on top of the protective layer, in the center of the tank, in a specially packed embodiment. It is then opened to cover the bottom of the tank hereby partly extending up onto the sides of the tank, preferably 20 to 30 cm. As such the membrane (4) does not reach above the water level, but ends under the water level, inside the tank.
  • the membrane is preferably made of EPDM (1.2 mm thickness) or equivalents.
  • the tank wall is provided with prepunched holes (5a) in two horizontal rows (I, II) parallel to the bottom of the tank.
  • a mastic (6) is provided on the inside of the tank in an uninterrupted manner along each of the two horizontal rows (I, II) of prepunched holes.
  • a swelling joint with swell seal mastic (7) is applied, also preferably in an uninterrupted manner.
  • the swelling joint may be the same material as the mastic.
  • the membrane (4) is pressed tightly onto the two rows (I, II) of mastic (6) and the swell seal mastic (7), hereby preventing any leaks of water.
  • a clamping plate (8) provided with two horizontal rows (I, II) of prepunched holes (5b) is applied on top of the membrane and fixed to the corresponding rows of prepunched holes (5a) in the tank wall. Both rows of holes of the clamping plate (8) are also provided with mastic (6) in uninterrupted horizontal rows.
  • the clamping plate (8) is fixed onto the tank wall (1) segment by segment by means of silo bolts (9) that fit into the holes (5a, 5b), hereby forming an uninterrupted peripheral clamping band (8).
  • the upper and lower side of the clamping plate (8) is provided with an uninterrupted row of mastic (10), so as to firmly seal the clamping plate preventing any leakage of water from the tank.
  • the clamping plate (8) has an upper edge (11) that is slightly folded open towards the center of the tank.
  • Other embodiments of such a feature are possible.
  • This embodiment here also eases the application of the mastic (10) into the space of the folded upper edge (11).
  • an upstanding casing (12) is applied holding gravel (13) between the casing and the tank.
  • An L-profile (14) is applied on to the tank wall and leveled with shims (15) and fixed by means of silo bolts (16) to tank wall (1) and with anchor bolts (16) to the concrete floor (2) to prevent gravel (13) from piercing through the bottom of the protective liner (3) and the membrane (4).
  • the upstanding casing (12) is preferably about 15 cm high.
  • the filled casing provides an esthetical look of the tank and protects any dirt or other material from entering under the side of the tank.
  • the mastic (6, 7, 10) used for sealing is specially made for good adherence to both the galvanized steel tank and the (EPDM) membrane.
  • Examples of mastics suitable for this purpose are AvascoFlex and AvascoRub or equivalents.
  • the inside of the tank (1) may be protected against corrosion and fouling.
  • the water inside the tank may also be treated against fouling.
  • the tank is preferably grounded.
  • Figure 2 shows a detailed view of the tank bottom, showing the sidewalls (1) and the membrane (4) on the bottom.
  • the clamping plate (8) is mounted close to the bottom of the tank, but could also be mounted at any higher level.
  • Figure 2 shows the empty watertight water tank which is ready for receiving water. As can be seen, the clamping plate is mounted at the lower bottom of the tank.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Claims (14)

  1. Wasserbehälter zur Wasserspeicherung, umfassend auf einem Fundament (2) angebrachte Seitenwände (1) und eine Folie (4), die das Fundament bedeckt und sich nach oben auf die inneren Seitenwände (1) erstreckt, wobei sich die Folie (4) nur bis zu einem unteren Teil der Seitenwände (1) erstreckt, derart, dass, wenn der Wasserbehälter mit Wasser gefüllt ist, der Rand der Folie (4) unter dem Wasserspiegel endet und wobei die Folie (4) mittels eines Umfangsbands (8) aus einer Klemmplatte auf die Seitenwände (1) aufgebracht ist, wobei zwischen der Folie (4) und den Seitenwänden (1) sowie zwischen der Folie (4) und der Klemmplatte (8) Dichtungsbänder (6) vorgesehen sind, dadurch gekennzeichnet, dass die Klemmplatte (8) mindestens zwei Reihen (I, II) von vorgestanzten Löchern (5b) umfasst, die sich parallel zur Oberfläche des Fundaments (2) erstrecken, dass die Seitenwände (1) entsprechende vorgestanzte Löcher (5a) umfassen, dass die Dichtungsbänder (6) aus Kitt (6) hergestellt sind und auf der Höhe der Reihen (I, II) von Löchern (5b) aufgebracht sind und dass die Folie (4) mittels Bolzen (9) durch die Löcher (5a, 5b) und den Kitt (6, 7) wasserdicht zwischen den inneren Seitenwänden (1) und der Klemmplatte (8) aufgebracht ist.
  2. Wasserbehälter nach Anspruch 1, dadurch gekennzeichnet, dass sich die Folie (4) 10 bis 50 cm auf die Seitenwände (1) nach oben erstreckt, bevorzugt 10 bis 30 cm.
  3. Wasserbehälter nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass mindestens eine Reihe aus Schwelldichtungskitt (7) auf ununterbrochene wasserdichte Weise zwischen den Seitenwänden (1) und der Folie (4) vorgesehen ist.
  4. Wasserbehälter nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass ein Kitt (6) auf ununterbrochene wasserdichte Weise in jedem Loch (5a, 5b) vorgesehen ist.
  5. Wasserbehälter nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass ein Kitt (10) auf ununterbrochene wasserdichte Weise zwischen dem unteren Ende der Klemmplatte (8) und der Folie (4), zwischen dem oberen Rand der Klemmplatte (8) und der Folie (4) sowie zwischen dem oberen Rand der Folie und den Seitenwänden vorgesehen ist.
  6. Wasserbehälter nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Klemmplatte (8) eine oder mehrere Versteifungsrippen (11) umfasst, die sich aus ihrer Oberfläche heraus erstrecken.
  7. Wasserbehälter nach Anspruch 6, dadurch gekennzeichnet, dass es sich bei der Versteifungsrippe (11) um einen umgebogenen Rand oder einen Dichtungsrand handelt.
  8. Wasserbehälter nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass er ein oder mehrere zusätzliche Umfangsbänder (8) aus Klemmplatten umfasst, wobei jedes Band zwei oder mehr horizontale Reihen (I, II) von vorgestanzten Löchern (5b) umfasst, die vorgestanzten Löchern (5a) in den Seitenwänden entsprechen.
  9. Wasserbehälter nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Folie (4) aus EPDM hergestellt ist.
  10. Wasserbehälter nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass eine Schutzschicht (3) zwischen dem Fundament (2) und der Folie (4) auf den Boden aufgebracht ist.
  11. Wasserbehälter nach Anspruch 10, dadurch gekennzeichnet, dass sich die Schutzschicht (3) teilweise auf die Seitenwände (1) des Behälters nach oben erstreckt.
  12. Verfahren zum Bauen eines Wasserbehälters der Ansprüche 1 bis 11, wobei das Verfahren folgende Schritte umfasst:
    a. Anbringen der Seitenwände (1) eines Wasserbehälters auf einem Fundament (2);
    b. Auslegen einer Folie (4) auf dem Fundament (2) und Ausbreiten der Folie auf die inneren Seitenwände (1) bis zu einem unteren Teil der Seitenwände (1), derart, dass wenn der Wasserbehälter mit Wasser gefüllt ist, sich die Folie auf eine Höhe unter dem Wasserspiegel erstreckt;
    c. Aufbringen eines ununterbrochenen Schwelldichtungskitts (7) zwischen der Folie (4) und den Seitenwänden (1);
    d. Aufbringen eines ununterbrochenen Kitts (6) zwischen der Folie (4) und der Seitenwand (1) auf der Höhe der Reihen (I, II) von Löchern (5a);
    e. Aufbringen eines ununterbrochenen Kitts (6) zwischen der Folie (4) und einer Klemmplatte (8) auf der Höhe der Reihen (I, II) von Löchern (5b);
    f. Fixieren der Klemmplatte (8) an den Seitenwänden (1) mittels Bolzen (9) durch die Löcher (5a, 5b) und den Kitt (6);
    g. Aufbringen von Kitt (10) auf die Ränder der Klemmplatte (8) und der Folie (4), Abdichten von etwaigen Zwischenräumen zwischen dem Rand der Folie (4) und den Seitenwänden (1) und von etwaigen Zwischenräumen zwischen der Klemmplatte (8) und der Folie (4).
  13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass es den zusätzlichen Schritt des Bereitstellens einer äußeren Hülle um den Boden des Wasserbehälters umfasst.
  14. Verwendung eines Wasserbehälters nach einem der Ansprüche 1 bis 11 zur wasserdichten Speicherung.
EP10170135.7A 2010-07-20 2010-07-20 Wassertank, Verfahren zum Aufbau eines solchen und Verwendung davon Not-in-force EP2409936B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP10170135.7A EP2409936B1 (de) 2010-07-20 2010-07-20 Wassertank, Verfahren zum Aufbau eines solchen und Verwendung davon
PL10170135T PL2409936T3 (pl) 2010-07-20 2010-07-20 Zbiornik wody, sposób wykonania takiego zbiornika i jego zastosowanie
BE2010/0759A BE1018789A3 (nl) 2010-07-20 2010-12-23 Watertankbodem.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10170135.7A EP2409936B1 (de) 2010-07-20 2010-07-20 Wassertank, Verfahren zum Aufbau eines solchen und Verwendung davon

Publications (2)

Publication Number Publication Date
EP2409936A1 EP2409936A1 (de) 2012-01-25
EP2409936B1 true EP2409936B1 (de) 2013-10-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10170135.7A Not-in-force EP2409936B1 (de) 2010-07-20 2010-07-20 Wassertank, Verfahren zum Aufbau eines solchen und Verwendung davon

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EP (1) EP2409936B1 (de)
BE (1) BE1018789A3 (de)
PL (1) PL2409936T3 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104912208B (zh) * 2015-06-17 2017-06-13 中冶南方工程技术有限公司 一种煤气柜柜外底部边缘板的防腐结构及处理方法
CN112922425B (zh) * 2021-03-24 2022-07-01 中化二建集团有限公司 无底螺栓连接式水罐防渗漏施工方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3545640A (en) * 1968-09-12 1970-12-08 Exxon Research Engineering Co Protective gas seals for non-metallic tank bottoms
CH484798A (de) * 1969-06-24 1970-01-31 Ironflex Ag Flüssigkeitsbehälter
DE2202096A1 (de) * 1972-01-18 1973-08-02 Erhard Joos Innenhuelle aus kunststoff zum auskleiden eines behaelters
US4068777A (en) * 1975-11-25 1978-01-17 Metal-Cladding, Inc. Expansible bottom structure for fiberglass reinforced plastic tanks
DE29807285U1 (de) * 1998-04-22 1998-07-30 Utek Umweltschutztechnologien GmbH, 06785 Oranienbaum Flachbodentank mit Leckschutzauskleidung
DE20104828U1 (de) * 2001-03-20 2001-07-05 Utek Umweltschutztechnologien GmbH, 06785 Oranienbaum Verbindungssystem zur Befestigung einer flexiblen Kunststoffolie zur Leckschutzauskleidung an der Innenseite der Tankwandung eines Lagertanks
US20040217118A1 (en) * 2003-04-29 2004-11-04 John Nash Portable liquid storage tank

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BE1018789A3 (nl) 2011-08-02
EP2409936A1 (de) 2012-01-25
PL2409936T3 (pl) 2014-03-31

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