EP2899323B1 - Slotted pipe with fire seal drainage system and its use - Google Patents

Slotted pipe with fire seal drainage system and its use Download PDF

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Publication number
EP2899323B1
EP2899323B1 EP14002805.1A EP14002805A EP2899323B1 EP 2899323 B1 EP2899323 B1 EP 2899323B1 EP 14002805 A EP14002805 A EP 14002805A EP 2899323 B1 EP2899323 B1 EP 2899323B1
Authority
EP
European Patent Office
Prior art keywords
flap
slotted pipe
pivoting
liquid
slotted
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.)
Active
Application number
EP14002805.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2899323A1 (en
Inventor
Josef Matejka
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.)
Cs-Beton Sro
Original Assignee
Cs-Beton Sro
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 Cs-Beton Sro filed Critical Cs-Beton Sro
Priority to PL14002805T priority Critical patent/PL2899323T3/pl
Publication of EP2899323A1 publication Critical patent/EP2899323A1/en
Application granted granted Critical
Publication of EP2899323B1 publication Critical patent/EP2899323B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/04—Pipes or fittings specially adapted to sewers
    • E03F3/046—Open sewage channels

Definitions

  • the invention relates to the construction of drainage system formed by slotted pipes, wherein at least one slotted pipe has a fireproof seal that prevents the spread of fire in a concrete precast slotted pipe system used to drain water from paved roads.
  • the first objective is to prevent flame spreading in the drainage system of the slotted pipes whilst maintaining the same height of the fireproof seal element as other elements of the system.
  • the second objective is to eliminate the need to keep water in a part of the system, thus ensuring system reliability.
  • the third objective is to provide greater hydraulic purity of the solutions by eliminating unnecessary hydraulic losses and clogging due to settling of impurities.
  • the basic concept of the invention is the use of fire seals in the slotted pipe systems, an element externally dimensionally identical to the slotted pipe, but without a slot and with damming of the internal flow profile via a dry pivoting flap, or by two or more flaps. Flaps create two or more fireproof areas with a lack of oxygen intake, and thereby the ability to extinguish the fire whilst cooling the burning liquid and prevent evaporation of burning gases from the fluid flowing through.
  • the flap is pivotally connected to the element at the top of the flow profile. The swivel movement of the flap is preferably at a limited angle of a maximum of 79° in the direction of the gradient of the liquid flow.
  • the flap is directly attached to the wall of the upper part of the flow profile, or via another fastening element, which mediates the connection between the flap and the inner wall of the slotted pipe.
  • the flap prevents the direct transfer of hot burning gases from the area in front of the flap into the space behind the flap, even preventing flame flashing using flap plug-segments.
  • the effect of flame flashing in the early stage of flame spreading, which normally accompanies flame spreading in closed pipe systems, wherein the expansion of burning gas causes an increase in pressure in the pipes, does not occur in slotted pipes due to the opening of the inlet slots in all system elements, except the element with fireproof seal.
  • This slot also leads to smooth and easy pressure equalization between the flow profile with fireproof seal with the burning liquid and the surrounding environment.
  • the weight of the pivoting flap with optional weight is created so that the resulting pressure acting on the valve was not able, at different gradients of the slotted pipe, to overcome the force of gravity ensuring the sealing of the flap with an installed counterweight.
  • the flap fills the entire space of the flow profile.
  • the initial position of the flap is in a vertical position, see e.g. Fig. 11 , although it is possible that the initial position of the flap is limited by a certain angle, see Fig. 12 , or it is expanded against the direction of the flow of the liquid, see Fig. 13 ; such a design typically requires the creation of recesses in the lower inner wall of the slotted pipe.
  • the flow profile can thus be closed from a variety of positions, of which the above figures are proof.
  • the bottom edge of the flap is thus constantly in contact with the liquid, which is ensured by the actual weight of the flap with counterweight and acting force of gravity. Flashing of flames on the sides of the flap is prevented by the sliding segments of the flap. This ensures that the flap will not be opened more and the flame will not spread behind the flap on the side of the outlet, even when the ignition of flammable fluid in the system, not even if the flammable liquids are ignited in the system. This is due to the fact that as specified above, the weight of the flap along with the ventilation of the slotted pipe system through openings, through which liquid flows into the system, does not allow for such a an increase in pressure in the slotted pipe that would open the flap above the liquid level.
  • the profile of the pipe of the fireproof seal is in a vertical position from the location of the flap, and in the area behind the flap, in the direction of its opening, in the shape of a rectangle or square, and that the tightness of all of the outer edges of the flap in contact with the inner walls of the slotted pipe is maintained.
  • the space in which the flap moves, must, in any of its swings copy the edges of the flap, with the exception of the bottom edge, which copies the lower edge of the flap only when the flap is in a vertical position.
  • this is achieved through a mutual combination of minimizing the thickness of the gap between the pivoting flap and the inner wall of the pipe and maximizing the length of the gap.
  • the flap has balancing elements for fine tuning of the swing operation depending on the expected environmental conditions.
  • the flap operates completely independently only through the effect of the horizontal forces caused by increasing and decreasing the flow rate of the liquid and the gravitational forces of the earth. This ensures the smooth closing and opening of the flap.
  • the drainage system of the slotted pipes with fireproof seal can be manufactured as single-flap and dual-flap, i.e. with a locking flap placed behind the first flap in the direction of the flow of the liquid, or multi-flap, i.e. made up of several flaps, fitted into one or more slotted pipes.
  • the drainage system of the slotted pipes contains at least one element - a slotted pipe - which contains at least one fireproof seal as described above.
  • each pivoting flap may be supplemented by other appropriate measures that increase safety. Examples include tightening their sides, additional sidewalls extending the route of burning gases, thereby cooling the gas mixture below the combustion temperature. These sidewalls are conveniently placed vertically to the side profile of the pivoting flap and must allow for the free movement of the flap, and they replicate the side walls of the interior space of the slotted pipe.
  • the possible shape of the sidewalls should allow for the largest possible area adjacent to the walls of the slotted pipe while maintaining the required momentum of the flap and tilt angle.
  • a suitable shape of the sidewalls would be a circle or ellipse, where the side edge of the flap passes through their centre, or a lozenge, where the side edge of the flap is placed vertically to its diagonal. In any case, the sidewall should not restrict the flap with regard to its desired rotation.
  • the system or its individual elements - slotted pipe - may be equipped with a service opening in the area in front of the flap, behind the flap or above the flap.
  • the length of the fireproof seal element may be modified, i.e. manufactured in various lengths ranging from 50 cm to 20 m.
  • Slotted pipe 1 of the sewage drainage system is fitted with a fireproof seal made up of a pivoting flap 2 , which is affixed pivotally to the upper inner wall 11 of the slotted pipe 1 by means of a rotary connection 21 so that it permits liquid flow into the slotted pipe 1 , and depending on the speed and the amount of liquid, this creates pressure on the flap 2 , which, as a consequence of the force exerted by the liquid and gravity pivots the flap 2 in the direction of the liquid flow.
  • the flap prevents the burning gas from proceeding further in the direction of the liquid flow above its surface.
  • the flap 2 in a vertical position and at any of its rotations, fills the overall space above the liquid so that it adjoins to the internal walls of the slotted pipe 1 . If liquid is present, the flap 2 is at least continuously partially immersed in the liquid so that it does not pass the burning gases in the direction of the liquid flow.
  • the slotted pipe 1 of the sewage drainage system according to example 1 further contains a service opening 3 , which is created behind a rotary joint 21 in the direction of the flow of the liquid.
  • the slotted pipe 1 of the sewage drainage system according to example 1 contains two fireproof seals in the form of the flaps 2 according to example 1.
  • the invention is useful for preventing spreading of fire in a slotted pipe sewage system. Individual fire seals divide the system into fire sections. Normally, the length is around 50 m, depending on the projected length of fire hoses.
  • the invention is mainly applicable in highway tunnels, airports and industrial plants where it is necessary to prevent the free spreading of a fire through the system in case of fire.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Pipe Accessories (AREA)
EP14002805.1A 2014-01-24 2014-08-12 Slotted pipe with fire seal drainage system and its use Active EP2899323B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14002805T PL2899323T3 (pl) 2014-01-24 2014-08-12 Rura szczelinowa z systemem ochrony przeciwpożarowej i jej zastosowanie

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2014-57A CZ306259B6 (cs) 2014-01-24 2014-01-24 Štěrbinová trouba s protipožárním uzávěrem odvodňovacího systému a jeho použití
CZ2014029131 2014-01-24

Publications (2)

Publication Number Publication Date
EP2899323A1 EP2899323A1 (en) 2015-07-29
EP2899323B1 true EP2899323B1 (en) 2017-05-31

Family

ID=53838112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14002805.1A Active EP2899323B1 (en) 2014-01-24 2014-08-12 Slotted pipe with fire seal drainage system and its use

Country Status (3)

Country Link
EP (1) EP2899323B1 (cs)
CZ (1) CZ306259B6 (cs)
PL (1) PL2899323T3 (cs)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109295869B (zh) * 2018-10-23 2021-05-28 上海市基础工程集团有限公司 水域工况下大断面箱涵改排接口装置及方法
GB2589823B (en) * 2019-09-23 2022-01-19 Alumasc Building Products Ltd Modular conduit-connector apparatus
CN112057783A (zh) * 2020-08-06 2020-12-11 常州大学 一种工业管道支管防爆阻火装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3032734B2 (ja) * 1997-07-30 2000-04-17 神戸樹脂工業株式会社 耐火材被覆管継手
JP3137932B2 (ja) * 1997-09-10 2001-02-26 神戸樹脂工業株式会社 耐火性被覆管及びその製造方法とその製造装置
DE10016099A1 (de) * 2000-03-17 2001-09-20 Rinninger Hans & Sohn Schacht
CZ14467U1 (cs) * 2004-03-26 2004-06-21 Csábetonźás@Ár@Áo Bezpečnostníštěrbinová trouba
DE202007008019U1 (de) * 2007-06-05 2008-10-16 Raimund Höllein Carolinenhütte GmbH Entwässerungssystem
IT1391720B1 (it) * 2008-11-20 2012-01-27 Futura Spa Circuito idraulico per il deflusso di acqua da una galleria, in particolare acqua di un impianto antincendio
DE202011052123U1 (de) * 2011-11-28 2012-01-16 Aco Severin Ahlmann Gmbh & Co. Kg Entwässerungsschacht für einen Tunnel

Also Published As

Publication number Publication date
CZ306259B6 (cs) 2016-11-02
PL2899323T3 (pl) 2018-10-31
CZ201457A3 (cs) 2015-08-05
EP2899323A1 (en) 2015-07-29

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