ITMI20090792A1

ITMI20090792A1 - EQUIPMENT TO REMOVE, IN CASE OF FIRE, FUMES AND GAS HARMFUL FROM A ROAD OR HIGHWAY GALLERY

Info

Publication number: ITMI20090792A1
Application number: IT000792A
Authority: IT
Inventors: Giacomo Annibale Moretti; Alberto Podetti
Original assignee: S P A I S R L
Priority date: 2009-05-11
Filing date: 2009-05-11
Publication date: 2010-11-12

Description

“APPARECCHIATURA PER RIMUOVERE, IN CASO D’INCENDIO, FUMI E GAS NOCIVI DA UNA GALLERIA STRADALE O AUTOSTRADALE” "EQUIPMENT FOR REMOVING, IN THE EVENT OF FIRE, HARMFUL FUMES AND GAS FROM A ROAD OR MOTORWAY TUNNEL"

DESCRIZIONE DESCRIPTION

Forma oggetto della presente invenzione un’apparecchiatura per rimuovere, in caso d’incendio, fumi e gas nocivi da una galleria stradale o autostradale. The subject of the present invention is an equipment to remove, in the event of a fire, noxious fumes and gases from a road or motorway tunnel.

Apparecchiature per rimuovere gas da una galleria stradale o autostradale sono ben note nella tecnica ed ampiamente utilizzate nelle gallerie esistenti e comprendono normalmente almeno una serie di ventole, poste in corrispondenza della volta della galleria, che crea un flusso d’aria che spinge verso l’esterno l’aria viziata ed i gas di scarico, richiamando dall’esterno un flusso d’aria pulita. Equipment for removing gas from a road or motorway tunnel are well known in the art and widely used in existing tunnels and normally comprise at least a series of fans, placed in correspondence with the vault of the tunnel, which creates an air flow that pushes towards the tunnel. the stale air and exhaust gases, recalling a flow of clean air from the outside.

In alternativa o in aggiunta alle ventole (indicate con il riferimento numerico 9 nella figura allegata), si possono immettere nella galleria, mediante canali (omessi nella figura allegata per semplicità di rappresentazione grafica) realizzati nelle barriere laterali di sicurezza o profili redirettivi tipo New-Jersey oppure nel paramento della galleria, getti d’aria pulita, schematicamente indicati nella figura allegata dalle frecce 13. Alternatively or in addition to the fans (indicated with the numerical reference 9 in the attached figure), they can be introduced into the tunnel, by means of channels (omitted in the attached figure for simplicity of graphic representation) made in the side safety barriers or redirective profiles type New- Jersey or in the face of the tunnel, jets of clean air, schematically indicated in the attached figure by arrows 13.

Come prescritto dalle Norme vigenti, in caso d’incendio le ventole 9 vengono fermate ed i getti d’aria pulita 13 vengono interrotti per non alimentare l’incendio stesso. As required by current regulations, in the event of a fire the fans 9 are stopped and the jets of clean air 13 are interrupted so as not to feed the fire itself.

Le ventole 9 rimuovono (o possono rimuovere) i gas che si raccolgono in prossimità della volta della galleria (o, comunque, nella porzione di galleria avente un’altezza superiore a 2-2,5 metri dal piano stradale), ma presentano il grave inconveniente di non rimuovere (o di rimuovere solo in piccola parte) i gas dalla porzione di galleria avente un’altezza non superiore a 2-2,5 metri dal piano stradale. The fans 9 remove (or can remove) the gases that collect near the vault of the tunnel (or, in any case, in the portion of the tunnel having a height greater than 2-2.5 meters from the road level), but present the serious drawback of not removing (or removing only a small part) of the gases from the portion of the tunnel having a height not exceeding 2-2.5 meters from the road level.

In condizioni normali i getti d’aria pulita 13 ovviano (almeno in parte) a tale inconveniente. Under normal conditions, the jets of clean air 13 obviate (at least in part) this drawback.

In caso d’incendio le ventole 9 sono ferme, i getti d’aria pulita 13 sono interrotti ed ai gas normalmente presenti nella gallerìa s’aggiungono i fumi dell’incendio ed i gas nocivi, rilasciati dal materiale che riveste il piano stradale a causa del calore dell’incendio, che (come il biossido di carbonio) s’accumulano in prossimità del piano stradale perché più pesanti delParia. In the event of a fire, the fans 9 are stopped, the jets of clean air 13 are interrupted and the gases normally present in the gallery are joined by the fumes of the fire and the harmful gases, released by the material that covers the road surface due to heat from the fire, which (like carbon dioxide) accumulate near the road surface because they are heavier than air.

Tali fumi e gas nocivi (schematicamente indicati nella figura allegata mediante le frecce 12) sono pericolosi per le persone bloccate in galleria dall’incendio: la loro rimozione costituisce perciò un’esigenza molto sentita dai progettisti di gallerie stradali o autostradali. These noxious fumes and gases (schematically indicated in the attached figure by arrows 12) are dangerous for people trapped in the tunnel by the fire: their removal therefore constitutes a much felt need by the designers of road or motorway tunnels.

Scopo del presente trovato è rimuovere da una galleria, in caso d’incendio, fumi e gas nocivi pericolosi per le persone bloccate nella galleria; tale scopo è raggiunto mediante un’apparecchiatura che presenta gli elementi caratterizzanti indicati nella rivendicazione indipendente 1. The purpose of the present invention is to remove from a tunnel, in the event of a fire, fumes and harmful gases that are dangerous for people trapped in the tunnel; this purpose is achieved by means of an equipment that has the characterizing elements indicated in independent claim 1.

Ulteriori caratteristiche vantaggiose del trovato formano oggetto delle rivendicazioni dipendenti. Further advantageous characteristics of the invention form the subject of the dependent claims.

Un’apparecchiatura realizzata secondo il trovato per rimuovere, in caso d’incendio, fumi e gas nocivi da una galleria comprende mezzi, posti sotto il piano stradale della galleria, atti a rimuovere fumi e gas nocivi dalla porzione di galleria avente un’altezza dal piano stradale non inferiore ad un valore prefissato (preferibilmente: 2-2,5 metri). An apparatus made according to the invention to remove, in the event of a fire, noxious fumes and gases from a tunnel comprises means, located under the road level of the tunnel, suitable for removing harmful fumes and gases from the portion of the tunnel having a height from road level not lower than a predetermined value (preferably: 2-2.5 meters).

I mezzi che asportano fumi e gas nocivi comprendono: Means that remove harmful fumes and gases include:

- almeno un vano, posto sotto il piano stradale della galleria alla base di uno dei piedritti della galleria e collegato con l’interno della galleria, preferibilmente, mediante griglie, bocchette o simili; e - at least one compartment, located under the road level of the tunnel at the base of one of the piers of the tunnel and connected with the interior of the tunnel, preferably, by grids, vents or the like; And

- mezzi d’aspirazione, atti ad aspirare nelfalmeno un vano, tramite le griglie o bocchette, i fumi ed i gas nocivi ed a scaricarli all’esterno. - suction means, designed to suck in at least one compartment, through the grids or vents, the fumes and harmful gases and to discharge them outside.

L’almeno un vano è parallelo al piedritto cui è adiacente ed è collegato con Γ interno della galleria almeno in corrispondenza dei mezzi d’aspirazione. The at least one compartment is parallel to the abutment to which it is adjacent and is connected with the interior of the tunnel at least in correspondence with the suction means.

Il trovato sarà ora descritto con riferimento ad una forma di realizzazione puramente esemplificativa (e quindi non limitativa) illustrata nella figura allegata, che mostra schematicamente una vista prospettica di una porzione di galleria 2 equipaggiata con un’apparecchiatura, realizzata secondo il trovato, per rimuovere fumi e gas nocivi 12 in caso d’incendio. The invention will now be described with reference to a purely exemplary (and therefore non-limiting) embodiment illustrated in the attached figure, which schematically shows a perspective view of a portion of the tunnel 2 equipped with an apparatus, made according to the invention, for removing noxious fumes and gases 12 in case of fire.

Tale apparecchiatura comprende mezzi 3 (posti sotto il piano stradale 4 della galleria 2 ed atti a rimuovere fumi e gas nocivi 12 dalla porzione di galleria 2 avente un’altezza dal piano stradale 4 non inferiore ad un valore prefissato, preferibilmente 2-2,5 metri) che comprendono: This equipment comprises means 3 (located under the road surface 4 of the tunnel 2 and suitable for removing harmful fumes and gases 12 from the portion of the tunnel 2 having a height from the road surface 4 not lower than a predetermined value, preferably 2-2.5 meters) which include:

- un vano 6, posto sotto il piano stradale 4 della galleria 2 alla base di uno dei piedritti 5 e collegato con l’interno della galleria 2, preferibilmente, mediante griglie o bocchette 8 o simili; e - a compartment 6, placed under the road level 4 of the tunnel 2 at the base of one of the piers 5 and connected with the interior of the tunnel 2, preferably, by grids or vents 8 or the like; And

- mezzi d’aspirazione 7, atti ad aspirare nel vano 6, tramite le griglie o bocchette 8, i fumi e gas nocivi 12 dovuti ad un incendio ed a scaricarli all’esterno. - suction means 7, designed to suck in compartment 6, through the grids or vents 8, the fumes and harmful gases 12 due to a fire and to discharge them outside.

Nella figura allegata, le frecce 11 mostrano schematicamente i fumi e gas nocivi 12 aspirati nel vano 6 dai mezzi d’aspirazione 7. In the attached figure, the arrows 11 schematically show the fumes and harmful gases 12 sucked into the compartment 6 by the suction means 7.

Il vano 6 è parallelo al piedritto 5 cui è adiacente ed è collegato con l’interno della galleria 2, tramite le griglie o bocchette 8, almeno in corrispondenza dei mezzi d’aspirazione 7, non descritti in questa sede perché in sé noti (ad esempio, aspiratori tipo Flakt o simili). The compartment 6 is parallel to the abutment 5 to which it is adjacent and is connected with the interior of the gallery 2, by means of the grids or openings 8, at least in correspondence with the suction means 7, not described here because they are known per se (e.g. for example, Flakt or similar vacuum cleaners).

Un tecnico del ramo può determinare di volta in volta, senza dovere esplicare attività inventiva, il numero e la portata dei mezzi d’aspirazione 7 che sono ottimali per rispondere alle esigenze di una specifica galleria 2. A person skilled in the art can determine from time to time, without having to carry out an inventive step, the number and capacity of the suction means 7 which are optimal to meet the needs of a specific tunnel 2.

Senza uscire dall’ambito del trovato, l’apparecchiatura può comprendere una coppia di vani 6, posti sotto il piano stradale 4 della galleria 2 alla base dei piedritti 5 e collegati con l’interno della galleria 2 (preferibilmente mediante le griglie o bocchette 8) e con mezzi d’aspirazione 7, atti ad aspirare nei vani 6 (tramite le griglie o bocchette 8) i fumi e gas nocivi 12 dovuti ad un incendio ed a scaricarli all’esterno. Without departing from the scope of the invention, the apparatus can comprise a pair of compartments 6, placed under the road surface 4 of the tunnel 2 at the base of the piers 5 and connected to the interior of the tunnel 2 (preferably by means of the grids or openings 8 ) and with suction means 7, suitable for sucking in the compartments 6 (through the grids or vents 8) the fumes and noxious gases 12 due to a fire and discharging them to the outside.

I mezzi d’aspirazione 7 possono essere attivati da un operatore oppure da mezzi, in sé noti, che li attivano quando rilevano un incendio nella galleria 2; se la galleria 2 è equipaggiata con un impianto antincendio, i mezzi d’aspirazione 7 sono vantaggiosamente attivati contemporaneamente all<5>impianto antincendio. The suction means 7 can be activated by an operator or by means, known per se, which activate them when they detect a fire in tunnel 2; if tunnel 2 is equipped with a fire-fighting system, the suction means 7 are advantageously activated simultaneously with the fire-fighting system.

In una possibile forma di realizzazione, rimpianto antincendio comprende: - un serbatoio d’acqua, posto in posizione sopraelevata rispetto alla galleria 2 e collegato da almeno un tubo ad almeno un collettore fissato alla volta della galleria 2 e munito di spruzzatori, alimentato per caduta libera dall’acqua raccolta nel serbatoio, il dislivello tra il serbatoio e la volta della galleria 2 fornendo all’acqua la pressione necessaria ad alimentare correttamente gli spruzzatori; In a possible embodiment, the fire-fighting system comprises: - a water tank, placed in an elevated position with respect to the tunnel 2 and connected by at least one pipe to at least one manifold fixed to the vault of the tunnel 2 and equipped with sprinklers, fed by gravity frees from the water collected in the tank, the difference in height between the tank and the vault of the tunnel 2, providing the water with the necessary pressure to feed the sprayers correctly;

- una vasca, posta ad un livello inferiore a quello del piano stradale 4 della galleria 2 e connessa al serbatoio da almeno una conduttura, che riceve le acque di scolo della galleria 2 raccolte, vantaggiosamente, tramite i vani 6 dell’apparecchiatura per rimuovere fumi e gas nocivi 12: l’acqua raccolta nelle vasca viene pompata nel serbatoio tramite la suddetta almeno una conduttura, riducendo ulteriormente il volume d’acqua prelevato dall’acquedotto. - a tank, located at a lower level than that of the road level 4 of the tunnel 2 and connected to the tank by at least one pipe, which receives the drainage water from the tunnel 2, which is advantageously collected through the compartments 6 of the apparatus for removing fumes and harmful gases 12: the water collected in the tank is pumped into the tank through the aforementioned at least one pipe, further reducing the volume of water taken from the aqueduct.

Senza uscire dall'ambito del trovato, un tecnico esperto può apportare all’ apparecchiatura precedentemente descritta per rimuovere fumi e gas nocivi da una galleria tutte le modifiche ed i perfezionamenti suggeriti dalla normale esperienza e/o dalla naturale evoluzione della tecnica. Without departing from the scope of the invention, an expert technician can make all the modifications and improvements suggested by normal experience and / or the natural evolution of the technique to the previously described equipment to remove harmful fumes and gases from a tunnel.

Claims

CLAIMS 1. Equipment for removing, in the event of fire, fumes and noxious gases (12) from a tunnel (2), characterized by the fact that it comprises at least vehicles (3), located under the road surface (4) of the tunnel (2) , designed to remove noxious fumes and gases (12) from the portion of the tunnel (2) having a height from the road surface (4) not lower than a predetermined value.

2. Apparatus as in claim 1, characterized in that said means (3) are adapted to remove fumes and harmful gases (12) from the portion of the tunnel (2) having a height of not less than 2-2.5 meters from the floor road (4).

3. Apparatus as in claim 1, characterized in that the means (3) comprise - at least one compartment (6), located under the road surface (4) of the tunnel (2) at the base of at least one of the piers (5) and connected to the interior of the tunnel (2); - suction means (7), designed to suck in at least one compartment (6) fumes and harmful gases (12) and to discharge them outside; Γ at least one compartment (6) being parallel to the abutment (5) to which it is adjacent and connected with the interior of the tunnel (2) at least in correspondence with said suction means (7).

4. Equipment as in claim 3, characterized by the fact that the at least one compartment (6) is connected with the interior of the tunnel (2) by grids or vents (8).

5. Equipment as in claim 1, characterized by the fact that it also comprises means capable of activating at least the suction means (7) when they detect a fire in the tunnel (2).

6. Apparatus as per claim 5 for removing, in the event of fire, noxious fumes and gases (12) from a tunnel (2) equipped with a fire-fighting system, characterized in that, in the event of a fire, the means of suction (7) are activated at the same time as the fire-fighting system.

7. Equipment as in claim 6, wherein the fire-fighting system comprises a water tank placed in a raised position with respect to the tunnel (2), connected by at least one pipe to at least one manifold fixed to the vault of the tunnel (2) and equipped with nozzles , and a tank, located at a level lower than that of the road level (4) of the tunnel (2) and connected to the tank by at least one pipe, which receives the wastewater from the tunnel (2), the water collected in the tank being pumped into the tank by means of said at least one pipe, characterized in that the wastewater from the tunnel (2) is collected through Γ at least one compartment (6) located under the road surface (4) of the tunnel (2).