Classifications

• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
  • E03B9/00—Methods or installations for drawing-off water
  • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
  • E03B9/08—Underground hydrants
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
  • B05B15/70—Arrangements for moving spray heads automatically to or from the working position
  • B05B15/72—Arrangements for moving spray heads automatically to or from the working position using hydraulic or pneumatic means
  • B05B15/74—Arrangements for moving spray heads automatically to or from the working position using hydraulic or pneumatic means driven by the discharged fluid

Definitions

• the fire-extinguishing procedure foresees to limit the property and people damages, first of all trying to circumscribe and prevent it from spreading and making k more difficult to extinguish.
• the fuel depots or refineries are equipped with a fire-fighting system, but the blast caused by the fire explosion could put them out of use.
• an additional fire-fighting system consisting in a telescopic hydrant
• the water or the fire fighting liquid causes the up thrust of the telescopic hydrant (1), which begins to rise up and extinguish the fire inside the flames.
• Meantime other telescopic hydrant (1) can be used for cooling the tanks walls that has not yet been affected by the flames.
• a further application of this device is to the reduction of pollution gases in the atmosphere.
• the telescopic hydrant (1) allows to clear the air pollutant particles simply by spraying water into the environment surrounding the hydrant. In this way you reach a "rain effect” that "wash” the atmosphere by removing the contaminant particles.
• the best place where the telescopic hydrant (1) should act as anti-pollution tool may be the buildings roof. This choice is justified by the fact that the roofs are designed to evacuate the water rain through the water exhaust drains, and the ice that could be produced during winter time would not cause roads and persons accidents, and in any case a roof is designed to support the snow or ice weight.
• the use of the telescopic hydrant (1) avoids the problem of impacting the town skyline because it will be used by night, reducing the visual impact, while during the day the water flow can be stopped and for gravity the hydrant retracts in its own underground container.
• the figure 1 shows the telescopic hydrant (1) in the outside view.
• the structure looks like a cylinder (in the cylindrical version, but it is also possible to create a polygonal version of the hydrant, that avoids the rotation of the internal components during the extension and allows the water jet to be pointed in a specific direction) that come out from the ground level completely (anti-pollution mode) or partially (fire mode).
• the fire mode the top of the structure that emerges from the ground level is made by the outer case lid and by all the inner elements tops.
• the Figure 2 shows from the top the telescopic hydrant (1) drawing in the six-elements version of the fire mode.
• the anti-rotation wings (2) are designed to prevent the outer structure rotation, as this movement would cause instability to the structure and damage the contact point between the hydrant and the pipe that supply water to the structure. In the antipollution mode the anti-rotation wings (2) are not provided because it is sufficient the anchorage of the structure base to the building.
• the connection (3) indicates the installation point to connect the hydrant flange to the water supply pipe
• the connection (4) indicates the installation point for the flange which connects the valve to the water drain that would remain after its use. It is important to provide a water drain system in order to avoid the water freezing during the at-rest-time that could jam the works. The drainage can also be forced by using a pump.
• the Figure 3 shows the cross section of the innermost element top.
• the detail 7 is positioned under the head (5) of the telescopic hydrant (1) and represents the body that diverts the water flow towards the openings (8) of the head (5), that is attached to the innermost element (6) of the telescopic hydrant (1) through the threads (10) and (11) of the detail 9.
• the telescopic hydrant consists of several elements , designed with the logic to respect the condition in which the lager diameter element includes all the other ones. As indicated in the detail 12 shown in Figure 5, the outer diameter of each element must be less than the inside diameter of the element that encloses itself, in order to allow the components to slide one within each other.
• the detail 12 constitutes the area in which are made the details 13, 13a, 14, 14a, 15, 16 and 17 shown in Figure 6:
• the detail 14 shows the thread of the component that is not integral with the inner element, that is screwed at the thread (13) placed at the inner element lower part;
• the detail 14a shows the wing of the component that is not integral with the inner element that is screwed to its bottom, the wing (14a) limits inferiorly the volume of the seal (16);
• the detail 15 shows the wing of the component that is not integral with the inner element, that is screwed to its bottom part, the wing (15) limits inferiorly the stroke of the inner element and creates a support for the inner element when the telescopic hydrant is at rest;
• the detail 17 shows the wing of the elements' top that limits the stroke of the inner element at the top.
• the Figure 7 shows the detail 18 that highlights the area where the details 19, 20, 20a and 20b are made and represent the element by which you can extract all the extendable structures of the underground (or aboveground) outer case (21).
• the Figure 8 shows the exploded view of the detail 18:
• the detail 20 shows the wings created on the component that is not integral with the outer case (21) and that is screwed to the top of the outer case (21) in order to create continuity of the visible surface when the telescopic hydrant is at rest;
• the detail 20a shows the thread on the component that is not integral with the outer case (21) and that is screwed to the top of the outer case (21);
• the detail 20b shows the wings created on the component that is not integral with the outer case (21) that limits the stroke of the inner element at the top.
• the figure 9 shows the support area (22) which the entire extended structure rests on during its at rest time.
• the support area (22) is lifted from the bottom (24) of the outer case (21) through the supports (23) (shown in Figure 11); their function is to keep separate the extending structure from the bottom (24) to avoid that any stagnant water can freeze and then jam the bottom elements of the extended structure (24).
• the figure 10 shows the flow diverter (26).
• the element (26) which is the flow diverter made by two vertical walls (27) and a curved plane (28).
• the use of flow diverter allows to take advantage of all the thrust of the water supplied by the water system connected to the detail 3, the reason is that the detail 26 is positioned at the same axis of the conduct of the detail 3.
• the functioning of the telescopic hydrant (1) requires a source of pressurized water (typically from the municipal waterworks) that supply it.
• a source of pressurized water typically from the municipal waterworks
• the valve located on the pipe which feeds the telescopic hydrant (1) it is allowed the water to reach the structure, to fill the inner body of the hydrant and to pressurize the occupied volume.
• the pressure is simply the ratio between the force and the surface on which it is applied, in a container under pressure the force due to the pressure acts in all directions and on all the container inner walls.
• the inner water that flows inside the structure also chills the structure body because it is in contact with the inner surfaces of the telescopic hydrant (1) walls; the consequence is that the telescopic hydrant (1) can work even if it is wrapped up by the flames or exposed to heat sources.
• the thickness of the material used to make the telescopic hydrant (1) is thin and sufficient to enable the structure to stand up; for this reason the energy, transmitted from the fire to the hydrant by radiation and convection, is transmitted to the water by conduction through the hydrant wall.
• a design feature is applied to polish the exterior surface as a mirror and increase the energy reflecting power; the telescopic hydrant (1) circular cross-section reduces the view factor versus the heat sources.
• the telescopic hydrant (1) uses the thrust provided by the water as a propulsion system, this allows to preserve the structure when there is a pressure drop and hence a loss of flow, that would cause a cooling reduction of the structure.
• the result is an excessive expansion of the hydrant components that leads to a components deformation in the long run.
• the pressure drop causes a decrease of the upward pressure; the consequence is that, by gravity effect, the telescopic hydrant (1) retracts and reduces the heat exposure that could damage it. Once the optimum pressure has been restored, the telescopic hydrant (1) comes back to service without any type of damage.
• Fig. 1 telescopic hydrant external layout in the anti-pollution mode A) and fire mode B)
• FIG. 2 top view of the telescopic hydrant in the fire mode with the six-elements version
• Fig. 12 outer case, central and innermost element of the hydrant
• FIG. 13 bottom section layout of the telescopic hydrant with six-elements version at rest mode
• FIG. 14 upper section layout of the telescopic hydrant with six-elements version at rest mode
• Fig. 15 connection points and external telescopic hydrant layout in the fire mode with six- elements version at rest

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)
• Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
• Centrifugal Separators (AREA)
• Lubricants (AREA)
• Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

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Cited By (1)

Family Cites Families (4)

• 2010
  • 2010-07-28 IT IT000011A patent/ITPV20100011A1/it unknown
• 2011
  • 2011-07-21 WO PCT/IT2011/000260 patent/WO2012014243A2/en active Application Filing

Non-Patent Citations (1)

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