EP2098641A2 - Embout de conduites pour l'irrigation de champs de riz déstiné à la régulation de la hauteur d'eau - Google Patents

Embout de conduites pour l'irrigation de champs de riz déstiné à la régulation de la hauteur d'eau Download PDF

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Publication number
EP2098641A2
EP2098641A2 EP09154379A EP09154379A EP2098641A2 EP 2098641 A2 EP2098641 A2 EP 2098641A2 EP 09154379 A EP09154379 A EP 09154379A EP 09154379 A EP09154379 A EP 09154379A EP 2098641 A2 EP2098641 A2 EP 2098641A2
Authority
EP
European Patent Office
Prior art keywords
water
mouthpiece
pipe
discharge
product
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.)
Withdrawn
Application number
EP09154379A
Other languages
German (de)
English (en)
Other versions
EP2098641A3 (fr
Inventor
Roberto Dissegna
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.)
Ediltravet Srl
Original Assignee
Ediltravet Srl
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 Ediltravet Srl filed Critical Ediltravet Srl
Publication of EP2098641A2 publication Critical patent/EP2098641A2/fr
Publication of EP2098641A3 publication Critical patent/EP2098641A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B13/00—Irrigation ditches, i.e. gravity flow, open channel water distribution systems
    • E02B13/02—Closures for irrigation conduits

Definitions

  • the present invention relates to the sector of water basins, such as for example rice fields, for which it is necessary to control the level of water inside them and carry out transfer thereof between one rice field and another or one water basin and another that are adjacent but are at different heights.
  • the animals that generally live in the proximity of rice fields usually dig their own burrows in areas corresponding to the aforesaid products made of cement, since they are attracted by heating of the cement itself due to solar radiation. Consequently, said tunnels create connections between the two rice fields that are flooded by the water that traverses them, and in this way, there starts a process of erosion of the bank, which leads rapidly to its yielding.
  • the main purpose of the present invention is to overcome all the problems listed above by providing a product for discharge and transfer of water, and regulation of the level of the water, preventing erosion of the banks in an area corresponding to the product itself.
  • the discharge mouthpiece 1 forming the subject of the present invention is a prefabricated product made of vibrated reinforced concrete in order to increase its mechanical resistance as compared with products directly cast in situ and improve the characteristics of resistance thereof to atmospheric agents.
  • the product that is described is provided with a cavity C, preferably with substantially trapezial horizontal section, which is specifically designed to contain and confine therein the turbulent movements of water that are formed during its passage from the static situation within the rice field to the dynamic situation when it flows within the discharge pipe T that connects the rice field or water basin with the adjacent one at a lower level.
  • a further peculiar characteristic of the invention consists in the fact that provided in the rear wall 2 of the product 1 that is located on the side of said cavity C opposite to the one from which the water of the rice field or water basin arrives is a hole F for said discharge pipe T.
  • Said hole F is preferably tapered so as to enable correct positioning of a purposely provided sealing gasket G between the pipe T and the hole F, which is provided with a circumferential flange 3, which is pressed by the pipe T itself against the internal tapered surface of the hole F (see the enlarged detail of Figure 4 ).
  • This characteristic is particularly useful in so far as, thanks to said arrangement, the very thrust of the water that flows in the discharge pipe T concurs to improving the seal of the gasket G.
  • the smaller diameter of the tapered hole F is situated at the rear and is just a little larger than the external diameter of the discharge pipe T, but such as to prevent passage of the sealing gasket G.
  • the discharge pipe T it is advisable for the discharge pipe T to be inserted in the mouthpiece after being provided with the external circumferential gasket G, by being slid from the inside to the outside (as indicated by the arrow), and then fitted and fixed in place with the aid of a thick wooden plank, which is rested at the end of the pipe and is struck with a hammer to jam the gasket G properly inside the hole F present in the rear wall 2 of the product 1 itself.
  • a further advantage of the invention lies in the fact that the use of an externally corrugated discharge pipe T eliminates the problems caused by animals that dig their own burrows along said pipe: in fact, the corrugated surface hinders formation of tunnels in a longitudinal direction with respect to the pipe (i.e., transverse to the bank), thus eliminating the possibility of the burrows setting two adjacent rice fields or water basins in communication.
  • the product 1 comprises a main body having a cross section substantially with the shape of a symmetrical (isosceles) trapezium, open in an area corresponding to the major base set on the front side 5 of said product 1.
  • the base resting on the ground of said main body is closed.
  • the front side 5 of the product 1 facing the rice field can be closed with planks preferably made of wood, via which it is possible to regulate also the level of the rice field or of the water basin.
  • the internal surface 4 of the bottom base is positioned preferably 20 cm underneath the ditch for discharge of the water of the rice field: in this way, to empty out all the water, it is not necessary to remove the bottom wooden plank, and the water that flows out does not have the possibility of passing underneath the product 1, and any possibility of erosion of the bank underlying the invention is thus prevented.
  • two vertical side channels S are provided, inserted within which are the wooden planks for closing the discharge mouthpiece 1 and/or for regulating the depth of water in the rice field.
  • the corrugated external surface of the discharge pipe T facilitates anchorage of said pipe to the soil of the bank in which the product 1 is installed.
  • top rings 6 to facilitate lifting and movement of the product 1: said rings 6 are preferably positioned in a way symmetrical with respect to the vertical plane of symmetry of the invention and are preferably set in an area corresponding to the centroidal plane perpendicular to the plane of symmetry.
  • a variant of the invention illustrated in Figure 3 and in Figures 7 to 12 , envisages a top slab 7 (also referred to as "safety slab") for closing the cavity C, from which there departs the discharge pipe T, designed to facilitate passage of the operators who walk along the bank and have to climb over the discharge mouthpiece 1.
  • Said top slab 7 is preferably laid in a single piece with the prefabricated product 1, but could also be removable and is usable for raising the bank above the discharge mouthpiece 1 described herein.
  • said hoisting rings 6 are preferably housed in purposely provided recesses so as not to project from said top slab 7 in order not to hamper passage of the operating staff.
  • the front side of the safety slab 7 will have a central recess that traverses its entire thickness.
  • This recess has the purpose of facilitating the operators when they have to insert/remove the wooden planks, without thereby hurting their hands during sliding of the planks themselves in an area corresponding to the slab 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Sewage (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
EP09154379A 2008-03-06 2009-03-05 Embout de conduites pour l'irrigation de champs de riz déstiné à la régulation de la hauteur d'eau Withdrawn EP2098641A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBI20080003 ITBI20080003A1 (it) 2008-03-06 2008-03-06 Bocchetta di scarico e livello acqua per risaie

Publications (2)

Publication Number Publication Date
EP2098641A2 true EP2098641A2 (fr) 2009-09-09
EP2098641A3 EP2098641A3 (fr) 2009-11-04

Family

ID=40292618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09154379A Withdrawn EP2098641A3 (fr) 2008-03-06 2009-03-05 Embout de conduites pour l'irrigation de champs de riz déstiné à la régulation de la hauteur d'eau

Country Status (2)

Country Link
EP (1) EP2098641A3 (fr)
IT (1) ITBI20080003A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2130936A (en) * 1938-03-18 1938-09-20 Thompson James Scott Constant flow spillway
US3410094A (en) * 1966-06-17 1968-11-12 Ned R. Shelley Distribution lateral for an irrigation ditch
US4024717A (en) * 1975-06-06 1977-05-24 William David Hudson Folding aluminum rice and irrigation box
CA1111264A (fr) * 1979-12-07 1981-10-27 Peter R.B. Ward Bassin dissipateur de turbulence au pied d'un debit d'eau en chute

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2130936A (en) * 1938-03-18 1938-09-20 Thompson James Scott Constant flow spillway
US3410094A (en) * 1966-06-17 1968-11-12 Ned R. Shelley Distribution lateral for an irrigation ditch
US4024717A (en) * 1975-06-06 1977-05-24 William David Hudson Folding aluminum rice and irrigation box
CA1111264A (fr) * 1979-12-07 1981-10-27 Peter R.B. Ward Bassin dissipateur de turbulence au pied d'un debit d'eau en chute

Also Published As

Publication number Publication date
EP2098641A3 (fr) 2009-11-04
ITBI20080003A1 (it) 2009-09-07

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