SU1216280A1 - Automatic gate of hydraulic structure - Google Patents

Description

The invention relates to hydraulic engineering and can be used to create irrigation channels and drainage systems in a lined canal, chutes, and drainage systems, with which the channel is flushed from sediments.

The purpose of the invention is to increase the reliability of the operation of the automatic shutter by reducing the likelihood of jamming of the locking element.

FIG. 1 shows a longitudinal section along the axis of the watercourse} in FIG. 2 - view L in FIG. 1 in FIG. 3; section B-B in FIG. one.

On the flybet 1 between the arms 2, there is a shut-off element made in the form of an elastic panel 3. In the bases x 2 on the hinges 4 a U-shaped frame 5 is installed, which has levers 6 with a counterweight 7 fixed to the frame 5 at its obtuse angle. plane. The cloth 3 is attached by the front edge 8 to the flybet 1 and the structures 2, and the upper edges to the sides 9 of the U-shaped frame 5. Before the panel 3 on the corrugated sleeve 10, an ejector deflector 11 with a float is installed with the possibility of vertical movement 12. In the flutebete 1, under the panel 3, holes 13 are made, connected by channels 14 in the flutebete 1, collector 15 and corrugated sleeve 10 to the ejector 11. Position 16 denotes the extreme positions of levers 6, and position 17 denotes the position of the counterweight 7 on the levers 6

The float 12, as a result of the deformation of the corrugated sleeve 10, follows the water level in the watercourse, as a result of which the ejector deflector 11 attached to it under the water level is constantly in the zone of greatest flow velocities. With a high water level, when the flow rate in the watercourse is greater than the maximum allowable non-filling velocity, which ensures the transportation of bottom and suspended sediments, the flow of water, a helium ejector deflector 11, creates a vacuum (reduced pressure) in its cavity, which is transmitted through the collector 15 a system of drainage channels 14 draining the surface of the 1b flut-beta

Thus, the static pressure of water on the surface of the flybet 1

under the elastic cloth j appears MeHbuniM, than the static pressure in the water flow over the elastic cloth 3.

Under the action of the pressure difference, the elastic sheet 3 is pressed against the surface of the flybet 1, and the U-shaped frame 5 assumes position a, and the levers 6 rest on the upper support 16, the vacuum generated by the ejector defdeter 11 and, consequently, the pressure difference above and below the elastic panel 3 decreases with decreasing flow velocity. The position of the counterweight 7 on the levers 6 is chosen and fixed by the latch 17 so that when the flow rate is reduced to the minimum acceptable non-stranded

 the speed of the torque relative to the hinges 4 created by the pressure difference above and below the elastic panel 3 was balanced by the torque created by the counterweight 7. When the flow velocity becomes less than the minimum acceptable non-core velocity that corresponds to the water level in the watercourse; at mark with, under the action

the moment created by the counterweight 1, the U-shaped frame 5 begins to rotate from position to position b, and the elastic panel 3 opens from the surface of the flybet 1, as a result of which the pressure difference above and below the elastic panel 3 and the torque generated by the pressure difference decreases sharply. As a result, the U-shaped frame 5 assumes the position b, with the levers 6. they rest on the lower stop 16, and the elastic panel 3 blocks the water flow.

As water accumulates in the upper reach, its level rises from the mark to the cJ mark, and in the lower reach drops from the mark to the S mark. When the torque generated by the level difference in the upper and lower tails exceeds the torque generated by the counterweight weight 7, the U-shaped frame 5 begins to rotate from position b to position 3. As they turn as a result of an increase in the mass of water on the elastic panel 2, there is a rotating moment created by the difference in the levels in the upper and lower pools.

increases dramatically, as a result of which the U-shaped frame 5 assumes the position b, and the elastic panel 3 rests on the surface of the fliebuta 1. The flow velocity increases dramatically, which ensures the transport of bottom and suspended sediments, and creates a pressure difference around the ejector deflector 11 Above and below the zlastichesky- jHHM panel 3 presses it to the surface of the flybet 1. As

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VNIIPI Order 967/33 Circulation 642 Subscription Branch PPP Patent, Uzhgorod, Project St., A

reducing the flow rate of the water to the minimum acceptable non-core velocity; the cycle of operation of the device is repeated.

Thus, the proposed device creates a flawed flow regime in which the velocity in the watercourse is greater than the minimum permissible non-filling velocity, which ensures automatic flushing of the watercourse from sediments.

Type A

Claims (1)

HYDROTECHNICAL STRUCTURE SHUT-OFF AUTOMATICALLY mainly for open watercourses containing a plentiful amount of sediment, including a locking element located in the waterway between the abutments of the structure, with a frame installed in the supports on hinges, and a lever with a counterweight, a bench installed in the watercourse in front of the locking element with the possibility of vertical movement , the frame is made U-shaped, and the locking element is made in the form of an elastic panel attached with a leading edge to the ftput and the foundations of the structure and the upper edges sides of the U-shaped frame, wherein in the apron under the locking element is provided with holes connected by the collector with the ejector, and a lever with a counterweight attached to the 'U-shaped frame at an obtuse angle to its plane.