RU2044828C1 - Head feed system of navigable sluice - Google Patents

Abstract

FIELD: hydraulic structures. SUBSTANCE: system provides overflow through upper part of gates 1 as gates 1 descends. In so doing, water jet strike suppression screen surface 4 and beam 5 of suppressing, and enters vessel chamber 2. Besides, water flow enters opening 11, that is formed as gate 1 descends in niche 8, strikes wall 9 and also enters vessel chamber 2. EFFECT: such a structure of the head system decreases time to handle gate 1 and length to fill vessel chamber 2. 2 dwg

Description

 The invention relates to hydraulic structures and is intended to fill the lock chamber.

Known are the head power systems of locks containing the main lifting and lowering gates connected with the drive and equipped with a jet-visor in the lower part, a falling wall with aeration pipes arranged in it, a damping screen and distribution beam beams mounted on vertical gobies [1, 2]
The head power system of a dry-water lock described in [2] works as follows. When the chamber is filled, the lifting and lowering gates rise above the threshold to a height of 2-3 m and, with the help of a beam-guiding visor, direct water to the damping screen. Under the damping screen, and then through the beams of the distribution grid, held by the gobies, water enters the ship’s chamber. After filling the ship’s chamber, the gates descend into a niche located between the fall wall and the damping screen.

 However, to ensure the necessary hydraulic conditions when filling the chamber, the lifting and lowering gates must have a directional visor directing the flow to the damping screen, which increases the load on both the gates and their lifting mechanism. To fill the lock chamber and enter (or exit) the ship, the gate must first rise above the threshold and then descend into a niche, which increases the dimensions of the lock head in height and the maneuvering cycle of the gate, and, consequently, the time of ship passage. The seal on the gate is constantly in the flow, which leads to its rapid destruction. In addition, this power system requires the installation of aeration pipes installed in the wall of the fall and providing air supply under the stream in order to break the vacuum.

 In the present invention, in order to eliminate the aforementioned drawback, a head power system comprising a drop wall, a damping screen, distribution grid girders with gobies and main lifting and lowering gates with a drive installed with the possibility of lowering into a niche formed by the falling wall and damping screen is made as follows .

 Lifting and lowering gates have pressure covering, inclined towards the side of the fall wall, and smoothly streamlined top. Such a constructive solution ensures the filling of the vessel’s chamber through the top of the lowering gate and through the hole formed by the pressure casing and the fall wall when lowering the gate into the niche, with subsequent quenching of the flow energy on the falling wall, the bottom of the chamber, the outer surface of the damping screen or other damping structure, damping beam and distribution beam beams.

 In FIG. 1 shows the proposed device. It consists of the main lifting and lowering gates 1, perceiving the action of a static water pressure and separating the upper pool from the ship’s chamber 2, threshold 3, quenching screen 4, quenching beams 5, horizontal beams of the distribution grid 6, held by the bulls 7, niches 8 located between wall 9 fall and damping screen 4, and the seal 10.

 The blanking beam 5 is made in the form of a vertical wall and is mounted on the bulls 7 above the beams of the distribution grid. In this case, the quenching beam serves not only to quench the flow energy, but also to exclude direct exit of the jet into the ship’s chamber.

 In dynamics, the lifting and lowering gates 1 from the closed position shown in FIG. 1 by a dotted line, they are lowered into the niche 8 formed by the drop wall 9 and the damping screen 4. The flow enters the hole 11 and, having hit the fall wall 9, the bottom 12, through the hole 13 and the beam of the distribution grid 6 enters the ship’s chamber 2.

 As the gate descends, water overflows through the upper part of the gate, which is made in a smoothly streamlined form along the profile of the flowing jet. The jet hits the surface of the damping screen 4, the damping beam 5 and, having connected with the flow moving from the wall of incidence, enters through the distribution grid 6 into the lock chamber.

 The supporting casing of the lifting and lowering gate can be concave from the upstream side, as shown in FIG. 2. The designation and principle of operation are as described above.

In comparison with the known, the proposed technical solution allows:
reduce the time of passage through locks, since the lifting and lowering gates for filling the ship’s chamber are not raised up, but immediately lowered into a niche, which reduces the maneuvering cycle of the gate, as well as due to the greater flow of water entering the ship’s chamber when it is filled;
reduce the height of the upper head and the length of the rod of the hydrocylininid, since the range of movement of the gate is reduced;
to exclude the jet visor and thereby reduce the weight of the gate and the load on the lifting mechanism;
provide resource-saving by reducing the material consumption of the gate, the safety of compaction and energy saving.

Claims (1)

 HEADING SYSTEM FOR THE NAVIGATION GATEWAY containing a falling wall, a damping screen, horizontal beams of the distribution grid located vertically in the initial part of the ship’s chamber, and lifting and lowering gates with a drive installed with the possibility of lowering into a niche formed by the falling wall and damping screen, characterized the fact that the ship’s chamber is equipped with a blanking beam made in the form of a vertical wall and installed above the distribution grid beams, while the lifting and lowering gates are made with smoothly streamlined top, and pressure head sheathing is made concave from the side of the upstream or inclined towards the side of the fall.

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