Gate chamber of horizontal gate of high water head ship lock and operation control method of horizontal gate

Abstract

The invention relates to a gate chamber of a horizontal gate of a high water head ship lock and an operation control method of the horizontal gate, and belongs to the technical field of hydraulic engineering. The gate chamber is used for placing a gate body arranged on an upper gate of the ship lock, and includes gate walls arranged at the upstream and the downstream of the gate body and a first gate chamber and a second gate chamber oppositely arranged on two sides of the gate head of the gate body; the first gate chamber and the second gate chamber are respectively formed by projecting the gate walls to two sides; the first gate chamber is used for accommodating the parking of the gate body when the gate body is totally opened; the second gate chamber is used for supporting the gate head of the gate body when the gate body is closed to stop water; the ratio of the widths of the first gate chamber and the second gate chamber to the thickness of the gate body is 1.9-2.2: 1.2: 1; the ratio of the lengths of the first gate chamber and the second gate chamber to the width of the gate body is 1.5: 1.3: 1; and when the gate body is totally opened and parked in the first gate chamber, the ratio of the gap distance length between the first gate chamber and the gate chamber edge wall of the first gate chamber to the thickness of the gate body is 0.9-1.2: 1. The gate chamber and the gate operation control method have the advantage of capability of reducing hydrodynamic drag moment.

Description

Technical field [0001] The invention relates to a gate storehouse of a ship lock and a gate operation control method, belonging to the technical field of water conservancy engineering. Background technique [0002] In recent years, a number of single-stage ship locks planned to be built on rivers in western my country are all high-head ship locks. Due to the narrow and large drop characteristics of western mountain rivers, such ship lock chambers are of "narrow and high" type. [0003] Choosing the appropriate ship lock gate type plays a key role in ensuring the safe, stable and efficient operation of the ship lock. A single gate has the characteristics of a gate with a gate and a plane gate. For a ship lock with high water head and relatively small chamber width, compared with a gate under the same conditions, the "height-to-width ratio" of the gate body can be significantly reduced. While satisfying the torsional rigidity of the gate, it is conducive to the manufacture and insta...

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Problems solved by technology

[0004] However, the applicant found that: 1) The gate hoist of the high water head ship lock adopts a hydraulic direct-connection type, and the piston rod of the hoist is opened and closed at a uniform speed. , peak values ​​of resistance torque appear at the initial stage of start-up and at the end of operation, and the hoist capacity cannot be fully utilized

In addition, due to the special lock wall and boundary conditions of the gate bank, the ship lock gate will make the flow conditions more complicated in the case of large submerged water depth: with the increase of submerged water depth, the water level in the direction of the gate at the initial stage of opening will be raised and the water level in the opposite direction will be increased. The water level difference on both sides of the door body formed by the drop of water level is more obvious, the vortex near the door head is stronger, and the hydrodynamic resistance is significantly increased during the opening and closing process. The unfavorable opening and closing method will greatly increase the burden on the hoist; 2) Due to the narrow cross-section of the gate at the beginning of opening and the end of closing, the main flow is twisted at a large angle, so it is not suitable to use a simple gate similar to the gate. Rectangular door library

At the same time, the layout of the rectangular gate storehouse ignores the unique water flow conditions of the ship lock in the case of a large submerged water depth: with the increase of the submerged water depth, the water level difference formed by the high water level in the forward direction of the gate and the decrease in the opposite direction becomes larger when the gate is opened. Obviously, the strength of the vortex near the head of the gate increases, and the hydrodynamic resistance borne by the gate during the opening and closing process increases significantly, which seriously increases the burden on the gate hoist. challenge

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