A plugging device and plugging structure for an underwater water intake and drainage outlet

Abstract

The invention provides a plugging device and a plugging structure for an underwater intake and drainage port. Through the hinged cooperation between the lower clamping plate and the lower positioning pin, the upper clamping plate and the upper positioning pin, and the hinged connection between the upper clamping plate and the hydraulic cylinder, the underwater The sealing device of the intake and drainage outlet can be limited to the drainage pipeline, and the sealing pressure of the sealing device of the underwater intake and drainage outlet and the intake and drainage outlet is loaded on the intake and drainage outlet through the hydraulic system, realizing a safe and reliable water stop effect, realizing It achieves the effect of automatically closing the intake and drainage outlets underwater without relying on personnel, and realizes the long-term sealing effect of the intake and drainage outlets with the help of the pressure maintaining function of the hydraulic system. In addition, technicians only need to stand on a safe operating platform, and with the help of a special lifting system, multiple monitoring devices, end touch sensors and underwater electric walking system, they can realize the automatic sealing function of underwater intake and discharge outlets.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower, and in particular relates to a plugging device and a plugging structure for underwater intake and drainage outlets. Background technique [0002] In water conservancy and hydropower projects, thermal power projects, mining projects or port and navigation projects, more water supply and drainage systems are designed to meet the water and drainage needs of equipment and users. Underwater, in order to meet the needs of the suction and safe operation of the water supply equipment, or to meet the needs of a certain water level drop, so as to avoid air entering the pipeline. In the past, the maintenance and disassembly of the first maintenance valve on the pipeline after the intake and discharge outlets of many projects were realized by setting steel gates at the intake and discharge outlets, and the steel gates were closed to cut off the external water source. The gates, the ...

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Problems solved by technology

Usually, the water intake and drainage outlets of these projects are relatively large in scale and size. At the same time, relatively convenient traffic conditions and layout conditions need to be set up. The project can invest a relatively large investment, but it is not necessarily the case for water intakes with relatively small diameters. Suitable, if the water intake is arranged in a deep underwater position, it will be more difficult to achieve

[0003] Although most of the equipment maintenance in previous projects needs to be realized by closing the steel gate, due to the limitation of layout conditions, it is impossible to install the necessary equipment and valves of the steel gate isolation maintenance system at the intake and drainage outlets, and there are still relatively many projects for water supply and drainage The first valve or equipment behind the intake and drainage outlets of the system cannot be repaired

In some projects, a temporary cofferdam is set up around the water intake to meet the needs of blocking the water intake, but the price paid is very high, requiring a lot of manpower, material resources and energy, and it takes a long time. The equipment in the intake and drainage After the overhaul is completed, it needs to be demolished by blasting, which may endanger the operation safety of the intake and drainage outlets

The sealing of some intake and discharge outlets relies on professional divers to dive into the water, and connect the plug to the water intake to realize the sealing of the intake and discharge outlets. Due to the unknown situation underwater, the vision is relatively poor, and there is no one to rely on for underwater operations. facilities, the operation is difficult, and there is a certain water pressure, which brings a relatively large risk to divers when they work underwater, and may even easily cause personal injury.

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