How does it work? | How does the shipping lock


2018-03-15 16:30:10




1Like 0Dislike


How does it work? | How does the shipping lock

The First shipping lock, which was carried out alternating the alignment of the water level, was invented by Qiao, Value 984 year and built on the Great Chinese channel. The gateway was a straight section with a length of 76 meters, which was bounded on two sides by a gate. They were made of wooden boards and moved vertically. The coast gateway was strengthened, and over it was placed a canopy. During the 11th century the builders erected the gateways along the entire length of the Grand canal of China. How does the modern shipping gateway? This was in today's issue!

So the gateway is a hydraulic structure on navigation and waterways, which ensures the transfer of ships from one water basin to another with different levels of water in them. On both sides of the gateway are restricted by gates or gates, between which is a sealed chamber with adjustable water level. Camera any gateway has dimensions sufficient to contain one or more vessels. Thus, unlike slipways, gateway camera cannot change its position or dimensions. However, the level of water in it can change.

The Gate are metal panels, located on both ends of the camera. They are used for transmission and discharge of vessels and seal the chamber during the transfer of ships. In approach channels are provided with a safe environment for the movement and berthing of vessels at the quay walls.

One of the most important in the design of gateways is the tap device. It is designed for filling and emptying the chamber. Typically, this device uses flat panel shutter. At major gateways can be used special pumps.

The Principle of operation of the gateway is as follows: first, open the entrance gate and the ship goes inside the camera and is moored to the bollards. Then the entrance gate is closed, and opens the bypass valve, causing the fall or rise of the water level in the chamber with her ship. This is achieved by transfusion or by pumping the water from an adjacent tank in the direction of the route of the vessel. When the water reaches the required level, equal to that available for the output of the gate cameras, the gate opens and the ship leaves the gateway.

The Process of passing a vessel through the gateway lasts usually from 10 to 20 minutes depending on the size of the camera and the water level difference. When locking alternate the direction of transmission of the vessels: after the vessel proceeding downstream has completed the lockage, in a cell with already low level of water enters the ship moving in the opposite direction. Thus it is not necessary to do unnecessary filling or draining the water from the chamber.

If necessary, overcome a significant pressure differential or water build multi-gateways. They consists of several successive gateways. In this case, the ship is moved alternately along the chain of cameras. In China, the world's largest hydroelectric Three gorges dam built five-chambered gateway. And in the UK on channel Avon built a 16-chamber! These gateways are called "ladders".



229-meter "Valkyrie" will be the largest yacht in the world

All of us from childhood to present yachts as small white ships, parts of which are neatly stacked on top of each other like a wedding cake. Designer Calhoun Park tired of this and developed a plan to create a huge yacht "Valkyrie", which will make a...

#video | How a tiny embryo turns into a beautiful living organism?

#video | How a tiny embryo turns into a beautiful living organism?

the Animal world is beautiful and varied, and the deeper one looks into the normal processes, the more amazing types him open. Thanks to new technologies, look at these beauties not only scientists, but also ordinary people. The opportunity, for exam...

Scientists have developed artificial skin with

Scientists have developed artificial skin with "superhuman" capabilities

a Group of American and canadian engineers, chemists and biologists from Western Connecticut state University and the University of Toronto have developed a new kind of sensor that gives an artificial skin can feel pressure, vibration and even magnet...

Comments (0)

This article has no comment, be the first!

Add comment

Related News

Fly Elephant: first flying 3D printer

Fly Elephant: first flying 3D printer

it would Seem than can surprise manufacturers of 3D printers, even if liquid metal can be used for printing? But the Chinese company DediBot all the same managed to do something unique: flying a 3D printer Fly Elephant. Well, if y...

How does it work? | Rail cable car

How does it work? | Rail cable car

last week we told you about how to operate a gondola, but today we will focus on a different type of cable cars — rail. Vehicles that carry passengers on them or the goods are called funiculars. First use of the funicular as...

How does it work? | Cable-cableway

How does it work? | Cable-cableway

In 1834, the German engineer albert Vogts invented the metal rope of intertwined steel wires. And after three decades in the North of Switzerland near Schaffhausen has introduced the world's first cable car for passengers. With it...