Why is the torch not afraid of water, and why the Olympic torch is not extinguished in water

The Beijing Olympic torch was inspired by the "auspicious clouds" pattern of "symbiosis and harmony". The cultural concept of Xiangyun has a time span of thousands of years in China and is a representative symbol of Chinese culture. The design of the torch shape is inspired by traditional Chinese paper scrolls.

Paper is one of the four great inventions of China, which came to the West through the Silk Road. Human civilization spread with the advent of paper. The use of lacquer red on the torch from the Han Dynasty makes it clearly different from the torch design of the previous Olympic Games, and the contrast of red and silver colors produces eye-catching visual effects, which is conducive to various forms of ** communication.

The upper and lower proportions of the torch are evenly divided, and the auspicious cloud pattern and three-dimensional relief craft design make the whole torch elegant and gorgeous, and the connotation is heavy.

The Beijing Olympic torch has reached a new level of technical height in terms of combustion stability and adaptability to the external environment, and can keep burning in strong winds of 65 kilometers per hour and heavy rain of 50 millimeters per hour. In terms of technology, it is designed with thin and high-quality aluminum alloy and hollow plastic parts, which is very lightweight. The lower half is sprayed with high-touch plastic paint, which is comfortable to the touch and not easy to slip off.

The Beijing Olympic Games torch is a product of China's independent design and development, and has complete intellectual property rights.

The fuel used for the Beijing Olympic torch is propane, which is a cheap and commonly used fuel. Its main components are carbon and hydrogen, and after combustion, there is only carbon dioxide and water, and there are no other substances, which will not cause pollution to the environment.

The Beijing Olympic torch is 72 centimeters long, weighs 985 grams, burns for 15 minutes, has a flame height of 25 to 30 centimeters at zero wind speeds, and can keep burning in strong winds of 65 kilometers per hour and heavy rain of 50 millimeters per hour.

Fuel is the key to the torch's ability to burn underwater, and scientists have tried various fuels and conducted various experiments, (at first it didn't work very well, and they even had plans to cancel the water relay at one point.) Eventually, they found a fuel made from a mixture of butane and propane that would not only burn underwater, but also not pollute the water.

The torch is also subjected to different pressures at different depths below the surface of the water, especially at about 10 meters underwater, which is 10 times greater than under the water.

After many underwater tests by divers, it was finally successful.

Thus, for the first time in the history of the Olympic torch relay, an underwater relay appeared. The torch relay of the Olympic Games not only successfully solved the problem of the torch relay underwater, but also broke the iron law of incompatibility between fire and water.

Because during the relay of the Olympic torch, it may face various unexpected weather conditions, and strong winds and heavy rain will severely test the torch's burning technology.

In order to provide a reliable combustion system for the torch, the Aerospace Science and Industry Group contributed a reliable "core" to the Olympic flame. The combustion system of this "core" consists of three parts: burner, pressure stabilizing device and gas tank. The burner adopts an innovative dual-flame concept, i.e. a pre-combustion chamber and a main combustion chamber.

For the first time in the design of the Olympic torch, the flame of the pre-combustion chamber will ensure that the flame of the torch will not be extinguished, even in windy weather, the pre-combustion chamber buried under the top of the torch will not be affected. The flame derived from the main combustion chamber will make the flame of the whole torch burn brightly, ensuring the visual effect of the torch.

The Beijing 2008 Olympic torch has reached a new level of technical height in terms of combustion stability and adaptability to the external environment, and can keep burning in strong winds of 65 kilometers per hour and heavy rain of 50 millimeters per hour.

There are two combustors! One is extinguished, and the other can be ignited!

The bright yellow flame does not rise or fall.

The design of "Xiangyun" uses a pressure regulator valve, which is used to maintain the pressure of the gas, so that the flame height can be stabilized.

Unlike the mixed fuel used in previous Olympic torches, the fuel used in the Beijing 2008 Olympic torch is propane. It is a cheap and commonly used fuel, and it has a wide temperature range. Propane combustion only forms water vapor and carbon dioxide, no other substances, and will not cause pollution to the environment, which meets the requirements of the Green Olympics.

The flame of propane gas combustion is bright yellow, which is easy to identify and meet the needs of television broadcasting and photojournalism.

Fuel stability without insulated car**.

When the fuel temperature of the flare reaches 20, the propane fuel in the fuel tank will produce a pressure of about 10 atmospheres, while the fuel tank of the sturdy "Xiangyun" can withstand 150 atmospheres. Therefore, there is no need to worry about the flare fuel leaking due to excessive pressure. When the outside temperature is as low as -20, the atmospheric pressure generated by propane fuel is only 2, how to ensure the continuous energy supply of the flare at such a low atmospheric pressure?

Regulators and return pipes will solve this problem.

In the past, the Olympic torch used a mixture of fuels, which needed to be equipped with an insulated car to maintain the temperature and pressure of the fuel, but the Beijing 2008 Olympic torch used a heat recovery pipe to heat the fuel from the heat generated by the torch burning. In this way, the fuel tank does not need the help of an external heating device to generate enough pressure on the fuel to support the flare.

The falling torch continued to burn in the rain.