The Tokyo Electric Power Company of Japan said on the 16th that almost all the detectors used to detect the insertion state of the control rod of Unit 1 of the Fukushima Daiichi Nuclear Power Plant had been damaged and could not function normally.
According to reports, Unit 1 has a total of 97 control rods, each with a detector installed on it. When TEPCO checked whether the detectors were working properly, it was found that almost all the detectors were damaged. TEPCO believes that because the melted fuel accumulates on the bottom of the pressure vessel of Unit 1, the high temperature generated when the core melts may cause the wires to break or form a short circuit, damaging the detector installed at this location.
TEPCO originally planned to check the condition of the detector to confirm the degree of fuel rod damage and speculate the temperature of the lower part of the reactor, but because the damage of the detector was far beyond expectations, the staff failed to obtain clues. Tepco said it will study other ways to investigate the extent of fuel rod damage.
The control rod is generally made of stainless steel shell wrapped with hafnium or silver indium cadmium alloy and other materials with strong neutron absorption capacity. Its function is to control and adjust the number of fission neutrons in the core of the nuclear reactor to adjust the reactor output power, or in emergency Under the circumstances, the nuclear reaction is quickly stopped to ensure the safety of the reactor.
In today's home decoration market, various types of Curtain Rod connection rods emerge endlessly, providing consumers with a wealth of choices. This article will introduce the different types of curtain rod connection rod and their characteristics in detail to help you better understand the market and choose the product that is right for you.
First, classification by material
1. Iron connection rod: This connection rod is usually made of cast iron or forged iron, which is durable and affordable. However, the iron connection rod may not be aesthetically pleasing and is prone to rust.
2. Stainless steel connecting rod: Stainless steel is a kind of corrosion-resistant and wear-resistant metal material, so stainless steel connecting rod is becoming more and more popular in the market. The stainless steel connection rod is beautiful in appearance, easy to clean, and has a long service life.
3. Aluminum alloy connecting rod: Aluminum alloy connecting rod has the characteristics of light, beautiful, easy to install, suitable for modern simple style of home decoration. However, aluminum alloys are not as strong and corrosion-resistant as stainless steel.
2. Classification by use
1. Fixed connection rod: Fixed connection rod is usually used to fix the curtain rod to the wall, suitable for places without Windows or where the curtain needs to be fixed.
2. Roller-type connecting rod: The roller-type connecting rod enables the curtain to slide easily through the pulley system, which is suitable for situations where the position of the curtain needs to be adjusted frequently.
3. Telescopic connecting rod: The telescopic connecting rod can be adjusted according to the size of the window, suitable for different sizes of Windows, saving space and easy to use.
3. Classification by style
1. Traditional style: Traditional style connecting rod is usually straight rod or curved shape, suitable for traditional or retro style home decoration.
2. Modern simple style: The modern simple style connection rod is usually designed for simple lines, which is suitable for modern or minimalist style home decoration.
3. Creative design style: The creative design style connection rod is more personalized, such as with flowers and birds, geometric patterns, etc., to add a touch of art to the home.
4. Other features
1. Material surface treatment: Many connecting rods are coated on the surface, such as galvanized, spray, etc., to improve rust prevention and aesthetic appearance.
2. Material color: In addition to the common white and black, there are now many other colors of the connection rod to choose from, such as gold, silver, gray, etc., to add a highlight to home decoration.
3. Installation mode: Some connecting rods support wall-mounted installation and floor installation to meet the needs of different scenarios.
Summary: When choosing a curtain rod connection rod, you need to choose the right type according to your home style, budget and usage needs. By understanding the various types and features, you can easily find the right product for you. Hopefully, this article will help you make an informed decision when choosing a curtain rod connection rod.
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