Here we say wear-resistant ball valve is made based on the function of the cock has evolved, its opening and closing for ball core, through the valve stem to have 90 degrees of rotation valve switch, wear-resistant ball valve in the line is mainly used for cutting, distribution, and the flow direction of medium change, designed to "V" open v-type ball valve also has a good flow regulating performance.
The reason why it is widely used in modern industry is that ball valves open and close quickly, have good sealing, simple structure and low flow resistance.
The structural classification of ball valves is based on:
Ball valves can be divided into fixed ball valves, floating ball valves, track ball valves, v-type ball valves, eccentric half-ball valves, three-way ball valves, four-way ball valves, etc.
According to the connection mode, it can be divided into flanged ball valve, pinball valve, ball valve with internal thread, ball valve with external thread, soldering ball valve, hoop ball valve (generally health level ball valve), sleeve ball valve, etc.
The sealing material can be divided into soft sealing ball valve and metal hard sealing ball valve.
The soft sealing ball valve is generally suitable for the medium with a temperature of less than 150 degrees. For the medium with a temperature of more than 150 degrees, PPL seal or hard alloy metal seal is adopted.
Small ball valve, floating ball valve, is commonly used in large diameter ball valve, because the need of opening and closing torque is bigger, often choose fixed ball valve, can reduce the torque needed for opening and closing, improve the reliability of the work. V-type ball valves and eccentric half-ball valves can be used to regulate flow, while three-way ball valves and four-way ball valves are used to reverse flow.
Ball valves are usually made of carbon steel, 304 stainless steel, 316 stainless steel, and the body and ball are fully lined with ptfe for the corrosive medium.
Ball valves are mainly driven by electric, pneumatic, worm wheel drive, relative to small diameter ball valves, generally with the handle to open and close.
4. Fire valves will be widely used in three industries in the future
It is known that the market size of the fire valve industry in 2013 was much larger than that of last year, which is an obvious fact. Until 2013, various fire-fighting valve manufacturers and traders had been in more than 700, and even the daily trading enquiries were over 200, and it was clear that the supply and demand market was heating up. From the preliminary analysis of the first quarter data, the fire valve demand market was 20 percentage points higher than last year.
In recent 10 years with China's fire control valve valve industry (dynamic) the development of the industry, fire valve specifications are also growing, the application of the fire valve industry more and more, such as petrochemical industry, oil refining industry, nuclear industry, such as thermal power industry are widely used. Here's a look at the development prospects of the fire control valve in the following three industries.
Petrochemical industry, petrochemical industry has always been very fierce competition, also the most strict with fire control valve equipment, fire valve in the future will cooperate with industry automation, improve overall level fire valve equipment, development of multi-function, high efficiency, low consumption of petrochemical fire valve equipment. Every year, the annual output value of billions in petrochemical enterprises in China, this means that our country has a lot of the fire valve market (valves, pumps), we should to consider from the Angle of market changes, to ensure the stability and development.
Oil refining industry: China's refining industry has expanded rapidly after 60 years. Driven by a series of policies and measures, the output value and output of China's refining industry continued to grow in 2010, and the structural adjustment was gradually advanced, and the momentum of development continued to be sound. In 2010, the refining industry produced an output value of 2425.2 billion yuan, up 38 percent year on year. Therefore, it can be seen that the application market of fire valves in China's oil refining industry is huge.
Nuclear power industry: the fire valve is the basic equipment for nuclear power equipment in this industry, accounting for approximately 5-10% of the capacity. China will continue to develop its nuclear power plans, with 40GW of nuclear power installed capacity by 2015 and 75GW by 2020, respectively. China will restart approval of new nuclear power projects around the middle of 2012. Therefore, new products and equipment should be introduced to meet the market demand in this field.
In addition, the construction and boiler industry and special industries need to apply fire valves. In particular, the use of spring fire valves is very extensive, in many enterprises have been used, which fully shows the rapid development of fire valves, good prospects. At the same time, more and more industry applications also have more new requirements for fire valve products, and the quality and technical requirements of fire valves are getting higher and higher.
|Address：Tongling Rongjing Technology Co., Ltd|