The development of nuclear power construction in China is unswerving, and instruments and meters welcome opportunities1

Faced with the current global environmental crisis and resource depletion, the development of new energy sources is imminent, especially the development of nuclear power. As we all know, nuclear power is a clean energy with little impact on the environment. At the same time, nuclear power is also a highly efficient energy source with a relatively high utilization rate of resources. In addition, as an important and competitive part of non-fossil energy, nuclear power is an inevitable choice for my country to optimize its energy structure, ensure energy supply security, actively respond to climate change, fulfill its commitment to carbon emission reduction and low-carbon green development. It is an important starting point for security strategy, promoting scientific and technological innovation, and enhancing national core competitiveness. In the development and construction of nuclear power, relevant instruments and meters are indispensable. Nuclear power development and construction, nuclear power valves are indispensable Nuclear power valves refer to the valves used in nuclear island (NI), conventional island (CI) and power station auxiliary facilities (BOP) systems in nuclear power plants. From the level of safety, it is divided into nuclear safety level I, II, III and non-nuclear level. Among them, the nuclear safety level I has higher requirements. The nuclear power valve controls the medium transportation in the nuclear power plant and is an important guarantee for the safe operation of the nuclear power plant. According to the classification of nuclear power valves, it can be divided into nuclear grade valves and non-nuclear grade valves. Nuclear grade valves are mainly used in nuclear island equipment, while non-nuclear grade valves are used in conventional island equipment and BOP equipment. A huge number of valves are used in nuclear power plants, including gate valves, globe valves, diaphragm valves, safety valves, ball valves, main steam valves, blasting valves, etc. It is reported that a million kilowatt-class unit pressurized water reactor nuclear power plant uses more than 30,000 valves. In recent years, in order to alleviate the domestic energy shortage and environmental pollution problems, the Chinese government has actively developed a series of clean energy industries such as nuclear power, especially the nuclear power industry, which provides good conditions for the expansion of my country's nuclear power valve market demand. As of 2019, China has a total of 47 nuclear power units (excluding Taiwan) with an installed capacity of 48,751.16MWe (rated installed capacity), which is expected to have broad growth potential in the future. In addition, with the gradual improvement of my country's entire nuclear power industry chain and the continuous development of domestic production technology, some enterprises in my country have gradually broken the high-end market of nuclear first-class valves that was originally monopolized by foreign manufacturers, and obtained the civil service issued by the National Nuclear Safety Administration. The nuclear pressure equipment design and production qualification license can design and produce nuclear safety valves. It has successfully developed and produced a series of nuclear-grade valves, such as gate valves, globe valves, check valves, ball valves, butterfly valves, elastic storage safety valves, regulating valves, throttle valves, diaphragm valves, bellows globe valves, etc. The market competitiveness of domestic enterprises has been greatly improved. Nuclear power instrumentation is indispensable for the safe operation of nuclear power. The editor told you that the development and construction of nuclear power requires the application of nuclear power valves. However, you know, in fact, the safe operation of nuclear power, related instruments and instruments are indispensable, and the development can be expected, just Let's see what they have together! With the increasing awareness of nuclear power safety, the development of nuclear power instrumentation is more important. In the face of the rapid development of nuclear power in my country, the state has also actively promoted the localization of nuclear power equipment, and issued many policies to promote the technological development of the nuclear power instrumentation industry. In the 'National Medium- and Long-Term Science and Technology Development Plan Outline (2006-2020)' and other plans, the nuclear power instrumentation industry has been listed as a priority development project in key areas. In nuclear power plants, the commonly used conventional measuring instruments are temperature, flow, pressure, liquid and other four instruments. Nuclear power instrument usually refers to the apparatus or equipment used to detect, measure, calculate, and display the physical quantity, material composition, physical parameter, etc. in each process system in the nuclear power plant. Nuclear power instruments can be divided into temperature instruments, pressure instruments, flow instruments, liquid level instruments, mechanical quantity instruments, regulating valves and actuators, analytical instruments, radiation monitoring instruments and other instruments and devices. With the support of national policies, my country has made great progress in the field of nuclear power instrumentation in recent years, and has launched a number of domestically produced products in instrumentation control systems, nuclear measurement instruments and other aspects. However, it must be said that the localization of key instruments and meters for nuclear power has a long way to go and is of great significance. Nuclear power instrumentation is an important part of the complete set of nuclear power equipment. Actively promoting the localization of nuclear-grade instrumentation and important non-nuclear-grade instruments is an important technical guarantee for the development of safer, more efficient and digital nuclear power plants in my country.