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There are three main types of nuclear safety valves, namely bellows sealed spring safety valves, fully opened spring safety valves with actuators and pilot safety valves with detectors. Although the amount...

There are mainly four structures for the nuclear grade gate valve, wedge elastic single plate gate valves, wedge double plate gate valves, parallel double plate gate valves with spring preload and parallel...

A pressurized water reactor nuclear power plant equipped with two million-kilowatt units is a relatively common and reasonable, which consists of NI (Nuclear Islands), CI (Conventional Islands) and power...

Compared with the valves used in conventional large-scale thermal power plants, although the pressure and temperature of PWR nuclear power plant valves are lower, the valves used in nuclear power plants...

The world is facing the problem of an energy shortage, and China is in the process of industrialization and urbanization; the demand for energy will continue to grow, and the contradiction between energy...

4. The analysis of test results 4.1 The morphology of microscopic surface cross-section of the coating The surface cross-sectional morphology is closely related to the matching properties, wear resistance,...

The strengthening process of depositing CrN coating on Cr3C2-NiCr coating to form CrN or Cr3C2-NiCr composite coating by using supersonic flame spraying (HVOF) combined with physical vapor deposition...

The working principle, structural features and product performance of the quick lift metal seated plug valve are introduced, and the fast transmission systems are composed of hydraulic actuators through...

4. Measures for avoiding internal leakages For small-diameter forged steel globe valves with a size less than and equal to DN50, the integrated forging process is adopted for the connection between...

The internal leakage in the use of globe valves is summarized and analyzed, and the measures to solve the problems are put forward. A globe valve is an indispensable fluid control product in modern...

The working principle, structural design, finite element analysis and manufacturing process of the main parts of the lift metal-seated plug valve are explained. 1. Overview The plug valve has the...

1. Overview A 2.4Mt/a delayed coking unit adopts the process of two furnaces and four towers, and normally produces green coke for 24 hours. There are 16 high-temperature valves on the device. The medium...