At present, the reactor refueling robot and the multi-functional underwater crawler robot at the nuclear power station have completed the integrated manufacturing of the whole machine and the integrated system of the system. The robots of the reactor pressure vessel have completed the series of tests such as the electromagnetic compatibility, the irradiation performance of software and electrical components, Comprehensive functional verification, the whole reactor bolt tensile machine successfully carried out four full-function functional verification test, a steam generator side blocking operation robot, nuclear submarine micro-operation submarine has been Daya Bay Nuclear Power Base completed the prototype simulation environment and functional testing Verification, the performance indicators have reached the design requirements. Next, the six verified nuclear reactor robots will further demonstrate their applications in China's Daya Bay Nuclear Power Base, Guangdong Taishan EPR Third Generation Nuclear Power Station and Guangxi Fangchenggang Nuclear Power Station.
The successful development and application of special series of nuclear reactors will provide important technical support and operation equipment for the safety inspection and operation and maintenance of the core equipment of nuclear power plants in our country. To break the foreign monopoly and promote the independence and localization of the core equipment of nuclear power plants in our country, It is of great significance to upgrade and upgrade the production, operation and maintenance equipment and technologies to enhance the level of safety and security in the production of nuclear power stations in our country.
Welded Bed Plate For Flanges Of Ship Pipe
The flange welded single-sided seat plate is mainly installed on the top, side wall and bottom of the cabin or cabinet as the entrance and exit of the cabin or cabinet. Valves, accessories or pipes can be installed directly on the single-sided seat plate.
Flange welded single-sided seat plate is suitable for seawater, fresh water, oil, air and steam pipelines below 300 °C. The commonly used nominal diameter is 15~150 mm, and the nominal pressure is lower than 1.6 MPa. The shape of the single-sided seat plate is similar to the corresponding lap-welded Steel Flange.
Flange welded double-sided seat plates are generally used when pipelines pass through decks and tanks, and the two sides of the seat plate are respectively connected to valves, accessories or pipes.
Compared with the single-sided seat plate, the double-sided seat plate has an extra shoulder and double-sided mounting stud bolts. The outer diameter of the shoulder is 10~20 mm larger than that of the corresponding flange, and the thickness of the shoulder is 6~12 mm.
Its scope of application and other structural dimensions are basically the same as those of the single-sided seat plate.
The manufacturing and installation methods of the flange-welded double-sided seat plate are basically the same as the single-sided seat plate, but when the screw holes are drawn, the positions of the upper and lower screw holes of the seat plate must be staggered from each other and must not overlap; deck or bulkhead The diameter of the hole on the top is 2~3 mm larger than the diameter of the seat plate.
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