A processing tool and processing method for forming a sodium distributor manifold
A technology of processing tools and processing methods, which is applied in the field of processing tools for forming manifolds of sodium distributors, can solve problems such as welding defects and complicated manufacturing, and achieve the effects of eliminating creep phenomenon, simple structure, and reducing environmental pollution
Active Publication Date: 2021-07-20
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology
[0003] The purpose of the present invention is to design a manufacturing equipment for sodium-cooled fast stack sodium distributors with manifolds to solve the problems of complex manufacturing and welding defects that need to be welded or single-branched pipes when the existing sodium distributors are formed.
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0026] The invention provides a processing tool for forming a sodium distributor manifold, which includes a limiting mold and a forming mold.
[0027] Such as figure 1 As shown, the inside of the limiting mold is cylindrical, and the forming mold is arranged in the limiting mold and is provided with a first nozzle 8. The inside of the forming mold can accommodate the raw material tube 9 that needs to be extruded. When the raw material tube 9 is deformed by the extrusion operation from both ends and inside, the forming die can be displaced in the limiting die along with the deformation of the raw material tube 9; when the extrusion operation stops, the displacement of the forming die ends, and the raw material tube 9 is pressed into the main pipe 10 of the sodium distributor due to the extrusion operation, and forms a branch pipe 11 of the sodium distri...
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The invention belongs to the technical field of fast reactor cooling, and in particular relates to a processing tool for forming a manifold of a sodium distributor, comprising a cylindrical limiting mold inside, a forming mold which is arranged in the limiting mold and is provided with a first branch nozzle , the inside of the forming die can accommodate the raw material tube, when the raw material tube inside the forming die is deformed by the extrusion operation from both ends and inside, the forming die can be displaced in the limiting die along with the deformation of the raw material tube; When the pressing operation stops, the displacement of the molding die ends, and the raw material pipe is pressed into the main pipe of the sodium distributor due to the extrusion operation, and a sodium distributor branch pipe that communicates with the main pipe of the sodium distributor and protrudes from the main pipe of the sodium distributor is formed in the first branch nozzle . Based on the principle of hydraulic bulging, the invention adopts the method of cold deformation, which avoids the uncontrolled growth of material grain size and the occurrence of uneven grain size and microstructure caused by multiple heating in the forming process. Discontinuities and welding defects.
Description
technical field [0001] The invention belongs to the technical field of fast reactor cooling, and in particular relates to a processing tool and a processing method for forming a manifold of a sodium distributor. Background technique [0002] Fast reactor (fast neutron breeder reactor) is the preferred reactor type for the fourth-generation advanced nuclear energy system in the world, representing the development direction of the fourth-generation nuclear energy system. The closed nuclear fuel cycle formed by it can increase the utilization rate of uranium resources to more than 60%, and can also reduce the generation of nuclear waste to the greatest extent, and realize the minimization of radioactive waste. Fast reactors cannot use water as a coolant, but liquid metal sodium is generally used to bring out the heat. The sodium distributor is the flow distribution device in the main cooling system of the secondary loop of the fast reactor and an important part of the main hea...
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IPC IPC(8): B21D26/037
CPCB21D26/037
Inventor 邰永余华金杨红义吴水金周立军武琦张川
Owner CHINA INSTITUTE OF ATOMIC ENERGY