A Rectangular Flow Channel Plate Pressure Welding Process
A welding process and flow channel plate technology, which is applied in the field of nuclear reactor flow channel plates, can solve the problems of flow channel plate deformation and inability to guarantee the geometric dimension accuracy of the flow channel plate, and achieve uniform heat release, avoid thermal deformation, and avoid deformation and blockage. Effect
Active Publication Date: 2019-03-19
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology
[0005] The purpose of the present invention is to provide a rectangular flow channel plate pressure welding process to solve the problems that the traditional processing technology easily leads to the deformation of the flow channel plate and the accuracy of the geometric dimension of the flow channel plate cannot be guaranteed
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Embodiment 1
[0049] Such as figure 1 , figure 2 As shown, a rectangular runner plate pressure welding process includes the following steps:
[0050] 1) Process the B side 2 of the runner plate first to make its flatness meet the requirements, specifically:
[0051]a1), the overall dimensions of the runner plate, making the runner plate processing fixed mold, used to fix the runner plate, the processing fixed mold of the present invention has an outer dimension of 2000mm × 200mm × 100mm, and the top is grooved according to the runner plate for fixing the flow channel Road board;
[0052] b1) Place the processing fixed mold in the middle of the CNC gantry milling machine table, so as to avoid uneven force and deformation of the flow channel plate. The CNC gantry milling machine can choose the fixed beam movable table CNC gantry milling machine DHXK3022;
[0053] c1), the milling cutter chooses a fine straight-toothed milling cutter, which can increase the machining accuracy of the runner...
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Abstract
The invention discloses a pressure induction welding process of a rectangular flow channel plate, which comprises the following steps: 1) processing the B surface of the flow channel plate to make its flatness meet the requirement; 2) welding the pressure induction tube on the flow channel plate B surface; 3), according to the size requirements of the runner and the thickness of the runner plate, process the A surface of the runner plate to make the flatness meet the requirements; 4), adopt slow wire cutting technology, along the inner wall of the pressure induction tube, Drill holes on the runner plate to obtain pressure introduction holes. The present invention adjusts the processing sequence of the flow channel plate, combined with the improvement of the drilling technology, not only can obtain a smooth pressure introduction hole, but also can ensure the high-precision flow channel size and the thickness of the flow channel plate.
Description
technical field [0001] The invention relates to the technical field of nuclear reactor flow channel plates, in particular to a rectangular flow channel plate pressure induction welding process. Background technique [0002] In conventional nuclear power plant reactors, fuel assemblies of rod bundles are generally used, and the flow and heat transfer performance of the fluid in the rod bundle channels are crucial to the safety of the nuclear reactor. In the past few decades, a lot of research has been carried out on the flow and heat transfer problems in the rod bundle channel at home and abroad, and relatively mature experimental and theoretical results have been obtained. However, for power reactors, which use plate-type fuel elements to form a large number of rectangular flow channels with small spacing, the research on the flow and heat transfer problems in this type of flow channels is relatively less, and it is still immature, so it is necessary to continue to carry out...
Claims
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IPC IPC(8): B23P15/00B23K31/00
Inventor 鲁晓东王艳林刘文兴袁德文黄彦平
Owner NUCLEAR POWER INSTITUTE OF CHINA