A solution uniform injection and mixing device
A mixing device and uniform technology, which is applied in the field of uniform injection of solutions and mixing devices, can solve problems such as mixing, and achieve the effect of improving uniform mixing and reducing resistance
Active Publication Date: 2022-02-01
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology
[0004] In order to solve the above technical problems, the object of the present invention is to provide a solution uniform injection and mixing device, through the multi-layer annular injection pipeline and the swirl structure of straight fins with an inclination angle, it solves the problem of tracer solution in the large-diameter loop pipeline with small resistance. The problem of mixing ensures that the tracer solution and the background solution are evenly mixed before entering the simulated reactor inlet, laying a strong foundation for the test data and result analysis
Method used
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Embodiment 1
[0021] Such as figure 1 , 2 as shown,
[0022] 1 injection department
[0023] The multi-layer annular injection pipe includes two parts, which are respectively a large-diameter injection straight pipe 1 and a small-diameter circular elbow. The straight pipe section adopts DN25 stainless steel pipe, and the small-diameter circular elbow adopts DN10 stainless steel pipe. Open a welding hole on the side of the straight pipe, insert the arc elbow into the welding hole and weld it with the straight pipe. The annular bent pipe adopts a multi-layer symmetrical arrangement, which can be four layers, and the center of each layer is on the vertical central axis of the large-diameter injection straight pipe 1. The bending radii of each small-diameter circular elbow from the inside to the outside are 40mm, 70mm, 100mm and 130mm respectively. The advantage of adopting multi-layer annular pipe arrangement is that tracer solution injection holes can be arranged relatively uniformly in ...
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The invention discloses a solution uniform injection and mixing device, which comprises an injection part located upstream along the direction of liquid flow. The injection part is a multi-layer annular structure, including a large-diameter injection straight pipe, which is along its length The axial direction is connected with the first small-diameter circular elbow, the second small-diameter circular elbow, the third small-diameter circular elbow, ..., the nth small diameter, which are arranged in concentric circles and whose radii increase sequentially. The center of the above-mentioned small-diameter circular elbow is on the vertical central axis of the large-diameter injection straight pipe, and the large-diameter injection straight pipe is provided with a plurality of vertical holes along the long axis direction A plurality of first through holes. The present invention adopts a multi-layer circular injection device, which ensures that the tracer solution injection points can be evenly arranged in the loop pipeline, and can fully make the tracer liquid merge with the bottom liquid at multiple positions, and at the same time has a small resistance characteristics.
Description
technical field [0001] The invention relates to the field of reactor overall hydraulic simulation tests, in particular to a solution uniform injection and mixing device. Background technique [0002] The mixing test in the lower chamber is an important research content in the overall hydraulic simulation test of the reactor. Its main purpose is to obtain the flow share from different loops in the total flow of each simulated fuel assembly, and provide reference for the thermal-hydraulic safety design of the reactor. and guidance. For multi-loop reactors, in the experimental research, the method of injecting a tracer solution in one loop is usually used to distinguish the fluid working medium of this loop from the fluid working fluid of the other loops, and the measured indicator at the inlet of the simulated fuel assembly Tracking solution concentration for flow share calculations. In order to ensure the reliability and authenticity of the test data, it is required in the ...
Claims
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IPC IPC(8): G21C17/00
CPCG21C17/001Y02E30/30
Inventor 眭曦廖恒基姚瑞李华奇闫晓
Owner NUCLEAR POWER INSTITUTE OF CHINA