An experimental device and method for blocking flow in an annular fuel inner channel
An experimental device and inner channel technology, applied in the field of annular fuel inner channel plugging experimental device, can solve problems such as unusable blocking behavior, and achieve the effects of low cost, simple overall structure, and easy processing
Active Publication Date: 2019-06-14
XI AN JIAOTONG UNIV
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, this device is mainly used to study the filter performance and resistance characteristics of the lower pipe seat, and cannot be used to study the blocking behavior of foreign matter in the fuel assembly.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0023] Below in conjunction with accompanying drawing, the present invention is described in detail:
[0024] Such as figure 1 As shown, a kind of annular fuel inner channel blockage experimental device, comprises cylindrical casing 2, the fuel element 4 that is arranged in cylindrical casing 2 and flow blocking device 5, the inlet connecting pipe that is welded on the lower end of cylindrical casing 2 1. The outlet connecting pipe 8 welded on the upper end of the cylindrical casing 2, the experimental device is connected to the experimental piping system through the inlet connecting pipe 1 and the outlet connecting pipe 8. The fuel element 4 includes three annular cylinders, which are respectively an outer cladding 4-1, an annular heating section 4-2 and an inner cladding 4-3, and the annular heating section 4-2 is located at the outer cladding 4-1 and the inner cladding 4-3 The passage in the inner cladding 4-3 is the inner passage, and the passage between the outer claddin...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
An annular fuel inner channel flow blocking experiment device and method are disclosed. The experiment device comprises an annular fuel, a cylindrical sleeve, a flow blocking device, an inlet connecting pipe and an outlet connecting pipe, wherein the inlet connecting pipe is welded to the lower part of the cylindrical sleeve pipe, the outlet connecting pipe is welded to the upper portion of the cylindrical sleeve pipe, a fixing part is welded at the joint of the cylindrical sleeve and the inlet connecting pipe and the outlet connecting pipe, the flow blocking device is connected on the fixingpart through a steel wire rope, and the axial position of the flow blocking device is determined by another fixing device; the annular fuel is connected with the cylindrical sleeve through a positioning grid frame, and the positioning grid frame is also a coolant temperature measuring channel; and five pressure taking devices are arranged in the axial direction and are used for measuring the pressure drop before and after blocking and the change condition of the flow blocking downstream pressure. The device is simple in overall structure and easy to machine, can well simulate the annular fuelinner channel flow blocking working condition, and provides an experimental basis for researches on the annular fuel inner channel flow blocking.
Description
technical field [0001] The invention relates to the technical field of annular fuel in nuclear power plants, in particular to an experimental device and method for blocking flow in an inner channel of annular fuel. Background technique [0002] In order to reduce the potential safety hazard of excessive fuel pellet temperature, the Massachusetts Institute of Technology first designed a double-sided cooling annular fuel element. This fuel element has two major advantages: the radial heat conduction path of the pellet is short and the coolant wetting circumference is large, making The maximum temperature of the fuel is significantly lowered, and related literature points out that the use of the fuel element can increase the power density of the core to 150% while maintaining or even improving the safety margin of the existing reactor. During the operation of a nuclear reactor, debris such as wires, flat steel, and metal sheets may flow into the inlet of the core along with the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G21C17/00G21C17/10G21C3/32G21C3/30
CPCG21C3/30G21C3/32G21C17/00G21C17/10Y02E30/30
Inventor 秋穗正张衍巫英伟田文喜苏光辉
Owner XI AN JIAOTONG UNIV