A probe for ultrasonic inspection of PWR fuel assemblies and its manufacturing process
A fuel assembly and ultrasonic inspection technology, applied in reactors, nuclear engineering, nuclear reactor monitoring, etc., can solve problems such as leakage of highly reflective fission products, cladding creep, cladding damage, etc.
Active Publication Date: 2018-11-02
CHINA NUCLEAR POWER OPERATION TECH +1
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
During the operation of the reactor, due to the long-term high-temperature and high-irradiation conditions of the fuel rods, the radiation swelling of the fuel pellets may cause cladding creep and cause cladding damage, resulting in leakage of highly reflective fission products
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
[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] like figure 2 , image 3 As shown, the probe used for ultrasonic inspection of PWR fuel assemblies according to the present invention includes a probe bracket 1 and an ultrasonic probe unit 2; the probe bracket 1 includes a substrate 4, a lead groove 5, a socket mounting seat 6 and a probe mounting hole 7, The base plate 4 is provided with a lead groove 5 and a probe installation hole 7, and the base plate 4 is connected to the socket mounting base 6 through screws; the probe bracket 1 can be equipped with two ultrasonic probe units 2 at the same time. The ultrasonic probe unit 2 is installed in the probe installation hole 7, and the outgoing cable of the ultrasonic probe unit 2 is connected to the socket mounting base 6 through the lead groove 5, and then connected to the ultrasonic instrument through an external cable.
[0022] Th...
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
The invention belongs to the technical field of nuclear power station before-service and in-service inspection, and in particular, relates to a probe for ultrasonic inspection of a pressurized water reactor fuel assembly and a manufacturing process thereof. The probe comprises a probe bracket and ultrasonic probe monomers; the probe bracket comprises a base plate, wire leading grooves, a socket mounting seat and probe mounting holes, the base plate is provided with the wire leading grooves and the probe mounting holes, and is connected with the socket mounting seat through screws; the probe bracket can be provided with two ultrasonic probe monomers simultaneously; the ultrasonic probe monomers are mounted in the probe mounting holes, and outgoing cables of the ultrasonic probe monomers are connected with the socket mounting seat through the wire leading grooves; the ultrasonic probe monomers comprise two ultrasonic probe monomer units arranged at intervals, and each ultrasonic probe monomer unit comprises a probe wafer, a sound insulation material, a backing filler and a back reflection inhibition layer from front to back sequentially; wires are arranged on and below the wafer. The height size of the probe produced by the process can be controlled to be within 1.2 mm, and the probe can be guaranteed to be safely close to a fuel rod.
Description
technical field [0001] The invention belongs to the technical field of pre-service and in-service inspections of nuclear power plants and other non-destructive testing technologies, and in particular relates to a probe for ultrasonic inspection of pressurized water reactor fuel assemblies and a manufacturing process thereof. Background technique [0002] The PWR fuel assembly is composed of fuel rods and a skeleton, and the fuel rods are supported and clamped in the skeleton in a regular arrangement. Among them, the role of the fuel rod cladding is to ensure the mechanical strength of the fuel rod, and at the same time contain the nuclear fuel and its fission products, forming the first barrier between the highly reflective fission products and the external environment. During the operation of the reactor, due to the long-term high-temperature and high-irradiation conditions of the fuel rods, the radiation swelling of the fuel pellets may cause cladding creep and cause cladd...
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): G21C17/00
CPCY02E30/30
Inventor 蔡家藩丁冬平周礼峰
Owner CHINA NUCLEAR POWER OPERATION TECH