Nuclear fuel cladding tube high temperature biaxial creep circumferential deformation measurement system and measurement method
A biaxial creep and measurement system technology, which is applied in the direction of measuring devices, using stable tension/pressure to test the strength of materials, instruments, etc., can solve the problems of difficult control of circumferential deformation measurement, inability to obtain data, instability, etc., Achieve the effect of low cost, simple overall structure and ensuring accuracy
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Embodiment 1
[0053] This embodiment includes a deformation guide rod 1, a slide rail 3, an axial displacement locking structure, and a measurement and recording unit;
[0054] Such as figure 1 As shown, the cross-sectional shape of the slide rail 3 is cross-shaped, that is, two pieces of the upper and lower surfaces of the cuboid are respectively cut off to form a structure with a high middle and low sides, thus forming two upper tracks 31 and two lower tracks. 32. Two upper tracks 31 and two lower tracks 32 are distributed axisymmetrically;
[0055] Such as figure 2 As shown, the axial displacement locking structure includes two sets of transmission devices located on the slide rail 3, each set of transmission devices includes an upper transmission structure and a lower transmission structure, and the upper transmission structure includes an upper central shaft 41 and two sleeves respectively The upper bearings 411 at the two ends of the central shaft 41, the two upper bearings 411 are...
Embodiment 2
[0059] Such as image 3 , Figure 4 As shown, this embodiment is basically the same as Embodiment 1, the difference is that the deformed guide rod 1 of this embodiment is in the shape of a cylinder, and is made of quartz material, and one end of the deformed guide rod 1 is provided with a metal cap 2, The other end is set as a knife edge.
[0060] In order to obtain a better measurement effect, the metal cap 2 of this embodiment is made of hard aluminum alloy, and its end surface processing roughness is greater than 0.32, and the verticality is greater than 0.01mm. In addition, preferably, the knife-edge end of the deformation guide rod 1 The size of the contact surface with the sample is designed to be 8mm×2mm, the roughness of the knife-edge end is greater than 0.32, and the perpendicularity is greater than 0.01mm, which can not only meet the accuracy of measurement, but also avoid damage to the sample.
Embodiment 3
[0062] Such as Figure 5 , Image 6 As shown, this embodiment is basically the same as Embodiment 2, the difference is that this embodiment also includes a plurality of positioning brackets, each positioning bracket includes a fixed seat 13, a connecting rod 14 and a fork 15, and the fixed seat 13 is connected to the connecting rod. Rod 14 is movably connected, and connecting rod 14 can do 360 degrees around the axis connected with the fixed seat. 0 Rotation; the connecting rod 14 is movably connected with the fork 15, and the fork can make 360 degrees around the axis connected with the connecting rod. 0 Rotation; the fork 15 is in a "U" shape, and the two ends of the slide rail 3 are provided with a snap-in groove 5, the slide rail 3 is fixed on the snap-in groove 5 through the snap-in groove 5, and the slide rail 3 can pass through the snap-in groove 5 performs a translational movement relative to the fork 15, so that through fine-tuning operations such as rotation and t...
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Abstract
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