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Fuel rod puncture device

A technology of fuel rods and measuring chambers, which is applied in the field of helium volume ratio measurement in fuel rods, can solve the problems of poor sealing, low vacuum degree of puncture device, error of detection results, etc., achieves improved device vacuum degree, good sealing effect, and improved The effect of accuracy

Active Publication Date: 2016-06-08
CNNC JIANZHONG NUCLEAR FUEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of the above prior art, the present invention provides a fuel rod puncture device to solve the problems in the prior art such as poor sealing performance, low vacuum degree of the puncture device, and large errors in detection results.

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  • Fuel rod puncture device
  • Fuel rod puncture device
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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] Such as image 3 As shown, a fuel rod piercing device of the present invention includes a handle 2, a sealing head 3, a first compression sleeve 4, a first sealing ring 5, a second sealing ring 6, a second compression sleeve 7, and a locking sleeve 8 , needle bar 9, rotating head 10, third sealing sleeve 11, measuring chamber 12, fourth sealing ring 13, gas source distributor 14, screw 15, valve 16 and needle 19; the right end of measuring chamber 12 is processed with three-step blind hole , where the stepped hole with the smallest inner diameter is assembled with the fuel rod, the stepped hole with the largest inner diameter is at the far right end of the measurement chamber 12, the stepped hole is processed with internal threads, the outer wall of the left section of the sealing pressure head 3 is processed with external threads, and...

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Abstract

The invention relates to the technical field of fuel rod internal-helium volume ratio measurement and particularly relates to a fuel rod puncture device. The device is characterized in that a blind hole is formed in the right end of a measurement chamber; a through hole is formed in the middle of a seal pressure head; the seal pressure head is arranged in the blind hole of the measurement chamber; a fuel rod passes through the through hole of the seal pressure head so as to be communicated with the interior of the measurement chamber; a vent hole is formed in the left end of the measurement chamber and communicated with the blind hole of the measurement chamber; an air source distributor is arranged in the vent hole of the measurement chamber, connected with a gas chromatograph and used for detecting gas compositions; a puncture blind hole is formed in the upper part of the measurement chamber and communicated with the blind hole of the measurement chamber; a rotating head of a puncture mechanism is arranged in the puncture blind hole in the upper part of the measurement chamber, the left and right end surfaces of the rotating head are provided with holes and matched with handles, the lower end of the rotating head is connected with a needle rod, the lower end of the needle rod is provided with a needle head, and the needle rod can move up and down along the puncture blind hole of the measurement chamber. The fuel rod puncture device is good in sealing effect and improved in vacuum degree, and is capable of improving the accuracy of detect results.

Description

technical field [0001] The invention relates to the technical field of helium volume ratio measurement in fuel rods, in particular to a fuel rod piercing device. Background technique [0002] With the continuous improvement and renewal of nuclear fuel element manufacturing technology, higher requirements are put forward for the quality control and detection technology in the nuclear fuel element manufacturing process. In the fuel rod manufacturing process, the detection of the helium volume ratio in its internal space is a new detection item. [0003] Such as figure 1 As shown, the determination of the helium volume ratio in the sample rod is determined by the impurity deduction method. First, the fuel rod is sealed into the helium volume ratio measurement device in the fuel rod. Puncture, so that the helium in the rod can be released into the closed cavity smoothly, and the Ne, H 2 , O 2 , N 2 、CH 4 , CO, CO 2 The content of the helium gas volume ratio is obtained by...

Claims

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Application Information

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IPC IPC(8): G01N1/22G01N30/16
CPCG01N1/2226G01N30/16
Inventor 陈长友张剑唐育纲吴顺停陈道军周永忠
Owner CNNC JIANZHONG NUCLEAR FUEL
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