Vacuum helium filling packaging device and method of nuclear power plant temperature detector

A technology of temperature detector and packaging device, applied in glass molding, glass remolding, glass manufacturing equipment and other directions, can solve the problems of alloy wire melting and helium leakage, achieve uniform heating and softening, prevent helium leakage, Fast sealing effect

Inactive Publication Date: 2017-05-31
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings and deficiencies of the above-mentioned prior art, provide a vacuum helium-filled packaging device for a nuclear power plant temperature detector and its packaging method, and solve the problem of alloy wire melting and helium gas when the nuclear power plant temperature detector is vacuum-filled and sealed. leak problem

Method used

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  • Vacuum helium filling packaging device and method of nuclear power plant temperature detector
  • Vacuum helium filling packaging device and method of nuclear power plant temperature detector

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Effect test

Embodiment 1

[0034] Such as figure 2 As shown, the vacuum helium-filled packaging device of the nuclear power plant temperature detector in this embodiment includes a glove box 7, a vacuum system for evacuating the glove box 7, a helium filling system for filling helium into the glove box 7, The clamping device 9 for clamping the quartz glass tube 11, and the laser heating system for heating the sealing part of the quartz glass tube 11.

[0035] Glove box 7 is a kind of sealing equipment, the user can operate with hands but without direct contact, it is generally a completely closed box shape, with gloves 12 for users to put their hands in, and users can put gloves 12 in the box operate.

[0036]The clamping device 9 is located in the glove box 7; the quartz glass tube 11 is sealed in the glove box 7, when the quartz glass tube 11 is sealed, one end is close to the glove 11 of the glove box 7, and the other end is fixed on the clamping device 9, and the quartz glass tube 11 is sealed. O...

Embodiment 2

[0049] On the basis of Embodiment 1, the vacuum helium-filled packaging device of the nuclear power plant temperature detector in this embodiment also includes a rotating motor 8 and a rotating motor controller 17, and the clamping device 9 is connected to the output shaft of the rotating motor 8, The rotating motor 8 is connected with the rotating motor controller 17, and the state and the rotating speed of the rotating motor 8 are controlled by the rotating motor controller 17 so as to drive the clamping device 9 and the quartz glass tube 11 to rotate.

[0050] In this embodiment, the vacuum helium-filled packaging device not only has a laser heating system, a clamping device 9, a glove box 7, a vacuum system, and a helium filling system, but the laser heating system emits laser light 13 with highly concentrated energy, which can melt quartz in a short time The glass tube 11 prevents the temperature detection wire 10 in the quartz glass tube 11 from melting; and the rotating ...

Embodiment 3

[0058] On the basis of Embodiment 1 or Embodiment 2, in this embodiment, the vacuum helium-filled packaging method of the temperature detector of the nuclear power plant is further improved:

[0059] The step of "using the vacuum system to vacuum the glove box 7" in step S3 is as in S31-step S32:

[0060] S31, open the vacuum control valve 4, open the vacuum pump 5 to vacuumize the inside of the glove box 7;

[0061] S32. Close the vacuum control valve 4 and the vacuum pump 5 after the reading of the vacuum gauge 6 meets the design requirements. Generally speaking, the design requires that the vacuum degree of the glove box 7 should reach 0.01Pa before the vacuuming can be stopped and filled with nitrogen. Therefore, the vacuum control valve 4 and the vacuum pump 5 should be closed when the reading of the vacuum gauge 1 reaches 0.01Pa.

[0062] In step S3, the step of "filling helium into the glove box 7 by using the helium filling system" is as in S33-step S34:

[0063] S33...

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Abstract

The invention discloses a vacuum helium filling packaging device and method of a nuclear power plant temperature detector. The device comprises a glove box, a vacuum system, a helium filing system, a clamping device for clamping a quartz glass tube, and a laser heating system for heating the sealing part of the quartz glass tube. The vacuum system and the helium filling system both communicate with the interior of the glove box. The clamping device is located in the glove box. The laser heating system partly extends into the glove box. By means of the vacuum helium filling packaging device, the quartz glass tube is heated and molten through lasers with highly-centralized energy on the premise that it is ensured that a temperature detection wire is not molten, and the problem that in a conventional sealing method, an alloy wire can melt is solved. By means of the vacuum system, the helium filling system and the glove box, the vacuum degree in the quartz glass tube before helium filling and the helium pressure in the quartz glass tube after helium filling can be ensured, and helium leakage can be prevented during quartz glass tube sealing.

Description

technical field [0001] The invention relates to the technical field of reactor pressure vessel inspection, in particular to a vacuum helium-filled packaging device for a temperature detector of a nuclear power plant and a packaging method thereof. Background technique [0002] The reactor pressure vessel of a nuclear power plant is an important non-replaceable component in the reactor, and ensuring its safety and reliability is of great significance to the safe operation of the nuclear power plant. Irradiation supervision of reactor pressure vessel materials is an important measure to ensure the safe operation of pressure vessels within the design life cycle. The irradiation supervision tube is an important nuclear component of the reactor body. The pressure vessel cylinder and weld material samples that run with the reactor are installed in the supervision tube to detect the degree of radiation damage of the pressure vessel; the supervision tube is regularly drawn out from ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25J21/02C03B23/057
CPCB25J21/02C03B23/057
Inventor 周军王泽明陈勇王浩杨晓林陶诗泉解怀英
Owner NUCLEAR POWER INSTITUTE OF CHINA
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