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A thermal insulation penetrating device for a hot chamber

A technology of hot chamber and thermal insulation layer, applied in the field of post-processing, can solve the problems of pipeline penetration without thermal insulation function and poor sealing performance, and achieve the effects of good system safety, reliable sealing and good overall sealing performance.

Active Publication Date: 2022-03-01
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a thermal insulation penetrating device for a hot chamber, which solves the problems that the existing pipeline penetrating parts do not have thermal insulation function and poor sealing performance

Method used

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  • A thermal insulation penetrating device for a hot chamber
  • A thermal insulation penetrating device for a hot chamber
  • A thermal insulation penetrating device for a hot chamber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as Figure 1-Figure 2 As shown, a thermal insulation penetrating device for a hot cell includes a quick release joint 1 and an installation assembly;

[0050] The installation assembly includes an outer tube 5 and an inner tube 10, the outer tube 5 and the inner tube 10 are hollow structures, the inner tube 10 is arranged inside the outer tube 5, and the outer tube 5 and the inner tube 10 form a Annular vacuum interlayer, an insulating layer 7 is arranged between the outer tube 5 and the inner tube 10, the two ends of the inner tube 10 protrude from the two ends of the outer tube 5, and the ends of the outer tube 5 and the inner tube 10 are connected by a sealing plate 4, the sealing plate 4 is an annular plate, the inner side and the outer side of the annular plate are respectively welded with the outer wall of the inner tube 10 and the end of the outer tube 5, and the two ends of the inner tube 10 are welded with sealing A joint 3, the outer wall of the outer pi...

Embodiment 2

[0060] Such as Figure 1-Figure 2 As shown, the embodiment is based on Embodiment 1, and the flange 8 is provided with a pressure monitoring assembly 14, which is used to monitor the pressure in the annular vacuum interlayer, and the pressure monitoring assembly 14 adopts valves, gauges and electronic vacuum The independent structure or combined structure of the meter has the function of charging and deflation and air pressure display; the inner side of the flange 8 is provided with an annular air cavity 15, and the mounting surface of the flange 8 is provided with a double-channel seal. 8 is provided with a penetrating air passage for communicating with the double-channel seal and the annular air chamber 15, and the outer wall of the outer tube 5 is provided with a plurality of vent holes 16, and the vent holes 16 are arranged inside the annular air chamber 15, and the vent holes 16 is just wrapped by the annular air chamber 15, and is used to communicate with the annular air...

Embodiment 3

[0063] Such as Figure 1-Figure 3 As shown, the embodiment is based on embodiment 1 or embodiment 2. A plurality of heat-insulating supports 11 are arranged between the thermal insulation layer 7 and the outer pipe 5, which is a "recursive bending" structure, which increases the contact area while reducing the contact area. The heat dissipation distance, and the structure has a certain degree of elasticity, which can isolate vibration and absorb noise, so that the thermal insulation penetration device has good vibration resistance and noise reduction performance. The heat insulation support is made of glass fiber, alumina fiber or Made of mullite fiber; the inner pipe 10 is provided with an expansion joint 12; the flange 8 is provided with a suspension ring 9 .

[0064] The "back-shaped bending" structure of this embodiment is as follows: image 3 As shown, it is made up of 4 semi-arc supports 113, wherein the semi-arc supports 113 form a support assembly in pairs, and the tw...

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Abstract

The invention discloses a thermal insulation penetrating device for a hot cell, which includes a quick-disconnect joint and an installation assembly; the installation assembly includes an outer tube and an inner tube, the inner tube is arranged inside the outer tube, and the outer tube and the inner tube An annular vacuum interlayer is formed, an insulation layer is arranged between the outer tube and the inner tube, the two ends of the inner tube protrude from the two ends of the outer tube, and the end of the outer tube and the inner tube are passed through a sealing plate The two ends of the inner pipe are connected with sealing joints, the outer wall of the outer pipe is provided with a flange, and the flange is installed on the prefabricated pipe interface of the heat chamber shielding wall through screws; the quick release joint is provided with Two, one end of the two quick release joints are respectively connected with the external pipes on both sides of the heat chamber, and the other ends of the two quick release joints are respectively connected with two sealing joints detachably. The invention solves the problems that the existing pipeline penetrating parts do not have the heat preservation function and the sealing performance is poor.

Description

technical field [0001] The invention relates to the technical field of post-processing, in particular to a thermal insulation penetrating device for a heat chamber. Background technique [0002] The hot cell is a special place for the treatment of radioactive toxic and harmful substances. It is a sealed shielded chamber that can be used for high-radioactivity test operations, nuclear waste treatment, and nuclear facility decommissioning treatment. There are a large number of gamma radioactive rays inside. The hot cell has two physical safety barriers to prevent the leakage of radioactive materials inside the hot cell: the first barrier is composed of a single-layer steel containment shell or a multi-layer steel containment shell, and the second barrier is composed of a concrete wall outside the containment shell . [0003] The purpose of the pipe penetration is to ensure that the temperature of the liquid, gas or gas-liquid mixture is kept stable during the process of passi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L5/02F16L59/02F16L59/065F16L51/00F16L55/035F16L55/033F16L3/10F17D5/02
CPCF16L5/02F16L59/028F16L59/029F16L59/065F16L51/00F16L55/035F16L55/0335F16L3/10F17D5/02
Inventor 周寒陈青王广金周天王新宇邱新媛周缘
Owner NUCLEAR POWER INSTITUTE OF CHINA
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