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Niobium and titanium flange device with superconducting cavity suitable for two types of washers

A technology of superconducting cavity and flange, applied in accelerators, electrical components, etc., can solve the problems of difficult cleaning of indium wire and unusable cavity, so as to save manpower for installation and dismantling, save manpower and time, and reduce use Quantity effect

Inactive Publication Date: 2014-04-02
INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flattened indium wire after use is difficult to clean from the flange plane
Because the flange is a planar structure, it is very easy to bring the indium wire into the superconducting cavity when removing the used indium wire, making the cavity unusable

Method used

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  • Niobium and titanium flange device with superconducting cavity suitable for two types of washers
  • Niobium and titanium flange device with superconducting cavity suitable for two types of washers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: see figure 1 , a superconducting cavity niobium-titanium flange device suitable for magnesium-aluminum alloy sealing gaskets, including a lower flange 3 connected by an upper flange 1 and a niobium pipe fitting 4 on the niobium cavity, and on the sealing surface of the upper flange 1 There is a right-angle notch 1-1 on the top, and a boss 3-1 is arranged on the sealing surface of the lower flange 3. The cavity formed by the right-angle notch 1-1, the sealing surface of the lower flange 3 and the side of the boss 3-1 is a sealed cavity , which is provided with a sealing ring 2.

[0018] The sealing ring 2 is a magnesium-aluminum alloy sealing gasket.

Embodiment 2

[0019] Example 2: see figure 2 , a superconducting cavity niobium-titanium flange device suitable for gaskets, the sealing ring 2 is an indium wire sealing gasket.

[0020] All the other structures are the same as in Example 1.

[0021] All the flanges in the present invention are first assembled with magnesium-aluminum alloy gasket flanges, checked with a vacuum leak detector, and if any flanges that cannot be sealed are sealed with indium wire gaskets. In this way, only a small amount of indium wire-sealed surfaces need to be processed during disassembly. Compared with all indium wire seals, the present invention saves processing time and manpower; compared with magnesium-aluminum alloy gaskets, it does not need to frequently return to the factory for maintenance of the sealing surface.

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Abstract

The invention belongs to the field of a superconducting acceleration cavity of an accelerator, and provides a niobium and titanium flange device with a superconducting cavity suitable for two types of washers. The device comprises an upper flange and a lower flange, wherein the lower flange is connected with a niobium pipe of a niobium cavity. The device is characterized in that the sealing surface of the upper flange is provided with a right-angled notch, the sealing surface of the lower flange is provided with a boss, a cavity which is formed by the right-angled notch, the sealing surface of the lower flange and the side surface of the boss is a sealing cavity, and the interior of the cavity is provided with a sealing ring. The device has the advantages that the device is suitable for both of the magnalium alloy washer and the indium washer; the vacuum sealing of the cavity is ensured, the usage amount of indium sealing flanges is reduced, the labor and time of installing and detaching the washers are saved, and meanwhile, the pollution to the cavity by the indium is effectively avoided.

Description

technical field [0001] The invention belongs to the field of superconducting accelerating cavities of accelerators. Background technique [0002] There are multiple opening structures on the superconducting niobium cavity, and these openings require flange structures to ensure vacuum or connect with other equipment. In order to enable the flange to be welded with the niobium tube of the superconducting niobium cavity, the flange material of the superconducting cavity is made of niobium-titanium material that can be directly welded with niobium by electron beams. However, the hardness of niobium and titanium itself is not high, and flange gaskets are mostly processed with materials whose hardness is lower than that of niobium and titanium. At present, the materials of gaskets can be divided into two categories, magnesium-aluminum alloy and indium wire, and there are also two different niobium-titanium flange structures corresponding to them. Among them, the niobium-titanium...

Claims

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Application Information

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IPC IPC(8): H05H7/20
Inventor 徐孟鑫何源张生虎翟浩银武彦红
Owner INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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