Quick aging method for vacuum seal product

A technology of vacuum sealing and accelerated aging, which is used in fluid tightness testing, machine/structural component testing, instruments, etc. It can solve the problems of internal vacuum failure, difficult to obtain, expensive helium, etc. Achievable, easy-to-achieve results

Inactive Publication Date: 2009-01-21
FU ZHUN PRECISION IND SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the heating method is to accelerate the chemical reaction in the cavity by heating, so that the defective products will appear in advance, but the surface of the heat pipe is severely oxidized after heating, which makes subsequent surface treatment difficult
The helium leak detection method is to use the monomolecular helium gas with a small gas volume without heating. After pressurization, it can directly penetrate the heat pipe with a micro leak and enter the cavity, causing the internal vacuum to fail. However, the price of helium gas is relatively high. Expensive and not readily available, making the method costly

Method used

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  • Quick aging method for vacuum seal product
  • Quick aging method for vacuum seal product
  • Quick aging method for vacuum seal product

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Embodiment Construction

[0014] like Figure 1 to Figure 2 As shown, the basic principle of the accelerated aging process of the vacuum-sealed product of the present invention is to put the vacuum-sealed product into a furnace body 10, and perform an accelerated aging test in a heated and pressurized environment, so that defective products can be revealed in advance and eliminated. Here, the accelerated aging process takes a heat pipe as an example to carry out the aging test and to illustrate it. It mainly includes four steps, which are described separately below.

[0015] First, open the furnace door 12 of the body of furnace 10, put the vacuum-sealed product to be tested, i.e., the heat pipe, into the body of furnace 10, and the body of furnace 10 is provided with a heating device such as an electric heater (not shown) to control the body of furnace 10. Heating; In addition, the furnace body 10 is also provided with a pressurizing device (not shown) that stores nitrogen (N2) and hydrogen (H2) mixe...

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Abstract

This invention discloses a method for accelerating ageing to vacuum sealed products including the following steps: 1, putting a vacuum sealed product to be tested in a furnace, 2, penetrating gas N and H to the furnace anf heating it till the temperature and pressure reach to the pre-designed values, 3, timing and controlling the acceleration of the product in the furnace in terms of the designed time, 4, releasing the pressure after the timing and taking out the product, which accelerates the ageing of products by heating and adding pressure at the same time.

Description

【Technical field】 [0001] The present invention relates to a method for accelerated aging of vacuum-sealed products. 【Background technique】 [0002] Vacuum sealing products are widely used in real life. Taking the heat dissipation field as an example, in order to solve the heat dissipation problem of high heat density, the industry has invented various heat dissipation solutions that use the principle of phase change for heat transfer. In various fields of heat dissipation, such as the field of electronic heat dissipation and the field of aviation, the typical product is a heat pipe (Heat Pipe), which is made by setting a gas-tight cavity in the pipe body, vacuuming the cavity, and injecting an appropriate amount of heat of vaporization. Working fluid with good fluidity, stable chemical properties and low boiling point, such as ammonia water, methanol, ethanol, water or acetone, etc., is sealed, and the inner wall of the shell is usually provided with a capillary structure (C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/00
CPCC22F1/00
Inventor 林振辉韩飞李震
Owner FU ZHUN PRECISION IND SHENZHEN
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