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Method and device for de-gassing a liquid-gas-mixture

A liquid gas and mixture technology, which is applied in the field of X-ray system and the preparation of rigid foam materials, can solve the problems of insufficient degassing effect and long time.

Inactive Publication Date: 2011-05-04
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, it has been found that, especially when the liquid mixture has a high viscosity, or if the liquid mixture to be degassed is a thixotropic liquid mixture, the usual degassing methods have drawbacks, such as insufficient degassing effect or a long time

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  • Method and device for de-gassing a liquid-gas-mixture

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Embodiment Construction

[0043] figure 1 In , a device 1 for degassing a liquid-gas mixture 3 is described. The device 1 comprises a chamber 5 , the interior of which can be brought to a reduced pressure of 5 hPa by means of a vacuum pump 7 . The liquid-gas mixture 3 can be introduced into the chamber 5 via a supply device 9 . The supply device 9 can be a simple valve or a metering pump. The supply means 9 are arranged such that the liquid-gas mixture 3 supplied to the chamber 5 drops onto the central area 11 of the inner surface 13 of the rotating body 15 .

[0044] The rotating body 15 is a frustoconical body which tapers downwards and is open at the top. When the rotating body 15 rotates rapidly about the axis of rotation 17 which coincides with its axis of symmetry, the liquid-gas mixture 3 is forced outwards by centrifugal force. The flow of the liquid-gas mixture 3 is schematically depicted in the figure by arrows. The liquid-gas mixture 3 flows and spreads along the entire inclined inner s...

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Abstract

A method and a device for de-gassing a liquid-gas-mixture is proposed. The method comprises: inserting the liquid-gas-mixture (3) into a chamber (5) wherein the chamber (5) is at a reduced gas pressure and arranging the liquid-gas- mixture (3) on a centre region (11) of a surface (13) of a rotating body (15) such that the liquid-gas-mixture (3) is subjected to a centrifugal force. Therein, the surface (13) of the rotating body (15) is adapted such that the liquid-gas-mixture (3) is spread over the surface (13) due to the centrifugal force and finally flows over a radially outward edge region (21) of the surface (13) of the rotating body (15). Due to the occurring centrifugal forces, even highly viscous or thixotropic liquids may bespread over the rotating surface as a thin layer from which gas incorporated in the liquid can easily and effectively escape. Thus, a rigid foam material having low specific weight and high electrically insulating properties can be produced from the de-gassed liquid comprising e.g. a resin into which microspheres are incorporated.

Description

technical field [0001] The present invention relates to a method and apparatus for degassing liquid-gas mixtures, and to a method for producing rigid foams using such a degassing method. Furthermore, the invention relates to a rigid foam produced by the method of the invention, a high-pressure generator using such a rigid foam and an X-ray system using such a high-voltage generator. Background technique [0002] New electrically insulating housings for high-voltage generators of X-ray systems can be made of so-called hybrid materials or syntactic foams. WO03 / 074598 discloses a method of making a syntactic rigid foam comprising a plurality of microspheres. The microspheres are implemented as a matrix material surrounding the microspheres. For this purpose, a mixture comprising liquid matrix material and microspheres can be mixed in a container. Finally, the matrix material contained between the microspheres can be cured, thus forming a lightweight, stable rigid foam. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/00
CPCB01D19/0026
Inventor H·尼格尔
Owner KONINK PHILIPS ELECTRONICS NV
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