FR2606464A1 - Oxygen pump or compressor - Google Patents

Oxygen pump or compressor Download PDF

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Publication number
FR2606464A1
FR2606464A1 FR8715487A FR8715487A FR2606464A1 FR 2606464 A1 FR2606464 A1 FR 2606464A1 FR 8715487 A FR8715487 A FR 8715487A FR 8715487 A FR8715487 A FR 8715487A FR 2606464 A1 FR2606464 A1 FR 2606464A1
Authority
FR
France
Prior art keywords
materials
oxygen
ceramic
coated
compressor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8715487A
Other languages
French (fr)
Other versions
FR2606464B3 (en
Inventor
Friedrich Hetzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linde GmbH
Original Assignee
Linde GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of FR2606464A1 publication Critical patent/FR2606464A1/en
Application granted granted Critical
Publication of FR2606464B3 publication Critical patent/FR2606464B3/en
Expired legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/02Selection of particular materials

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Compressor (AREA)

Abstract

The rotary pump or compressor to deliver or pressurise oxygen largely consists of materials which are non-combustible in oxygen. It is made e.g. of ceramics or ceramic-coated materials or of rare earth metals or alloys or materials coated therewith. Materials mentioned are Al-titanate, Al-oxide, Zn-oxide, Si-carbide or nitride ceramics.

Description

Installation pour le transport et/ou la
compression de l'oxygène notamment par
pompe ou par compresseur."
L'invention concerne une installation pour le transport etXou la compression de oxygène, par exemple, par une pompe ou par un compresseur.
Installation for transport and / or
compression of oxygen in particular by
pump or compressor. "
The invention relates to an installation for transporting or compressing oxygen, for example, by a pump or by a compressor.

Dans les pompes ou compresseurs à oxygène connus, on court, en général, le risque de voir se produire une réaction chimique entre le produit transporté et les matériaux qui ont servi à construire l'installation, en particulier, de voir l'installation prendre feu. Pour réduire au minimum ce risque d'incendie, il est porté une attention toute spéciale, dans la construction des pompes à oxygène et appareils analogues, à ce qu'il ne puisse s'amorcer une combustion. A cet effet,il est prévu des dispositifs qui empêchent que deux pièces de la construction se touchent, avant la formation de chaleur et d'étincelles qui pourrait en résulter, par exemple en laissant un jeu important entre les pièces tournantes et les pièces fixes, ou en rendant ces pièces relativement inoffensives, en utilisant des matériaux appropriés. (Utilisation de bronze).D'un autre côté, le risque d'inflammation est fortement réduit au moyen de l'introduction dans le pompage de corps étrangers, c'est-à-dire en mettant en service des filtres et tamis. D'autre part, il doit être évité, en donnant à la pompe une forme appropriée, qu'il ne se produise, dans des zones voisines du milieu pompé, des différences de pression importantes, afin d'interdire toute possibilité d'inflammation par compression adiabatique. Malgrè ces dispositions, les pompes et compresseurs à oxygène construits suivant l'état actuel de la technique ne sont pas totalement à l'abri d'un incendie. In known oxygen pumps or compressors, there is, in general, the risk of seeing a chemical reaction occur between the product transported and the materials which were used to build the installation, in particular, of seeing the installation catch fire . To minimize this risk of fire, special care is taken in the construction of oxygen pumps and similar devices to ensure that it cannot initiate combustion. For this purpose, devices are provided which prevent two parts of the construction from touching each other, before the formation of heat and sparks which could result therefrom, for example by leaving a large clearance between the rotating parts and the fixed parts, or by making these parts relatively harmless, using appropriate materials. (Use of bronze) .On the other hand, the risk of ignition is greatly reduced by the introduction into the pumping of foreign bodies, that is to say by using filters and screens. On the other hand, it must be avoided, by giving the pump an appropriate form, that there occur, in areas close to the pumped medium, significant pressure differences, in order to prohibit any possibility of ignition by adiabatic compression. Despite these provisions, the oxygen pumps and compressors built according to the current state of the art are not completely protected from fire.

L'invention a en conséquence, pour objet de supprimer tout risque d'incendie dans les appareils de transport et/ou de compression de l'oxygène. The object of the invention is therefore to eliminate any risk of fire in the oxygen transport and / or compression apparatus.

A cet effet, l'invention propose que les appareils soient construits en matériaux qui ne peuvent brûler dans l'oxygène. To this end, the invention proposes that the devices be constructed of materials which cannot burn in oxygen.

I1 parait particulièrement avantageux de fabriquer des appareils en céramique, ou enrobés de céramique. Comme exemples de tels matériaux, on peut citer les titanates d'aluminium, oxyde d'aluminium, oxyde de zirconium et carbure de silicium, ou céramiques à base de nitrures. Des exemples de réalisarion de parties de la construction, d'une pompe par exemple suivant l'invention, seront par exemple, un arbre de pompe enrobé de céramique, ou la construction du corps de la pompe et du rotor, totalement en céramique. It seems particularly advantageous to manufacture apparatuses made of ceramic, or coated with ceramic. Examples of such materials include aluminum titanates, aluminum oxide, zirconium oxide and silicon carbide, or ceramics based on nitrides. Examples of realization of parts of the construction, of a pump for example according to the invention, will be for example, a pump shaft coated with ceramic, or the construction of the pump body and of the rotor, completely in ceramic.

Dans des ut. lisations spéciales, par exemple, s'il doit s'établir des contraintes mécaniques importantes (entratnement de fusées), il y a même avantage à ce que la construction soit faite entièrement en métaux inoxydables et/ou en matériaux revêtus de métaux inoxydables. In ut. Specializations, for example, if significant mechanical stresses have to be established (rocket training), it is even advantageous if the construction is made entirely of stainless metals and / or of materials coated with stainless metals.

Dans beaucoup de cas, il est aussi possible d'utiliser une combinaison de matières céramiques et de métaux inoxydables, par exemple, un joint d'étanchéité inoxydable entre un corps de pompe entièrement en céramique en un arbre revêtu de métal inoxydable. In many cases, it is also possible to use a combination of ceramic materials and stainless metals, for example, a stainless seal between a fully ceramic pump body in a shaft coated with stainless metal.

Une telle installation, construite suivant les directives de l'invention ne peut pas brûler. Such an installation, built in accordance with the directives of the invention cannot burn.

Des installations de ce genre ne font pas courir de risques pour des hommes et des appareils techniques précieux. Installations of this kind do not pose a risk to humans and precious technical equipment.

Claims (4)

REVENDICATIONS 10) Installtion pour le transport et/ou la compression de l'oxygène, par.exemple, pompe du compresseur, caractérisé en ce que cette installation est construite essentiellement avec des matériaux qui ne peuvent brûler dans l'oxygène. 10) Installation for the transport and / or compression of oxygen, for example, compressor pump, characterized in that this installation is constructed essentially from materials which cannot burn in oxygen. 20) Installation suivant la revendication 1, caractérisé en ce qu'elle est fabriquée, pour l'essentiel, en matériaux céramiques, ou revêtus de céramique. 20) Installation according to claim 1, characterized in that it is made, essentially, of ceramic materials, or coated with ceramic. 30) Installation suivant la revendication 1, caractérisé en ce qu'elle est établie, pour l'essentiel, en métaux inoxydables, et/ou en alliages de métaux inoxydables, et/ou en matériaux revêtus de métaux inoxydables. 30) Installation according to claim 1, characterized in that it is established, essentially, in stainless metals, and / or in alloys of stainless metals, and / or in materials coated with stainless metals. 40) Installation suivant la revendication 1, caractérisée en ce qu'elle est réalisée pour l'essentiel à partir d'une combinaison des matériaux en céramique ou revêtus de céramique, en acier inoxydable ou revêtus d'acier inoxydable.  40) Installation according to claim 1, characterized in that it is essentially made from a combination of ceramic materials or coated with ceramic, stainless steel or coated with stainless steel.
FR8715487A 1986-11-10 1987-11-09 INSTALLATION FOR THE TRANSPORT AND / OR COMPRESSION OF OXYGEN IN PARTICULAR BY PUMP OR COMPRESSOR Expired FR2606464B3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863638244 DE3638244A1 (en) 1986-11-10 1986-11-10 Device for conveying and/or compressing oxygen

Publications (2)

Publication Number Publication Date
FR2606464A1 true FR2606464A1 (en) 1988-05-13
FR2606464B3 FR2606464B3 (en) 1989-02-10

Family

ID=6313563

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8715487A Expired FR2606464B3 (en) 1986-11-10 1987-11-09 INSTALLATION FOR THE TRANSPORT AND / OR COMPRESSION OF OXYGEN IN PARTICULAR BY PUMP OR COMPRESSOR

Country Status (3)

Country Link
CH (1) CH674400A5 (en)
DE (1) DE3638244A1 (en)
FR (1) FR2606464B3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19708825C2 (en) * 1997-03-05 2001-11-15 Deutsch Zentr Luft & Raumfahrt Device for conveying a medium

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099890A (en) * 1975-08-21 1978-07-11 Mitsui Mining & Smelting Co., Ltd. Impeller type pump having seal means and protective means

Also Published As

Publication number Publication date
FR2606464B3 (en) 1989-02-10
CH674400A5 (en) 1990-05-31
DE3638244A1 (en) 1988-05-11

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