CS201677B1 - Method of protection against penetration of wandering d.c. currents in the metal oblong structures - Google Patents
Method of protection against penetration of wandering d.c. currents in the metal oblong structures Download PDFInfo
- Publication number
- CS201677B1 CS201677B1 CS222978A CS222978A CS201677B1 CS 201677 B1 CS201677 B1 CS 201677B1 CS 222978 A CS222978 A CS 222978A CS 222978 A CS222978 A CS 222978A CS 201677 B1 CS201677 B1 CS 201677B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- metal
- protection against
- currents
- wandering
- enamel
- Prior art date
Links
- 239000002184 metal Substances 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 5
- 230000035515 penetration Effects 0.000 title 1
- 210000003298 dental enamel Anatomy 0.000 claims description 8
- 235000019353 potassium silicate Nutrition 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims 1
- 229910010271 silicon carbide Inorganic materials 0.000 claims 1
- 239000010425 asbestos Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
Description
Vynález se týká způsobu ochrany proti vnikání bludných stejnosměrných proudů na kovové podélné konstrukce, například potrubí, přes kovové podpěry upevněné na nosné konstrukci.The invention relates to a method of protection against the ingress of stray direct currents onto metal longitudinal structures, for example pipelines, through metal supports fastened to a supporting structure.
Dosud se chránily kovové podélné konstrukce proti vnikání bludných proudů tím, že se mezi mechanické pevné podpěry a kovovou podélnou konstrukci vkládala azbestová vložka nebo vložka z materiálu ferrodo pro obložení brzd.Up to now, the metal longitudinal structures have been protected against the ingress of stray currents by inserting an asbestos or ferrodo brake lining insert between the mechanical fixed supports and the metal longitudinal structure.
Tyto vložky mají zejména tu nevýhodu, že u azbestové tkaniny dochází k jejímu provlhnutí a tím ke ztrátě jejího izolačního účinku. Dále jak v případě vložky z azbestu, tak v případě ferroda nestačí tření mezi mechanickou pevnou podpěrou a kovovou podélnou konstrukcí k tomu, aby nedocházelo k podélnému posuvu kovové podélné konstrukce. Při její dilatací nebo kontrakci způsobené změnou teploty dochází proto ke zcela nežádoucímu pohybu potrubí.In particular, these inserts have the disadvantage that the asbestos fabric is soaked in moisture and thereby loses its insulating effect. Further, both in the case of the asbestos insert and in the case of the ferrode, the friction between the mechanical fixed support and the metal longitudinal structure is not sufficient to prevent longitudinal displacement of the metal longitudinal structure. Due to its dilatation or contraction caused by temperature change, the pipeline is completely undesirable.
Nedostatky odstraňuje způsob podle vynálezu, jehož podstata spočívá v tom, že plochy podpěry přiléhající ke kovové podélné konstrukci se opatří vrstvou smaltu o tlouštce minimálně 0,2 mm, jejíž povrch je zdrsněn minerálními částicemi o zrnění minimálně 0,2 mm.The drawbacks are eliminated by the method according to the invention, characterized in that the surfaces of the support adjacent to the metal longitudinal structure are provided with a layer of enamel with a thickness of at least 0.2 mm, the surface of which is roughened with mineral particles of at least 0.2 mm.
Vynález zabraňuje jakémukoliv pohybu potrubí při teplotních změnách, které se v potrubních linkách vyskytují, a to minimálně do 250 °C. Nemůže dojít k teplotní destrukci izolačního materiálu, neboť jak smalt, tak vyschlé vodní sklo takové destrukci nepodléhají. Adheze smaltu ke kovu mechanické pevné podpěry je vysoká. Rovněž tak adheze vyschlého vodního skla ke smaltu je vysoká a kromě toho zabraňuje mechanické destrukci smaltu.The invention prevents any movement of the pipeline during temperature changes occurring in the pipeline, at least up to 250 ° C. No thermal destruction of the insulating material can occur, since both enamel and dried water glass are not subject to such destruction. The adhesion of the enamel to the metal of the mechanical support is high. Likewise, the adhesion of the dried waterglass to the enamel is high and furthermore it prevents mechanical destruction of the enamel.
Příklad provedení vynálezu je znázorněn na výkrese.An embodiment of the invention is shown in the drawing.
Na výkrese je znázorněno potrubí 5 s objímkou 1, přitaženou šrouby 4 k podložce 2, při vařené k mechanické pevné podpěře 3.The drawing shows a pipe 5 with a sleeve 1, tightened by screws 4 to a support 2, when boiled to a mechanical fixed support 3.
Vynález byl proveden tak, že vrstva smaltu o tlouštce 0,3 mm spolu s vrstvou vyschlého vodního skla o tloušťce 0,2 mm, zdrsněnou přídavkem 60 hmotnostních dílů siliciumkarbidu, se nanesly na objímku 1 a na podložku 2, a to vždy na straně přilehlé k potrubí 5.The invention has been accomplished by applying a layer of enamel of 0.3 mm thickness together with a layer of dried water glass of 0.2 mm thickness, roughened by the addition of 60 parts by weight of silicium carbide, to the sleeve 1 and the support 2, respectively on the side adjacent to pipe 5.
Vynález lze použít všude tam, kde se montuje potrubí v kolektorech, eventuálně kde je pevně zachyceno k podpěrám.The invention can be used wherever pipelines are mounted in collectors or possibly firmly attached to supports.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS222978A CS201677B1 (en) | 1978-04-05 | 1978-04-05 | Method of protection against penetration of wandering d.c. currents in the metal oblong structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS222978A CS201677B1 (en) | 1978-04-05 | 1978-04-05 | Method of protection against penetration of wandering d.c. currents in the metal oblong structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS201677B1 true CS201677B1 (en) | 1980-11-28 |
Family
ID=5358800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS222978A CS201677B1 (en) | 1978-04-05 | 1978-04-05 | Method of protection against penetration of wandering d.c. currents in the metal oblong structures |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS201677B1 (en) |
-
1978
- 1978-04-05 CS CS222978A patent/CS201677B1/en unknown
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