DE1951659A1 - Spacer for coaxial pipe systems - Google Patents
Spacer for coaxial pipe systemsInfo
- Publication number
- DE1951659A1 DE1951659A1 DE19691951659 DE1951659A DE1951659A1 DE 1951659 A1 DE1951659 A1 DE 1951659A1 DE 19691951659 DE19691951659 DE 19691951659 DE 1951659 A DE1951659 A DE 1951659A DE 1951659 A1 DE1951659 A1 DE 1951659A1
- Authority
- DE
- Germany
- Prior art keywords
- thread
- spacer
- spacer according
- held together
- sewing
- 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
Links
- 125000006850 spacer group Chemical group 0.000 title claims description 9
- 238000009958 sewing Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 210000003041 ligament Anatomy 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/027—Bands, cords, strips or the like for helically winding around a cylindrical object
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/12—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
- F16L59/125—Helical spacers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Laminated Bodies (AREA)
- Insulating Of Coils (AREA)
- Organic Insulating Materials (AREA)
Description
Kabel- und Metallwerke 1 1017Cable and metal works 1 1017
Gutehoffnungshütte Aktiengesellschaft 8. 10. I969Gutehoffnungshütte Aktiengesellschaft October 8, 1969
Abstandshalter für koaxiale Rohr systeme Zusatz zu Patent (Anm. P 17 75 ΛίΟ.8 Ι 9θ6) Spacer for coaxial pipe systems Addendum to patent (note P 17 75 ΛίΟ.8 Ι 9θ6)
Gegenstand des Hauptpatentes ist ein Abstandshalter für koaxiale Rohrsysteme mit einem zwischen den konzentrisch angeordneten Rohren bestehenden Temperaturgefälle, beispielsweise für ein in supraleitendem Zustand betriebenes elektrisches Kabel oder ein Rohrsystem für den Transport erwärmter oder gekühlter, flüssiger oder gasförmiger Medien, bei dem eine den Raum zwischen jeweils zwei Rohren zumindest an einzelnen Stellen längs des Rohrsystems ausfüllende Wendel aus lose übereinander angeordneten Bändern eines isolierenden Materials geringer thermischer Leitfähigkeit, die in Abständen zusammengehalten werden, vorgesehen ist. Hierdurch soll erreicht werden, daß sich die zahlreichen, lose übereinander liegenden Bänder einer solchen Wendel, die einen Bruchteil der geforderten Dicke der Wendel aufweisen und lediglich in bestimmten Abständen zusammengehalten werden, in den Zwischenstücken nur punkt- oder linienförmig berühren. Das hat zur Folge, daß Wärmebrücken lediglich an den statistisch verteilten Berührungsstellen zwischen den einzelnen Lagen gebildet werden, so daß die wärmeübertragende Gesamtfläche wesentlich reduziert wird. Darüber hinaus tritt an den Berührungsstellen der einzelnen lose übereinander liegenden Bänder durch Spaltwirkung ein Temperatursprung auf, so daß der Wärmewiderstand der Wendel weiter erhöht wird.The subject of the main patent is a spacer for coaxial pipe systems with a temperature gradient between the concentrically arranged pipes, for example for an electrical cable operated in a superconducting state or a pipe system for the transport of heated ones or cooled, liquid or gaseous media, in which one at least the space between two pipes individual points along the pipe system, consisting of loosely stacked strips of an insulating coil Material of low thermal conductivity, which in Be held together at intervals is provided. This is to ensure that the numerous, loose superimposed bands of such a helix, which have a fraction of the required thickness of the helix and are only held together at certain intervals, in the intermediate pieces only punctiform or linear touch. This has the consequence that thermal bridges only at the statistically distributed points of contact between the individual layers are formed so that the heat transferring Total area is significantly reduced. In addition, the individual loosely overlaps each other at the points of contact lying ligaments a jump in temperature due to the splitting effect so that the thermal resistance of the coil is further increased.
Die Erfindung befaßt sich mit einer weiteren vorteilhaften Ausgestaltung des Abstandshalters nach dem Hauptpatent und sieht vor, daß die Bänder durch einen durch sämtliche Ban-The invention is concerned with a further advantageous one Design of the spacer according to the main patent and provides that the bands by a through all bands
109818/0818109818/0818
der in Abständen hindurchgeführten Faden zusammengehalten sind. Die einzelnen Bänder können sich somit gegeneinander etwas verschieben. Das hat den Vorteil, daß man bei Bedarf die Wendel um den zu stützenden Leiter legen kann, ohne sie zu verdrillen. Die Bänder können auf handelsüblichen Maschinen^beispielsweise mit einer Stichlänge von etwa 20 mm/ vernäht werden. Falls die Bänder im kalten Zustand für das Nähen zu spröde sind, könnten die einzelnen Bänder in Weiterführung des Erfindungsgedankens vor dem Nähen beispielsweise in Vorwärmeöfen auf eine erhöhte Temperatur gebracht werden. Zweckmäßig weist die Nadel, mit der der Faden durch die Bän-P>: der geführt wird, einen größeren Durchmesser auf als der Faden. Dadurch werden die Reibkräfte des Fadens an den Bändern verringert und die Flexibilität bzw. die Verschiebbar-. keit der Bänder gegeneinander erhöht sich. Als Faden verwendet man vorzugsweise einen Kunststoffaden mit möglichst geringem Wärmeleitvermögen und einem möglichst geringen Reibungskoeffizienten gegen das Material der Bänder.which are held together at intervals of thread. The individual bands can thus shift slightly against each other. This has the advantage that, if necessary, the helix can be placed around the conductor to be supported without twisting it. The tapes can be sewn on commercially available machines ^ for example with a stitch length of about 20 mm /. If the tapes are too brittle for sewing in the cold state, the individual tapes could, in a continuation of the inventive concept, be brought to an elevated temperature, for example in preheating ovens, before sewing. Suitably, the needle to which the thread through the Ribbons-P>: is performed, a larger diameter than the thread. As a result, the frictional forces of the thread on the bands are reduced and the flexibility or the displaceable. The speed of the ligaments against each other increases. The thread used is preferably a plastic thread with the lowest possible thermal conductivity and the lowest possible coefficient of friction against the material of the tapes.
Die Erfindung sei an Hand des in der Figur als Ausführungsbeispiel dargestellten Abstandshalters erläutert. The invention will be explained with reference to the spacer shown in the figure as an exemplary embodiment.
Die einzelnen Bänder 5 werden an den Stellen 6, 7 und 8, b die vorzugsweise einen Abstand von 2 bis 20 cm aufweisen, * zusammengehalten. Hierzu wird ein Faden 9 verwendet, der mit einer handelsüblichen, nicht .dargestellten Vorrichtung durch die einzelnen Bänder 5 hindurchgeführt wird. Die Nadel dieser Vorrichtung sollte einen größeren Durchmesser als der Faden 9 haben, damit die Bänder 5 sich gut gegeneinander verschieben können· Als Material sowohl für die Bänder 5 als auch für den Faden 9 hat sich Polyamid als be- * sonders günstig erwiesen aufgrund seines geringen Reibungskoeffizienten und insbesondere seiner geringen.Wärme-- The individual bands 5 will preferably have a distance of 2 cm to 20 on the positions 6, 7 and 8, b * held together. For this purpose, a thread 9 is used, which is passed through the individual bands 5 with a commercially available device (not shown). The needle of this device should have a larger diameter than the thread 9, so that the bands 5 can move easily against each other. Polyamide has proven to be particularly favorable as a material for both the bands 5 and the thread 9 due to its small size Coefficient of friction and especially its low heat.
- 3 109818/0818 - 3 109818/0818
leitfähigkeit. Durch die Erfindung entsteht zwischen den Bändern 5» die sowohl mit glatter Oberfläche als auch geriffelt ausgeführt sein können, nur eine geringe Anzahl von Wär-mebrücKen, über die die Wärme auf den benachbarten Leiter fließen kann, so daß die erfindungsgemäße Wendel einen hohen Wärmewiderstand aufweist.conductivity. The invention creates between the Ribbons 5 »which have both a smooth surface and corrugated can be implemented, only a small number of thermal bridges, over which the heat to the neighboring Conductor can flow, so that the coil according to the invention has a high thermal resistance.
1 09818/0«11 09818/0 «1
Claims (4)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1951659A DE1951659C3 (en) | 1969-10-14 | 1969-10-14 | Spacer helix for coaxial pipe systems |
| AT671870A AT323268B (en) | 1968-08-08 | 1970-07-22 | SPACER FOR PIPE SYSTEMS MADE OF TWO OR MORE CONCENTRICAL PIPES |
| FR707031376A FR2060442B2 (en) | 1969-10-14 | 1970-08-27 | |
| US73688A US3670772A (en) | 1969-10-14 | 1970-09-21 | Spacing in coaxial tubes system |
| GB48623/70A GB1269175A (en) | 1969-10-14 | 1970-10-13 | Spacers for coaxial tube assemblies |
| CA095566A CA936463A (en) | 1969-10-14 | 1970-10-14 | Spacing in coaxial tubes system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1951659A DE1951659C3 (en) | 1969-10-14 | 1969-10-14 | Spacer helix for coaxial pipe systems |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE1951659A1 true DE1951659A1 (en) | 1971-04-29 |
| DE1951659B2 DE1951659B2 (en) | 1978-11-30 |
| DE1951659C3 DE1951659C3 (en) | 1979-08-16 |
Family
ID=5748108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1951659A Expired DE1951659C3 (en) | 1968-08-08 | 1969-10-14 | Spacer helix for coaxial pipe systems |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3670772A (en) |
| CA (1) | CA936463A (en) |
| DE (1) | DE1951659C3 (en) |
| FR (1) | FR2060442B2 (en) |
| GB (1) | GB1269175A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3809128A (en) * | 1969-10-24 | 1974-05-07 | Bridgestone Tire Co Ltd | Floating and submerging controllable hose |
| DE2547423A1 (en) * | 1975-10-23 | 1977-04-28 | Kabel Metallwerke Ghh | SPACER FOR COAXIAL PIPE SYSTEMS WITH A TEMPERATURE DANGER BETWEEN THE CONCENTRICALLY ARRANGED PIPES |
| US4161966A (en) * | 1975-10-23 | 1979-07-24 | Kabel-Und Metallwerke Gutehoffnungshutte Aktiengesellschaft | Spacer for coaxial tube systems |
| US4121623A (en) * | 1976-07-02 | 1978-10-24 | Kabel-Und Metallwerke Gutehoffnungshutte | Spacer for concentric tubes |
| US6405974B1 (en) * | 1998-08-12 | 2002-06-18 | F. John Herrington | Ribbed core dual wall structure |
| US20070034274A1 (en) * | 2000-07-27 | 2007-02-15 | Proteus, Inc. | Extrusion apparatus |
| DE10137552C1 (en) * | 2001-08-01 | 2003-01-30 | Karlsruhe Forschzent | Apparatus comprises cryo-generator consisting of cooling device having regenerator and pulse tube with heat exchangers arranged between them |
| US20060196568A1 (en) * | 2005-01-10 | 2006-09-07 | Leeser Daniel L | Flexible, compression resistant and highly insulating systems |
| GB2442209B (en) * | 2006-09-28 | 2012-01-18 | Probe Scient Ltd | Molecular exchange device |
| GB2457468B (en) * | 2008-02-13 | 2012-11-21 | Probe Scient Ltd | molecular exchange device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1691793A (en) * | 1928-03-26 | 1928-11-13 | William E Wine | Slope sheet and method of making the same |
| US3332446A (en) * | 1964-05-15 | 1967-07-25 | Douglas B Mann | Cryogenic transfer line arrangement |
| US3592238A (en) * | 1969-08-25 | 1971-07-13 | Kabel Metallwerke Ghh | Spacer for coaxial pipes |
| US3563198A (en) * | 1969-12-31 | 1971-02-16 | Nasa | Fabric for micrometeoroid protection garment |
-
1969
- 1969-10-14 DE DE1951659A patent/DE1951659C3/en not_active Expired
-
1970
- 1970-08-27 FR FR707031376A patent/FR2060442B2/fr not_active Expired
- 1970-09-21 US US73688A patent/US3670772A/en not_active Expired - Lifetime
- 1970-10-13 GB GB48623/70A patent/GB1269175A/en not_active Expired
- 1970-10-14 CA CA095566A patent/CA936463A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA936463A (en) | 1973-11-06 |
| GB1269175A (en) | 1972-04-06 |
| US3670772A (en) | 1972-06-20 |
| FR2060442B2 (en) | 1973-01-12 |
| DE1951659C3 (en) | 1979-08-16 |
| DE1951659B2 (en) | 1978-11-30 |
| FR2060442A2 (en) | 1971-06-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: KABELMETAL ELECTRO GMBH, 3000 HANNOVER, DE |
|
| 8340 | Patent of addition ceased/non-payment of fee of main patent |