DK150283B - HOLDER FOR LAKE CAGE DETECTOR IN ISOLATED PIPES - Google Patents
HOLDER FOR LAKE CAGE DETECTOR IN ISOLATED PIPES Download PDFInfo
- Publication number
- DK150283B DK150283B DK273481A DK273481A DK150283B DK 150283 B DK150283 B DK 150283B DK 273481 A DK273481 A DK 273481A DK 273481 A DK273481 A DK 273481A DK 150283 B DK150283 B DK 150283B
- Authority
- DK
- Denmark
- Prior art keywords
- holder
- wire
- pipe
- sleeve
- isolated pipes
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
- G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Insulating Bodies (AREA)
Description
150283150283
Den foreliggende opfindelse angår en holder for lækagedetektor og af den i krav l's indledning angivne art.The present invention relates to a leak detector holder and of the kind specified in the preamble of claim 1.
Hvis sådanne rørledninger gennemstrømmes af en væske, eksempelvis varmt vand, vil en lækage i stålinderrøret medføre, at materialet i mellemlaget gennemfugtes nær lækagen.If such pipelines flow through a liquid, for example hot water, a leakage in the steel pipe will cause the material in the intermediate layer to permeate near the leak.
Når fugtigheden den indstøbte tråd, kan dette erkendes elektrisk ved hjælp af et passende måleudstyr, og lækagens placering kan bestemmes.When the moisture enters the embedded wire, this can be detected electrically by an appropriate measuring device and the location of the leak can be determined.
Hidtil har det forvoldt betragtelige vanskeligheder ved fremstillingen af de enkelte rørstykker at fastholde tråden under., opskumningen af mellemlaget på en sådan måde, at tråden bibeholder den ønskede stilling i umiddelbar nærhed af formstofyderrøret uden at komme i berøring med stålinderrøret.Heretofore, it has caused considerable difficulty in the manufacture of the individual tubes to retain the thread underneath, the foaming of the interlayer in such a way that the thread retains the desired position in the immediate vicinity of the plastic outer tube without contacting the steel tube.
For at rørstykkerne kan samles på brugsstedet, rager stålinderrøret i begge rørstykkeender ud over mellemlag og formstofyderrør, så naborørstykkernes inderrør kan sammensvejses. Over nabostykkernes yderrør påsættes derefter en muffe og i rummet mellem denne og inderrørene opskummes polyurethan. På grund af denne udformning må der ved enderne af rørstykkerne også findes forråd af lækagedetekterende tråd, for at trådene ved enderne af to naborør kan forbindes ledende med hinanden. Denne ved rørstykkernes ender udragende tråd kan let beskadiges under transport og/eller nedlægning af rørstykkerne.In order for the pipe pieces to be assembled at the point of use, the steel pipe at both ends of the pipe project extends beyond the intermediate layers and the plastic outer pipe, so that the inner pipe of the neighboring pipe can be welded together. A sleeve is then fitted over the outer tubes of the neighboring pipes and in the space between this and the inner tubes polyurethane is foamed. Because of this design, at the ends of the pipe pieces there must also be stock of leak detecting wire in order for the wires at the ends of two neighboring pipes to be conductively connected to each other. This wire protruding at the ends of the tubes can easily be damaged during transport and / or laying of the tubes.
Formålet med den foreliggende opfindelse er at afhjælpe disse ulemper og anvise en holder, der gør det muligt på enkel måde at udspænde tråden således, at dens placering ikke ændres i forbindelse med opskumningen af po-lyurethanet, hvorhos holderen skal kunne anvendes til forskellige rør- og tråddimensioner og kunne beskytte de udragende trådender under transport og nedlægning af rørstykkerne .The object of the present invention is to remedy these disadvantages and to provide a holder which allows for easy tensioning of the wire so that its location is not changed in connection with the foaming of the polyurethane, the holder being used for various tubes. and wire dimensions and could protect the protruding thread ends during transport and laying of the pipe pieces.
Dette opnås ifølge opfindelsen ved hjælp af en holder, der er ejendommelig ved den i krav l's kendetegnende del omhandlede udformning.This is achieved according to the invention by means of a holder which is characterized by the design according to the characterizing part of claim 1.
2 150283 Bøsningen kan ved hjælp af klemmen påsættes et vilkårligt ønsket sted langs omkredsen afyderrørsenden, og klemmens elasticitet tillader, at holderen benyttes i forbindelse med forskellige yderrørvægtykkelser. Ved anbringelsen påses det naturligvis, at de to bøsninger i hver ende af rørstykket anbringes ved samme rørvægsfrembringer. Når tråden er ført gennem de to bøsningbundes huller, strammes den op og fastklemmes i de to holdere ved hjælp af de indskydelige skåle. Herved er trådens stilling under opskum-ningen fastlagt. Endvidere er der i bøsningens indre tilstrækkelig plads til at rumme det ønskede trådforråd for senere anvendelse ved forbindelse af to rørstykker. Den afrundede overgang mellem skålens bund og sidevæg sikrer, at tråden ikke beskadiges ved fastklemningen i bøsningen.By means of the clamp, the sleeve can be applied to any desired location along the circumference of the end tube and the elasticity of the clamp allows the holder to be used in connection with various outer tube wall thicknesses. Of course, during the placement, it is ensured that the two bushings at each end of the pipe section are placed at the same pipe wall generator. When the thread is passed through the holes of the two bushing bottoms, it is tightened and clamped in the two holders by means of the sliding bowls. Hereby, the position of the wire during the foaming is determined. Furthermore, there is sufficient space in the sleeve interior to accommodate the desired wire storage for later use when connecting two pipe pieces. The rounded transition between the bottom of the bowl and the side wall ensures that the thread is not damaged by clamping in the bushing.
.. Skålen hindrer endvidere, at der under opskumningen trænger polyurethan ind i bøsningen... The bowl further prevents polyurethane from entering the bush during foaming.
Ifølge opfindelsen er det fordelagtigt, at bøsningen er lukket ved hjælp af et låg til yderligere beskyttelse af det i bøsningen indeholdte trådforråd.According to the invention, it is advantageous for the sleeve to be closed by means of a lid for further protection of the wire stock contained in the sleeve.
Det er ifølge opfindelsen yderligere fordelagtigt, at hullet i bøsningens bund er forsat mod klemmen fra bundens midte. Herved vil tråden løbe ekstremt tæt på yderrøret, så der så tidligt som muligt opnås en indikation af mekanisk beskadigelse udefra.It is further advantageous according to the invention that the hole in the bottom of the sleeve is set against the clamp from the middle of the bottom. In this way, the thread will run extremely close to the outer tube, so that as soon as possible an indication of mechanical damage is obtained from the outside.
For at opnå bedst mulig forankring af bøsningen i det omstøbte mellemlag er det ifølge opfindelsen fordelagtigt, at bøsningen ved bundens yderside har tværribber.In order to obtain the best possible anchoring of the bushing in the molded intermediate layer, it is advantageous according to the invention that the bushing has outer ribs at the outside of the bottom.
Opfindelsen skal i det følgende forklares nærmere i forbindelse med tegningen, hvor fig. 1 viser et aksialsnit gennem en holder ifølge opfindelsen, fig. 2 holderen, set i pilens A retning i fig. 1, og fig. 3 et rørstykke med to holdere og en lækagedetek- terende tråd i perspektiv og delvis gennemskåret. Holderen, hvoraf der benyttes en i hver ende af et rørstykke 2, omfatter, som vist i fig. 1, en bøsning 1, der i den ene ende har en bund 4 med et hul 3 og i den anden ende er forsynet med en klemme 5. Til hver bøsning 1 hører en som et stempel i bøsningen 1 indskydelig skål 6, hvis bund 7 går over i sidevæggene 8 via en runding.BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be explained in more detail in connection with the drawing, in which 1 shows an axial section through a holder according to the invention; FIG. 2 in the direction of arrow A in FIG. 1, and FIG. 3 shows a pipe piece with two holders and a leak-detecting wire in perspective and partially cut through. The holder, which uses one at each end of a pipe piece 2, comprises, as shown in FIG. 1, a sleeve 1 having at one end a bottom 4 with a hole 3 and at the other end is provided with a clamp 5. To each sleeve 1 there is a bowl 6 which is removable bowl 6, whose bottom 7 passes into the side walls 8 via a rounding.
150283 10.10.
3 Bøsningen 1 kan endvidere lukkes ved hjalp af et låg Bøsningskal og låg fremstilles fordelagtigt af plast, som også giver den for fastklemning af tråden fornødne elasticitet.3 The sleeve 1 can also be closed by means of a lid. The sleeve shell and lid are advantageously made of plastic, which also provides the elasticity necessary for clamping the thread.
Det i fig. 3 viste rørstykke 2 omfatter et stål-inderrør 11, et formstofyderrør 12 og et mellemlag 13 af polyurethanskum. Til under opskumningen at fastholde en lækagedetekterende tråd 14 i den ønskede stilling nær yderrøret 12 er en holder ved hjælp af klemmen 5 påsat yderrøret i hver ende af rørstykket ved samme frembringer.The FIG. 3 shows a steel inner tube 11, a plastic outer tube 12 and an intermediate layer 13 of polyurethane foam. In order to maintain a leak-detecting wire 14 in the desired position near the outer tube during foaming, a holder is secured to the outer tube by means of the clamp 5 at each end of the pipe piece by the same generator.
Tråden 14 indføres i de to bøsninger gennem hullerne 3, strammes op og fastklemmes ved hjælp af skålene 6. Den udragende ende af tråden 14 anbringes inde i bøsningen 1, inden denne eventuelt lukkes med låget 10. Herefter kan opskumningen af mellemlaget 13 foretages, uden at der er risiko for, at tråden 14 ændrer stilling.The wire 14 is inserted into the two bushes through the holes 3, tightened and clamped by the cups 6. The protruding end of the wire 14 is placed inside the bushing 1, before being closed with the lid 10. Thereafter, the foaming of the intermediate layer 13 can be done without that there is a risk that the wire 14 will change position.
Som vist i fig. 2 er bøsningen 1 ved bunden forsynet med tværribber 15, der sikrer en god forankring af bøsningen i skumstoflaget, og hullet 3 i bunden 4 er fra bundens midte forsat mod klemmen 5 til opnåelse af en placering af tråden 14 så tæt på yderrøret 12 som muligt.As shown in FIG. 2, the bushing 1 at the bottom is provided with cross ribs 15 which ensure a good anchoring of the bushing in the foam layer, and the hole 3 in the bottom 4 is positioned from the middle of the bottom against the clamp 5 to obtain a position of the wire 14 as close to the outer tube 12 as possible. .
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT327080 | 1980-06-23 | ||
AT327080A AT364585B (en) | 1980-06-23 | 1980-06-23 | BRACKET FOR THE LEAK DETECTOR WIRE ON INSULATED PIPELINES |
Publications (3)
Publication Number | Publication Date |
---|---|
DK273481A DK273481A (en) | 1981-12-24 |
DK150283B true DK150283B (en) | 1987-01-26 |
DK150283C DK150283C (en) | 1987-11-09 |
Family
ID=3547994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK273481A DK150283C (en) | 1980-06-23 | 1981-06-22 | HOLDER FOR LEAK PAGE DETECTOR IN ISOLATED PIPE PIPES |
Country Status (3)
Country | Link |
---|---|
AT (1) | AT364585B (en) |
DE (1) | DE3116747C2 (en) |
DK (1) | DK150283C (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT408691B (en) * | 1997-01-03 | 2002-02-25 | Egger K Kunststoffwerk | Leakage sensor for pipelines carrying hot water or the like |
US5905194A (en) * | 1997-11-21 | 1999-05-18 | Strong; Thomas P. | Pipe line with integral fault detection |
-
1980
- 1980-06-23 AT AT327080A patent/AT364585B/en not_active IP Right Cessation
-
1981
- 1981-04-28 DE DE19813116747 patent/DE3116747C2/en not_active Expired
- 1981-06-22 DK DK273481A patent/DK150283C/en active
Also Published As
Publication number | Publication date |
---|---|
DK150283C (en) | 1987-11-09 |
DK273481A (en) | 1981-12-24 |
AT364585B (en) | 1981-10-27 |
ATA327080A (en) | 1981-03-15 |
DE3116747A1 (en) | 1982-08-12 |
DE3116747C2 (en) | 1984-09-27 |
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