EP0164355A1 - Sleeve for abutment against the external surface of a body - Google Patents

Sleeve for abutment against the external surface of a body

Info

Publication number
EP0164355A1
EP0164355A1 EP19840902620 EP84902620A EP0164355A1 EP 0164355 A1 EP0164355 A1 EP 0164355A1 EP 19840902620 EP19840902620 EP 19840902620 EP 84902620 A EP84902620 A EP 84902620A EP 0164355 A1 EP0164355 A1 EP 0164355A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
halves
medium
tapping
sleeve according
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.)
Withdrawn
Application number
EP19840902620
Other languages
German (de)
French (fr)
Inventor
Leif Gunnarsson
Rune NYSTRÖM
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0164355A1 publication Critical patent/EP0164355A1/en
Withdrawn legal-status Critical Current

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

Definitions

  • Sleeve for abutment against the external surface of a body.
  • the present invention relates to a sleeve for abutment against the external surface of a body.
  • the body primarily intended is a pipe for transporting various media.
  • the media may be in liquid, gas or powder form, the powder being preferably kept flowing by means of a fluidized bed. How ever well the joints along a pipeline are-sealed, there may be a certain amount of leakage. Defects in the pipeline may also occur, also giving rise to leakage.
  • the object of the present invention is to enable elimination of such leakage as quickly as possible without having to dismantle damaging piping or pipe joins.
  • This is achieved according to the present invention by using a sleeve which can be placed over that part of a pipeline where there is a leak.
  • the sleeve having two internal, edge surfaces spaced from each other and together forming the inlet opening of the sleeve and in fact its only opening. The peripheral edges are brought into abutment with the surface of the leaking pipe.
  • the leakage is collected in the sleeve which is thus designed to collect medium which has leaked out into its outer periphery, irrespective of whether the sleeve surrounds a horizontal or vertical pipe, or one lying at an angle between these extreme positions.
  • the sleeve is provided with one or more tapping means, where medium which has flowed out can leave the sleeve, preferably of its own accord.
  • the sleeve may suitably be made having a cylindrical surrounding wall and two end surfaces, one end wall being conical and, seen from the inside, is arranged convexly.
  • the sleeve is provided at its peripheral edge with indications, for removing fragments of the sleeve wall so that it can be fitted to bodies of different dimensions with which the sleeve shall cooperate.
  • the sleeve is preferably made of two identical halves with securing means enabling them to be joined together in a simple manner.
  • the halves are preferably provided with radially outwardly directed securing flanges, the flanges on one side of the hole for the body passing through, for instance, being provided with holes and on the other side with pegs so that holes and pegs can cooperate.
  • Each half preferably has one or more flanges designed to completely or partly cover the joints arising where the two halves are joined.
  • FIG. 1 is a pipe with an end flange 2.
  • Said pipe with end flange is joined to a second pipe 3, also having an end flange 4.
  • the two pipes are then joined through the end flanges by screw joints 5. Even if the seal between the end flanges is good there is a risk of medium flowing out. To prevent this a sleeve is applied.
  • This consists of two halves 6 and 7.
  • the half 6 has a cylindrical surface 8, an upper end surface, not shown, and a lower end surface 10.
  • the end surface is conical and, seen from below, concave. At each end surface is a semi- circular opening, the lower of these being shown and designated 13.
  • the sleeve 6 formed by the surface 6 and ends, one of which is designated 10, is provided with two peripheral flanges 15 and 16 lying in the same plane.
  • the two peripheral flanges terminate at the circular recess and the flange 15 is provided at the rear with outwardly protruding securing pins while the flange 16 is provided with through-holes 17.
  • the upper end surface of the sleeve half 6 may be flat or it may be conical or arched, for instance. In the present case it is imagined to be conical and to be convex seen from the inside.
  • Sleeve half 6 is provided with a tapping nozzle 28 located so that as much medium as possible is removed from the sleeve half 6.
  • a drainage tube 29 is connected to the tapping nozzle.
  • Each circular opening in the two end surfaces of the sleeve half 6 is provided with indications so that fragments can be removed at each opening to fit the pipe with which it shall cooperate. This also means that the two flanges 15 and 16 must also be provided with indications for the removal of fragments of the flanges.
  • the left sleeve half is identical to the. right half and a repetition of the description is therefore unnecessary. Both halves are made in the same mould so that, for instance, the holes 17 and 21 will be opposite pegs 20. It can be seen clearly in the left sleeve half that each half is provided with a protruding flange 30 partly or wholly following the inner edge of the flange 18. The half 6 is thus also provided with a similar flange along the inner edge of flange 16. These flanges are intended to cover the join formed between the two halves 6 and 7 of the sleeve when they are joined together.
  • each tapping nozzle 26 and 28 is closed at its outer end. These nozzles are only opened when a drainage pipe 27 or 29, respectively, must be attached.
  • the shape of the two sleeve halves 6 and 7 makes them particularly suitable to application around a vertical pipe since the leaking medium moves immediately towards the bottom of the sleeve towards the edge located lower than the edge close to the pipe.
  • the bottom formed by parts 10 and 11 has an outwardly inclined surface.
  • the characteristic feature of the sleeve according to the invention is that, irrespective of its placing, medium leaking out of the pipe will flow as quickly as possible to the outer periphery of the sleeve, to its tapping nozzle, so as to leave the sleeve as quickly as possible.
  • the end surfaces 10 and 11 of the two sleeve halves 6 and 7 may of course being given any desired, shape provided that, when surrounding a vertical pipe, any medium flowing out passes towards the periphery of the sleeve.
  • the sleeve need not of course be applied only when leakage occurs. It can also be used to prevent leakage, but applying the sleeve at various critical points along a pipe where leakage might be suspected.
  • the present invention is of particular value for pipes transporting media which would cause environmental damage in the event of a leak.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Pipe Accessories (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

Dans des conduites (1 et 3) pour différents fluides il y a un risque de fuite au niveau des joints et des défauts. Afin de résoudre rapidement ce problème, un manchon (6 et 7) se composant de deux moitiés pourvues d'organes de fixation (17, 20, 21) est placé autour du point où a lieu la fuite.In pipes (1 and 3) for different fluids there is a risk of leakage at the seals and faults. In order to quickly solve this problem, a sleeve (6 and 7) consisting of two halves provided with fixing members (17, 20, 21) is placed around the point where the leak takes place.

Description

Sleeve for abutment against the external surface of a body.
The present invention relates to a sleeve for abutment against the external surface of a body. The body primarily intended is a pipe for transporting various media. The media may be in liquid, gas or powder form, the powder being preferably kept flowing by means of a fluidized bed. How ever well the joints along a pipeline are-sealed, there may be a certain amount of leakage. Defects in the pipeline may also occur, also giving rise to leakage.
The object of the present invention is to enable elimination of such leakage as quickly as possible without having to dismantle damaging piping or pipe joins. This is achieved according to the present invention by using a sleeve which can be placed over that part of a pipeline where there is a leak. The sleeve having two internal, edge surfaces spaced from each other and together forming the inlet opening of the sleeve and in fact its only opening. The peripheral edges are brought into abutment with the surface of the leaking pipe. The leakage is collected in the sleeve which is thus designed to collect medium which has leaked out into its outer periphery, irrespective of whether the sleeve surrounds a horizontal or vertical pipe, or one lying at an angle between these extreme positions.
According to a preferred embodiment of the. invention the sleeve is provided with one or more tapping means, where medium which has flowed out can leave the sleeve, preferably of its own accord.
It is advantageous to make the sleeve of transparent material in order to be able to determine the extent of leakage of the undesired medium from the pipe.
The sleeve may suitably be made having a cylindrical surrounding wall and two end surfaces, one end wall being conical and, seen from the inside, is arranged convexly. The sleeve is provided at its peripheral edge with indications, for removing fragments of the sleeve wall so that it can be fitted to bodies of different dimensions with which the sleeve shall cooperate.
The sleeve is preferably made of two identical halves with securing means enabling them to be joined together in a simple manner. The halves are preferably provided with radially outwardly directed securing flanges, the flanges on one side of the hole for the body passing through, for instance, being provided with holes and on the other side with pegs so that holes and pegs can cooperate.
Each half preferably has one or more flanges designed to completely or partly cover the joints arising where the two halves are joined.
Additional features of the present invention will be revealed in the following claims.
The present invention will be described more fully with reference to the accompanying drawing in which the figure shows a pipe for a medium, and two halves of a sleeve before being fitted together.
In the drawing 1 is a pipe with an end flange 2. Said pipe with end flange is joined to a second pipe 3, also having an end flange 4. The two pipes are then joined through the end flanges by screw joints 5. Even if the seal between the end flanges is good there is a risk of medium flowing out. To prevent this a sleeve is applied. This consists of two halves 6 and 7. The half 6 has a cylindrical surface 8, an upper end surface, not shown, and a lower end surface 10. The end surface is conical and, seen from below, concave. At each end surface is a semi- circular opening, the lower of these being shown and designated 13. The sleeve 6 formed by the surface 6 and ends, one of which is designated 10, is provided with two peripheral flanges 15 and 16 lying in the same plane. The two peripheral flanges terminate at the circular recess and the flange 15 is provided at the rear with outwardly protruding securing pins while the flange 16 is provided with through-holes 17. The upper end surface of the sleeve half 6 may be flat or it may be conical or arched, for instance. In the present case it is imagined to be conical and to be convex seen from the inside. Sleeve half 6 is provided with a tapping nozzle 28 located so that as much medium as possible is removed from the sleeve half 6. A drainage tube 29 is connected to the tapping nozzle. Each circular opening in the two end surfaces of the sleeve half 6 is provided with indications so that fragments can be removed at each opening to fit the pipe with which it shall cooperate. This also means that the two flanges 15 and 16 must also be provided with indications for the removal of fragments of the flanges.
The left sleeve half is identical to the. right half and a repetition of the description is therefore unnecessary. Both halves are made in the same mould so that, for instance, the holes 17 and 21 will be opposite pegs 20. It can be seen clearly in the left sleeve half that each half is provided with a protruding flange 30 partly or wholly following the inner edge of the flange 18. The half 6 is thus also provided with a similar flange along the inner edge of flange 16. These flanges are intended to cover the join formed between the two halves 6 and 7 of the sleeve when they are joined together.
During the manufacture of each hair, each tapping nozzle 26 and 28 is closed at its outer end. These nozzles are only opened when a drainage pipe 27 or 29, respectively, must be attached.
The shape of the two sleeve halves 6 and 7 makes them particularly suitable to application around a vertical pipe since the leaking medium moves immediately towards the bottom of the sleeve towards the edge located lower than the edge close to the pipe. The bottom formed by parts 10 and 11 has an outwardly inclined surface.
If the two sleeve halves are applied on a horizontal pipe, it should be evident that only one tapping nozzle need be opened and that it should be located lowermost in the sleeve.
The characteristic feature of the sleeve according to the invention is that, irrespective of its placing, medium leaking out of the pipe will flow as quickly as possible to the outer periphery of the sleeve, to its tapping nozzle, so as to leave the sleeve as quickly as possible.
There are obviously numerous embodiments fulfilling the concept of the invention as defined.
To avoid all possibility of misunderstanding, a manufacturing drawing of a sleeve according to the invention is enclosed, as well as two photographs showing a model thereof. Provided no difficulty arises in understanding the present invention, the latter manufacturing drawing and the photographs may be omitted. On the other hand, should it prove of value to include the matter of the latter documents, we are willing to file drawings revealing the matter shown therein.
The end surfaces 10 and 11 of the two sleeve halves 6 and 7 may of course being given any desired, shape provided that, when surrounding a vertical pipe, any medium flowing out passes towards the periphery of the sleeve.
The sleeve need not of course be applied only when leakage occurs. It can also be used to prevent leakage, but applying the sleeve at various critical points along a pipe where leakage might be suspected.
The present invention is of particular value for pipes transporting media which would cause environmental damage in the event of a leak.

Claims

1. Sleeve (6 and 7) for abutment against the external surface of a body (1 and 3) such as a pipe having arbitrary cross-section, abutment being by means of two peripheral edges (23-25) of the sleeve (6 and 7), said edges (23-25) spaced from each other and together forming the inlet opening of the sleeve (6-7) for the external surface of said body (1 and 3), the circumferential sleeve (6-7) being designed to collect medium flowing in undesired manner through the surface of said body (1 and 3) due to defects or insufficient sealing at a joint (2, 4 and 5), characterised in that the sleeve (6 and 7), irrespective of orientation between a purely vertical position of the body (1 and 3) and a purely horizontal position of said body (1 and 3) is so designed that the sleeve (6 and 7) collects medium flowing from the body (1 and 3) at its periphery, said medium leaves the sleeve (6 and 7) preferably by means of one or more tapping arrangements
(26 and 28), preferably by means of auto-tapping.
2. Sleeve, according to claim 1, characterised in that when surrounding a substantially vertical body (1 and 3), the sleeve (6 and 7) causes medium to flow radially outwardly towards the periphery of the sleeve (6 and 7).
3. Sleeve according to claim 2, characterised in that the sleeve (6 and 7). has a preferably cylindrical surrounding wall (8 and 9) and two end surfaces ( 10-12), at least one end wall (10 and 11) causing an outward flow direction, preferably at a through-hole for said body (6 and 7) with a vertical axis.
4. Sleeve according to claim 3, characterised in that at least one end wall (10 and 11) is conical, the end wall inside the sleeve (6 and 7) being convex.
5. Sleeve according to one or more of the preceding claims, characterised in that each tapping means (26 and 28) is arranged so that substantially all the medium collected in the sleeve (6 and 7) is preferably automatically removed from the sleeve (6 and 7).
6. Sleeve according to one or more of the preceding claims, characterised in that the sleeve (6 and 7) is transparent.
7. Sleeve according to one or more of the preceding claims, characterised in that the sleeve (6 and 7) is provided with indications (22) at the through-hole for removing fragments of the sleeve wall to produce an opening to fit the area of said body (1 and 3).
8. Sleeve according to one or more of the preceding claims, characterised in that the sleeve consists of two preferably identical halves (6 and 7) with joining means such as holes (17 and 21) and pegs (20) for the holes (17 and 21), the holes (17 and 21) and pegs (20) being located on either side of the recess intended for the body (1 and 3).
9. Sleeve according to claim 8, characterised in that each of the two halves (6 and 7) is provided with one or more flanges (30), completely or partly covering the joints between the two halves (6 and 7) when fitted together.
10. Sleeve according to claim 8, characterised in that each half (6 and 7) is provided with one or more outwardly directed flanges (15, 16 and 18, 19, respectively) with the aid of which the halves (6 and 7) are secured to each other.
EP19840902620 1983-07-13 1984-06-20 Sleeve for abutment against the external surface of a body Withdrawn EP0164355A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8303957A SE444474B (en) 1983-07-13 1983-07-13 CIRCUIT CONTAINER FOR BUILDING OUT OF THE OUTER MANTLE SURFACE TO A BODY
SE8303957 1983-07-13

Publications (1)

Publication Number Publication Date
EP0164355A1 true EP0164355A1 (en) 1985-12-18

Family

ID=20351963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840902620 Withdrawn EP0164355A1 (en) 1983-07-13 1984-06-20 Sleeve for abutment against the external surface of a body

Country Status (3)

Country Link
EP (1) EP0164355A1 (en)
SE (1) SE444474B (en)
WO (1) WO1985000417A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111442883A (en) * 2020-05-26 2020-07-24 无锡金百特自动化机械有限公司 Turbine air tightness detection device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2577301B1 (en) * 1985-02-13 1987-03-27 Pelletier Claude THE PRESENT INVENTION RELATES TO A DEVICE AGAINST LEAKS AND ALL LIQUIDS AND FLUIDS WITH RECOVERY OF SUCH LIQUIDS AND FLUIDS.
SE8700235D0 (en) * 1987-01-21 1987-01-21 Hakan Zandhers LECKAGEVARNARE
FR2738062B1 (en) * 1995-08-25 1997-10-24 Aerospatiale TEST INSTALLATION FOR SEALING DEVICES
AUPP936199A0 (en) * 1999-03-23 1999-04-15 Venardis, Nick John Pipe repair method
FR2810703B1 (en) * 2000-06-27 2003-05-30 Depagne SAFETY SHELL FOR NUT AND METHOD FOR CHECKING THE SEALING OF A PIPE CARRYING A NUT
FR2906007B1 (en) * 2006-09-19 2011-04-08 Ge Energy Products France Snc PROTECTIVE SYSTEM FOR CONTROLLING LIQUID LEAKS FROM PIPING FLANGES
GB2503429A (en) * 2012-06-25 2014-01-01 Christopher Kirk Tanner Pipe draining apparatus
NO345466B1 (en) * 2019-06-12 2021-02-15 Prosence As Apparatus, system and method for detecting a leakage of a fluid

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR974966A (en) * 1948-09-14 1951-02-28 Method and device for detecting and neutralizing leaks in pressurized pipes
US3563276A (en) * 1968-08-29 1971-02-16 Bonded Products Inc Pipe joint cocoon
CA1087530A (en) * 1977-09-12 1980-10-14 George W. Harrison Leak repair clamp
GB2080475A (en) * 1980-07-22 1982-02-03 Seaweld Divers Ltd Improvements relating to Apparatus and Methods of Mending Pipelines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8500417A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111442883A (en) * 2020-05-26 2020-07-24 无锡金百特自动化机械有限公司 Turbine air tightness detection device

Also Published As

Publication number Publication date
SE8303957D0 (en) 1983-07-13
WO1985000417A1 (en) 1985-01-31
SE444474B (en) 1986-04-14
SE8303957L (en) 1985-01-14

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19850301

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL

17Q First examination report despatched

Effective date: 19861103

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19880909