CA2080060A1 - Method of and device for temporarily inserting a device into a buried pipeline - Google Patents
Method of and device for temporarily inserting a device into a buried pipelineInfo
- Publication number
- CA2080060A1 CA2080060A1 CA002080060A CA2080060A CA2080060A1 CA 2080060 A1 CA2080060 A1 CA 2080060A1 CA 002080060 A CA002080060 A CA 002080060A CA 2080060 A CA2080060 A CA 2080060A CA 2080060 A1 CA2080060 A1 CA 2080060A1
- Authority
- CA
- Canada
- Prior art keywords
- pipeline
- quill
- fluid
- excavation
- buried
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000012530 fluid Substances 0.000 claims description 24
- 238000009412 basement excavation Methods 0.000 claims description 23
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 5
- 239000000523 sample Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
- G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/10—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with inflatable member
-
- 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow in pipes or hoses
- F16L55/12—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/124—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced radially into the pipe or hose
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pipe Accessories (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A method of and a device for temporarily inserting an apparatus into a buried pipeline, the device comprising a quill to be inserted into a borehole and comprising a lock at its top part, expansible chambers associated with the inner wall of the quill and a head mounted at the bottom part of the quill to provide a sealed connection between the latter and a pipeline buried in the ground and in which an apparatus should be temporarily inserted via the quill.
A method of and a device for temporarily inserting an apparatus into a buried pipeline, the device comprising a quill to be inserted into a borehole and comprising a lock at its top part, expansible chambers associated with the inner wall of the quill and a head mounted at the bottom part of the quill to provide a sealed connection between the latter and a pipeline buried in the ground and in which an apparatus should be temporarily inserted via the quill.
Description
The present invention relates essentially to a method of temporarily inserting an apparatus into a buried or underground pilpeline .
It is also directed to a device for implementing or carrying out this method.
To accede into the inside of a pipeline under load which has for instance to be temporarily shut off for allowing to operate upon said pipeline, it is already known to proceed in the following way :
_ at first a more or less large excavation or pit is provided in the ground by means of a conventional digging tool or earthmoving gear until the pipeline or main has been brought to light or disclosed ;
- a member forming a lock is fastened onto the pipeline ;
- the pipeline is then drilled or bored through by means of a suitable tool and this through the lock whereby the communication of the fluid flowing within the pipeline with the outer atmosphere through the excavation is prevented ; and - a contrivance which may be an inflatable balloon capable of temporarily stopping or blanking off the pipeline is inserted into the pipeline through the pierced hole.
It is therefore understood that the main problem which is set here is to perforate the pipeline under load for then inserting for example an obturator therein from the ground surface, all these operating steps having to be performed with any incontrollable evolving or leakage of fluid which may be gas for instance.
Now the engineering art previously set forth is far from being satisfactory with respect to the swiftness of performance as well as to the costs. More specifically the insertion of the apparatus such as an obturating balloon into the pipeline previously drilled through is a tricky operation sometimes long to be carried out more especially as the obturating balloon should be inserted into the pipeline upstream, i.e. against or in opposition to the direction of flow or the pressure of the fluid flowing within the pipeline. Moreover it is appreciated that the operation may be hazardous or dangerous for the staff or workmen since the inserting step in spite of the lock may cause the fluid to leak outwards to the atmosphere. Likewise the placement of the lock onto the pipeline is difficult and the excavation for laying bare the pipeline should be relatively substantial to facilitate the operation thereby requiring a non negligible time and labour expenses.
Therefore the object of the present invention is to cope with these inconveniences by providing a method and a device permitting the temporary insertion of an apparatus in a pipeline under load and this in a reliable and quick manner.
For that purpose the subject of the invention is a method of temporarily inserting any contrivance whatsoever into a buried pipeline in which is flowing a fluid such for example as gas and of the type consisting in carrying out in the ground an excavation until disclosure of the pipeline, drilling said pipeline through with the assistance of a tool and this by using means preventing the communication of the fluid within the pipeline with the outer atmosphere through the excavation and inserting into said pipeline any apparatus whatsoever through the hole drilled therein, characterized by the following steps performed after having made the excavation :
- arranging therein a sleeve-like case or quill comprising the aforesaid means preventing any communication of the fluid within the pipeline with the outer atmosphere via the excavation ;
- securing said sleeve or quill to the inner wall of the excavation ;
- providing a fluid-tight connection between the quill and the pipeline ;
- performing the drilling of the pipeline after insertion and passage of the tool into the inside of the quill ; and - passing the apparatus into the quill for inserting it into the pipeline.
It is thus already understood that the initial placement within the excavation of a sleeve-like case or quill itself comprising means capable of preventing any fluid leakage into the outer atmosphere and providing for a fluid-tight or sealed connection between the quill and the pipeline would greately facilitate all the operating steps which will be carried out through the quill.
According to another characterizing feature of this method the fluid~tight connection between the quill and the pipeline is provided by means of a polymerizable material.
It should further be specified here that before inserting the apparatus into the pipeline, there is inserted therein via the quill a system determining the direction of flow of the fluid within the pipeline.
After withdrawal of the apparatus from the pipeline via the quill it will advantageously be possible to pass into the quill a system for stopping up or filling in the hole drilled into the pipeline.
The invention is also directed to a device for carrying out the method meeting the characterizing features referred to hereinabove, this device essentially comprising a sleeve-like case or quill adapted to be inserted into an excavation, a borehole or the like and comprising at the upper part a lock, expansible means such as inflatable chambers associated with the external wall of the quill and a head removably or fixedly mounted at the lower part of the quill to permit to carry out the fluid-tight connection between the latter and a pipeline buried into the ground.
This device is further characterized in that the internal diameter of the quill is adapted to permit the passage of any apparatus whatsoever to be inserted into the pipeline such for example as an element capable of obturating the latter and of the kind forming a balloon, a camera, a probe or other type of apparatus.
The internal diameter of the quill is also adapted to allow the passage and the withdrawal of a system permitting the piercing of the pipeline, the determination of the direction of flow of the fluid within the pipeline and the obturating of the perforation in the latter.
It should further be specified here that the quill head removably or non-removably mounted at the bottom portion thereof consists of a sealing joint for example made from a polymerizable material.
This sealing joint may be positioned between the lower end portion of the quill and the pipeline by means of a tooling passing into the inside of the quill.
The invention will be better understood and further objects, characterizing features, details and advantages thereof will appear better as the following explanatory description proceeds with reference to the accompanying diagrammatic drawings given by way of non limiting example only and illustrating a presently preferred specific embodiment of the invention and in which :
- Figure 1 is a diagrammatic view in axial section of a quill set into a borehole and containing a device for the insertion of an inflatable balloon shown in the position of obturation of a pipeline under load ;
- Figure 2 is a partial view in axial section of the quill containing a tool for drilling the pipeline ;
- Figure 3 is still a fragmentary view in axial section of the quill into which is inserted a system for the determination of the direction of flow of the fluid within the pipeline ; and - Figure 4 is still a partial view in axial section of the quill in the position installed within the borehole and into which has been inserted a system for stopping up the perforation in the pipeline, which stopping up is carried out after any operation whatsoever performed on said pipeline.
Referring to the figures there is seen an excavation 1 formed into the ground S by means of a suitable equipment diagrammatically shown at 2 and which may be a light equipment owing to the fact that the device according to this invention requires a not very large excavation 1 only or also the existence of a borehole of relatively small section.
According to the invention, into the hole 1 allowing to disclose or bring to light a pipeline C conveying a fluid such as gas is inserted a quill 2 the top portion of which is provided with a lock diagrammatically shown at 3 and arranged between two gates or valves (not shown). The usefulness of such a lock will be explained later.
Underneath the lock 3 the outside wall of the quill 2 is provided with one or several expansible and possibly inflatable chambers 4.
At last at the bottom portion 5 of the quill 2 is provided a head 6 allowing to make a fluid-tight connection of the quill 2 to the pipeline C and which may be removably or non-removably mounted onto the lower portion 5 of the quill 2.
This head shown very diagrammatically at ~ may consist of a sealing joint mounted on the bottom part 5 of the quill 2.
This sealing joint may for example be made from a polymerizable material and if it is not permanently fastened to the lower portion 5 of the quill 2, it may be provided by means of any suitable tool (not shown) whatsoever inserted into the quill 2 once the latter has been inserted into the excavation or hole 1.
Into the quill 2 as seen on figure 2 may be inserted a rotary drilling tool 7 capable of providing a hole 8 into the wall 9 of the pipeline C.
Likewise as seen on figure 1 it is possible to insert into the quill 2 an equipment consisting essentially of a rod 10 with an end piece 11 to which is fastened at 12 an element for temporarily obturating the pipeline C, which element here takes the shape of an inflatable balloon.
Instead of the inflatable balloon 13, it could quite be possible and without departing from the scope of the invention to couple the end piece 11 of the rod 10 to another apparatus such for example as a camera for inspecting the pipeline C or a probe or also any other kind of apparatus.
As it clearly appears from figure 3 the internal diameter of the quill 2 may be adapted to also allow the passage of a system 14 for sensing the direction of flow within the pipeline C. Such a detection indeed is important to the extent where the pipeline 6 has to be obturated by means of an obturating balloon such as 13 which should necessarily be inserted upstream, i.e.
against or in opposition to the pressure exerted by the fluid so as to prevent any fluid leakage towards the outer atmosphere via the perforation 8. The detection system 14 essentially comprises a rod 15 at the end of which is provided a sensor 16 detecting the direction of flow of the fluid within the pipeline C. The other end of the system 14 is connected by a wiring to a box 17 displaying the result of the detection.
On figure 4 has been shown a tooling 18 carried by a rod insertable into the quill 2. The tooling 18 allows to stop up or to fill in the hole 8 drilled into the pipeline C after the balloon 13 has been withdrawn from the quill 2 once the desired operation on the pipeline has been performed.
Now for a better understanding of the invention, there will be explained hereinafter how are working the elements described hereinabove to permit the temporary obturation of the pipeline in order to carry out on the latter any operation or repair whatsoever.
There is at first provided an excavation or hole of reduced size in the ground S by means of the equipment 2 so as to disclose the external wall 9 of the pipeline C.
Then the quill 2 is inserted into the hole 1, which quill comprises as previously explained the lock 3, the expansible chambers 4 and possibly the head 6 providing a sealed connection with the pipeline.
The expansible chambers 4 connected to a source of compressed air (not shown) for example are inflated or expanded to thus provide upon bearing against the inner wall of the hole 1 a quick blocking of the quill 2 within said hole.
The bottom end 5 of the quill 2 provides owing to the head 6 a fluid-tight connection between the quill and the pipeline to the extent where said head is initially made fast to the quill. If this is not the case it will be possible to insert a suitable tooling (not shown) via the inside of the quill 2 to provide the sealed junction involved between the lower part 5 of the quill 2 and the pipeline C.
Then owing to the tooling 7 (figure 2) inserted into the quill 2 via the lock 3, the hole o in the pipeline C is drilled and then said tooling is withdrawn from the quill 2.
The system 14 (figure 3) is then inserted into the quill 2 via the lock 3 and the detection probe 1~ entering the pipeline C through the hole ~ allows to determine the direction of flow of the fluid within said pipeline, whereafter the said system 14 is withdrawn from the quill 2.
At this stage the obturating balloon 13 may be inserted into the pipeline C via the lock 3 owing to the rod 10 which carries it. The obturating balloon 13 will be inserted towards the right-hand side of figure 1, i.e. against the pressure exerted by the fluid flowing within the pipeline C as physically shown by the arrow F.
The obturating balloon 13 will then be inflated by means of a suitable source of compressed air for example to temporarily obturate the pipeline C as well visible on figure 1 and the staff will then be able to perform any desirable operation on the pipeline C.
Once the staff intervening has been completed the obturating balloon 13 will be deflated and the rod 10 carrying said balloon will be withdrawn from the quill 2 via the drilled hole ~ and the lock 3.
The perforation 8 may then be stopped up or filled in by means of a plug for example owing to the tooling diagrammatically shown at 18 on figure 4.
This having been done, the tooling 18 will be withdrawn from the quill necessarily and always via the lock 3, the expansible chambers 4 will be deflated and the quill 2 may thus be withdrawn from the hole 1 which will at last be filled.
There has thus been provided according to the invention a method of and a device for the temporary insertion of an apparatus into any buried pipeline whatsoever and this in a reliable, quick fashion without any danger for the staff having to perform an operation on the pipeline and without any discomfort or noise for the environment.
This method and this device may of course be used for all the programmed or emergency operations for intervening on the pipelines carrying gas for example in a town or other environment.
It should be understood that the invention is not at all limited to the embodiment described and illustrated which has been given by way of example only.
Thus the device according to the invention may permit the temporary insertion of any type of apparatus whatsoever into a buried pipeline and other than an obturating balloon. Likewise the head for the fluid-tight connection of the quill to the pipeline may be of any kind whatsoever as well as the number and the material of the expansible chambers providing for the temporary fastening of the quill within the excavation giving access to the pipeline on which an operation has to be performed. The quill may also form an unitary part or consist of several elements fittable into each other or telescopic in order that it thus may be adapted to the height of the excavation to be made.
This means that the invention comprises all the technical equivalents of the means described as well as their combinations if the latter are carried out according to its gist and within the scope of the appendant claims.
It is also directed to a device for implementing or carrying out this method.
To accede into the inside of a pipeline under load which has for instance to be temporarily shut off for allowing to operate upon said pipeline, it is already known to proceed in the following way :
_ at first a more or less large excavation or pit is provided in the ground by means of a conventional digging tool or earthmoving gear until the pipeline or main has been brought to light or disclosed ;
- a member forming a lock is fastened onto the pipeline ;
- the pipeline is then drilled or bored through by means of a suitable tool and this through the lock whereby the communication of the fluid flowing within the pipeline with the outer atmosphere through the excavation is prevented ; and - a contrivance which may be an inflatable balloon capable of temporarily stopping or blanking off the pipeline is inserted into the pipeline through the pierced hole.
It is therefore understood that the main problem which is set here is to perforate the pipeline under load for then inserting for example an obturator therein from the ground surface, all these operating steps having to be performed with any incontrollable evolving or leakage of fluid which may be gas for instance.
Now the engineering art previously set forth is far from being satisfactory with respect to the swiftness of performance as well as to the costs. More specifically the insertion of the apparatus such as an obturating balloon into the pipeline previously drilled through is a tricky operation sometimes long to be carried out more especially as the obturating balloon should be inserted into the pipeline upstream, i.e. against or in opposition to the direction of flow or the pressure of the fluid flowing within the pipeline. Moreover it is appreciated that the operation may be hazardous or dangerous for the staff or workmen since the inserting step in spite of the lock may cause the fluid to leak outwards to the atmosphere. Likewise the placement of the lock onto the pipeline is difficult and the excavation for laying bare the pipeline should be relatively substantial to facilitate the operation thereby requiring a non negligible time and labour expenses.
Therefore the object of the present invention is to cope with these inconveniences by providing a method and a device permitting the temporary insertion of an apparatus in a pipeline under load and this in a reliable and quick manner.
For that purpose the subject of the invention is a method of temporarily inserting any contrivance whatsoever into a buried pipeline in which is flowing a fluid such for example as gas and of the type consisting in carrying out in the ground an excavation until disclosure of the pipeline, drilling said pipeline through with the assistance of a tool and this by using means preventing the communication of the fluid within the pipeline with the outer atmosphere through the excavation and inserting into said pipeline any apparatus whatsoever through the hole drilled therein, characterized by the following steps performed after having made the excavation :
- arranging therein a sleeve-like case or quill comprising the aforesaid means preventing any communication of the fluid within the pipeline with the outer atmosphere via the excavation ;
- securing said sleeve or quill to the inner wall of the excavation ;
- providing a fluid-tight connection between the quill and the pipeline ;
- performing the drilling of the pipeline after insertion and passage of the tool into the inside of the quill ; and - passing the apparatus into the quill for inserting it into the pipeline.
It is thus already understood that the initial placement within the excavation of a sleeve-like case or quill itself comprising means capable of preventing any fluid leakage into the outer atmosphere and providing for a fluid-tight or sealed connection between the quill and the pipeline would greately facilitate all the operating steps which will be carried out through the quill.
According to another characterizing feature of this method the fluid~tight connection between the quill and the pipeline is provided by means of a polymerizable material.
It should further be specified here that before inserting the apparatus into the pipeline, there is inserted therein via the quill a system determining the direction of flow of the fluid within the pipeline.
After withdrawal of the apparatus from the pipeline via the quill it will advantageously be possible to pass into the quill a system for stopping up or filling in the hole drilled into the pipeline.
The invention is also directed to a device for carrying out the method meeting the characterizing features referred to hereinabove, this device essentially comprising a sleeve-like case or quill adapted to be inserted into an excavation, a borehole or the like and comprising at the upper part a lock, expansible means such as inflatable chambers associated with the external wall of the quill and a head removably or fixedly mounted at the lower part of the quill to permit to carry out the fluid-tight connection between the latter and a pipeline buried into the ground.
This device is further characterized in that the internal diameter of the quill is adapted to permit the passage of any apparatus whatsoever to be inserted into the pipeline such for example as an element capable of obturating the latter and of the kind forming a balloon, a camera, a probe or other type of apparatus.
The internal diameter of the quill is also adapted to allow the passage and the withdrawal of a system permitting the piercing of the pipeline, the determination of the direction of flow of the fluid within the pipeline and the obturating of the perforation in the latter.
It should further be specified here that the quill head removably or non-removably mounted at the bottom portion thereof consists of a sealing joint for example made from a polymerizable material.
This sealing joint may be positioned between the lower end portion of the quill and the pipeline by means of a tooling passing into the inside of the quill.
The invention will be better understood and further objects, characterizing features, details and advantages thereof will appear better as the following explanatory description proceeds with reference to the accompanying diagrammatic drawings given by way of non limiting example only and illustrating a presently preferred specific embodiment of the invention and in which :
- Figure 1 is a diagrammatic view in axial section of a quill set into a borehole and containing a device for the insertion of an inflatable balloon shown in the position of obturation of a pipeline under load ;
- Figure 2 is a partial view in axial section of the quill containing a tool for drilling the pipeline ;
- Figure 3 is still a fragmentary view in axial section of the quill into which is inserted a system for the determination of the direction of flow of the fluid within the pipeline ; and - Figure 4 is still a partial view in axial section of the quill in the position installed within the borehole and into which has been inserted a system for stopping up the perforation in the pipeline, which stopping up is carried out after any operation whatsoever performed on said pipeline.
Referring to the figures there is seen an excavation 1 formed into the ground S by means of a suitable equipment diagrammatically shown at 2 and which may be a light equipment owing to the fact that the device according to this invention requires a not very large excavation 1 only or also the existence of a borehole of relatively small section.
According to the invention, into the hole 1 allowing to disclose or bring to light a pipeline C conveying a fluid such as gas is inserted a quill 2 the top portion of which is provided with a lock diagrammatically shown at 3 and arranged between two gates or valves (not shown). The usefulness of such a lock will be explained later.
Underneath the lock 3 the outside wall of the quill 2 is provided with one or several expansible and possibly inflatable chambers 4.
At last at the bottom portion 5 of the quill 2 is provided a head 6 allowing to make a fluid-tight connection of the quill 2 to the pipeline C and which may be removably or non-removably mounted onto the lower portion 5 of the quill 2.
This head shown very diagrammatically at ~ may consist of a sealing joint mounted on the bottom part 5 of the quill 2.
This sealing joint may for example be made from a polymerizable material and if it is not permanently fastened to the lower portion 5 of the quill 2, it may be provided by means of any suitable tool (not shown) whatsoever inserted into the quill 2 once the latter has been inserted into the excavation or hole 1.
Into the quill 2 as seen on figure 2 may be inserted a rotary drilling tool 7 capable of providing a hole 8 into the wall 9 of the pipeline C.
Likewise as seen on figure 1 it is possible to insert into the quill 2 an equipment consisting essentially of a rod 10 with an end piece 11 to which is fastened at 12 an element for temporarily obturating the pipeline C, which element here takes the shape of an inflatable balloon.
Instead of the inflatable balloon 13, it could quite be possible and without departing from the scope of the invention to couple the end piece 11 of the rod 10 to another apparatus such for example as a camera for inspecting the pipeline C or a probe or also any other kind of apparatus.
As it clearly appears from figure 3 the internal diameter of the quill 2 may be adapted to also allow the passage of a system 14 for sensing the direction of flow within the pipeline C. Such a detection indeed is important to the extent where the pipeline 6 has to be obturated by means of an obturating balloon such as 13 which should necessarily be inserted upstream, i.e.
against or in opposition to the pressure exerted by the fluid so as to prevent any fluid leakage towards the outer atmosphere via the perforation 8. The detection system 14 essentially comprises a rod 15 at the end of which is provided a sensor 16 detecting the direction of flow of the fluid within the pipeline C. The other end of the system 14 is connected by a wiring to a box 17 displaying the result of the detection.
On figure 4 has been shown a tooling 18 carried by a rod insertable into the quill 2. The tooling 18 allows to stop up or to fill in the hole 8 drilled into the pipeline C after the balloon 13 has been withdrawn from the quill 2 once the desired operation on the pipeline has been performed.
Now for a better understanding of the invention, there will be explained hereinafter how are working the elements described hereinabove to permit the temporary obturation of the pipeline in order to carry out on the latter any operation or repair whatsoever.
There is at first provided an excavation or hole of reduced size in the ground S by means of the equipment 2 so as to disclose the external wall 9 of the pipeline C.
Then the quill 2 is inserted into the hole 1, which quill comprises as previously explained the lock 3, the expansible chambers 4 and possibly the head 6 providing a sealed connection with the pipeline.
The expansible chambers 4 connected to a source of compressed air (not shown) for example are inflated or expanded to thus provide upon bearing against the inner wall of the hole 1 a quick blocking of the quill 2 within said hole.
The bottom end 5 of the quill 2 provides owing to the head 6 a fluid-tight connection between the quill and the pipeline to the extent where said head is initially made fast to the quill. If this is not the case it will be possible to insert a suitable tooling (not shown) via the inside of the quill 2 to provide the sealed junction involved between the lower part 5 of the quill 2 and the pipeline C.
Then owing to the tooling 7 (figure 2) inserted into the quill 2 via the lock 3, the hole o in the pipeline C is drilled and then said tooling is withdrawn from the quill 2.
The system 14 (figure 3) is then inserted into the quill 2 via the lock 3 and the detection probe 1~ entering the pipeline C through the hole ~ allows to determine the direction of flow of the fluid within said pipeline, whereafter the said system 14 is withdrawn from the quill 2.
At this stage the obturating balloon 13 may be inserted into the pipeline C via the lock 3 owing to the rod 10 which carries it. The obturating balloon 13 will be inserted towards the right-hand side of figure 1, i.e. against the pressure exerted by the fluid flowing within the pipeline C as physically shown by the arrow F.
The obturating balloon 13 will then be inflated by means of a suitable source of compressed air for example to temporarily obturate the pipeline C as well visible on figure 1 and the staff will then be able to perform any desirable operation on the pipeline C.
Once the staff intervening has been completed the obturating balloon 13 will be deflated and the rod 10 carrying said balloon will be withdrawn from the quill 2 via the drilled hole ~ and the lock 3.
The perforation 8 may then be stopped up or filled in by means of a plug for example owing to the tooling diagrammatically shown at 18 on figure 4.
This having been done, the tooling 18 will be withdrawn from the quill necessarily and always via the lock 3, the expansible chambers 4 will be deflated and the quill 2 may thus be withdrawn from the hole 1 which will at last be filled.
There has thus been provided according to the invention a method of and a device for the temporary insertion of an apparatus into any buried pipeline whatsoever and this in a reliable, quick fashion without any danger for the staff having to perform an operation on the pipeline and without any discomfort or noise for the environment.
This method and this device may of course be used for all the programmed or emergency operations for intervening on the pipelines carrying gas for example in a town or other environment.
It should be understood that the invention is not at all limited to the embodiment described and illustrated which has been given by way of example only.
Thus the device according to the invention may permit the temporary insertion of any type of apparatus whatsoever into a buried pipeline and other than an obturating balloon. Likewise the head for the fluid-tight connection of the quill to the pipeline may be of any kind whatsoever as well as the number and the material of the expansible chambers providing for the temporary fastening of the quill within the excavation giving access to the pipeline on which an operation has to be performed. The quill may also form an unitary part or consist of several elements fittable into each other or telescopic in order that it thus may be adapted to the height of the excavation to be made.
This means that the invention comprises all the technical equivalents of the means described as well as their combinations if the latter are carried out according to its gist and within the scope of the appendant claims.
Claims (9)
1. A method for the temporary insertion of any apparatus whatsoever into a buried pipeline in which is flowing a fluid such for example as gas and of the type consisting in carrying out in the ground an excavation until disclosure of the pipeline, piercing said pipeline by means of a tool and this while using means preventing the communication of the fluid in the pipeline with the outer atmosphere via the excavation and inserting into said pipeline any apparatus whatsoever via the perforation made therein, wherein the improvement consists in the following steps performed after having provided the excavation :
- placing with the excavation a quill comprising said means preventing any communication of the fluid in the pipeline with the outer atmosphere via the excavation ;
- making said quill fast to the inner wall of the excavation ;
- providing a fluid-tight connection between the quill and the pipeline ;
- drilling the pipeline after insertion and passage of the tool into the inside of the quill ; and passing the apparatus into the quill for inserting it into the pipeline.
- placing with the excavation a quill comprising said means preventing any communication of the fluid in the pipeline with the outer atmosphere via the excavation ;
- making said quill fast to the inner wall of the excavation ;
- providing a fluid-tight connection between the quill and the pipeline ;
- drilling the pipeline after insertion and passage of the tool into the inside of the quill ; and passing the apparatus into the quill for inserting it into the pipeline.
2. A method according to claim 1, wherein the fluid-tight connection between the quill and the pipeline is carried out by means of a polymerizable material.
3. A method according to claim 1, wherein before the insertion of the apparatus into the pipeline, a system determining the direction of flow of the fluid in the pipeline is inserted into the latter via the quill.
4. A method according to claim 1 or 3, wherein after withdrawal of the apparatus from the pipeline via the quill, a system for stopping up of filling in the hole drilled in the pipeline is passed into and through the quill.
5. A device for the temporary insertion of any apparatus whatsoever into a buried pipeline in which is flowing a fluid such as gas for example, wherein the improvement consists in that the device comprises : a quill adapted to be inserted into an excavation, borehole or the like and comprising at the bottom portion a lock, expansible means such as expansible chambers associated with the external wall of the quill and a removably or non-removably mounted head at the bottom portion of the quill for providing a fluid-tight connection between said quill and the pipeline buried in the ground.
6. A device according to claim 5, wherein the internal diameter of the quill is adapted to allow the passage of any apparatus whatsoever to be inserted into the pipeline, such for example as an element capable of obturating the latter and of the kind forming a balloon, a camera, a probe or other type of apparatus.
7. A device according to claim 5 or 6, wherein the internal diameter of the quill is adapted to allow the passage and the withdrawal of a system for piercing the pipeline, the determination of the direction of flow of the fluid in the pipeline and the stopping up of the hole drilled in the latter.
8. A device according to claim 5, wherein said head removably or non-removably mounted at the bottom portion of the quill consists of a sealing joint for example made from a polymerizable material.
9. A device according to claim 8, wherein said sealing joint is positioned between the bottom end portion of the quill and the pipeline by means of a tooling passing into the inside of the quill.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9112443A FR2682450B1 (en) | 1991-10-09 | 1991-10-09 | METHOD AND DIPOSITIVE OF PROVISIONAL INTRODUCTION OF AN APPARATUS INTO AN UNDERGROUND PIPING |
| FR9112443 | 1991-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2080060A1 true CA2080060A1 (en) | 1993-04-10 |
Family
ID=9417752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002080060A Abandoned CA2080060A1 (en) | 1991-10-09 | 1992-10-07 | Method of and device for temporarily inserting a device into a buried pipeline |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0537076A1 (en) |
| JP (1) | JPH07190281A (en) |
| CA (1) | CA2080060A1 (en) |
| FR (1) | FR2682450B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082035A (en) * | 2020-09-10 | 2020-12-15 | 无锡市正丰建设工程有限公司 | Pipeline emergency pipe blocking air bag device and pipeline non-stop maintenance method |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2748543B1 (en) * | 1996-05-10 | 1998-07-03 | Musthane | INFLATABLE DEVICE FOR SEALING A DUCT AND INSTALLATION COMPRISING SUCH A DEVICE |
| RU2195602C2 (en) * | 1999-12-07 | 2002-12-27 | Открытое акционерное общество Научно-производственное объединение "Искра" | Apparatus for sealing pipeline |
| RU2176354C1 (en) * | 2000-07-25 | 2001-11-27 | Хасанов Ильмер Юсупович | Method and device for sealing pipeline interior by means of clay plug |
| RU2226640C2 (en) * | 2001-06-25 | 2004-04-10 | Общество с ограниченной ответственностью "ГазСМ" | Method of shutting-off pipe lines |
| DE102004001375B4 (en) * | 2004-01-09 | 2009-09-17 | Ise, Gerd, Dr. | Device for changing the free flow cross section of a pipe or channel |
| KR100741326B1 (en) * | 2005-09-26 | 2007-07-20 | 주식회사 계명엔지니어링 | Pipe fluid circuit breaker and endless relocation method of fluid pipe using the same |
| GB201312145D0 (en) * | 2013-07-05 | 2013-08-21 | Ant Hire Ltd | Stopper device |
| RU2624663C1 (en) * | 2016-10-03 | 2017-07-05 | Михаил Иванович Голубенко | Device for regulating water level in closed drainage network |
| CN114952143B (en) * | 2021-02-26 | 2024-08-16 | 西安延兴油田工程技术有限公司 | Quick positioning and connecting device for oil pipeline of drilling platform |
| CN114636043B (en) * | 2022-03-21 | 2022-09-16 | 北京天兴燃气工程有限公司 | Double-seal gas pipeline plugging device based on electric drive |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1531213A (en) * | 1975-11-10 | 1978-11-08 | Petrone J | Gas main stopper |
| US4428204A (en) * | 1981-12-08 | 1984-01-31 | Brister Beryle D | Method for forming a temporary plug in a fluid conduit |
| GB8409085D0 (en) * | 1984-04-09 | 1984-05-16 | Vick Ltd Steve | Stopping flow passage |
| SE460931B (en) * | 1987-11-16 | 1989-12-04 | Volvo Flygmotor Ab | DEVICE FOR DIRECTIONAL SEATING IN GAS FLOWS WITH TRANSONIC OR SUPERSONIC SPEED |
-
1991
- 1991-10-09 FR FR9112443A patent/FR2682450B1/en not_active Expired - Fee Related
-
1992
- 1992-10-07 CA CA002080060A patent/CA2080060A1/en not_active Abandoned
- 1992-10-08 EP EP92402755A patent/EP0537076A1/en not_active Withdrawn
- 1992-10-09 JP JP4271763A patent/JPH07190281A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082035A (en) * | 2020-09-10 | 2020-12-15 | 无锡市正丰建设工程有限公司 | Pipeline emergency pipe blocking air bag device and pipeline non-stop maintenance method |
| CN112082035B (en) * | 2020-09-10 | 2021-03-26 | 无锡市正丰建设工程有限公司 | Pipeline emergency pipe blocking air bag device and pipeline non-stop maintenance method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07190281A (en) | 1995-07-28 |
| FR2682450A1 (en) | 1993-04-16 |
| FR2682450B1 (en) | 1993-12-10 |
| EP0537076A1 (en) | 1993-04-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 19950409 |