CN100357652C - Pipeline route changer and pipeline route changing method therewith - Google Patents
Pipeline route changer and pipeline route changing method therewith Download PDFInfo
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- CN100357652C CN100357652C CNB2005100073060A CN200510007306A CN100357652C CN 100357652 C CN100357652 C CN 100357652C CN B2005100073060 A CNB2005100073060 A CN B2005100073060A CN 200510007306 A CN200510007306 A CN 200510007306A CN 100357652 C CN100357652 C CN 100357652C
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Abstract
The present invention discloses a rechannelling device for pipelines and a method for rechannelling pipelines by the device. The device comprises a pipe connecting cover and a pipe connecting body, wherein the pipe connecting cover is screwed on the pipe connecting body; the upper part of the pipe connecting body comprises a pipe connecting body head and a pipe connecting body neck, and a positioning screw bolt for fixing the position of an inner plug is arranged in the pipe connecting body head along a radial direction; the middle part of the pipe connecting body is in a hollow spherical shape, two pipe segments, the diameters of which are smaller than those of the sphere, are in through connection to the surface of the sphere in a straight line, and the middle part of the spherical shape of the pipe connecting body is divided into an upper part and a lower part which are in screw connection by screw bolts and screw nuts; the lower part of the pipe connecting body is a pipe connecting seat which is a pipe segment being in through connection to the surface of the sphere in the middle part of the pipe connecting body. The device of the present invention can be used for not only pipeline perforation, but also pipeline plugging, and moreover, the device can replace two kinds of existing devices of ring-locking three-way perforating devices and ring-locking four-way plugging devices. Work efficiency can be obviously enhanced by using the device of the present invention for rechannelling pipelines.
Description
Technical field
The invention belongs to the pipeline technical field that changes its course, particularly a kind of to the device that under the user mode pipeline changed its course and adopt this device to carry out the method that pipeline changes its course.
Background technique
In order to satisfy the needs of long-range conveying, media such as oil, rock gas, liquid gas, coal gas are generally transported in fields such as petrochemical industry, gas industry by pipeline.In self corrosion, perhaps artificially reach effect such as other external force down, conveyance conduit can leak unavoidably.In case leak, must carry out the blocking Leakage repairing in time, effectively.In order to reduce the influence that production to the terminal use, life cause, the blocking Leakage repairing need be carried out under the situation of the fed sheet of a media that does not stop to leak pipeline section usually.
The pipeline of transportation oil, rock gas, liquid gas, coal gas etc. generally all is buried in below the face of land.So, when delivering pipe takes place to leak, all need to show the blow-by tube section so that launch patch work with excavating.But, if the pipeline section that take place to leak be in fixed buildings etc. below---very general in the city, then make the work of showing the blow-by tube section to carry out with excavating, cause people directly to repair to leaking pipeline section.
For this reason, the way that people find out is the transportation of changing its course, thereby discards following leakage pipeline sections such as being in fixed buildings.Be exactly specifically, avoid fixed buildings, before delivering pipe passes fixed buildings and the place of respectively selecting a place to excavate afterwards, pick out new pipeline from these two places, the two ends with discarded pipe block again.As shown in Figure 1, old pipeline 1 passes from the underground of fixed buildings 3, leaks the below that pipeline section 4 is positioned at fixed buildings 3.Can not be directly to leaking under the situation that pipeline section 4 repair, have to discard and leak pipeline section 4, respectively from a and the perforate of b place and pick out new pipeline 5, and then respectively the two ends of discarding leakage pipeline section 4 are blocked with first expand a bucket 2a, the second expansion barrel 2b.
The method that above-mentioned pipeline changes its course not only is applicable to the pipe leakage repairing under the specified conditions, also usually is used for the occasion of other any operations of need changing its course to the pipeline under the working state.As being about to new building thing or expressway etc. on the location that pipeline is passed by,, can finish the pipeline operation of changing its course usually in advance, to avoid newly-built building or expressway etc. for the convenience of service conduit later on.
As mentioned above, change its course in order to finish pipeline, prior art must divide perforate and two steps of shutoff to carry out.Perforate and shutoff be or not same place, and need to use kit equipment separately.The perforate device therefor is generally lock ring threeway boring device, and its structure is shown in Fig. 2 A and Fig. 2 B; The shutoff device therefor is generally lock ring four-way blocking device, and its structure as shown in Figure 3.
Summary of the invention
One of purpose of the present invention provides a kind of pipeline device that changes its course, and this device not only can be used for pipeline tapping but also can be used for pipe plugging, can substitute existing lock ring threeway boring device and these two kinds of equipment of lock ring four-way blocking device.
Another object of the present invention provides a kind of apparatus of the present invention that adopt and carries out the method that pipeline changes its course under specific environment.This method is combined in a place with perforate and shutoff carries out, and can significantly improve working efficiency.
The pipeline of the present invention design device that changes its course comprises that pipe connects lid and pipe junctor two-part, and pipe connects lid and is screwed onto on the pipe junctor.The top of pipe junctor comprises pipe junctor head and pipe junctor neck, and pipe junctor head is the boss on the pipe junctor neck, is used for connecing lid with pipe and is spirally connected, and radially is provided with the holding down bolt of stifled position in being used for fixing in the pipe junctor head; The middle part of pipe junctor is the sphere of hollow, two joint diameters are one less than the pipeline section of sphere diameter and pass through point-blank and be connected to spherome surface, the pipeline section center line flatly passes through the centre of sphere, the spherical middle part of pipe junctor is cut into upper and lower two-part, so that two-part can be embraced pending pipeline after closing up, upper and lower two-part can screw togather by bolt, nut; The bottom of pipe junctor is a pipe joint chair, and pipe joint chair is to pass through a pipeline section that is connected to pipe junctor middle part spherome surface, can support whole device, and the pipe inner cavity can partly hold the expansion bucket that shutoff is used.
The diameter D2 at pipe junctor sphere middle part should pass through the diameter D of the pipeline section that connects greater than spherome surface
1, but from practical standpoint say there is no need big too much, generally satisfy 1.2D
1≤ D
2≤ 2.5D
1Get final product.
Can embrace pending pipeline after the upper and lower two-part of managing the junctor middle part are closed up, the line of cut at cutting pipe junctor middle part should all be divided into two halves separately with passing through two pipeline sections that are connected to the middle part spherome surface, and promptly line of cut is by the center of circle of pipeline section cross circular section.The cutting method that meets this requirement has multiple, but can be classified as three major types, that is:
(1) line of cut is a horizontal line "-", and the spherical middle part that this cutting method will be managed junctor just is cut into goes up, just descending two-part;
(2) line of cut is a right oblique line "/", and the spherical middle part that this cutting method will be managed junctor is cut into upper left, bottom right two-part;
(3) line of cut be left oblique line " ", the spherical middle part that this cutting method will be managed junctor is cut into upper right, lower-left two-part.
Upper and lower two-part that pipe junctor middle part is cut into can separate fully, finish screwing togather by bolt, nut.When line of cut is horizontal line, can adopt this implementation; Upper and lower two-part that pipe junctor middle part is cut into also can connect together in the hinge mode, and two-part can rotate around hinge axis, finish screwing togather after closing up again by bolt, nut.When line of cut was right oblique line or left oblique line, this implementation was adopted in suggestion.
The pipeline that utilizes the present invention the to design device that changes its course, can finish the pipeline work of changing its course as follows:
(1) open the upper and lower two-part at pipe junctor sphere middle part, embrace pending pipeline after fastening nut two-part are screwed on together securely;
(2) welding is wrapped in two pipeline sections at the pipe junctor middle part on the pending pipe surface and the slit between the pending pipe surface, with anti-leak.Described slit comprises that the pipeline section two halves close up afterwards the slit of formation and the slit between pipeline section end face and the pending pipe surface therebetween;
(3), select direction and angle easily, the new pipeline of welding on the spherome surface of pipe junctor middle part, the medium transportation after being used for pipeline and changing its course according to field condition;
(4) cutting knife enters pipe junctor inner chamber from pipe junctor top, and pending pipeline is cut away one section and taking-up, and medium enters new pipeline simultaneously;
(5) put down the bucket that expands from pipe junctor top, block medium in old ducted whereabouts;
(6) put down interior blocking up from managing junctor top, the holding down bolt of tightening in the pipe junctor head is fixed interior blocking up;
(7) capped pipe connects lid on pipe junctor head, and fastening nut is promptly finished the pipeline work of changing its course.
The present invention is by the spherical designs at pipe junctor middle part, make the expansion bucket block medium after old ducted whereabouts, medium can flow into new pipeline by space remaining in the spherical inner chamber, therefore can realize that perforate and shutoff carry out in same place, and only need use kit equipment.Apparatus of the present invention not only can be used for pipeline tapping but also can be used for pipe plugging, can substitute existing lock ring threeway boring device and these two kinds of equipment of lock ring four-way blocking device.Adopt apparatus of the present invention to carry out pipeline and change its course, can significantly improve working efficiency.
Description of drawings
Fig. 1 is the schematic representation that existing pipeline changes its course.
Fig. 2 A is a lock ring threeway boring device front half sectional view.
Fig. 2 B is a lock ring threeway boring device lateral plan.
Fig. 3 is a lock ring four-way blocking device front half sectional view.
Fig. 4 is apparatus of the present invention first embodiment's Facad structure schematic representation.
Fig. 5 is apparatus of the present invention first embodiment left side structural representation.
Fig. 6 is apparatus of the present invention second embodiment's Facad structure schematic representation.
Among the figure, 1 is old pipeline, and 2a is the first expansion bucket, 2b is the second expansion bucket, and 3 is fixed buildings, and 4 for leaking pipeline section, 5 is new pipeline, and 6 is the top at spherical middle part, and 7 are end tube section under the pipe junctor neck, 8 are pipe junctor head, and 9 for pipe connects lid, and 10 is holding down bolt, 11 are pipe junctor neck, 12 is the bottom at spherical middle part, and 13 is pipe joint chair, and 14,15 is that pipe junctor middle part spherome surface passes through the pipeline section that connects.
Embodiment
The pipeline of the present invention design device that changes its course comprises that pipe connects lid and pipe junctor two-part, and pipe connects lid and is screwed onto on the pipe junctor.The top of pipe junctor comprises pipe junctor head and pipe junctor neck, and pipe junctor head is the boss on the pipe junctor neck, is used for connecing lid with pipe and is spirally connected, and radially is provided with the holding down bolt of stifled position in being used for fixing in the pipe junctor head; The middle part of pipe junctor is the sphere of hollow, two sections diameters are one less than the pipeline section of sphere diameter and pass through point-blank and be connected to spherome surface, the pipeline section center line flatly passes through the centre of sphere, the spherical middle part of pipe junctor is cut into upper and lower two-part, so that two-part can be embraced pending pipeline after closing up, upper and lower two-part can screw togather by bolt, nut; The bottom of pipe junctor is a pipe joint chair, and pipe joint chair is to pass through a pipeline section that is connected to pipe junctor middle part spherome surface, can support whole device, and the pipe inner cavity can partly hold the expansion bucket that shutoff is used.
Based on mentality of designing of the present invention, multiple realization concrete mode of the present invention can be arranged, further describe the present invention below in conjunction with the drawings and specific embodiments.
First embodiment: referring to Fig. 4 and Fig. 5, the pipeline of the present embodiment device that changes its course comprises that pipe connects to cover 9 and pipe junctor two-part, and pipe connects and cover 9 and be screwed onto and manage on the junctor.The top of pipe junctor comprises pipe junctor head 8 and pipe junctor neck 11, and pipe junctor head 8 is the boss on the pipe junctor neck 11, is used for connecing with pipe cover 9 and being spirally connected, and radially is provided with the holding down bolt 10 that blocks up the position in being used for fixing in the pipe junctor head 8; The middle part of pipe junctor is the sphere of hollow, two joint diameters are that 2/3 pipeline section 14,15 of sphere diameter is one and passes through point-blank and be connected to spherome surface, the pipeline section center line flatly passes through the centre of sphere, the spherical middle part of pipe junctor is cut into upper and lower two- part 6,12, so that two-part can be embraced pending pipeline after closing up, upper and lower two- part 6,12 can screw togather by bolt, nut; The bottom of pipe junctor is a pipe joint chair 13, pipe joint chair 13 is for passing through a pipeline section that is connected to pipe junctor middle part spherome surface, can support whole device, the pipe inner cavity can partly hold the expansion bucket that shutoff is used, pipe joint chair 13 is on the same straight line with a pipe joint section 7 of pipe junctor neck 11 lower ends, play jointly hold, the fixedly effect of the expansion bucket used of shutoff.
As shown in Figure 4, the line of cut AA ' at cutting pipe junctor middle part is a right oblique line "/", the spherical middle part of pipe junctor is cut into upper left 6, bottom right 12 two-part, to pass through two pipeline sections 14,15 that are connected to the middle part spherome surface simultaneously and all be divided into two halves separately, promptly line of cut AA ' is by the center of circle O of pipeline section cross circular section.That pipe junctor middle part is cut into is upper left 6, bottom right 12 two-part connect together in the hinge mode, and two-part can rotate around hinge axis, finish screwing togather after closing up again by bolt, nut.
Utilize the present embodiment device, can finish the pipeline work of changing its course as follows:
(1) open upper left 6, bottom right 12 two-part at pipe junctor sphere middle part, embrace pending pipeline after fastening nut two-part are screwed on together securely;
(2) welding is wrapped in two pipeline sections at the pipe junctor middle part on the pending pipe surface and the slit between the pending pipe surface, with anti-leak.Described slit comprises that the pipeline section two halves close up afterwards the slit of formation and the slit between pipeline section end face and the pending pipe surface therebetween;
(3), select direction and angle easily, the new pipeline of welding on the spherome surface of pipe junctor middle part, the medium transportation after being used for pipeline and changing its course according to field condition;
(4) cutting knife enters pipe junctor inner chamber from pipe junctor top, and pending pipeline is cut away one section and taking-up, and medium enters new pipeline simultaneously;
(5) put down the bucket that expands from pipe junctor top, block medium in old ducted whereabouts;
(6) put down interior blocking up from managing junctor top, the holding down bolt of tightening in the pipe junctor head 10 is fixed interior blocking up;
(7) capped pipe connects and covers 9 on pipe junctor head 8, and fastening nut is promptly finished the pipeline work of changing its course.
As seen, this device is by the spherical designs at pipe junctor middle part, make the expansion bucket block medium after old ducted whereabouts, medium can flow into new pipeline by space remaining in the spherical inner chamber, therefore can realize that perforate and shutoff carry out in same place, and only need use kit equipment.Apparatus of the present invention not only can be used for pipeline tapping but also can be used for pipe plugging, can substitute existing lock ring threeway boring device and these two kinds of equipment of lock ring four-way blocking device.Adopt apparatus of the present invention to carry out pipeline and change its course, can significantly improve working efficiency.
Second embodiment: referring to Fig. 6, the pipeline of the present embodiment device that changes its course comprises that pipe connects to cover 9 and pipe junctor two-part, and pipe connects and cover 9 and be screwed onto and manage on the junctor.The top of pipe junctor comprises pipe junctor head 8 and pipe junctor neck 11, and pipe junctor head 8 is the boss on the pipe junctor neck 11, is used for connecing with pipe cover 9 and being spirally connected, and radially is provided with the holding down bolt 10 that blocks up the position in being used for fixing in the pipe junctor head 8; The middle part of pipe junctor is the sphere of hollow, two joint diameters are that 3/4 pipeline section 14,15 of sphere diameter is one and passes through point-blank and be connected to spherome surface, the pipeline section center line flatly passes through the centre of sphere, the spherical middle part of pipe junctor is cut into upper and lower two- part 6,12, so that two-part can be embraced pending pipeline after closing up, upper and lower two- part 6,12 can screw togather by bolt, nut; The bottom of pipe junctor is a pipe joint chair 13, pipe joint chair 13 is for passing through a pipeline section that is connected to pipe junctor middle part spherome surface, can support whole device, the pipe inner cavity can partly hold the expansion bucket that shutoff is used, pipe joint chair 13 is on the same straight line with a pipe joint section 7 of pipe junctor neck 11 lower ends, play jointly hold, the fixedly effect of the expansion bucket used of shutoff.
As shown in Figure 6, the line of cut AA ' at cutting pipe junctor middle part is a horizontal line "-", the spherical middle part of pipe junctor is cut into just goes up 6, just descending 12 two-part, to pass through two pipeline sections 14,15 that are connected to the middle part spherome surface simultaneously and all be divided into two halves separately, promptly line of cut AA ' is by the center of circle O of pipeline section cross circular section.
Pipe junctor middle part is cut into just goes up 6, just time 12 two-part can separate fully, finish screwing togather by bolt, nut, also can connect together in the hinge mode, and two-part can rotate around hinge axis, finish screwing togather after closing up again by bolt, nut.
Utilize the present embodiment device, can finish the pipeline work of changing its course as follows:
(1) open pipe junctor sphere middle part last 6, descend 12 two-part, embrace pending pipeline after fastening nut two-part are screwed on together securely;
(2) welding is wrapped in two pipeline sections at the pipe junctor middle part on the pending pipe surface and the slit between the pending pipe surface, with anti-leak.Described slit comprises that the pipeline section two halves close up afterwards the slit of formation and the slit between pipeline section end face and the pending pipe surface therebetween;
(3), select direction and angle easily, the new pipeline of welding on the spherome surface of pipe junctor middle part, the medium transportation after being used for pipeline and changing its course according to field condition;
(4) cutting knife enters pipe junctor inner chamber from pipe junctor top, and pending pipeline is cut away one section and taking-up, and medium enters new pipeline simultaneously;
(5) put down the bucket that expands from pipe junctor top, block medium in old ducted whereabouts;
(6) put down interior blocking up from managing junctor top, the holding down bolt of tightening in the pipe junctor head 10 is fixed interior blocking up;
(7) capped pipe connects and covers 9 on pipe junctor head 8, and fastening nut is promptly finished the pipeline work of changing its course.
As seen, this device is by the spherical designs at pipe junctor middle part, make the expansion bucket block medium after old ducted whereabouts, medium can flow into new pipeline by space remaining in the spherical inner chamber, therefore can realize that perforate and shutoff carry out in same place, and only need use kit equipment.Apparatus of the present invention not only can be used for pipeline tapping but also can be used for pipe plugging, can substitute the existing bad threeway boring device of lock and these two kinds of equipment of lock ring four-way blocking device.Adopt apparatus of the present invention to carry out pipeline and change its course, can significantly improve working efficiency.
Claims (9)
1, a kind of pipeline device that changes its course is characterized in that comprising that pipe connects lid (9) and pipe junctor two-part, and pipe connects lid (9) and is screwed onto and manages on the junctor;
The top of pipe junctor comprises pipe junctor head (8) and pipe junctor neck (11), and pipe junctor head (8) is used for connecing lid (9) with pipe to be spirally connected for the boss on the pipe junctor neck (11), radially is provided with the holding down bolt (10) of stifled position in being used for fixing in the pipe junctor head (8); The middle part of pipe junctor is the sphere of hollow, two joint diameters are one less than the pipeline section (14,15) of sphere diameter and pass through point-blank and be connected to spherome surface, the pipeline section center line flatly passes through the centre of sphere, the spherical middle part of pipe junctor is cut into upper and lower two-part (6,12), upper and lower two-part (6,12) screw togather by bolt, nut, and the line of cut at cutting pipe junctor middle part (AA ') will pass through two pipeline sections (14,15) that are connected to the middle part spherome surface and all be divided into two halves separately; The bottom of pipe junctor is pipe joint chair (13), and pipe joint chair (13) is for passing through a pipe joint section that is connected to pipe junctor middle part spherome surface.
2, the pipeline according to claim 1 device that changes its course is characterized in that, the diameter (D at pipe junctor sphere middle part
2) pass through the diameter (D of the pipeline section (14,15) that connects with spherome surface
1) satisfy relation: 1.2D
1≤ D
2≤ 2.5D
1
3, the pipeline according to claim 1 and 2 device that changes its course, it is characterized in that, described line of cut (AA ') be horizontal line " one ", by the center of circle (O) of pipeline section (14,15) cross circular section, just be cut in the middle part of the sphere with the pipe junctor and go up, just descending two-part (6,12); These two-part (6,12) separate fully, finish screwing togather by bolt, nut, perhaps connect together in the hinge mode, and two-part (6,12) can rotate around hinge axis, finish screwing togather after closing up again by bolt, nut.
4, the pipeline according to claim 1 and 2 device that changes its course, it is characterized in that, described line of cut (AA ') be right oblique line "/", by the center of circle (O) of pipeline section (14,15) cross circular section, be cut into upper left, bottom right two-part (6,12) in the middle part of the sphere with the pipe junctor; These two-part (6,12) connect together in the hinge mode, and two-part (6,12) can rotate around hinge axis, finish screwing togather after closing up again by bolt, nut.
5, the pipeline according to claim 1 and 2 device that changes its course, it is characterized in that, described line of cut (AA ') be left oblique line " ", by the center of circle (O) of pipeline section (14,15) cross circular section, the spherical middle part of pipe junctor is cut into upper right, lower-left two-part (6,12); These two-part (6,12) connect together in the hinge mode, and two-part (6,12) can rotate around hinge axis, finish screwing togather after closing up again by bolt, nut.
6, the pipeline according to claim 3 device that changes its course, it is characterized in that, pipe junctor neck (11) lower end has a joint and pipe joint chair (13) to be in pipeline section (7) on the same straight line, play with pipe joint chair (13) hold, the fixedly effect of the expansion bucket used of shutoff.
7, the pipeline according to claim 4 device that changes its course, it is characterized in that, pipe junctor neck (11) lower end has a joint and pipe joint chair (13) to be in pipeline section (7) on the same straight line, play with pipe joint chair (13) hold, the fixedly effect of the expansion bucket used of shutoff.
8, the pipeline according to claim 5 device that changes its course, it is characterized in that, pipe junctor neck (11) lower end has a joint and pipe joint chair (13) to be in pipeline section (7) on the same straight line, play with pipe joint chair (13) hold, the fixedly effect of the expansion bucket used of shutoff.
9, a kind of claim 1 or 2 described pipelines device that changes its course that utilizes carries out the method that pipeline changes its course, and it is characterized in that may further comprise the steps:
(1) open the upper and lower two-part (6,12) at pipe junctor sphere middle part, embrace pending pipeline after fastening nut two-part are screwed on together securely;
(2) welding is wrapped in two pipeline sections at the pipe junctor middle part on the pending pipe surface and the slit between the pending pipe surface, with anti-leak;
(3), select direction and angle easily, the new pipeline of welding on the spherome surface of pipe junctor middle part, the medium transportation after being used for pipeline and changing its course according to field condition;
(4) cutting knife enters pipe junctor inner chamber from pipe junctor top, and pending pipeline is cut away one section and taking-up, and medium enters new pipeline simultaneously;
(5) put down the bucket that expands from pipe junctor top, block medium in old ducted whereabouts;
(6) put down interior blocking up from managing junctor top, the holding down bolt of tightening in the pipe junctor head (10) is fixed interior blocking up;
(7) go up capped pipe at pipe junctor head (8) and connect lid (9), fastening nut is promptly finished the pipeline work of changing its course.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100073060A CN100357652C (en) | 2005-02-06 | 2005-02-06 | Pipeline route changer and pipeline route changing method therewith |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100073060A CN100357652C (en) | 2005-02-06 | 2005-02-06 | Pipeline route changer and pipeline route changing method therewith |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1644975A CN1644975A (en) | 2005-07-27 |
| CN100357652C true CN100357652C (en) | 2007-12-26 |
Family
ID=34875280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100073060A Expired - Fee Related CN100357652C (en) | 2005-02-06 | 2005-02-06 | Pipeline route changer and pipeline route changing method therewith |
Country Status (1)
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|---|---|
| CN (1) | CN100357652C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421563B (en) * | 2013-09-04 | 2017-03-15 | 中国石油天然气集团公司 | A kind of branch pipeline is ventilative to consider cover and preparation method |
| CN103486382A (en) * | 2013-09-30 | 2014-01-01 | 苏州市燃气设备阀门制造有限公司 | Spherical pipe connector |
| CN105526448A (en) * | 2015-12-31 | 2016-04-27 | 中国石油天然气集团公司 | Pipe fitting for additionally guiding branches for oil and gas pipelines |
| CN106122646A (en) * | 2016-08-15 | 2016-11-16 | 江苏迪威高压科技股份有限公司 | A kind of spherical pipe fitting |
| CN107830291B (en) * | 2017-11-28 | 2023-06-20 | 成都建工工业设备安装有限公司 | Converging connection box and mounting and application process thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4244895A (en) * | 1978-03-25 | 1981-01-13 | Yasushi Nakashin | Leak repairing process for underground pipe |
| CN2101813U (en) * | 1991-08-29 | 1992-04-15 | 王希泉 | Pipeline changing device needless stopping production |
| GB2296305A (en) * | 1994-12-22 | 1996-06-26 | North West Water Group Plc | Apparatus for and method of removing and replacing a pipeline component |
| CN1142584A (en) * | 1995-08-04 | 1997-02-12 | 刘建人 | Pipe clasping valve with by-pass pipe |
| JPH10325498A (en) * | 1997-05-26 | 1998-12-08 | Cosmo Koki Co Ltd | Leakage preventing tool for fluid |
| JP2002206667A (en) * | 2001-01-09 | 2002-07-26 | Seibu Gas Co Ltd | Replacing execution method for buried gas pipe |
-
2005
- 2005-02-06 CN CNB2005100073060A patent/CN100357652C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4244895A (en) * | 1978-03-25 | 1981-01-13 | Yasushi Nakashin | Leak repairing process for underground pipe |
| CN2101813U (en) * | 1991-08-29 | 1992-04-15 | 王希泉 | Pipeline changing device needless stopping production |
| GB2296305A (en) * | 1994-12-22 | 1996-06-26 | North West Water Group Plc | Apparatus for and method of removing and replacing a pipeline component |
| CN1142584A (en) * | 1995-08-04 | 1997-02-12 | 刘建人 | Pipe clasping valve with by-pass pipe |
| JPH10325498A (en) * | 1997-05-26 | 1998-12-08 | Cosmo Koki Co Ltd | Leakage preventing tool for fluid |
| JP2002206667A (en) * | 2001-01-09 | 2002-07-26 | Seibu Gas Co Ltd | Replacing execution method for buried gas pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1644975A (en) | 2005-07-27 |
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