CN108799650A - A kind of coated pipeline welding structure and its welding method - Google Patents
A kind of coated pipeline welding structure and its welding method Download PDFInfo
- Publication number
- CN108799650A CN108799650A CN201810847592.9A CN201810847592A CN108799650A CN 108799650 A CN108799650 A CN 108799650A CN 201810847592 A CN201810847592 A CN 201810847592A CN 108799650 A CN108799650 A CN 108799650A
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- Prior art keywords
- pipe ontology
- box cupling
- pipe
- ontology
- annular
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- 238000003466 welding Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005260 corrosion Methods 0.000 claims abstract description 29
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- 238000000576 coating method Methods 0.000 claims abstract description 24
- 230000007797 corrosion Effects 0.000 claims abstract description 24
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 20
- 238000003032 molecular docking Methods 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
- F16L13/0254—Welded joints the pipes having an internal or external coating
- F16L13/0263—Welded joints the pipes having an internal or external coating having an internal coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or welding
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The present invention relates to pipe-line technical fields, disclose a kind of coated pipeline welding structure and its welding method, the second pipe ontology docked is sealed including first pipe ontology and coaxially, corrosion-inhibiting coating is coated on the internal ring wall of first pipe ontology and the internal ring wall of second pipe ontology；And first box cupling and the second box cupling for coaxially welding, first box cupling is set in the periphery of first pipe ontology, first annular space is configured between the first box cupling and first pipe ontology, second box cupling is set in the periphery of second pipe ontology, the second annular space is configured between the second box cupling and second pipe ontology, first annular space is connected with the second annular space and is collectively configured to integral annular enclosure space, is connected with the second box cupling in the first box cupling and the seam areas of corresponding integral annular enclosure space is configured with the first weld seam.The coated pipeline welding structure has the advantages that reliable connection, good seal performance and avoids high temperature corrosion-inhibiting coating.
Description
Technical field
The present invention relates to pipe-line technical fields, more particularly to a kind of coated pipeline welding structure and its welding
Method.
Background technology
The inner wall of existing pipe-line has corrosion-inhibiting coating, and pipe-line is at docking often using the side of welding
Formula achieves a fixed connection, and in the welding process, corrosion-inhibiting coating can be damaged because the high temperature of welding influences, therefore, corrosion-inhibiting coating
Anti-corrosion effect can decline.To avoid the generation of this case, the method for installing sliding sleeve inside generally use additional, although this method can
To completely cut off the transmission of welding heat to a certain extent, but the sectional area of the pipe wall internal diameters of pipe-line can be also reduced simultaneously
Size not only influences the conveying of oil gas as a result, meanwhile, also it can bring obstacle to the internal cleaning of the tube wall of pipe-line.
Invention content
(1) technical problems to be solved
The object of the present invention is to provide a kind of coated pipeline welding structure and its welding methods, existing in the prior art to solve
There is the inner wall of pipe-line to there is corrosion-inhibiting coating, pipe-line often to realize fixation by the way of welding at docking
Connection, in the welding process, corrosion-inhibiting coating can be damaged because the high temperature of welding influences, therefore, the anti-corrosion effect of corrosion-inhibiting coating
It can decline.To avoid coating from being damaged because the high temperature of welding influences, the method for installing sliding sleeve inside generally use additional, though this method
The transmission of welding heat can so be completely cut off to a certain extent, but can also reduce section of the pipe wall internal diameters of pipe-line simultaneously
Area size not only influences the conveying of oil gas as a result, meanwhile, it can also be brought to the internal cleaning of the tube wall of pipe-line
The technical issues of obstacle.
(2) technical solution
In order to solve the above-mentioned technical problem, according to the first aspect of the invention, a kind of coated pipeline welding structure is provided, is wrapped
It includes：First pipe ontology and the second pipe ontology docked with the first pipe ontology co-axial seal, wherein described first
It is equipped with corrosion-inhibiting coating on the internal ring wall of the internal ring wall of pipeline body and the second pipe ontology；And first box cupling and with institute
The second box cupling of the first box cupling coaxial welding is stated, first box cupling is set in the periphery of the first pipe ontology, described
First annular space is configured between first box cupling and the first pipe ontology, second box cupling is set in second pipe
The periphery of road ontology, is configured with the second annular space between second box cupling and the second pipe ontology, and described first
Annular space is connected with second annular space and is collectively configured to integral annular enclosure space, in first box cupling
It is connected with second box cupling and the seam areas of the corresponding integral annular enclosure space is configured with the first weld seam.
Wherein, the annular extended towards the second pipe ontology is configured in the side end face of the first pipe ontology to extend out
Portion is configured in the side end face of the second pipe ontology and extends towards the first pipe ontology and can be embedded into outside the annular
The annular of the inside in expansion portion inside contracts portion.
Wherein, the first outer shroud that the outer surface that portion is inside contracted in the annular is configured with opening towards the annular expanding part is close
Sealing groove is embedded with the first seal member in the first outer ring seal slot.
Wherein, it is configured with central axis of the opening towards the first pipe ontology in the inner surface of the annular expanding part
The first inner ring seal slot in direction, the second seal member is embedded in the first inner ring seal slot.
Wherein, the annular inside contracts the front end face in portion and is connected to second seal member and inside contracts portion towards the annular
On lateral surface.
Wherein, the first outer shroud extended towards the second pipe ontology is configured in the side end face of the first pipe ontology
Body is configured with towards first pipe ontology extension in the side end face of the second pipe ontology and can be embedded into described first
First inner ring body of the inside of outer shroud body.
Wherein, it is equipped with third sealing at the position that the first outer shroud body and the first inner ring body are connected to each other
Part.
Wherein, the second inner ring extended towards the second pipe ontology is configured in the side end face of the first pipe ontology
Body is configured with the second outer shroud body extended towards the first pipe ontology in the side end face of the second pipe ontology,
In, the second inner ring body is embedded into the second outer ring body.
Wherein, the outer surface of the second inner ring body be configured with opening towards the second outer shroud body second outside
Ring seal groove is embedded with the 4th seal member in the second outer ring seal slot.
Wherein, in the portion for being located at the first pipe ontology and being connected with the second pipe ontology of first box cupling
It is configured with the second inner ring seal slot on inner surface between position and the integral annular enclosure space, it is close in second inner ring
The 5th seal member is embedded in sealing groove.
Wherein, it is configured with the second weld seam between first box cupling and the first pipe ontology, is connect described second
It is configured with third weld seam between hoop and the second pipe ontology.
Wherein, sealing is equipped at the position that the first pipe ontology is docked with the second pipe ontology co-axial seal to stick
Glue-line.
According to the second aspect of the application, a kind of coated pipeline welding method is also provided, including：To the first box cupling and first
The contact site of pipeline body is welded so that the first box cupling connect with first pipe ontology it is integral；To the second box cupling
Welded with the contact site of second pipe ontology so that the second box cupling connect with second pipe ontology it is integral；Respectively
The inner tubal wall of inner tubal wall and second pipe ontology to first pipe ontology sprays；To first pipe ontology and second pipe
Ontology carries out co-axial seal docking；The position being connected to each other with the second box cupling to the first box cupling is welded, so that the first box cupling
It is connect with the second box cupling integral.
Wherein, the method further include respectively the inner tubal wall of the inner tubal wall to first pipe ontology and second pipe ontology into
Row anti-corrosion spray.
(3) advantageous effect
Coated pipeline welding structure provided by the invention has the following advantages that compared with prior art：
In the coated pipeline welding structure of application, by adding the first box cupling and the second box cupling, and so that this first connects
The fixed periphery for being set in the first pipe ontology of hoop, the second box cupling are fixed the periphery for being set in the second pipe ontology, are passed through
It is connected with second box cupling in first box cupling and the position of the corresponding integral annular enclosure space is configured with the first weld seam,
So as to realize being fixedly connected for first box cupling and the second box cupling, further, it is also achieved that the first pipe ontology
With being fixedly connected for second pipe ontology, it is connected with second pipe ontology in the first pipe ontology in this way, just eliminating
The technical process that position is welded, further, high temperature when efficiently avoiding because of welding is to first pipe ontology and the
The case where corrosion-inhibiting coating of seam crossing between two pipeline bodies damages.Further, since the first pipe ontology and second
Pipeline body thus greatly increases the first pipe ontology and second pipe sheet using the technological design of no variable-diameter structure
The concentricity of body, also, the technological design of this no variable-diameter structure, also greatly reduce card of the pipeline in scale removal process,
Stifled probability.In addition, the design of above-mentioned integral annular enclosure space, additionally it is possible to which the transmission for effectively slowing down heat is avoided right
When the seam areas of first box cupling and the second box cupling is welded, the heat transfer generated when by welding is to corrosion-inhibiting coating, into one
Step ground efficiently avoids the high temperature because being generated when welding to anti-on the internal ring wall of first pipe ontology and second pipe ontology
The case where rotten coating damages.It should be noted that by so that it is same that the first pipe ontology and second pipe ontology carry out
Sealing is docked, so as to the seam for being effectively prevented oil, gas is connected to each other through the first pipe ontology and second pipe ontology
Place and be flowed into integral annular enclosure space, further, avoid there is a situation where oil gas reveal.
Description of the drawings
Fig. 1 is the welded overall structure diagram embodiment of coated pipeline one of embodiments herein；
Fig. 2 is the welded overall structure diagram embodiment of coated pipeline two of embodiments herein；
Fig. 3 is the welded overall structure diagram embodiment of coated pipeline three of embodiments herein；
Fig. 4 is the welded overall structure diagram example IV of coated pipeline of embodiments herein；
Fig. 5 is the welded overall structure diagram embodiment of coated pipeline five of embodiments herein；
Fig. 6 is the step flow diagram of the coated pipeline welding method of embodiments herein.
In figure, 1：First pipe ontology；10：Second seal member；11：Annular expanding part；111：First inner ring seal slot；
112：First outer shroud body；113：Second inner ring body；2：Second pipe ontology；21：Annular inside contracts portion；211：First outer shroud is close
Sealing groove；9：First seal member；212：First inner ring body；213：Second outer shroud body；3：First box cupling；31：Second inner ring
Seal groove；311：5th seal member；4：Second box cupling；5：First annular space；6：Second annular space；7：Integral annular
Enclosure space；8：First weld seam；20：Third seal member；30：Second outer ring seal slot；40：4th seal member；50：First
Weld seam；60：Second weld seam.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment 1：
As shown in Figure 1, schematically showing that the coated pipeline welding structure includes first pipe ontology 1, second in figure
Pipeline body 2, the first box cupling 3, the second box cupling 4, first annular space 5 and the second annular space 6.
In embodiments herein, the first pipe ontology 1 and docked with 1 co-axial seal of first pipe ontology
Two pipeline bodies 2, wherein be equipped on the internal ring wall of the first pipe ontology 1 and the internal ring wall of the second pipe ontology 2 anti-
Rotten coating (not shown).The setting of the corrosion-inhibiting coating, primarily serving prevents from flowing through the first pipe ontology 1 and in an axial direction
The case where oil gas of two pipeline bodies 2 causes corrosion to the internal ring wall of the first pipe ontology 1 and second pipe ontology 2, to
Play the role of protecting to first pipe ontology 1 and second pipe ontology 2.
First box cupling 3 and the second box cupling 4 with 3 coaxial welding of the first box cupling, first box cupling 3 be set in this first
The periphery of pipeline body 1 is configured with first annular space 5 between first box cupling 3 and the first pipe ontology 1, this second
Box cupling 4 is set in the periphery of the second pipe ontology 2, and second is configured between second box cupling 4 and the second pipe ontology 2
Annular space 6, the first annular space 5 are connected with second annular space 6 and are collectively configured to integral annular closing sky
Between 7, first box cupling 3 be connected with second box cupling 4 and the seam areas of the corresponding integral annular enclosure space 7 construct
There is the first weld seam 8.Specifically, the coated pipeline welding structure of the application is additionally arranged 3 He of the first box cupling compared with prior art
Second box cupling 4, and first box cupling 3 is made to fix the periphery for being set in the first pipe ontology 1, the fixation of the second box cupling 4 is arranged
In the periphery of the second pipe ontology 2, by being connected with second box cupling 4 and the corresponding monoblock type ring in first box cupling 3
The position in Shape closed space 7 is configured with the first weld seam 8, so as to realize that first box cupling 3 and the fixed of the second box cupling 4 connect
It connects, further, being fixedly connected for the first pipe ontology 1 and second pipe ontology 2 is also achieved that, in this way, just eliminating
In the technical process that the position that the first pipe ontology 1 is connected with second pipe ontology 2 is welded, further, effectively
The corrosion-inhibiting coating of seam crossing of the high temperature between first pipe ontology 1 and second pipe ontology 2 when ground is avoided because of welding is made
The case where at damage.
Further, since the technological design of the first pipe ontology 1 and second pipe ontology 2 using no variable-diameter structure, thus,
Greatly increase the concentricity of the first pipe ontology 1 and second pipe ontology 2, also, the technique of this no variable-diameter structure
Design also greatly reduces pipeline blocking, blocking up probability in scale removal process.
In addition, the design of above-mentioned integral annular enclosure space 7, additionally it is possible to which the transmission for effectively slowing down heat avoids
When being welded to the seam areas of the first box cupling 3 and the second box cupling 4, by the heat transfer that generates when welding to corrosion-inhibiting coating,
Further, internal ring wall of the high temperature because being generated when welding to first pipe ontology 1 and second pipe ontology 2 is efficiently avoided
On corrosion-inhibiting coating the case where damaging.
It should be noted that by making the first pipe ontology 1 and second pipe ontology 2 carry out co-axial seal to dock,
So as to be effectively prevented oil, gas is flowed into through the first pipe ontology 1 and seam crossing that second pipe ontology 2 is connected to each other
In integral annular enclosure space 7, further, avoid there is a situation where oil gas reveal.
As shown in Figure 1, in the ratio more preferably in technical solution of the application, in the side of the first pipe ontology 1
Surface construction has the annular expanding part 11 extended towards the second pipe ontology 2, and court is configured in the side end face of the second pipe ontology 2
The annular that the first pipe ontology 1 extends and can be embedded into the inside of the annular expanding part 11 inside contracts portion 21.
It should be noted that the internal structure in the annular expanding part 11 has flaring mouth, that is, the bore of the flaring mouth is along figure
Direction shown in showing gradually increases from left to right；The internal structure that portion 21 is inside contracted in the annular has interior necking, that is, the interior necking
Bore is gradually reduced from right to left along diagrammatically shown direction.
In addition it is also necessary to which explanation, inside contracts the position that portion 21 is in contact in the annular expanding part 11 and annular and distinguishes structure
Compatible faying face is made, the similar faying face is taper surface, by using the combination of taper surface, on the one hand, convenient
The first pipe ontology 1 is docked with second pipe ontology 2, that is, taper surface can play the role of guiding.On the other hand, also
It substantially increases annular expanding part 11 and further increases the first pipe ontology 1 with the annular contact surface for inside contracting portion 21
With the sealing area of second pipe ontology 2, so as to play preferable sealing function, be effectively prevented oil gas through the annular outside
Expansion portion 11 and annular inside contract position that portion 21 is in contact and enter in integral annular enclosure space 7, further, avoid pair
Corrosion-inhibiting coating corresponding to first weld seam, 8 position damages.In addition, by making the annular expanding part 11 and annular inside contract portion
21 positions being in contact are configured with compatible faying face respectively, and it is taper surface to make the faying face similar, to can be with
Play the role of improving the concentricity that the first pipe ontology 1 is connected with each other with the second pipe ontology 2.
It is configured with opening direction as shown in Figure 1, being also schematically shown in figure and inside contracting the outer surface in portion 21 in the annular
First outer ring seal slot 211 of the annular expanding part 11 is embedded with the first seal member 9 in the first outer ring seal slot 211.
Specifically, it by being embedded first seal member 9 in the first outer ring seal slot 211, is extended out so as to enhance the annular
Portion 11 and annular inside contract the leakproofness connected between portion 21, are effectively prevented from oil gas and inside contract portion through the annular expanding part 11 and annular
Gap between 21 and enter in above-mentioned integral annular enclosure space 7, further, avoid causing corruption to the first weld seam 8
Erosion, cause occur oil gas leakage.
It is readily appreciated that, above-mentioned first outer ring seal slot 211 can also be opened in the inner surface of the annular expanding part 11, this first
Seal member 9 is embedded in the first outer ring seal slot 211, and the annular expanding part 11 and annular are sealed to can equally play
Inside contract the effect in the gap between portion 21.
Embodiment 2：
The present embodiment is substantially the same manner as Example 1, brief for description, during the description of the present embodiment, no longer
Technical characteristic same as Example 1 is described, only illustrates the present embodiment difference from Example 1：
As shown in Fig. 2, in the ratio more preferably in technical solution of the application, in the inner surface of the annular expanding part 11
It is configured with first inner ring seal slot 111 of the opening towards the central axial direction of the first pipe ontology 1, it is close in first inner ring
The second seal member 10 is embedded in sealing groove 111.In this way, the first pipe ontology 1 can be enhanced and second pipe ontology 2 is coaxial
The leakproofness for sealing docking, avoids oil gas from being entered in integral annular enclosure space 7 through gap between the two, further
Ground, ground avoid causing to the first weld seam 8 corrosion due to cause that oil gas leakage occurs.It is readily appreciated that, first inner ring
Seal groove 111 can also be provided at the outer surface that annular inside contracts portion 21, which is embedded in first inner ring seal
In slot 111.
In one embodiment, which inside contracts the front end face in portion 21 and is connected to second seal member 10 towards the annular
On the lateral surface for inside contracting portion 21.In this way, by making the front end face that the annular inside contracts portion 21 be connected to second seal member 10
Lateral surface, so as to further enhance the leakproofness connected between the first pipe ontology 1 and second pipe ontology 2,
It avoids oil gas from entering in above-mentioned integral annular enclosure space 7, to causing to corrode at the first weld seam 8, further, avoids sending out
The case where oil generation gas is revealed.
Embodiment 3：
The present embodiment is substantially the same manner as Example 1, brief for description, during the description of the present embodiment, no longer
Technical characteristic same as Example 1 is described, only illustrates the present embodiment difference from Example 1：
As shown in figure 3, in the ratio more preferably in technical solution of the application, in the side of the first pipe ontology 1
Surface construction has the first outer shroud body 112 extended towards the second pipe ontology 2, in the side surface construction of the second pipe ontology 2
There is the first inner ring body 212 of the inside that extends and can be embedded into the first outer shroud body 112 towards the first pipe ontology 1.?
That is the similar connection type for " plug-in " of connection type between the first pipe ontology 1 and second pipe ontology 2,
Using the connection type of plug-in, it can preferably ensure that the first pipe ontology 1 is same when docking with second pipe ontology 2
Axis degree can be effectively prevented from generation in this way, when the inside to first pipe ontology 1 and second pipe ontology 2 is cleared up
Card, stifled phenomenon.
As shown in figure 3, in one embodiment, being connected to each other in the first outer shroud body 112 and the first inner ring body 212
Position be equipped with third seal member 20.It should be noted that due to above-mentioned third seal member 20 play the role of respectively with
Above-mentioned first seal member 9 and the second seal member 10 play the role of it is identical, for save length for the sake of, be not repeated herein.
Embodiment 4：
The present embodiment is substantially the same manner as Example 1, brief for description, during the description of the present embodiment, no longer
Technical characteristic same as Example 1 is described, only illustrates the present embodiment difference from Example 1：
As shown in figure 4, schematically showing that the side end face in the first pipe ontology 1 is configured with towards second pipe in figure
The second inner ring body 113 that road ontology 2 extends, is configured in the side end face of the second pipe ontology 2 towards the first pipe ontology 1
The the second outer shroud body 213 extended, wherein the second inner ring body 113 is embedded into the second outer shroud body 213.It needs
Bright, such connection type is also similar to the connection type for being " plug-in ".It is good due to the connection type for " plug-in "
Place is described in detail in embodiment 3, for the sake of saving length, is not repeated herein.
As shown in figure 4, being also schematically shown in figure opening court is configured in the outer surface of the second inner ring body 113
To the second outer ring seal slot 30 of the second outer shroud body 213, the 4th sealing is embedded in the second outer ring seal slot 30
Part 40.
Embodiment 5：
The present embodiment is substantially the same manner as Example 1, brief for description, during the description of the present embodiment, no longer
Technical characteristic same as Example 1 is described, only illustrates the present embodiment difference from Example 1：
As shown in figure 5, in the ratio more preferably in technical solution of the application, first box cupling 3 be located at this
On inner surface between the position that one pipeline body 1 and the second pipe ontology 2 are connected and the integral annular enclosure space 7
It is configured with the second inner ring seal slot 31, the 5th seal member 311 is embedded in the second inner ring seal slot 31.It needs to illustrate
It is, by the position that the first pipe ontology 1 is connected with the second pipe ontology 2 and the integral annular enclosure space 7
Between inner surface on be configured with the second inner ring seal slot 31, be embedded with the 5th seal member in the second inner ring seal slot 31
311, it inside contracts the gap between portion 21 through the annular expanding part 11 and annular so as to be effectively prevented oil gas and enters
It states in integral annular enclosure space 7, further, avoids because causing that oil gas leakage occurs due to corrosion to first weld seam 8
Situation.
In a specific embodiment, above-mentioned first seal member 9, the second seal member 10, third seal member 20,
4th seal member 40 and the 5th seal member 311 can be fabricated by flexible material (being, for example, silica gel or rubber),
Structure includes one of sealing strip, sealing block, sealing ring sealing ring.
As shown in Figures 1 to 5, in the specific embodiment of the application, in first box cupling 3 and the first pipe
It is configured with the second weld seam 50 between ontology 1, third weld seam 60 is configured between second box cupling 4 and the second pipe ontology 2.
That is, by way of welding is respectively adopted, so that first box cupling 3 links into an integrated entity with first pipe ontology 1, together
When so that second box cupling 4 links into an integrated entity with second pipe ontology 2.Then, by managing first pipe ontology 1 and second
Road ontology 2 carries out co-axial seal docking, and the first box cupling 3 is docked with the second box cupling 4, and is welded simultaneously in docking site
The first weld seam 8 is formed, so as to realize the integrated connection of the first pipe ontology 1 and second pipe ontology 2.
It should be noted that by the way of welding, the fastness of connection can be improved.
In a preferred embodiment, it is docked with 2 co-axial seal of second pipe ontology in the first pipe ontology 1
Position is equipped with sealing mucigel (not shown).Specifically, the setting of the sealing mucigel, can further improve this
The fastness and leakproofness that one pipeline body 1 is docked with second pipe ontology 2.It should be noted that the sealing mucigel can be
Pipe joint glue.
As shown in fig. 6, according to the second aspect of the application, a kind of coated pipeline welding method is also provided, including：
Step S10 welds the contact site of the first box cupling 3 and first pipe ontology 1, so that the first box cupling 3
It is connect with first pipe ontology 1 integral.
Step S20 welds the contact site of the second box cupling 4 and second pipe ontology 2, so that the second box cupling 4
It is connect with second pipe ontology 2 integral.It should be noted that before step S10, need respectively to first pipe ontology 1, the
Two pipeline bodies 2, the first box cupling 3 and the second box cupling 4 are machined.
Step S30, respectively the inner tubal wall of the inner tubal wall to first pipe ontology 1 and second pipe ontology 2 spray.
Step S40 carries out co-axial seal docking to first pipe ontology 1 and second pipe ontology 2.
Step S50, the position being connected to each other with the second box cupling 4 to the first box cupling 3 are welded so that the first box cupling 3 with
Second box cupling 4 connects integral.It can be seen that in the present processes, by adding the first box cupling 3 and the second box cupling 4, and
So that the first box cupling 3 is attached by welding with first pipe ontology 1, simultaneously so that second box cupling 4 and second
Pipeline body 2 is attached by welding, then, by soldered first pipe ontology 1 and second pipe ontology 2
Co-axial seal docking is carried out, then the position being connected with the second box cupling 4 to the first box cupling 3 is welded.In this way, allowing for above-mentioned
First pipe ontology 1, second pipe ontology 2, the first box cupling 3 and the second box cupling 4 have been configured to an entirety.By being connect to first
It is welded at the position that hoop 3 and the second box cupling 4 connect, so that it may to realize the company of the first pipe ontology 1 and second pipe ontology 2
It connects, this just eliminates the technique that the position being connected with second pipe ontology 2 in the first pipe ontology 1 is welded.Into one
Step ground, avoids the high temperature generated when welding to the corrosion-inhibiting coating on the inner tubal wall of first pipe ontology 1 and second pipe ontology 2
The case where damaging.In addition, carrying out the side that co-axial seal docks with second pipe ontology 2 by using first pipe ontology 1
Formula, while ensuring concentricity, there are no the internal diameters for reducing pipeline, therefore, it is possible to be effectively prevented from the inside to pipeline
When being cleared up and there is a phenomenon where cards, stifled.
In a preferred embodiment, this method further include respectively the inner tubal wall to first pipe ontology 1 and second pipe
The inner tubal wall of road ontology 2 carries out anti-corrosion spray.
In conclusion the coated pipeline welding structure of application is additionally arranged the first box cupling 3 and second compared with prior art
Box cupling 4, and first box cupling 3 is made to fix the periphery for being set in the first pipe ontology 1, the fixation of the second box cupling 4 is set in this
The periphery of second pipe ontology 2, by first box cupling 3 be connected with second box cupling 4 and the corresponding integral annular seal
The position for closing space 7 is configured with the first weld seam 8, so as to realize being fixedly connected for first box cupling 3 and the second box cupling 4, into
One step is also achieved that being fixedly connected for the first pipe ontology 1 and second pipe ontology 2, in this way, just eliminate this
The technical process that the position that one pipeline body 1 is connected with second pipe ontology 2 is welded further is effectively prevented from
The corrosion-inhibiting coating of seam crossing of the high temperature between first pipe ontology 1 and the second pipe ontology 2 when because of welding damages
The case where.
Further, since the technological design of the first pipe ontology 1 and second pipe ontology 2 using no variable-diameter structure, thus,
Greatly increase the concentricity of the first pipe ontology 1 and second pipe ontology 2, also, the technique of this no variable-diameter structure
Design also greatly reduces pipeline blocking, blocking up probability in scale removal process.
In addition, the design of above-mentioned integral annular enclosure space 7, additionally it is possible to which the transmission for effectively slowing down heat avoids
When being welded to the seam areas of the first box cupling 3 and the second box cupling 4, by the heat transfer that generates when welding to corrosion-inhibiting coating,
Further, internal ring wall of the high temperature because being generated when welding to first pipe ontology 1 and second pipe ontology 2 is efficiently avoided
On corrosion-inhibiting coating the case where damaging.
It should be noted that by making the first pipe ontology 1 and second pipe ontology 2 carry out co-axial seal to dock,
So as to be effectively prevented oil, gas is flowed into through the first pipe ontology 1 and seam crossing that second pipe ontology 2 is connected to each other
In integral annular enclosure space 7, further, avoid there is a situation where oil gas reveal.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (14)
1. a kind of coated pipeline welding structure, which is characterized in that including：
First pipe ontology and the second pipe ontology docked with the first pipe ontology co-axial seal, wherein described
It is equipped with corrosion-inhibiting coating on the internal ring wall of the internal ring wall of one pipeline body and the second pipe ontology；And
First box cupling and the second box cupling with the first box cupling coaxial welding, first box cupling are set in the first pipe
The periphery of ontology is configured with first annular space between first box cupling and the first pipe ontology, and described second connects
Cuff is located at the periphery of the second pipe ontology, and second is configured between second box cupling and the second pipe ontology
Annular space, the first annular space are connected with second annular space and are collectively configured to integral annular closing sky
Between, it is connected with second box cupling and the seam areas structure of the corresponding integral annular enclosure space in first box cupling
The first weld seam is made.
2. coated pipeline welding structure according to claim 1, which is characterized in that in the side of the first pipe ontology
Surface construction has the annular expanding part extended towards the second pipe ontology, and court is configured in the side end face of the second pipe ontology
The annular that the first pipe ontology extends and can be embedded into the inside of the annular expanding part inside contracts portion.
3. coated pipeline welding structure according to claim 2, which is characterized in that inside contract the outer surface in portion in the annular
Opening is configured with towards the first outer ring seal slot of the annular expanding part, first is embedded in the first outer ring seal slot
Seal member.
4. coated pipeline welding structure according to claim 2, which is characterized in that in the inner surface of the annular expanding part
It is configured with first inner ring seal slot of the opening towards the central axial direction of the first pipe ontology, it is close in first inner ring
The second seal member is embedded in sealing groove.
5. coated pipeline welding structure according to claim 4, which is characterized in that the front end face that the annular inside contracts portion supports
It is connected on the lateral surface that second seal member inside contracts portion towards the annular.
6. coated pipeline welding structure according to claim 1, which is characterized in that in the side of the first pipe ontology
Surface construction has the first outer shroud body extended towards the second pipe ontology, is configured in the side end face of the second pipe ontology
Extend and can be embedded into the first inner ring body of the inside of the first outer shroud body towards the first pipe ontology.
7. coated pipeline welding structure according to claim 6, which is characterized in that the first outer shroud body with it is described
The position that first inner ring body is connected to each other is equipped with third seal member.
8. coated pipeline welding structure according to claim 1, which is characterized in that in the side of the first pipe ontology
Surface construction has the second inner ring body extended towards the second pipe ontology, is configured in the side end face of the second pipe ontology
The the second outer shroud body extended towards the first pipe ontology, wherein the second inner ring body is embedded into second outer shroud
In body.
9. coated pipeline welding structure according to claim 8, which is characterized in that in the appearance of the second inner ring body
Surface construction has second outer ring seal slot of the opening towards the second outer shroud body, is embedded in the second outer ring seal slot
4th seal member.
10. coated pipeline welding structure according to claim 2, which is characterized in that be located at institute in first box cupling
It states interior between the position and the integral annular enclosure space that first pipe ontology and the second pipe ontology are connected
It is configured with the second inner ring seal slot on surface, the 5th seal member is embedded in the second inner ring seal slot.
11. coated pipeline welding structure according to any one of claim 1 to 10, which is characterized in that described first
It is configured with the second weld seam between box cupling and the first pipe ontology, between second box cupling and the second pipe ontology
It is configured with third weld seam.
12. coated pipeline welding structure according to claim 1, which is characterized in that in the first pipe ontology and institute
The position for stating the docking of second pipe ontology co-axial seal is equipped with sealing mucigel.
13. a kind of coated pipeline welding method, which is characterized in that including：
The contact site of first box cupling and first pipe ontology is welded, so that the first box cupling connects with first pipe ontology
It is connected into entirety；
The contact site of second box cupling and second pipe ontology is welded, so that the second box cupling connects with second pipe ontology
It is connected into entirety；
The inner tubal wall of the inner tubal wall to first pipe ontology and second pipe ontology sprays respectively；
Co-axial seal docking is carried out to first pipe ontology and second pipe ontology；
The position being connected to each other with the second box cupling to the first box cupling is welded so that the first box cupling connected into the second box cupling it is whole
Body.
14. according to the method for claim 13, which is characterized in that the method further includes respectively to first pipe ontology
The inner tubal wall of inner tubal wall and second pipe ontology carries out anti-corrosion spray.
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| CN201810847592.9A CN108799650A (en) | 2018-07-27 | 2018-07-27 | A kind of coated pipeline welding structure and its welding method |
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| US11725755B2 (en) * | 2020-10-29 | 2023-08-15 | United Pipeline Systems, Inc. | Connections of lined pipe |
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