CN111188953A - Double-seal socket pressing pipe fitting and assembling method - Google Patents
Double-seal socket pressing pipe fitting and assembling method Download PDFInfo
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- CN111188953A CN111188953A CN202010226491.7A CN202010226491A CN111188953A CN 111188953 A CN111188953 A CN 111188953A CN 202010226491 A CN202010226491 A CN 202010226491A CN 111188953 A CN111188953 A CN 111188953A
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- pipe
- adhesive tape
- sealing adhesive
- welding
- pressing
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- 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
- F16L13/10—Adhesive or cemented joints
- F16L13/11—Adhesive or cemented joints using materials which fill the space between parts of a joint before hardening
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- 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
- F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
- F16L13/16—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Sleeves (AREA)
Abstract
The invention discloses a double-seal socket pressing pipe fitting and an assembly method, wherein the double-seal socket pressing pipe fitting comprises a pipe and a socket pressing welding joint, the pipe is inserted into a welding end from an open end, the part of the pipe, which is positioned in the socket pressing welding joint after being inserted, is an insertion part, the outer wall of the insertion part is sleeved with a circle of sealing adhesive tape, one end of the sealing adhesive tape is flush with the open end, the other end of the sealing adhesive tape is close to the welding end, an anaerobic adhesive layer is filled in a gap between the other end of the sealing adhesive tape and the welding end, and an annular groove is formed in the outer pipe; the pipe fitting and the socket pressing welding joint are tightly connected through annular pressing of a hydraulic tool, and two annular pressing positions of the annular pressing are respectively located at the sealing adhesive tape position and the anaerobic adhesive layer position. The structure and the assembly method of the socket pressing pipe fitting are improved, the glue filling amount can be effectively reduced, the glue overflow phenomenon is prevented, meanwhile, the installation cost is greatly saved, the sealing performance can be improved, and the installation quality of pipeline engineering can be ensured under extreme conditions of high and low temperature areas, high pressure environments and the like.
Description
Technical Field
The invention relates to a pipe fitting and an assembling method, in particular to a double-seal type socket pressing pipe fitting and an assembling method.
Background
The socket pressing type connecting pipe fitting realizes the connecting function, the turning function, the branching function, the conversion function and the like. The novel pipe fitting with the double-layer bell and spigot is mainly applied to pipeline engineering in high-temperature and high-pressure area environments, and in the prior art, the installation method comprises the following steps: the method comprises the steps of coating a layer of anaerobic sealant on the inner wall and the outer wall of the end of the stainless steel pipe, inserting the stainless steel pipe into a double-layer bell and spigot of the pipe after the anaerobic sealant is commonly called as a liquid raw material belt, connecting the pipe and the pipe together in a pressing mode by adopting a special pressing tool, and curing and sealing the sealant which is hermetically filled between the pipe and the pipe in an anoxic state.
The technology has the following defects:
(1) a large amount of anaerobic adhesive is used in the installation process, so that the phenomenon of adhesive overflow during installation is caused.
(2) After the glue is overflowed, the glue in the pressing pipe is not saturated, so that cavities and pores are easy to generate, and leakage points are formed.
(3) Meanwhile, the anaerobic adhesive has certain brittleness after being dried, and certain resilience exists when the stainless steel pipe fitting is mechanically clamped and pressed, so that thorough sealing cannot be achieved, and the pressure resistance of the anaerobic adhesive is insufficient for high-pressure and low-temperature area environments and high-pressure audition.
Disclosure of Invention
The invention aims to solve the problems, solve the problem of insufficient pressure bearing capacity in the high-temperature and high-pressure area environment, eliminate glue overflow phenomenon during pipeline installation and strengthen the sealing double-seal socket pressing pipe fitting for pipeline connection and an assembling method.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a double-seal socket pressing pipe fitting comprises a pipe made of stainless steel materials and a socket pressing welding head, wherein the socket pressing welding head comprises an inner pipe body and an outer pipe body which are arranged in parallel, one end of the socket pressing welding head is welded to be a welding end, the other end of the socket pressing welding head is used for inserting the pipe to be an open end, the pipe is inserted into the welding end from the open end, the part, located in the socket pressing welding head, after being inserted is an insertion part, the outer wall of the insertion part is sleeved with a circle of sealing adhesive tape, one end of the sealing adhesive tape is flush with the open end, the other end of the sealing adhesive tape is close to the welding end, an anaerobic adhesive layer is filled in a gap between the welding end and the insertion part;
the pipe fitting and the socket pressing welding joint are tightly connected through annular pressing of a hydraulic tool, and two annular pressing positions of the annular pressing are respectively located at the sealing adhesive tape position and the anaerobic adhesive layer position.
Preferably, the method comprises the following steps: the sealing adhesive tape is made of fluororubber, silicon rubber or butadiene-acrylonitrile rubber, the thickness of the sealing adhesive tape is 0.6-3.5 mm, the width of the sealing adhesive tape is 20-80mm, and the standard of the anaerobic adhesive is HG/T3737.
An assembly method of a double-seal type socket pressing pipe fitting comprises the following steps:
(1) selecting a pipe, cutting the pipe according to a set length, polishing the cut of the cut pipe on a polishing tool, and removing burrs and rough edges on the periphery of the cut pipe;
(2) selecting an inner pipe body and an outer pipe body which are matched with the pipe, processing an annular groove for embedding a sealing adhesive tape at the position close to the open end on the inner wall of the outer pipe body, and then welding the inner pipe body and the outer pipe body to form a socket press welding joint matched with the pipe;
(3) determining the position of the insertion part according to the length of the pipe inserted into the socket pressing welding joint, sleeving a sealing adhesive tape at the position of the insertion part corresponding to the annular groove, and brushing anaerobic adhesive at the other positions;
(4) inserting the pipe processed in the step (3) into the socket press welding joint in the step (2) and into the welding end, so that the sealing adhesive tape is positioned in the annular groove, and the anaerobic adhesive is positioned between the sealing adhesive tape and the welding end;
(5) and pressing the pipe and the socket press-fit welding joint by using a ring pressing tool, firstly performing ring pressing at the position of the sealing adhesive tape, and then performing ring pressing at the position of the anaerobic adhesive tape.
Compared with the prior art, the invention has the advantages that:
1. the structure of the socket press-fit pipe fitting is improved, the sealing adhesive tape is arranged on the pipe fitting, and the annular groove for embedding the sealing adhesive tape is arranged at the position, corresponding to the sealing adhesive tape, of the inner wall of the outer pipe body of the socket press-fit welding head, so that after the pipe fitting is inserted into the socket press-fit welding head, the anaerobic adhesive can be tightly sealed between the sealing adhesive tape and the welding end; thus, the sealing effect is ensured, the glue filling amount during the previous clamping pressure is reduced, and the glue overflowing phenomenon is prevented.
2. The processing technology is improved, after the pipe fitting is inserted, the sealing adhesive tape is firstly pressed circularly to form a closed space with the welding end, no anaerobic adhesive is pressed circularly, so that no adhesive overflows, and the sealing adhesive tape can effectively compensate the resilience of the deformed stainless steel pipe fitting; and then the anaerobic adhesive in the closed space is circularly pressed, so that the anaerobic adhesive can fill the gap of the welding end, the closed space is filled with the anaerobic adhesive as far as possible, no air hole exists, and the adhesion degree is high.
3. The invention adopts the matching of the sealing adhesive tape, the anaerobic adhesive layer and a specific processing sequence, forms a closed space through the sealing adhesive tape and the first annular pressing, and fills the sealed space with the sealant through the second annular pressing at the anaerobic adhesive position without the adhesive overflowing. The installation cost is greatly saved while the glue filling amount is effectively reduced and the glue overflowing phenomenon is prevented, the sealing performance can be improved, and the quality of pipeline engineering installation can be ensured under extreme conditions of high and low temperature areas, high pressure environments and the like.
4. The sealing adhesive tape adopted by the invention is a widened special sealing adhesive tape, and is made of high-low temperature resistant fluororubber, silicone rubber and nitrile butadiene rubber with long service life, and the service life can reach more than 50 years.
Drawings
FIG. 1 is a cross-sectional view of a structure of the present invention;
FIG. 2 is a cross-sectional view of the socket press weld joint of FIG. 1;
FIG. 3 is a schematic structural view of the pipe of FIG. 1;
FIG. 4 is a schematic view of the ring-pressed structure of the present invention.
In the figure: 1. a pipe; 2. an outer tubular body; 3. an inner tube body; 4. sealing the adhesive tape; 5. an annular groove; 6. carrying out socket pressing on the welding head; 7. an anaerobic adhesive layer; 8. performing first ring pressing; 9. and performing secondary ring pressing.
Detailed Description
The invention will be further explained with reference to the drawings.
Example 1: referring to fig. 1-4, a double-sealed socket press-fit pipe fitting comprises a pipe 1 made of stainless steel material and a socket press-fit welding head 6, wherein the socket press-fit welding head 6 comprises an inner pipe 3 and an outer pipe 2 which are arranged in parallel, one end of the socket press-fit welding head is welded as a welding end, the other end of the socket press-fit welding head is used for inserting the pipe 1 as an open end, the pipe 1 is inserted into the welding end from the open end, the part of the pipe which is positioned in the socket press-fit welding head 6 after being inserted is an insertion part, the outer wall of the insertion part is sleeved with a circle of sealing adhesive tape 4, one end of the sealing adhesive tape 4 is flush with the open end, the other end of the sealing adhesive tape 4 is close to the welding end, an anaerobic adhesive layer 7 is filled in a gap;
the pipe fitting and the socket press-fit welding joint 6 are tightly connected through a hydraulic tool in a ring pressing mode, and the two ring pressing positions of the ring pressing are located at the sealing adhesive tape 4 and the anaerobic adhesive layer 7 respectively.
An assembly method of a double-seal type socket pressing pipe fitting comprises the following steps:
(1) selecting a pipe 1, cutting according to a set length, polishing the cut of the cut pipe 1 on a polishing tool, and removing burrs and rough edges on the periphery of the cut pipe;
(2) selecting an inner pipe body 3 and an outer pipe body 2 matched with the pipe 1, processing an annular groove 5 for embedding a sealing adhesive tape 4 at the position close to an opening end on the inner wall of the outer pipe body 2, and then welding the inner pipe body 3 and the outer pipe body 2 to form a socket press welding joint 6 matched with the pipe 1;
(3) determining the position of an insertion part according to the length of the pipe 1 inserted into the socket pressing welding joint 6, sleeving a sealing adhesive tape 4 at the position of the insertion part corresponding to the annular groove 5, and brushing anaerobic adhesive at the other positions;
(4) inserting the pipe 1 processed in the step (3) into the socket press welding joint 6 in the step (2) and into the welding end, so that the sealing adhesive tape 4 is positioned in the annular groove 5, and the anaerobic adhesive is positioned between the sealing adhesive tape 4 and the welding end;
(5) and (3) pressing the pipe 1 and the socket pressing welding joint 6 by using a ring pressing tool, firstly performing primary ring pressing on the sealing adhesive tape 4, specifically referring to a primary ring pressing position 8 in fig. 4, and then performing primary ring pressing on an anaerobic adhesive position, specifically referring to a secondary ring pressing position 9 in fig. 4.
The present invention has the inserted part of the pipe member divided into two parts, the sealing tape 4 located outside, and the anaerobic adhesive located inside, and when the anaerobic adhesive is dried, the anaerobic adhesive layer 7 is formed. Therefore, the length of the insertion portion, the width and the position of the sealing tape 4 are known in advance and the operation is performed. When the pipe fitting is inserted into the socket press-fit welding joint 6 and is inserted to the bottom, the sealing adhesive tape 4 is just positioned in the annular groove 5, and the anaerobic adhesive is just positioned between the sealing adhesive tape 4 and the welding end. At this time, the sealing tape 4 is pressed, and then the anaerobic adhesive part is pressed.
The sealing adhesive tape 4 can enhance the sealing performance of pipeline engineering, and then the inner part and the outer part of the end part of the pipe 1 are coated with a layer of anaerobic adhesive, so that the adhesive filling amount during the previous clamping and pressing is reduced, the adhesive overflowing phenomenon is prevented, the sealing tape sealing is increased under the original conditions of anaerobic adhesive and clamping and pressing sealing, the sealing performance is enhanced, the using amount of the anaerobic adhesive is reduced, and the installation cost is greatly saved.
Example 2: referring to fig. 1-4, the sealing tape 4 is made of fluororubber, silicon rubber or nitrile rubber, the thickness is 0.6mm-3.5mm, the width is 20-80mm, and the anaerobic adhesive standard is HG/T3737. The rest is the same as in example 1.
In this embodiment, a widened special sealing tape 4 is additionally used on the existing clamping pressure pipeline, for example, about 70 mm, and the material is fluorosilicone rubber which is resistant to high and low temperatures and has a long service life, and the service life of the fluorosilicone rubber can reach more than 20 years, so that the installation quality of pipeline engineering can be ensured under extreme conditions such as high and low temperature areas, high pressure environments and the like.
Example 3: referring to fig. 1-4, in the present embodiment, the thickness of the sealing tape 4 is related to the caliber of the pipe 1, for example, the pipe 1 with the caliber of 15mm, the sealing tape 4 with the thickness of 0.6mm can be used, the pipe 1 with the caliber of 400mm can be used, and the sealing tape 4 with the thickness of 3.5mm can be used. The rest is the same as in example 1.
The invention strengthens the sealing effect of the joint of the pipeline engineering, fills the existence of small gaps caused by the rebound when stainless steel is clamped and pressed, can adapt to the pipeline engineering in various area environments, and can effectively reduce the glue overflow phenomenon of anaerobic glue and the using amount of the anaerobic glue by experimental verification on the prior art, so that the sealing performance of the pipeline engineering is stronger in high and low temperature climate and high pressure resistant environments.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. The utility model provides a double-sealing formula socket joint pressfitting pipe fitting, includes tubular product and socket joint pressfitting soldered connection that stainless steel material made, socket joint pressfitting soldered connection includes interior body and outer body, the two parallel arrangement, and one end welding is the welding end, and the other end supplies tubular product to insert for the opening end, its characterized in that: the pipe is inserted into the welding end from the open end, the part of the pipe, which is positioned in the socket press welding joint after being inserted, is an insertion part, the outer wall of the insertion part is sleeved with a circle of sealing adhesive tape, one end of the sealing adhesive tape is flush with the open end, the other end of the sealing adhesive tape is close to the welding end, an anaerobic adhesive layer is filled in a gap between the other end of the sealing adhesive tape and the welding end, and an annular groove for the sealing adhesive tape to be embedded in is formed in the outer pipe body;
the pipe fitting and the socket pressing welding joint are tightly connected through annular pressing of a hydraulic tool, and two annular pressing positions of the annular pressing are respectively located at the sealing adhesive tape position and the anaerobic adhesive layer position.
2. The double-sealed socket press fitting pipe fitting of claim 1, wherein: the sealing adhesive tape is made of fluororubber, silicon rubber or butadiene-acrylonitrile rubber, the thickness of the sealing adhesive tape is 0.6-3.5 mm, the width of the sealing adhesive tape is 20-80mm, and the standard of the anaerobic adhesive is HG/T3737.
3. The assembling method of the double-seal socket press fitting pipe fitting according to claim 1, wherein: the method comprises the following steps:
(1) selecting a pipe, cutting the pipe according to a set length, polishing the cut of the cut pipe on a polishing tool, and removing burrs and rough edges on the periphery of the cut pipe;
(2) selecting an inner pipe body and an outer pipe body which are matched with the pipe, processing an annular groove for embedding a sealing adhesive tape at the position close to the open end on the inner wall of the outer pipe body, and then welding the inner pipe body and the outer pipe body to form a socket press welding joint matched with the pipe;
(3) determining the position of the insertion part according to the length of the pipe inserted into the socket pressing welding joint, sleeving a sealing adhesive tape at the position of the insertion part corresponding to the annular groove, and brushing anaerobic adhesive at the other positions;
(4) inserting the pipe processed in the step (3) into the socket press welding joint in the step (2) and into the welding end, so that the sealing adhesive tape is positioned in the annular groove, and the anaerobic adhesive is positioned between the sealing adhesive tape and the welding end;
(5) and pressing the pipe and the socket press-fit welding joint by using a ring pressing tool, firstly performing ring pressing at the position of the sealing adhesive tape, and then performing ring pressing at the position of the anaerobic adhesive tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010226491.7A CN111188953A (en) | 2020-03-27 | 2020-03-27 | Double-seal socket pressing pipe fitting and assembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010226491.7A CN111188953A (en) | 2020-03-27 | 2020-03-27 | Double-seal socket pressing pipe fitting and assembling method |
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| Publication Number | Publication Date |
|---|---|
| CN111188953A true CN111188953A (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010226491.7A Pending CN111188953A (en) | 2020-03-27 | 2020-03-27 | Double-seal socket pressing pipe fitting and assembling method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294490A (en) * | 2021-12-01 | 2022-04-08 | 国营芜湖机械厂 | 24-degree flareless conduit pipe sleeve assembly |
| CN114992399A (en) * | 2022-05-25 | 2022-09-02 | 中铁建工集团有限公司 | Adhesive clamping and pressing type stainless steel pipe connecting method |
-
2020
- 2020-03-27 CN CN202010226491.7A patent/CN111188953A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294490A (en) * | 2021-12-01 | 2022-04-08 | 国营芜湖机械厂 | 24-degree flareless conduit pipe sleeve assembly |
| CN114992399A (en) * | 2022-05-25 | 2022-09-02 | 中铁建工集团有限公司 | Adhesive clamping and pressing type stainless steel pipe connecting method |
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