CN111322471B - Assembly for splicing underwater immersed tube and application method thereof - Google Patents
Assembly for splicing underwater immersed tube and application method thereof Download PDFInfo
- Publication number
- CN111322471B CN111322471B CN202010276724.4A CN202010276724A CN111322471B CN 111322471 B CN111322471 B CN 111322471B CN 202010276724 A CN202010276724 A CN 202010276724A CN 111322471 B CN111322471 B CN 111322471B
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- Prior art keywords
- immersed
- pipe
- butt joint
- pipe body
- sealing
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 44
- 210000001503 joint Anatomy 0.000 claims abstract description 38
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000003032 molecular docking Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
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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
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/022—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings used with sleeves or nipples for pipes of the same diameter, or with reduction pieces
-
- 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
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
-
- 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
- F16L23/00—Flanged joints
- F16L23/003—Auxiliary devices
-
- 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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
-
- 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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
-
- 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
- F16L2201/00—Special arrangements for pipe couplings
- F16L2201/40—Special arrangements for pipe couplings for special environments
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention provides an assembly for splicing underwater immersed tubes and a use method thereof, wherein the assembly comprises a butt joint part and a sealing sleeve, the butt joint part is used for connecting the tube orifices of two immersed tubes spliced with each other, and the sealing sleeve is used for reinforcing and sealing the spliced immersed tubes and the connecting part of the butt joint part; the butt joint piece comprises a pipe body and a circular plate fixedly arranged in the middle of the outer wall of the pipe body, sealing rings are arranged at two ends of the pipe body, annular grooves for adapting to the flanges of the immersed pipe ports are arranged at two end surfaces of the circular plate, and a plurality of through holes are formed in the annular grooves; the sealing sleeve comprises cover bodies which are mutually butted, the cover bodies are of semi-annular shell structures, extension plates are fixedly arranged at two ends of the cover bodies, the two cover bodies are locked and butted through bolts penetrating through the extension plates to form a closed annular cavity, the annular cavity is matched with a circular plate in shape, and the inner diameter of the annular cavity is equal to the pipe diameter of the immersed pipe; the inner annular wall of the cover body and the bottom surface of the extension plate are stuck with a first sealing gasket; the novel sealing device is novel in structure, can provide multiple sealing effects and is convenient to install.
Description
Technical Field
The invention relates to the field of immersed tube splicing assemblies, in particular to an assembly for underwater immersed tube splicing and a use method thereof.
Background
The underwater immersed tube is generally used for communication, sewage discharge and other pipelines crossing rivers, and the pipelines are formed by connecting a plurality of hard tubes of a few meters, a dozen meters and even tens of meters; in the mode, the sealing performance of the spliced part is critical, and if the spliced part is sealed by a flange plate and a sealing ring, the airtight waterproof performance is required to be improved; the butt joint part with good sealing performance has complex structure, is troublesome to install and is inconvenient for construction operation.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an assembly for splicing underwater immersed tubes and a use method thereof, which have novel structures, can provide multiple sealing effects and are convenient to install.
To achieve the purpose, the invention adopts the following technical scheme:
the invention provides an assembly for splicing underwater immersed tubes, which comprises a butt joint piece and a sealing sleeve, wherein the butt joint piece is used for connecting the tube orifices of two immersed tubes spliced with each other, and the sealing sleeve is used for reinforcing and sealing the spliced immersed tubes and the connecting part of the butt joint piece; the butt joint piece comprises a pipe body and a circular plate fixedly arranged in the middle of the outer wall of the pipe body, wherein sealing rings are arranged at two ends of the pipe body, the circle center of the circular plate coincides with the axis of the pipe body, annular grooves for adapting to flanges of ports of immersed pipes are arranged at two end faces of the circular plate, the circle center of the annular grooves coincides with the axis of the pipe body, the inner diameter of the annular grooves is equal to the outer diameter of the pipe body, a plurality of through holes are formed in the annular grooves, the through holes are distributed in a circumferential array around the circle center of the annular grooves, and when the butt joint piece is used for splicing immersed pipes, the two ends of the pipe body are respectively inserted into pipe orifices of two immersed pipes, the flanges of the two immersed pipes are arranged in the annular grooves and locked through bolts; the sealing sleeve comprises cover bodies which are mutually butted, the cover bodies are of semi-annular shell structures, extension plates are fixedly arranged at two ends of the cover bodies, the two cover bodies are locked and butted through bolts penetrating through the extension plates to form a closed annular cavity, the annular cavity is matched with the circular plate in shape, and the inner diameter of the annular cavity is equal to the outer diameter of the immersed tube; the inner annular wall of the cover body and the bottom surface of the extension plate are adhered with first sealing gaskets.
In the preferred technical scheme of the invention, the outer side wall of the circular plate is also provided with a plurality of threaded holes, and the threaded holes are distributed in a circumferential array around the axis of the circular plate; the outer wall of the cover body is provided with a plurality of round holes, the round holes are arranged corresponding to the threaded holes, and the cover body and the circular plate are reinforced and locked through screws.
In the preferred technical scheme of the invention, the inner walls of the cover bodies are stuck with second sealing gaskets.
In the preferred technical scheme of the invention, at least 3 sealing rings are arranged on the pipe body positioned on one side of the circular plate, and the sealing rings are adhered and fixed with the pipe body.
In the preferred technical scheme of the invention, chamfer angles are arranged at the positions of the ports at the two ends of the pipe body.
In the preferred technical scheme of the invention, the pipe body and the circular plate are of an integrated structure.
The invention also provides a use method of the assembly for splicing the underwater immersed tube, which comprises the following steps:
s1, oppositely placing pipe orifices of two immersed pipes to be spliced, keeping a space between the two immersed pipes sufficient for placing connecting pieces, and realizing alignment of mounting holes on flanges of the two immersed pipes by rotating one immersed pipe;
S2, inserting a pipe body at one end of the butt joint part into a pipe orifice of the immersed pipe, placing the flange plate in the annular groove, enabling the through hole to correspond to the mounting hole of the flange plate in position by rotating the butt joint part, and inserting a bolt for preliminary limiting;
S3, pushing the other immersed tube in a translation way, enabling the tube body at the other end of the butt joint piece to be inserted into the tube orifice of the other immersed tube, and locking the tube body through a bolt;
S4, sleeving the two cover bodies on the outer sides of the circular plates, primarily locking the two cover bodies through bolts, then adjusting the cover bodies to align round holes on the cover bodies with threaded holes of the circular plates, locking through bolts, and then tightening the bolts for locking the cover bodies to finish installation.
The beneficial effects of the invention are as follows:
the assembly for splicing the underwater immersed tube and the use method thereof provided by the invention have novel structures, and the tube body on the butt joint piece can be inserted into the tube orifice of the immersed tube to form a seal; the annular groove and the through hole arranged on the circular plate can be used for adapting and fixing the flange plate of the immersed tube to form two seals; the sealing sleeve forms three seals on the connection part of the butt joint part and the immersed tube, and the integral matching can provide multiple sealing effects and ensure the tightness of immersed tube splicing; and the butt joint part and the immersed tube, and the sealing sleeve and the butt joint part are fixed through bolts, so that the whole installation is simple and the operation is convenient.
Drawings
FIG. 1 is a view showing the state of use of an assembly for splicing underwater immersed tubes according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a docking piece provided in an embodiment of the present invention;
figure 3 is a schematic perspective view of a gland provided in an embodiment of the present invention;
Fig. 4 is a schematic perspective view of a cover according to an embodiment of the present invention.
In the figure:
100. A butt joint member; 110. a tube body; 120. a circular plate; 121. a threaded hole; 130. a seal ring; 140. an annular groove; 150. a through hole; 200. sealing sleeve; 210. a cover body; 211. a through hole; 220. an extension plate; 230. a first gasket; 240. and a second gasket.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 4, an assembly for splicing underwater immersed tubes is disclosed in an embodiment of the present invention, which comprises a butt joint member 100 and a sealing sleeve 200, wherein the butt joint member 100 is used for connecting the tube orifices of two immersed tubes spliced with each other, and the sealing sleeve 200 is used for reinforcing and sealing the spliced immersed tubes and the connection part of the butt joint member 100; the butt joint part 100 comprises a pipe body 110 and a circular plate 120 fixedly arranged in the middle of the outer wall of the pipe body 110, sealing rings 130 are arranged at two ends of the pipe body 110, the circle center of the circular plate 120 coincides with the axis of the pipe body 110, annular grooves 140 for adapting to flanges of ports of immersed pipes are arranged at two end surfaces of the circular plate 120, the circle center of the annular grooves 140 coincides with the axis of the pipe body 110, the inner diameter of the annular grooves 140 is equal to the outer diameter of the pipe body 110, a plurality of through holes 150 are formed in the annular grooves 140, the through holes 150 are distributed in a circumferential array around the circle center of the annular grooves 140, and when the butt joint part 100 is used for splicing immersed pipes, the two ends of the pipe body 110 are respectively inserted into pipe orifices of two immersed pipes, the flanges of the two immersed pipes are arranged in the annular grooves 140 and locked through bolts; the sealing sleeve 200 comprises cover bodies 210 which are mutually butted, the cover bodies 210 are of semi-annular shell structures, extension plates 220 are fixedly arranged at two ends of the cover bodies 210, the two cover bodies 210 are locked and butted through bolts penetrating through the extension plates 220 to form a closed annular cavity, the annular cavity is matched with the circular plate 120 in shape, and the inner diameter of the annular cavity is equal to the outer diameter of the immersed tube; the inner annular wall of the cover 210 and the bottom surface of the extension plate 220 are adhered with a first sealing pad 230.
The assembly for splicing the underwater immersed tube and the use method thereof have novel structures, and the tube body 110 on the butt joint piece 100 can be inserted into the tube orifice of the immersed tube to form a seal; the annular groove 140 and the through hole 150 arranged on the circular plate 120 can be used for adapting and fixing the flange plate of the immersed tube to form two seals; the sealing sleeve 200 forms three seals on the connection part of the butt joint part 100 and the immersed tube, and the integral matching can provide multiple sealing effects and ensure the tightness of immersed tube splicing; and the butt joint part 100 and the immersed tube, and the sealing sleeve 200 and the butt joint part 100 are fixed through bolts, so that the whole installation is simple and the operation is convenient.
Further, the outer side wall of the circular plate 120 is further provided with a plurality of threaded holes 121, and the threaded holes 121 are distributed in a circumferential array around the axis of the circular plate 120; a plurality of round holes 211 are formed in the outer wall of the cover 210, the round holes 211 are arranged corresponding to the threaded holes 121, and the cover 210 and the circular plate 120 are reinforced and locked by screws; the structural design can further strengthen the connection between the cover 210 and the circular plate 120, and strengthen the overall connection stability.
Further, a second gasket 240 is adhered to the inner wall of the cover 210; the design of the second gasket 240 may further enhance the seal between the boot seal 200 and the docking element 100.
Further, at least 3 seal rings 130 are provided on the tube 110 at one side of the circular plate 120, and the seal rings 130 are adhered and fixed to the tube 110; the multiple seal ring 130 design provides a multi-stage seal at the junction of the tubular body 110 and the immersed tube.
Further, chamfer angles are arranged at the positions of the two end ports of the pipe body 110; the structural design can reduce the drop between the pipe body 110 and the inner wall of the immersed tube, and is convenient for the passing of materials or the passing of installation objects.
Further, the pipe body 110 and the circular plate 120 are integrally formed.
The invention also provides a use method of the assembly for splicing the underwater immersed tube, which comprises the following steps:
S1, oppositely placing pipe orifices of two immersed pipes to be spliced, keeping a space between the two immersed pipes sufficient for placing the connecting piece 100, and realizing alignment of mounting holes on flanges of the two immersed pipes by rotating one immersed pipe;
s2, inserting a pipe body 110 at one end of the butt joint piece 100 into the pipe orifice of the immersed pipe, placing the flange plate in the annular groove 140, rotating the butt joint piece 100 to enable the through holes 150 to correspond to the mounting holes of the flange plate, and inserting bolts for preliminary limitation;
S3, pushing the other immersed tube in a translation way, enabling the tube body 110 at the other end of the butt joint piece 100 to be inserted into the tube orifice of the other immersed tube, and locking the tube body by bolts;
S4, sleeving the two cover bodies 210 on the outer sides of the circular plates 120, preliminarily locking the two cover bodies 210 through bolts, then adjusting the cover bodies 210 to align the round holes 211 on the cover bodies 210 with the threaded holes 121 of the circular plates 120, locking through bolts, and then tightening the bolts for locking the cover bodies 210, thereby completing the installation.
While the application has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the application. The application is not to be limited by the specific embodiments disclosed herein, but rather, embodiments falling within the scope of the appended claims are intended to be embraced by the application.
Claims (7)
1. An assembly for splicing underwater immersed tubes, which is characterized in that:
the pipe mouth sealing device comprises a butt joint piece (100) and a sealing sleeve (200), wherein the butt joint piece (100) is used for connecting pipe mouth of two mutually spliced immersed pipes, and the sealing sleeve (200) is used for reinforcing and sealing the spliced immersed pipes and the connecting part of the butt joint piece (100);
The butt joint piece (100) comprises a pipe body (110) and a circular plate (120) fixedly arranged in the middle of the outer wall of the pipe body (110), sealing rings (130) are arranged at two ends of the pipe body (110), the circle center of the circular plate (120) coincides with the axis of the pipe body (110), annular grooves (140) used for adapting to the flanges of the immersed pipe ports are arranged at two end surfaces of the circular plate (120), the circle center of the annular grooves (140) coincides with the axis of the pipe body (110), the inner diameter of the annular grooves (140) is equal to the outer diameter of the pipe body (110), a plurality of through holes (150) are formed in the annular grooves (140), and the through holes (150) are distributed in a circumferential array around the circle center of the annular grooves (140), when the butt joint piece (100) is used for splicing immersed pipes, the two ends of the pipe body (110) are respectively inserted into pipe orifices of two immersed pipes, the flanges of the two immersed pipes are arranged in the annular grooves (140) and locked by bolts;
The sealing sleeve (200) comprises cover bodies (210) which are mutually butted, the cover bodies (210) are of semi-annular shell structures, extension plates (220) are fixedly arranged at two ends of the cover bodies (210), the two cover bodies (210) are locked and butted through bolts penetrating through the extension plates (220) to form a closed annular cavity, the annular cavity is matched with the circular plate (120) in shape, and the inner diameter of the annular cavity is equal to the outer diameter of the immersed tube; the inner annular wall of the cover body (210) and the bottom surface of the extension plate (220) are adhered with a first sealing gasket (230).
2. An assembly for splicing underwater immersed tubes according to claim 1, wherein:
The outer side wall of the circular plate (120) is also provided with a plurality of threaded holes (121), and the threaded holes (121) are distributed in a circumferential array around the axis of the circular plate (120); the outer wall of the cover body (210) is provided with a plurality of round holes (211), the round holes (211) are arranged corresponding to the threaded holes (121), and the cover body (210) and the circular plate (120) are reinforced and locked through screws.
3. An assembly for splicing underwater immersed tubes according to claim 1, wherein:
the inner walls of the cover body (210) are respectively stuck with a second sealing gasket (240).
4. An assembly for splicing underwater immersed tubes according to claim 1, wherein:
at least 3 sealing rings (130) are arranged on the pipe body (110) at one side of the circular plate (120), and the sealing rings (130) are adhered and fixed with the pipe body (110).
5. An assembly for splicing underwater immersed tubes according to claim 1, wherein:
And chamfer angles are arranged at the positions of the ports at the two ends of the pipe body (110).
6. An assembly for splicing underwater immersed tubes according to claim 1, wherein:
the pipe body (110) and the circular plate (120) are of an integrated structure.
7. A method of using an assembly for splicing underwater immersed tubes as claimed in claim 2, wherein:
the method comprises the following steps:
s1, oppositely placing pipe orifices of two immersed pipes to be spliced, keeping a space between the two immersed pipes sufficient for placing a connecting piece (100), and realizing alignment of mounting holes on flanges of the two immersed pipes by rotating one immersed pipe;
S2, inserting a pipe body (110) at one end of the butt joint piece (100) into the pipe orifice of the immersed pipe, placing the flange plate in the annular groove (140), enabling the through hole (150) to correspond to the mounting hole of the flange plate by rotating the butt joint piece (100), and inserting a bolt for preliminary limiting;
S3, pushing the other immersed tube in a translation way, enabling the tube body (110) at the other end of the butt joint piece (100) to be inserted into the tube orifice of the other immersed tube, and locking through a bolt;
S4, sleeving the two cover bodies (210) on the outer sides of the circular plates (120), preliminarily locking the two cover bodies (210) through bolts, then adjusting the cover bodies (210) to align the round holes (211) on the cover bodies (210) with the threaded holes (121) of the circular plates (120), locking through screws, and then tightening the bolts for locking the cover bodies (210), so that the installation is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010276724.4A CN111322471B (en) | 2020-04-10 | 2020-04-10 | Assembly for splicing underwater immersed tube and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010276724.4A CN111322471B (en) | 2020-04-10 | 2020-04-10 | Assembly for splicing underwater immersed tube and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111322471A CN111322471A (en) | 2020-06-23 |
| CN111322471B true CN111322471B (en) | 2024-06-25 |
Family
ID=71169892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010276724.4A Active CN111322471B (en) | 2020-04-10 | 2020-04-10 | Assembly for splicing underwater immersed tube and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111322471B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116557654B (en) * | 2023-07-11 | 2023-09-19 | 鑫鹏源(聊城)智能科技有限公司 | Improved steel pipe connector |
| CN117468508B (en) * | 2023-11-29 | 2024-03-29 | 中交城乡建设规划设计研究院有限公司 | Immersed tube tunnel pipe joint structure |
| CN117345965B (en) * | 2023-12-04 | 2024-02-06 | 山东瓦利斯智能科技有限公司 | Blow-down pipe connecting and sealing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2227778Y (en) * | 1995-06-14 | 1996-05-22 | 中国科学院长春应用化学研究所 | Cross-linked polyethylene pipe joint |
| KR101023940B1 (en) * | 2010-10-14 | 2011-03-28 | 정규호 | Apparatus for connecting plastic pipes |
| CN212004656U (en) * | 2020-04-10 | 2020-11-24 | 广东华坤建设集团有限公司 | Subassembly is used in splicing of immersed tube under water |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2384088Y (en) * | 1999-07-23 | 2000-06-21 | 昆山天星水暖有限公司 | Pipe joint |
| CN102410413A (en) * | 2011-08-23 | 2012-04-11 | 重庆顾地塑胶电器有限公司 | Steel-plastic composite tube connecting structure based on orifice flangings |
| CN103822034B (en) * | 2014-02-27 | 2016-08-24 | 苏氏工业科学技术（北京）有限公司 | A kind of sealing clamp and the attachment structure of a kind of sealing clamp mounting flange |
| CZ27941U1 (en) * | 2015-02-13 | 2015-03-10 | Heckl S.R.O. | Device to protect flanged connections |
| CN209511342U (en) * | 2019-01-31 | 2019-10-18 | 亳州职业技术学院 | A kind of water supply and sewerage pipeline connector of good seal performance |
-
2020
- 2020-04-10 CN CN202010276724.4A patent/CN111322471B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2227778Y (en) * | 1995-06-14 | 1996-05-22 | 中国科学院长春应用化学研究所 | Cross-linked polyethylene pipe joint |
| KR101023940B1 (en) * | 2010-10-14 | 2011-03-28 | 정규호 | Apparatus for connecting plastic pipes |
| CN212004656U (en) * | 2020-04-10 | 2020-11-24 | 广东华坤建设集团有限公司 | Subassembly is used in splicing of immersed tube under water |
Also Published As
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|---|---|
| CN111322471A (en) | 2020-06-23 |
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