CN113357467A - Pouring sealing waterproof structure of pipeline expansion joint and construction method - Google Patents
Pouring sealing waterproof structure of pipeline expansion joint and construction method Download PDFInfo
- Publication number
- CN113357467A CN113357467A CN202110661301.9A CN202110661301A CN113357467A CN 113357467 A CN113357467 A CN 113357467A CN 202110661301 A CN202110661301 A CN 202110661301A CN 113357467 A CN113357467 A CN 113357467A
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- pipeline
- material injection
- expansion joint
- pipe
- liquid coating
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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
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/005—Expansion-compensation arrangements for pipe-lines for concrete pipe-lines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
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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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Joints Allowing Movement (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a pouring sealing waterproof structure of a pipeline expansion joint and a construction method, wherein the pouring sealing waterproof structure is arranged in an expansion joint of an adjacent concrete pipeline and comprises embedded flanges, an expansion compensation structure and liquid coating, the embedded flanges are arranged on the end surfaces of the concrete pipeline, the expansion compensation structure is connected between the two embedded flanges, and the liquid coating is arranged in the expansion compensation structure and is positioned between the expansion compensation structure and the concrete pipeline. According to the invention, the pouring seal groove is formed between the telescopic compensation structure and the concrete pipeline port, the liquid coating is injected, the medium in the concrete pipeline is isolated from the outside through the liquid coating, and meanwhile, the bonding strength of the telescopic compensator and the pipe wall can be effectively enhanced after the liquid coating is cured, so that long-term protection is realized in the whole life cycle of the concrete pipeline engineering for conveying the medium, even the maintenance-free operation in the whole life cycle is thoroughly realized, and the safety and the durability of normal operation are effectively guaranteed.
Description
Technical Field
The invention relates to the technical field of pipeline corrosion prevention, in particular to a filling, sealing and waterproof structure of a pipeline expansion joint and a construction method.
Background
The expansion joint is an important accessory facility for the water delivery engineering of the concrete structure and is used for adjusting the change of the relative position between adjacent pipelines caused by the change of temperature. Most expansion joints at present adopt pre-buried waterstop or adopt the clamp plate form to reach and satisfy structural deformation and waterproof requirement.
When the waterstop structure is adopted, because the shrinkage rates of the waterstop and cement are different, after the waterstop structure is used for a period of time, a gap is formed between the waterstop and the cement, and a medium conveyed in a pipeline permeates to cause leakage; and because cement has certain corrosion effect on rubber, the aging of the water stop is accelerated, so the durability and the water leakage stopping effect of the structure are poor.
When the pressing plate form is adopted, the sealing glue is filled in the water stop and the pressing plate piece, the sealing glue cannot be spread evenly by the pressing plate, and in addition, the fastening bolt and the pressing plate have a gap, so that the medium can be leaked from the gap, and the long-time sealing effect cannot be achieved. Because seams exist when general water stops are arranged in a circular mode, leakage hidden danger exists in the seams; and the gap of the common expansion joint is smaller, especially the expansion joint of the water conveying pipeline, the operation space is small, and the installation and the replacement are inconvenient. The invention provides a pouring sealing waterproof structure of a pipeline expansion joint and a construction method thereof, which solve the problems.
Disclosure of Invention
The invention provides a pouring sealing waterproof structure of a pipeline expansion joint and a construction method, wherein a pouring sealing groove is formed, and liquid paint is injected into a groove for isolation and corrosion prevention, so that the problems of expansion joint sealing durability and leakage are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a perfusion sealing waterproof structure of a pipeline expansion joint is arranged in an expansion joint of adjacent concrete pipelines and comprises pre-buried flanges, an expansion compensation structure and liquid coating, wherein the pre-buried flanges are arranged on the end faces of the concrete pipelines, the expansion compensation structure is connected between the two pre-buried flanges, and the liquid coating is arranged in the expansion compensation structure and is positioned between the expansion compensation structure and the concrete pipelines;
the telescopic compensation structure comprises a connecting and injecting structure, a telescopic pipe and an anti-impact barrel, the connecting and injecting structure is respectively arranged on the two embedded flanges, the telescopic pipe and the anti-impact barrel are connected between the two connecting and injecting structures, and the telescopic pipe is positioned on the outer side of the anti-impact barrel;
the connecting and injecting structure comprises an injecting groove, a fixed flange and a connecting plate, the fixed flange is fixedly connected to the pre-buried flange, the injecting groove is arranged on an inner side ring of the fixed flange, liquid coating is arranged in the injecting groove, the connecting plate is located on an inner end face of the injecting groove, the end portion of the telescopic pipe is connected to the connecting plate, and the end portion of the impact-proof barrel is connected to the injecting groove.
Furthermore, the outer side ring surface of the material injection groove is attached to the inner wall surface of the concrete pipeline to form an annular injection sealing groove, and the liquid coating is located in the injection sealing groove.
Furthermore, a through hole is formed in the inner end face of the material injection groove, a material injection pipe and an exhaust pipe are arranged on the through hole, a material injection pipe and an exhaust pipe are respectively arranged on each pouring sealing groove, the exhaust pipe is arranged at the bottom end of each pouring sealing groove, and the material injection pipe is arranged at the top end of each pouring sealing groove.
Furthermore, a sealing gasket is arranged on the material injection groove and fixedly connected to the outer end face of the material injection groove.
Further, one end of the impact-proof cylinder is fixedly connected to the inner wall of the material injection groove through a fixing rivet, and the other end of the impact-proof cylinder is in a free state and is attached to the inner side wall surface of the material injection groove on the end surface of the adjacent concrete pipeline.
Furthermore, a laminating sealing gasket is arranged between the free end of the impact-proof cylinder and the inner side wall surface of the material injection groove.
Furthermore, the outer surfaces of the connecting and injecting structure, the telescopic pipe and the impact-proof cylinder are all provided with anticorrosive coatings.
Furthermore, the connecting and injecting structure is of an integrated structure, and liquid anticorrosive paint is coated between the fixed flange and the embedded flange.
A construction method of a pouring sealing waterproof structure of a pipeline expansion joint comprises the following steps:
s1, component production: when the concrete pipeline is poured, the embedded flanges are poured together for embedding;
s2, flange connection: firstly, performing anti-corrosion treatment on the connecting and injecting structure, and then connecting and fixing the connecting and injecting structure with the embedded flange;
s3, installing a pipeline: the telescopic pipe and the anti-impact barrel are subjected to anti-corrosion treatment and are sequentially installed from inside to outside;
s4, paint injection: and installing a material injection pipe and an exhaust pipe on the through hole of the material injection groove, injecting liquid coating from the material injection pipe until the coating overflows in the exhaust pipe, plugging the material injection pipe, and removing the material injection pipe and the exhaust pipe after the liquid coating is cured to finish the construction of the pouring sealed waterproof structure.
Further, in step S2, when the connecting and injecting structure is installed, the inner disk surface of the fixed flange is coated with the liquid paint and then is connected and fastened with the embedded flange through the bolts.
The invention has the following beneficial effects:
according to the structure, the filling sealing groove is formed at the telescopic joint of the pipeline, the liquid coating is injected into the filling sealing groove, the pipeline and the expansion joint between the pipeline and the liquid coating are isolated from media in the pipeline, and meanwhile, the liquid coating can effectively enhance the bonding strength between the telescopic joint and the pipe wall after being solidified, so that the telescopic joint is sealed for a long time, and the liquid coating has better corrosion resistance;
the liquid coating has long service life, still has good waterproof and anticorrosion effects after long-time use and solidification, and ensures that the concrete pipeline expansion joint plays a maintenance-free role in a longer time;
the invention has the advantages of simple structure, convenient installation, convenient replacement and maintenance and strong applicability.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the part A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the connecting injection structure of the present invention;
fig. 4 is a schematic cross-sectional view of the connecting injection structure of the present invention.
Reference numerals: the concrete pipe comprises a concrete pipe 1, a pre-embedded flange 2, a telescopic compensation structure 3, a connecting and injecting structure 31, an injecting groove 311, a fixed flange 312, an engaging plate 313, a sealing gasket 314, a telescopic pipe 32, an anti-impact barrel 33, an injecting pipe 34, an exhaust pipe 35 and a liquid coating 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
As shown in fig. 1 and 2, a sealed waterproof structure that fills of pipeline telescopic joint establishes in adjacent concrete conduit 1's expansion joint, including pre-buried flange 2, flexible compensation structure 3 and liquid coating 4, pre-buried flange 2 is established on concrete conduit 1's terminal surface, as flexible compensation structure 3's connection basis, flexible compensation structure 3 connects between two pre-buried flanges 2, liquid coating 4 is established in flexible compensation structure 3 to be located between flexible compensation structure 3 and the concrete conduit 1.
As shown in fig. 1 and 2, further, flexible compensation structure 3 is including connecting notes material structure 31, flexible pipe 32 and protecting against shock a section of thick bamboo 33, connect notes material structure 31 and establish respectively on two pre-buried flanges 2, play the effect as the connection basis to be used for forming simultaneously and fill the seal groove, flexible pipe 32 and protecting against shock a section of thick bamboo 33 are connected between two connection notes material structures 31, flexible pipe 32 is located the outside of protecting against shock a section of thick bamboo 33, flexible pipe 32 is flexible along with the pipeline deformation carries out the self-adaptation to block the medium, avoid the seepage, protecting against shock a section of thick bamboo 33 is used for bearing the medium impact in the pipeline, and the flexible pipe 32 of direct impact of avoiding the medium causes the damage.
As shown in fig. 3 and 4, further, the connecting and injecting structure 31 includes an injecting groove 311, a fixing flange 312 and a connecting plate 313, the fixing flange 312 is fixedly connected to the embedded flange 2 as a fixing support of the foundation, the injecting groove 311 is arranged on the inner side of the fixing flange 312 and forms a pouring seal groove with the concrete pipe 1, the liquid coating 4 is arranged in the pouring seal groove to play roles of isolating a medium and preventing water and corrosion, the connecting plate 313 is located on the inner end surface of the injecting groove 311, the end of the telescopic pipe 32 is connected to the connecting plate 313, and the end of the impact preventing cylinder 33 is connected to the injecting groove 311.
The principle of the invention is as follows: connect flexible pipe 32 between the adjacent material structure 31 of annotating of connecting and form the telescopic joint, when the pipeline structure warp, flexible pipe 32 carries out the self-adaptation and stretches out and draws back and satisfy the pipeline and warp, keeps still keeping the whole sealed effect of pipeline telescopic joint simultaneously, has realized still playing waterproof sealing effect when the pipeline structure warp, and above-mentioned structure is used as ripe pipeline telescopic joint. According to the invention, the material injection groove 311 is arranged in the connecting material injection structure 31, the material injection groove 311 is arranged on the concrete pipeline and forms a pouring sealing groove together, the liquid coating 4 is injected into the pouring sealing groove, and a medium flowing in the pipeline is isolated from the end surface of the concrete pipeline through the structural characteristics of the material injection groove 311 and a double-layer structure formed by the material injection groove and the liquid coating 4, so that the medium is prevented from leaking and further corroding the pipeline, a good waterproof and anticorrosion effect is achieved, and the deformation and waterproof requirements at the expansion joint are effectively met.
When pouring into liquid coating 4 in pouring the seal groove, liquid coating 4 has certain pressure for liquid coating 4 combines with the concrete pipe, plays the effect of insulating water, then produces certain cohesion after liquid coating 4 solidifies, makes the concrete pipe more firm with connecting the combination between annotating the material structure 31, avoids steam to invade, plays long-term waterproof effect, has long-time non-maintaining's effect.
As shown in fig. 1 and 2, further, an outer annular surface of the injection groove 311 is fitted to an inner wall surface of the concrete pipe 1 to form an annular injection sealing groove, and the liquid coating 4 is located in the injection sealing groove.
Preferably, the embedded flange 2 and the fixing flange 312 are provided with corresponding threaded holes,
as shown in fig. 1 and 2, further, a through hole is provided on an inner end surface of the material injection groove 311, a material injection pipe 34 and an exhaust pipe 35 are provided on the through hole, a material injection pipe 34 and an exhaust pipe 35 are respectively provided on each of the pouring seal grooves, the exhaust pipe 35 is provided at a bottom end of the pouring seal groove, and the material injection pipe 34 is provided at a top end of the pouring seal groove.
Preferably, the outer end of the exhaust pipe 35 is provided with a nylon net for preventing foreign matters from entering.
As shown in fig. 2, a sealing gasket 314 is further disposed on the material injection groove 311, and the sealing gasket 314 is fixedly connected to an outer end surface of the material injection groove 311.
Preferably, the sealing gasket 314 is fixedly connected to the material injection groove 311 through a rivet, and the sealing gasket 314 plays roles of isolation and buffering, so that the liquid coating 4 in the material injection groove 311 is prevented from leaking.
Further, one end of the impact prevention cylinder 33 is fixedly connected to the inner wall of the material injection groove 311, and the other end is in a free state and is attached to the inner wall surface of the material injection groove 311 on the end surface of the adjacent concrete pipeline 1.
Further, a joint sealing gasket is arranged between the free end of the impact-proof cylinder 33 and the inner side wall surface of the material injection groove 311.
Preferably, the one end of a protecting against shock section of thick bamboo 33 is passed through fixing rivet and is connected on a notes silo 311, is equipped with the sealed pad of laminating on the outer wall of the other end to seal up the laminating on another notes silo 311 through the laminating, when the pipeline expansion joint is flexible, the free end of a protecting against shock section of thick bamboo 33 carries out the free movement, and through the sealed effect of sealed pad holding of laminating and notes silo 311.
Further, the outer surfaces of the connecting and injecting structure 31, the telescopic pipe 32 and the impact-proof cylinder 33 are all provided with an anti-corrosion coating.
Preferably, the impact-proof cylinder 33 is a spring steel plate cylinder.
Preferably, the extension tube 32 is welded to the connector plate 313.
Further, the connecting and injecting structure 31 is an integrated structure, and a liquid anticorrosive paint is coated between the fixed flange 312 and the embedded flange 2.
Preferably, the liquid coating 4 is a liquid high-performance solvent-free epoxy anticorrosive coating. Liquid coating 4 plays isolated sealed effect when being liquid, has certain cohesion after its solidification, will connect to annotate material structure 31 and pipeline end portion and combine, and the durability of reinforcing waterproof construction effectively promotes anticorrosive effect, has long-time non-maintaining's effect.
A construction method of a pouring sealing waterproof structure of a pipeline expansion joint comprises the following steps:
s1, component production: when the concrete pipeline 1 is poured, the embedded flanges 2 are poured together for embedding;
s2, flange connection: firstly, performing anti-corrosion treatment on the connecting and injecting structure 31, and then connecting and fixing the connecting and injecting structure with the embedded flange 2;
s3, installing a pipeline: the telescopic pipe 32 and the impact-proof cylinder 33 are subjected to antiseptic treatment and are sequentially installed from inside to outside;
s4, paint injection: installing a material injection pipe 34 and an exhaust pipe 35 on a through hole of the material injection groove 311, then injecting the liquid coating 4 from the material injection pipe 34 until the coating overflows from the exhaust pipe 35, then plugging the material injection pipe 34, and after the liquid coating 4 is cured, removing the material injection pipe 34 and the exhaust pipe 35 to complete the construction of the pouring sealing waterproof structure.
Further, in step S2, when the connecting injection structure 31 is installed, the inner disk surface of the fixing flange 312 is coated with the liquid paint, and then the fixing flange and the embedded flange 2 are connected and fastened by bolts.
Further, in step S1, when the existing pipeline is modified, the embedded flange 2 is fixed to the pipeline by using expansion bolts on the end face of the pipeline, and then the subsequent installation and fixation of the connecting and injecting structure 31 are performed.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (10)
1. A perfusion sealing waterproof structure of a pipeline expansion joint is arranged in an expansion joint of adjacent concrete pipelines (1), and is characterized by comprising embedded flanges (2), an expansion compensation structure (3) and liquid coating (4), wherein the embedded flanges (2) are arranged on the end faces of the concrete pipelines (1), the expansion compensation structure (3) is connected between the two embedded flanges (2), and the liquid coating (4) is arranged in the expansion compensation structure (3) and is positioned between the expansion compensation structure (3) and the concrete pipelines (1);
the telescopic compensation structure (3) comprises a connecting and injecting structure (31), a telescopic pipe (32) and an anti-impact barrel (33), the connecting and injecting structure (31) is respectively arranged on the two embedded flanges (2), the telescopic pipe (32) and the anti-impact barrel (33) are connected between the two connecting and injecting structures (31), and the telescopic pipe (32) is positioned on the outer side of the anti-impact barrel (33);
connect and annotate material structure (31) and include notes silo (311), mounting flange (312) and link up fishplate bar (313), mounting flange (312) fixed connection is on pre-buried flange (2), the inboard circle in mounting flange (312) is established in notes silo (311), liquid coating (4) are established in notes silo (311), link up fishplate bar (313) are located the interior terminal surface of annotating silo (311), the end connection of flexible pipe (32) is on link up fishplate bar (313), the end connection of protecting against shock section of thick bamboo (33) is on annotating silo (311).
2. The perfusion sealing waterproof structure of the pipeline expansion joint as claimed in claim 1, wherein: the outer side ring surface of the material injection groove (311) is attached to the inner wall surface of the concrete pipeline (1) to form an annular injection sealing groove, and the liquid coating (4) is located in the injection sealing groove.
3. The perfusion sealing waterproof structure of the pipeline expansion joint as claimed in claim 1, wherein: the inner end face of the material injection groove (311) is provided with a through hole, the through hole is provided with a material injection pipe (34) and an exhaust pipe (35), each material injection pipe (34) and one exhaust pipe (35) are arranged on each filling sealing groove respectively, the exhaust pipes (35) are arranged at the bottom ends of the filling sealing grooves, and the material injection pipes (34) are arranged at the top ends of the filling sealing grooves.
4. The perfusion sealing waterproof structure of the pipeline expansion joint as claimed in claim 1, wherein: and a sealing gasket (314) is arranged on the material injection groove (311), and the sealing gasket (314) is fixedly connected to the outer end surface of the material injection groove (311).
5. The perfusion sealing waterproof structure of the pipeline expansion joint as claimed in claim 1, wherein: one end of the impact-proof cylinder (33) is fixedly connected to the inner wall of the material injection groove (311) through a fixing rivet, and the other end of the impact-proof cylinder is in a free state and is attached to the inner side wall surface of the material injection groove (311) on the end surface of the adjacent concrete pipeline (1).
6. The perfusion sealing waterproof structure of the pipeline expansion joint as claimed in claim 5, wherein: and a joint sealing gasket is arranged between the free end of the impact-proof cylinder (33) and the inner side wall surface of the injection groove (311).
7. The perfusion sealing waterproof structure of the pipeline expansion joint as claimed in claim 1, wherein: and the outer surfaces of the connecting and injecting structure (31), the telescopic pipe (32) and the impact-proof cylinder (33) are all provided with anticorrosive coatings.
8. The perfusion sealing waterproof structure of the pipeline expansion joint as claimed in claim 1, wherein: the connecting and injecting structure (31) is of an integrated structure, and liquid anticorrosive paint is coated between the fixed flange (312) and the embedded flange (2).
9. The construction method of the perfusion sealing waterproof structure of the pipeline expansion joint as claimed in any one of claims 1 to 8, which is characterized by comprising the following steps:
s1, component production: when the concrete pipeline (1) is poured, the embedded flanges (2) are poured together for embedding;
s2, flange connection: firstly, performing anti-corrosion treatment on the connecting and injecting structure (31), and then connecting and fixing the connecting and injecting structure with the embedded flange (2);
s3, installing a pipeline: the telescopic pipe (32) and the impact-proof barrel (33) are subjected to antiseptic treatment and are sequentially installed from inside to outside;
s4, paint injection: installing a material injection pipe (34) and an exhaust pipe (35) on a through hole of the material injection groove (311), then injecting liquid coating (4) from the material injection pipe (34) until the coating in the exhaust pipe (35) overflows, then plugging the material injection pipe (34), and after the liquid coating (4) is cured, removing the material injection pipe (34) and the exhaust pipe (35) to finish the construction of the pouring sealing waterproof structure.
10. The construction method of the perfusion sealing waterproof structure of the pipeline expansion joint as claimed in claim 9, wherein the construction method comprises the following steps: in step S2, when the connecting and injecting structure (31) is installed, the inner disk surface of the fixed flange (312) is coated with the liquid paint, and then the inner disk surface is connected and fastened with the embedded flange (2) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110661301.9A CN113357467B (en) | 2021-06-15 | 2021-06-15 | Pouring sealing waterproof structure of pipeline expansion joint and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110661301.9A CN113357467B (en) | 2021-06-15 | 2021-06-15 | Pouring sealing waterproof structure of pipeline expansion joint and construction method |
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| Publication Number | Publication Date |
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| CN113357467A true CN113357467A (en) | 2021-09-07 |
| CN113357467B CN113357467B (en) | 2022-10-04 |
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| FR998495A (en) * | 1945-10-13 | 1952-01-18 | Stup Procedes Freyssinet | Pipe joints, particularly suitable for concrete pipes |
| CN201475503U (en) * | 2009-07-15 | 2010-05-19 | 江苏华耐衬里材料有限公司 | Wall-penetrating sealing structural part with telescopic function |
| CN202371736U (en) * | 2011-11-07 | 2012-08-08 | 北京恺岚一方科技发展有限公司 | Steel internal cylinder chimney expansion joint anticorrosion system used after wet desulphurization |
| CN103669292A (en) * | 2013-12-24 | 2014-03-26 | 河南省水利勘测设计研究有限公司 | Concrete joint water stop structure and construction method thereof |
| CN105017938A (en) * | 2015-07-29 | 2015-11-04 | 洛阳双瑞防腐工程技术有限公司 | Anticorrosive coating used for drinking water pipeline and preparation method thereof |
| CN206582460U (en) * | 2017-01-23 | 2017-10-24 | 江西省稻都管业有限公司 | A kind of ecad extension type hot-water heating pipe |
-
2021
- 2021-06-15 CN CN202110661301.9A patent/CN113357467B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR998495A (en) * | 1945-10-13 | 1952-01-18 | Stup Procedes Freyssinet | Pipe joints, particularly suitable for concrete pipes |
| CN201475503U (en) * | 2009-07-15 | 2010-05-19 | 江苏华耐衬里材料有限公司 | Wall-penetrating sealing structural part with telescopic function |
| CN202371736U (en) * | 2011-11-07 | 2012-08-08 | 北京恺岚一方科技发展有限公司 | Steel internal cylinder chimney expansion joint anticorrosion system used after wet desulphurization |
| CN103669292A (en) * | 2013-12-24 | 2014-03-26 | 河南省水利勘测设计研究有限公司 | Concrete joint water stop structure and construction method thereof |
| CN105017938A (en) * | 2015-07-29 | 2015-11-04 | 洛阳双瑞防腐工程技术有限公司 | Anticorrosive coating used for drinking water pipeline and preparation method thereof |
| CN206582460U (en) * | 2017-01-23 | 2017-10-24 | 江西省稻都管业有限公司 | A kind of ecad extension type hot-water heating pipe |
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|---|---|
| CN113357467B (en) | 2022-10-04 |
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Inventor after: Zhang Linghai Inventor after: Gao Xuekui Inventor after: Cui Ningri Inventor before: Zhang Linghai Inventor before: Chen Wuchao Inventor before: Gao Xuekui Inventor before: Cui Ningri |
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Effective date of registration: 20230407 Address after: No. 99, Kaifa 22nd Road, Shenyang Economic and Technological Development Zone, Liaoning Province, 110027 Patentee after: Shenyang Mingke Controlling Corrosion Technology Co.,Ltd. Address before: 110000 No. 99, No. 22 Road, economic and Technological Development Zone, Tiexi District, Shenyang City, Liaoning Province Patentee before: Shenyang Mingke Controlling Corrosion Technology Co.,Ltd. Patentee before: Mingke technology industry (Liaoning) Co.,Ltd. |
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