CN114687344A - Seawater corrosion resistant internal clamping type mechanical locking device - Google Patents
Seawater corrosion resistant internal clamping type mechanical locking device Download PDFInfo
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- CN114687344A CN114687344A CN202011573892.6A CN202011573892A CN114687344A CN 114687344 A CN114687344 A CN 114687344A CN 202011573892 A CN202011573892 A CN 202011573892A CN 114687344 A CN114687344 A CN 114687344A
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- 238000005260 corrosion Methods 0.000 title claims abstract description 39
- 239000013535 sea water Substances 0.000 title claims abstract description 27
- 230000007797 corrosion Effects 0.000 title claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims abstract description 56
- 238000000576 coating method Methods 0.000 claims abstract description 56
- 238000004873 anchoring Methods 0.000 claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 36
- 239000004593 Epoxy Substances 0.000 claims description 20
- 239000000919 ceramic Substances 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 18
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 11
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 11
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 11
- 239000004571 lime Substances 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 9
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 9
- 229920002545 silicone oil Polymers 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 239000004952 Polyamide Substances 0.000 claims description 8
- 229920002647 polyamide Polymers 0.000 claims description 8
- 210000002435 tendon Anatomy 0.000 claims description 8
- 229910019142 PO4 Inorganic materials 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 239000010452 phosphate Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- -1 phosphate ester modified acrylate Chemical class 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 3
- 235000019792 magnesium silicate Nutrition 0.000 claims description 3
- 239000000391 magnesium silicate Substances 0.000 claims description 3
- ZADYMNAVLSWLEQ-UHFFFAOYSA-N magnesium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[Mg+2].[Si+4] ZADYMNAVLSWLEQ-UHFFFAOYSA-N 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000008439 repair process Effects 0.000 abstract description 3
- 238000009991 scouring Methods 0.000 abstract description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000005524 ceramic coating Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000010220 ion permeability Effects 0.000 description 1
- 229910000398 iron phosphate Inorganic materials 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
- E02D5/526—Connection means between pile segments
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses an internal clamping type mechanical locking device resistant to seawater corrosion, which comprises an upper rib locking sleeve, a lower rib locking sleeve, a top expansion type screw tail taper pin and a triangular prism pin, wherein the upper rib locking sleeve is fixedly connected with the upper rib locking sleeve; the outer surfaces of the upper tendon-locking sleeve, the lower tendon-locking sleeve, the top-expanded screw-tail conical pin and the triangular pin are coated with an outer anticorrosive layer; and inner anti-corrosion layers are coated on the inner surfaces of the upper inner thread section, the upper anchoring section, the top of the opening, the lower inner thread section, the cavity part and the lower anchoring section. The anti-corrosion layer is added to the original internal clamping type mechanical locking device, the seawater corrosion can be effectively prevented, in addition, the coating repair layer is additionally arranged on the outer surface of the external anti-corrosion layer, the anti-corrosion layer is prevented from being damaged by seawater scouring, the service life of the anti-corrosion layer is prolonged, and the service life of the whole mechanical locking device is prolonged.
Description
Technical Field
The invention belongs to the technical field of pile connectors, and particularly relates to a surface flow velocity and flow direction measuring buoy.
Background
The applicant filed an invention patent of a novel internal clamping type mechanical locking device in 11/4/2020, and the novel internal clamping type mechanical locking device utilizes the matching of a top expanding type screw tail taper pin and a triangular pin, enables an opening of the top expanding type screw tail taper pin to sink by means of the self weight of a precast pile, and enables an opposite triangular pin to move upwards to be embedded into the opening at the top to expand and then be firmly clamped in an internal thread of a locking rib sleeve, so that internal clamping type mechanical locking is completed. Whole novel inside callipers formula mechanical locking device has improved the efficiency of construction greatly.
However, when the locking device is used in offshore areas, the biggest problem is seawater corrosion, and since the internal clamping type mechanical locking device is complex in structure and high in manufacturing cost, the service life of the locking device is greatly shortened or the locking device cannot be applied to seawater without adopting an anti-corrosion structure, and unnecessary loss is caused.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects in the prior art, the invention aims to provide the seawater corrosion resistant internal clamping type mechanical locking device, and the service life is prolonged.
The technical scheme is as follows: in order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
an internal clamping type mechanical locking device resistant to seawater corrosion comprises an upper rib locking sleeve, a lower rib locking sleeve, a top expanding type screw tail taper pin and a triangular prism-shaped pin; the upper anchor bar sleeve comprises an upper internal thread section and an upper anchoring section, wherein an interface of the upper anchoring section is used for locking a prestressed bar at the end of the upper precast pile; the lower anchor bar sleeve comprises a lower internal thread section, a cavity part and a lower anchoring section, wherein an interface of the lower anchoring section is used for locking a prestressed bar at the end of the lower precast pile; the top expansion type screw tail taper pin comprises an external thread section and an opening top, wherein the external thread section is in threaded connection with the upper internal thread section of the upper reinforcing bar sleeve; the triangular pin is positioned in an opening at the top of the opening of the top expansion type screw tail taper pin; the top of the opening of the top expanding type screw-tail taper pin and the triangular pin penetrate through the lower internal thread section of the lower lock rib sleeve together and are clamped in the cavity part;
the method is characterized in that: the outer surfaces of the upper tendon-locking sleeve, the lower tendon-locking sleeve, the top-expanded screw-tail conical pin and the triangular pin are coated with an outer anticorrosive layer; and inner anti-corrosion layers are coated on the inner surfaces of the upper inner thread section, the upper anchoring section, the top of the opening, the lower inner thread section, the cavity part and the lower anchoring section.
Further, the outer anticorrosive layer comprises a light iron phosphating outer coating and a modified epoxy ceramic outer coating; wherein the thickness of the light iron phosphating outer coating is 0.005-0.012 mm, and the thickness of the modified epoxy ceramic outer coating is 0.30-0.40 mm.
Further, the inner anti-corrosion layer comprises a light iron phosphating inner coating and a modified epoxy ceramic inner coating, wherein the thickness of the light iron phosphating inner coating is 0.002-0.01 mm, and the thickness of the modified epoxy ceramic inner coating is 0.20-0.30 mm.
Furthermore, the thickness of the light iron phosphating inner coating is 0.008mm, the thickness of the modified epoxy ceramic inner coating is 0.25mm, the thickness of the light iron phosphating outer coating is 0.01mm, and the thickness of the modified epoxy ceramic outer coating is 0.40 mm.
Furthermore, a repairing layer is additionally coated on the outer surface of the outer anti-corrosion layer, and comprises hydrogen-containing silicone oil, lime aluminum salt, polyamide micro powder, hydroxyethyl methacrylate and epoxy resin.
Further, the self-repairing coating is prepared by taking hydrogen-containing silicone oil, lime aluminum salt, polyamide micro powder, hydroxyethyl methacrylate and epoxy resin as raw materials, preparing a self-repairing agent, and uniformly dispersing the self-repairing agent with phosphate ester modified acrylate emulsion, silicone acrylic emulsion, magnesium silicate, pyrrole, phosphate, a film-forming assistant, a leveling agent and deionized water.
Has the advantages that: compared with the prior art, the invention has the following advantages: the anti-corrosion layer is added to the original internal clamping type mechanical locking device, the seawater corrosion can be effectively prevented, in addition, the coating repair layer is additionally arranged on the outer surface of the external anti-corrosion layer, the anti-corrosion layer is prevented from being damaged by seawater scouring, the service life of the anti-corrosion layer is prolonged, and the service life of the whole mechanical locking device is prolonged.
Drawings
FIG. 1 is a schematic view of an assembled internal mechanical locking device;
fig. 2 is a schematic structural view of the upper tendon sleeve 1;
fig. 3 is a schematic structural view of the lower cage bar sleeve 2;
fig. 4 is a schematic structural view of the top-expanding type screw-tail cone pin 3.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific examples, which are carried out on the premise of the technical solution of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1-4, an internal clamping type mechanical locking device resistant to seawater corrosion comprises an upper tendon sleeve 1, a lower tendon sleeve 2, a top expansion type screw-tail cone pin 3 and a triangular prism-shaped pin 4; the upper reinforcing steel bar sleeve 1 comprises an upper internal thread section 11 and an upper anchoring section 12, wherein the interface of the upper anchoring section 12 is used for locking a prestressed reinforcing steel bar at the end of the upper precast pile; the lower tendon-locking sleeve 2 comprises a lower internal thread section 21, a cavity part 22 and a lower anchoring section 23, wherein the interface of the lower anchoring section 23 is used for locking the prestressed tendon at the end of the lower precast pile; the top expansion type screw tail taper pin 3 comprises an external thread section 31 and an opening top 32, wherein the external thread section 31 is in threaded connection with the upper internal thread section 11 of the upper reinforced sleeve 1; the triangular pin 4 is positioned in the opening of the opening top 32 of the top expanding type screw-tail taper pin 3; the open top 32 of the top-expanding type screw-tail cone pin 3 and the triangular pin 4 are clamped in the cavity part 22 together through the lower internal thread section 21 of the lower lock rib sleeve 2.
The outer surfaces of the upper tendon locking sleeve 1, the lower tendon locking sleeve 2, the top expanding type screw-tail cone pin 3 and the triangular-prism-shaped pin 4 are coated with an outer anticorrosive layer; the inner surfaces of the upper internal thread section 11, the upper anchoring section 12, the opening top 32, the lower internal thread section 21, the cavity part 22 and the lower anchoring section 23 are coated with an inner anticorrosive layer. The outer anticorrosive layer comprises a light iron phosphating outer coating and a modified epoxy ceramic outer coating; wherein the thickness of the light iron phosphating outer coating is 0.005-0.012 mm, and the thickness of the modified epoxy ceramic outer coating is 0.30-0.40 mm. The inner anticorrosive layer comprises a light iron phosphating inner coating and a modified epoxy ceramic inner coating, wherein the thickness of the light iron phosphating inner coating is 0.002-0.01 mm, and the thickness of the modified epoxy ceramic inner coating is 0.20-0.30 mm.
Specifically, the thickness of the light iron phosphating inner coating is 0.008mm, the thickness of the modified epoxy ceramic inner coating is 0.25mm, the thickness of the light iron phosphating outer coating is 0.01mm, and the thickness of the modified epoxy ceramic outer coating is 0.40 mm.
The modified epoxy ceramic coating capable of being cured at low temperature has excellent wear resistance, heat resistance and solvent resistance, low chloride ion permeability, seawater corrosion resistance and improved seawater corrosion resistance of the internal clamping type mechanical locking device. The light iron phosphate coating on the inner and outer surfaces can be phosphated at normal temperature, energy can be saved without heating, and the phosphate coating increases the adhesive force between the modified epoxy ceramic coating and the steel material, so that the anti-corrosion effect of the coating is more prominent.
When seawater is washed for a long time, the outer anti-corrosion coating can be gradually corroded, and finally the anti-corrosion is failed. Therefore, a repairing layer is additionally coated on the outer surface of the outer anti-corrosion layer, and comprises hydrogen-containing silicone oil, lime aluminum salt, polyamide micro powder, hydroxyethyl methacrylate and epoxy resin.
The lime aluminum salt method is a method for effectively removing chloride ions by adding lime and aluminum salt to react with chloride ions in water to generate precipitate. The self-repairing agent is obtained by grinding hydrogen-containing silicone oil, lime aluminum salt, polyamide micropowder and hydroxyethyl methacrylate and dispersing uniformly; lime aluminum salt slowly reacts with chloride ions in seawater in a high-salt environment to interact with other components, so that the coating is densified, and the corrosion resistance of the coating is improved. The methyl hydrogen-containing silicone oil is easy to crosslink to form a waterproof film; the hydroxyethyl methacrylate contains polymerizable olefinic bonds and active hydroxyl groups, and is easy to homopolymerize to form a barrier film, so that the corrosion resistance is improved. The epoxy resin plays a role of a substrate and a carrier, and all components are bonded into a whole, so that the repairing layer can be directly coated on the outer surface. .
In addition, the self-repairing coating is prepared by taking hydrogen-containing silicone oil, lime aluminum salt, polyamide micro powder, hydroxyethyl methacrylate and epoxy resin as raw materials to prepare a self-repairing agent, and then uniformly dispersing the self-repairing agent with phosphate ester modified acrylate emulsion, silicone acrylic emulsion, magnesium silicate, pyrrole, phosphate, a film-forming assistant, a leveling agent and deionized water. The self-repairable anticorrosive coating is coated on the outer surface of the outer anticorrosive layer instead of the repair layer, so that the seawater corrosion resistance is improved.
The self-repairing anticorrosive coating is prepared by grinding and uniformly dispersing hydrogen-containing silicone oil, lime aluminum salt, polyamide micropowder and hydroxyethyl methacrylate, and is used for a seawater anticorrosive coating, and the self-repairing coating can slowly react with chloride ions in seawater in a high-salt environment to densify the coating, so that the coating can be self-repaired to form a dense coating in a seawater high-salt environment, and the long-acting self-repairing anticorrosive coating can be realized. The coating with physical and chemical double protection functions is generated, can resist chloride ion corrosion for a long time, and effectively protects metal materials, concrete and the like in seawater.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. An internal clamping type mechanical locking device resistant to seawater corrosion comprises an upper rib locking sleeve (1), a lower rib locking sleeve (2), a top expansion type screw tail taper pin (3) and a triangular prism-shaped pin (4); the upper anchor bar sleeve (1) comprises an upper internal thread section (11) and an upper anchoring section (12), wherein the interface of the upper anchoring section (12) is used for locking a prestressed bar at the end of the upper precast pile; the lower lock rib sleeve (2) comprises a lower internal thread section (21), a cavity section (22) and a lower anchoring section (23), wherein an interface of the lower anchoring section (23) is used for locking a prestressed rib at the end of the lower precast pile; the top expanding type screw tail taper pin (3) comprises an external thread section (31) and an opening top part (32), wherein the external thread section (31) is in threaded connection with an upper internal thread section (11) of the upper reinforcing rib sleeve (1); the triangular pin (4) is positioned in an opening of the opening top (32) of the top expansion type screw-tail conical pin (3); the opening top (32) of the top expanding type screw-tail conical pin (3) and the triangular pin (4) penetrate through the lower internal thread section (21) of the lower lock rib sleeve (2) together and are clamped in the cavity part (22);
the method is characterized in that: the outer surfaces of the upper tendon locking sleeve (1), the lower tendon locking sleeve (2), the top expanding type screw-tail conical pin (3) and the triangular pin (4) are coated with an outer anticorrosive layer; the inner surfaces of the upper internal thread section (11), the upper anchoring section (12), the opening top (32), the lower internal thread section (21), the cavity part (22) and the lower anchoring section (23) are coated with inner anticorrosive layers.
2. The seawater corrosion resistant internally-captured mechanical locking device of claim 1, wherein: the outer anticorrosive layer comprises a light iron phosphating outer coating and a modified epoxy ceramic outer coating; wherein the thickness of the light iron phosphating outer coating is 0.005-0.012 mm, and the thickness of the modified epoxy ceramic outer coating is 0.30-0.40 mm.
3. The seawater corrosion resistant internally-captured mechanical locking device of claim 1, wherein: the inner anti-corrosion layer comprises a light iron phosphating inner coating and a modified epoxy ceramic inner coating, wherein the thickness of the light iron phosphating inner coating is 0.002-0.01 mm, and the thickness of the modified epoxy ceramic inner coating is 0.20-0.30 mm.
4. The seawater corrosion resistant internally-clamped mechanical locking device as defined in claim 2 or 3, wherein: the thickness of the light iron phosphating inner coating is 0.008mm, the thickness of the modified epoxy ceramic inner coating is 0.25mm, the thickness of the light iron phosphating outer coating is 0.01mm, and the thickness of the modified epoxy ceramic outer coating is 0.40 mm.
5. The seawater corrosion resistant internally-captured mechanical locking device of claim 1, wherein: and a repairing layer is additionally coated on the outer surface of the outer anticorrosive layer, and comprises hydrogen-containing silicone oil, lime aluminum salt, polyamide micro powder, hydroxyethyl methacrylate and epoxy resin.
6. The seawater corrosion resistant internally-captured mechanical locking device of claim 1, wherein: the self-repairing anticorrosive coating is prepared by taking hydrogen-containing silicone oil, lime aluminum salt, polyamide micropowder, hydroxyethyl methacrylate and epoxy resin as raw materials to prepare a self-repairing agent, and then uniformly dispersing the self-repairing agent with phosphate ester modified acrylate emulsion, silicone acrylic emulsion, magnesium silicate, pyrrole, phosphate, a film-forming assistant, a flatting agent and deionized water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011573892.6A CN114687344A (en) | 2020-12-25 | 2020-12-25 | Seawater corrosion resistant internal clamping type mechanical locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011573892.6A CN114687344A (en) | 2020-12-25 | 2020-12-25 | Seawater corrosion resistant internal clamping type mechanical locking device |
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| Publication Number | Publication Date |
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| CN114687344A true CN114687344A (en) | 2022-07-01 |
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| CN202011573892.6A Pending CN114687344A (en) | 2020-12-25 | 2020-12-25 | Seawater corrosion resistant internal clamping type mechanical locking device |
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