CN115260999A - Cooling liquid for wind generating set and preparation method thereof - Google Patents
Cooling liquid for wind generating set and preparation method thereof Download PDFInfo
- Publication number
- CN115260999A CN115260999A CN202211030452.5A CN202211030452A CN115260999A CN 115260999 A CN115260999 A CN 115260999A CN 202211030452 A CN202211030452 A CN 202211030452A CN 115260999 A CN115260999 A CN 115260999A
- Authority
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- China
- Prior art keywords
- generating set
- cooling liquid
- wind generating
- cooling system
- water cooling
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- 239000000110 cooling liquid Substances 0.000 title claims abstract description 80
- 238000002360 preparation method Methods 0.000 title claims description 22
- -1 azole organic compound Chemical class 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000001816 cooling Methods 0.000 claims abstract description 39
- KAESVJOAVNADME-UHFFFAOYSA-N 1H-pyrrole Natural products C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims abstract description 23
- 150000001412 amines Chemical class 0.000 claims abstract description 20
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 18
- 229920000570 polyether Polymers 0.000 claims abstract description 18
- 239000003381 stabilizer Substances 0.000 claims abstract description 15
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 239000010703 silicon Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 20
- 229920001296 polysiloxane Polymers 0.000 claims description 20
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 19
- 239000002826 coolant Substances 0.000 claims description 13
- 239000008367 deionised water Substances 0.000 claims description 13
- 229910021641 deionized water Inorganic materials 0.000 claims description 13
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 11
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 9
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 230000002528 anti-freeze Effects 0.000 claims description 6
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 claims description 4
- 150000001565 benzotriazoles Chemical class 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 3
- 239000012964 benzotriazole Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 3
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 claims description 3
- NNRAOBUKHNZQFX-UHFFFAOYSA-N 2H-benzotriazole-4-thiol Chemical compound SC1=CC=CC2=C1NN=N2 NNRAOBUKHNZQFX-UHFFFAOYSA-N 0.000 claims description 2
- IPIVUPVIFPKFTG-UHFFFAOYSA-N 4-butyl-2h-benzotriazole Chemical compound CCCCC1=CC=CC2=C1N=NN2 IPIVUPVIFPKFTG-UHFFFAOYSA-N 0.000 claims description 2
- 125000000041 C6-C10 aryl group Chemical group 0.000 claims description 2
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 235000010290 biphenyl Nutrition 0.000 claims description 2
- 239000004305 biphenyl Substances 0.000 claims description 2
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 2
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 claims description 2
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 claims description 2
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 125000001624 naphthyl group Chemical group 0.000 claims description 2
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 claims description 2
- 238000006467 substitution reaction Methods 0.000 claims description 2
- 150000005846 sugar alcohols Polymers 0.000 claims description 2
- 125000003884 phenylalkyl group Chemical group 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 40
- 230000007797 corrosion Effects 0.000 abstract description 37
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 14
- 239000007769 metal material Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005536 corrosion prevention Methods 0.000 abstract description 8
- 239000007864 aqueous solution Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 description 24
- 239000002184 metal Substances 0.000 description 24
- 238000012360 testing method Methods 0.000 description 22
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 15
- 238000000034 method Methods 0.000 description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 12
- 229910052802 copper Inorganic materials 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 239000000243 solution Substances 0.000 description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 8
- 150000002739 metals Chemical class 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 6
- 239000003112 inhibitor Substances 0.000 description 6
- 229910000975 Carbon steel Inorganic materials 0.000 description 5
- 239000010962 carbon steel Substances 0.000 description 5
- 239000000306 component Substances 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000008213 purified water Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229920013822 aminosilicone Polymers 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 229910017053 inorganic salt Inorganic materials 0.000 description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 239000010963 304 stainless steel Substances 0.000 description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910021642 ultra pure water Inorganic materials 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000013494 PH determination Methods 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical group OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229930013930 alkaloid Natural products 0.000 description 1
- 150000003797 alkaloid derivatives Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000013556 antirust agent Substances 0.000 description 1
- 150000003851 azoles Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 125000001072 heteroaryl group Chemical group 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229960004063 propylene glycol Drugs 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
- 235000010234 sodium benzoate Nutrition 0.000 description 1
- 239000004299 sodium benzoate Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/20—Antifreeze additives therefor, e.g. for radiator liquids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2618—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen
- C08G65/2621—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen containing amine groups
- C08G65/2624—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen containing amine groups containing aliphatic amine groups
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to a cooling liquid for a water cooling system of a wind generating set, which comprises the following components in percentage by mass: 0.20-2.00% of polyether amine, 0.01-0.05% of azole organic compound, 0.01-0.20% of organic silicon, 0.01-0.10% of stabilizer, 30-60% of antifreezing agent and the balance of water. The selected components are basically not ionized or slowly dissociated in the aqueous solution, so that the cooling liquid has lower conductivity, and the conductivity can be less than 150 mu s/cm. The cooling liquid provided by the invention also solves the corrosion prevention problems of pitting corrosion, crevice corrosion and the like of various aluminum alloys such as 3003, 4043, 4104, 5052, 6061 and the like which are special metal materials of a wind generating set system, and can realize the long-acting corrosion prevention protection effect on the wind generating set.
Description
Technical Field
The invention relates to the technical field of cooling liquid, and particularly provides cooling liquid for a wind generating set and a preparation method of the cooling liquid.
Background
The antifreezing property is the common property of the cooling liquid, but the technical requirements on the cooling liquid are correspondingly different when the specific operating system environment is different. A wind power converter belongs to one of large core components of a wind generating set. During the operation of the fan, a converter in the wind generating set generates a large amount of heat. The special cooling liquid for wind power is a heat exchange medium which works in all weather in a wind power generation operation system, has low conductivity, high heat transfer efficiency, no freezing at low temperature, good fluidity, small evaporation at high temperature, anti-scaling, long-acting anti-corrosion usability and the like, and is suitable for the working environment of fan operation.
As no corresponding national standard makes corresponding technical requirement provisions on the cooling liquid of the wind generating set at present, people generally use GB29743 Motor vehicle Engine Cooling liquid as the quality evaluation standard of the cooling liquid of the wind generating set. Patent CN102250592A discloses a long-acting environment-friendly anti-freezing cooling medium for wind power equipment, and patent CN109762642A discloses a low-conductivity cooling liquid and a preparation method thereof, wherein the metal corrosion resistance of the cooling liquid is tested by referring to SH/T0085 (method for measuring corrosion of engine cooling liquid by glassware method), and the test materials are traditional metals such as red copper, brass, solder, carbon steel, cast iron, cast aluminum and the like.
Various metal materials related to the water cooling system of the wind generating set are mainly made of various aluminum alloys of different types. Various materials are involved in the closed circulating system, and the heat exchanger partition plate circulating in the converter is made of AI4043 materials; the fins and the heat exchanger end socket are made of AI3003 and 5052 materials; the module radiator is made of AI6061 material; the solder is 4004 aluminum-silicon alloy solder, ER5354 welding rod, and 4104 vacuum brazing solder. A heater, a filter, a pressure gauge and a pipeline of the converter external circulation are made of 304 stainless steel materials; the expansion tank is made of carbon steel. The materials of various valves are mainly copper materials. GB29743 "Motor vehicle Engine Coolant" selects conventional metals such as: six materials such as red copper, brass, solder, cast iron, carbon steel, cast aluminum, and the like, and the evaluation of the corrosion prevention effect of different types of aluminum alloys such as 3003, 4043, 4104, 5052, and 6061 is not referred to in the standards as test materials used for the evaluation of the corrosion prevention of metals. The method is currently applied to the cooling liquid of the wind generating set, and the selection of conventional metals for the metal material in the evaluation of the corrosion resistance of the metal is tested as follows: the method has the advantages that six materials such as red copper, brass, welding flux, cast iron, carbon steel and cast aluminum deviate from the actual metal material of the circulating system of the wind generating set, and the problem that the actual operation condition of the cooling liquid cannot be correctly guided by an evaluation result exists.
The operating environment of the cooling liquid of the wind generating set is a high-voltage electrified system, and the cooling liquid operating in the circulating system must have low conductivity from the aspects of stability and safety of the circuit operating system. As the cooling liquid of the motor vehicle engine does not have technical requirements on the electrical conductivity, and most of additives selected for the cooling liquid are easily ionized substances, the electrical conductivity of the cooling liquid is over-high at about 3000 mu s/cm, so that the cooling liquid of the motor vehicle engine is not suitable for a cooling operation system of a wind turbine generator.
In addition, although the working principle of the motor vehicle engine coolant and the working principle of the wind generating set coolant are similar, the respective operating environments are obviously different, and the technical performance requirements of the used coolant are correspondingly different. The practical operation condition of a cooling circulation system of a wind generating set is deeply researched, the particularity of the cooling liquid of the wind generating set is obtained through analysis, the applicant publishes a T/CEC 222-2019 'technical specification of the cooling liquid of the water cooling system of the wind generating set' in 2019, the standard has the most prominent difference compared with GB29743 'cooling liquid of a motor vehicle engine', the difference is obvious in a glassware corrosion test evaluation method, and the T/CEC 222 is closer to the metal material of the cooling circulation system of the wind generating set in the selection of the metal material in the evaluation of the corrosion resistance. Secondly, the electrical conductivity of the cooling liquid is also correspondingly required.
3 main technical problems need to be solved when the cooling liquid is applied to the wind generating set: firstly, in order to ensure the stability and the safety of a circuit operation system of the wind turbine generator system, the cooling liquid has low conductivity; secondly, the corrosion prevention problem of various metal materials of the cooling circulation system is solved; thirdly, in order to prolong the replacement period of the cooling liquid, the cooling liquid should have long-term service performance.
As the inorganic salt metal corrosion inhibitor is added into the traditional cooling liquid, the inorganic salt metal corrosion inhibitor is hydrolyzed and ionized in the water solution to generate a large amount of anions and cations, so that the conductivity of the solution is increased. The inorganic salt corrosion inhibitor cannot be used in the cooling liquid of the wind generating set. The organic corrosion inhibitor applied to the cooling liquid is mainly organic compounds containing N, O, S, P, such as organic acids, nitrogen-containing compounds, azoles and the like. Organic acid compounds are poor in solubility and generally need to be converted into organic acid salts for use in cooling liquids, and the organic acid salts exist in ionic states in the solutions, so that the conductivity of the solutions is increased, and the solutions are not suitable for use in low-conductivity cooling liquids. The organic corrosion inhibitor containing S, P element forms a protective film after the reaction on the metal surface, improves the corrosion-resistant and rust-proof effects, but also generates toxic substances, causes environmental pollution and harm to human body. In particular, in view of the problems of emission and degradation, the environmental regulations of the present day impose increasingly strict restrictions on S, P and the like in the additives.
In the prior development of low-conductivity cooling liquid, organic compounds such as nitrogen, organosilicon, azole and the like are selected and used more. The nitrogen-containing compounds such as organic amine, alkaloid and the like contain N, can provide lone electron pairs, and easily form an ion complex with copper ions, so that the corrosion of metal copper and alloy is accelerated. The problem of corrosion of nitrogen-containing compounds to metallic copper is generally solved by increasing the addition amount of azole-based organic materials. Patent CN 102174313A discloses a low-conductivity, super-long-acting, organic alkali type antifreeze coolant and patent CN102250592A discloses a long-acting environment-friendly antifreeze cooling medium for wind power equipment, and azole organic matters are added in too large amount, so that the cost is too high, the economy is not high, and the usability is poor. CN109837071A discloses a cooling liquid for a wind generating set, which uses the compound of aliphatic monocarboxylic acid, alkoxylated alkynol and imidazoline as a corrosion inhibitor; the aliphatic monocarboxylic acid is adsorbed on the surface of the metal, so that the energy of the surface of the metal tends to be stable, and the corrosion of the metal is inhibited. Azole compounds form a dense film on the surface of copper to inhibit corrosion of copper, the conductivity is greatly reduced compared with that of the conventional cooling liquid, but the organic carboxylic acid still forms salt and can cause the conductivity to be increased after long-term use; in addition, the organic carboxylic acids have poor solubility and tend to precipitate during use and storage, resulting in a decrease in cooling effect. CN109762642A discloses a low-point conduction cooling liquid, which comprises 30-80 dihydric alcohol, 0.01-2.0% of nitrogen-containing compound, 0-1.0% of azole compound and the balance of deionized water. However, in the first place, this patent is directed to inhibiting corrosion of metals by forming a protective layer on the surface of the metal by means of a polysilicol compound produced by hydrolysis of silicone at high temperatures. In order to stabilize the organosilicon, a nitrogen-containing compound is added as a stabilizer to inhibit the hydrolysis of the organosilicon at low temperature. However, if the hydrolysis of the organosilicon is incomplete, the problem of unstable precipitation of silica gel from the organosilicon arises. It is also stated that a low conductivity of the cooling liquid is achieved, which in the preferred embodiment is in the vicinity of 0.09-2 mus/cm, and in the lowest embodiment 4 is only 0.09 mus/cm, but as is known in the art, the conductivity of the cooling liquid cannot be as low. Because the lowest conductivity of the ultrapure water is 0.055 mu s/cm (which is the theoretical lowest value that the ultrapure water can reach), the deionized water used in the industry is divided into a first-stage deionized water and a second-stage deionized water, the conductivity of the deionized water obtained by the cation-anion exchange resin is 5-10 mu s/cm, and the deionized water can reach 0.5-2 mu s/cm after continuously passing through the mixed bed treatment and is the first-stage deionized water. Secondary deionized water is also generally used industrially because of the extremely high cost of conductivity in the range of 0.5 to 2. Mu.s/cm.
The applicant's previous patent CN112111252a discloses a cooling liquid for a water cooling system of a wind generating set, which comprises 1-3% of amine organic compounds and 0.15-0.3% of azole organic compounds. The components thereof are not ionized in aqueous solution and have lower conductivity. Under the combined action of the amine organic compound and the azole organic compound, the problem of corrosion to aluminum alloy in a wind power generation water cooling system is solved, but the effect is still to be improved.
Disclosure of Invention
In order to achieve the above object, the present invention provides the following technical solutions:
the cooling liquid for the water cooling system of the wind generating set comprises the following components in percentage by mass: 0.20-2.00% of polyetheramine, 0.01-0.05% of azole organic compound, 0.01-0.20% of organic silicon, 0.01-0.10% of stabilizer, 30-60% of antifreezing agent and the balance of deionized water; the structure of the polyether amine is shown as the following formula (I) or formula (II):
r is optionally substituted C6-10 aryl, C4-10 alkyl or C4-10 heteroaryl; n =0-20, m =0-20, and n + m is in the range of 2-20. C6-10 represents a carbon number of 6-10, and C4-10 represents a carbon number of 4-10.
Further, the polyether amine is obtained by a preparation method comprising the following steps: reacting R-NH 2 Adding into a reaction kettle, stirring and heating to 100-150 ℃ under inert atmosphere, adding ethylene oxide (or propylene oxide) in sequence, slowly adding propylene oxide (or ethylene oxide) after the reaction is finished, continuing to react for 1-3h, cooling and discharging to obtain the product.
Firstly adding ethylene oxide, and then adding propylene oxide to obtain a compound shown in the formula (I); propylene oxide is added first, followed by ethylene oxide to give the compound of formula (II).
Preferably, the cooling liquid for the water cooling system of the wind generating set comprises the following components in percentage by mass: 0.50-1.50% of polyetheramine, 0.01-0.02% of azole organic compound, 0.05-0.10% of organic silicon, 0.03-0.05% of stabilizer, 40-50% of antifreezing agent and the balance of water
Preferably, n =0-8, m =0-8, and n + m is in the range of 2-10.
More preferably, said aryl group is selected from phenyl, biphenyl, naphthyl; the alkyl group is a cycloalkyl, branched alkyl, or straight chain alkyl group such as cyclobutyl, cyclopentyl, cyclohexyl, pentyl, hexyl, octyl, nonyl, decyl, phenyl, or the like. The optional substitution means that H is optionally substituted by hydroxyl or alkoxy.
Preferably, the organosilicon is polydimethylsiloxane, at least one of amino-terminated polysiloxane and side chain amino polysiloxane, and the molecular weight of the organosilicon is 1000-5000. Further preferably, the polydimethylsiloxane, the terminal amino polysiloxane has a molecular weight of 3000-5000, the side chain amino polysiloxane has a molecular weight of 1000-2000, and the side chain amino polysiloxane has an ammonia value of 0.5-0.8mmol/g.
Still further, the amino-terminated polysiloxane is at least one selected from the group consisting of α, ω -diaminopolydimethylsiloxane, α, ω -diaminoethyl polydimethylsiloxane, α, ω -diaminopropyl polydimethylsiloxane, α, ω -diaminobutyl polydimethylsiloxane, α, ω -diaminopolymethylphenylsiloxane, α, ω -diaminopropylpolymethylphenylsiloxane, α, ω -diaminoethyl polymethylphenylsiloxane.
Preferably, the azole organic compound includes at least one of benzotriazole, methylbenzotriazole, N-ethoxylated benzotriazole, butyl benzotriazole, mercaptobenzotriazole, benzothiazole and mercaptobenzothiazole.
The antifreeze is not particularly limited, and is a conventional antifreeze in the art, such as polyhydric alcohols (ethylene glycol, diethylene glycol, 1,2 propylene glycol, 1,3 propylene glycol, 1,4-butanediol).
Preferably, the stabilizer is silicone oil Q6083.
The invention also provides a preparation method of the long-acting water cooling system cooling liquid for the wind generating set, which comprises the following steps: and adding the anti-freezing agent and the deionized water, adding the polyether amine, the azole organic compound, the organic silicon and the stabilizer, and uniformly mixing to obtain a uniform and stable solution.
Compared with the prior art, the invention has the following beneficial effects:
1. aiming at the particularity of the working environment of the circulating system of the wind generating set, on the premise of meeting the low conductivity at first, the invention develops the special cooling liquid for the water cooling system of the wind generating set from the perspective of a cooling liquid core additive, and selected components basically do not generate ionization or slow dissociation in an aqueous solution, so that the cooling liquid has lower conductivity and can realize the conductivity of less than 150 mu s/cm.
2. Aiming at the problem that the existing low-conductivity cooling liquid is not directed at the corrosion resistance of the actual metal material of the cooling system of the wind generating set, particularly various aluminum alloys, the invention selects the polyether amine with a specific structure, and the molecular structure of the polyether amine is different from that of the conventional organic amine compound. Because ethylene oxide and propylene oxide in the molecule provide O atoms, O has an electron-withdrawing effect, so that the electron cloud of N in organic amine is deviated, the electron supply capacity of N is weakened, and the electronegativity of N is weakened. As a result of this electron cloud drift, firstly, the chance of the polyetheramine forming an ion complex with copper can be reduced, thereby reducing the corrosiveness of the polyetheramine with respect to metallic copper and further reducing the amount of azole organic compounds added to the coolant. Secondly, the alkalinity of the polyether amine compound can be reduced, and the corrosion protection of various aluminum alloys under the weak alkaline condition is facilitated. Due to the special spatial structure and active center groups of the polyether amine, the polyether amine has high adsorption speed and high adsorption bond energy, shows high adsorption efficiency and strong adsorption stability, and achieves the level of long-acting metal corrosion protection. Under the synergistic action of the preferable polyether amine, the azole organic compound and the organic silicon, the corrosion prevention problem of various metals is solved, particularly the corrosion prevention problems of pitting corrosion, crevice corrosion and the like of various aluminum alloys such as 3003, 4043, 4104, 5052, 6061 and the like which are special metal materials of a wind generating set system are solved, and the long-acting corrosion prevention protection effect on the wind generating set can be realized. According to the standard of T/CEC 222-2019 'technical Specification of Cooling liquid of Water Cooling System of wind generating set', metal test materials such as copper, 304 stainless steel, carbon steel, aluminum alloy 3003, 4043, 4104, 5052 and 6061 are selected to test the metal corrosion resistance of the cooling liquid.
3. The invention selects specific organic silicon, namely conventional dimethyl silicone oil, terminal group amino silicone oil and side chain amino silicone oil are compounded according to a certain proportion, thereby not only playing a defoaming role, but also achieving the effect of inhibiting the corrosion of the aluminum alloy.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying tables and the detailed description thereof.
The polydimethylsiloxane was purchased from Jiangxi Langxi Sihuo Silicone Co., ltd, and had a number average molecular weight of 5000 and a viscosity of 1200 mPas.
The alpha, omega-diaminopolydimethylsiloxane was purchased from Jiangxi Langxiang Silicones, inc., number average molecular weight 3000, viscosity 1300 mPas.
The side chain amino polysiloxane is purchased from Jiangxi Langxi Sichuan organosilicon Co., ltd, and has a number average molecular weight of 1500 and an ammonia value of 0.5mmol/g.
The conductivity of the deionized water used in the embodiment of the invention is less than 4.6 mu s/cm.
Preparation example 1
Adding 1 mol portion of cyclohexylamine into a stainless steel reaction kettle, replacing the cyclohexylamine with nitrogen for several times, stirring and heating to 120 ℃, slowly adding 3 mol portions of ethylene oxide within 1 hour under 2 atmospheric pressure, after the addition of the ethylene oxide is finished, slowly adding 3 mol portions of propylene oxide within 1 hour, continuously stirring for 2 hours after the addition of the propylene oxide is finished, cooling and discharging after the reaction is finished, and obtaining the cyclohexylamine polyethoxy polypropoxy ether shown in the formula (I), wherein R is cyclohexyl, n is 3,m is about 3, and the number average molecular weight is 381 (405) g/mol through testing.
Preparation example 2
The other conditions and operation were the same as in preparation example 1 except that ethylene oxide was used in an amount of 4 parts by mole and propylene oxide was used in an amount of 2 parts by mole. The obtained cyclohexylamine polyethoxypolypropylene ether represented by the formula (I) wherein R is cyclohexyl and n is about 4,m is about 2.
Preparation example 3
The other conditions and operation were the same as in preparation example 1 except that ethylene oxide was used in an amount of 5 parts by mole and propylene oxide was used in an amount of 3 parts by mole. The obtained cyclohexylamine polyethoxypolypropylene ether represented by the formula (I) wherein R is cyclohexyl and n is about 5,m is about 3.
Preparation example 4
The other conditions and operations were the same as in preparation example 1 except that cyclohexylamine was replaced with an equimolar amount of n-butylamine to finally obtain a n-butylamine polyethoxypolyloxy ether represented by formula (I) wherein R is n-butyl and n is about 3,m of about 3.
Example 1
The cooling liquid for the wind generating set is prepared from the following raw materials in percentage by mass: the polyether amine prepared in preparation example 1 is 1.00%, benzotriazole 0.01%, polydimethylsiloxane 0.07%, stabilizer Q6083 0.04%, ethylene glycol 43%, and the balance of purified water. The cooling liquid for the wind generating set is prepared according to the following method: adding an antifreezing agent and water, adding polyetheramine, an azole organic compound, organic silicon and a stabilizer, stirring for 0.5h at 40 +/-2 ℃, and filtering to obtain a uniform and stable solution, namely the cooling liquid of the wind generating set.
Example 2
The other conditions and operation are the same as those of the embodiment 1, except that the cooling liquid of the wind generating set of the embodiment 2 is prepared from the following raw materials in percentage by mass: 0.50% of polyether amine prepared in preparation example 2, 0.01% of methyl benzotriazole, 0.05% of polydimethylsiloxane, 0.04% of stabilizer Q6083, 40% of ethylene glycol and the balance of purified water.
Example 3
The other conditions and operations are the same as those of the embodiment 1, except that the cooling liquid of the wind generating set of the embodiment 3 is prepared from the following raw materials in percentage by mass: 1.50% of polyetheramine prepared in preparation example 3, 0.01% of N-ethoxylated benzotriazole, 0.10% of polydimethylsiloxane, 0.04% of stabilizer Q6083, 49% of ethylene glycol and the balance of purified water.
Example 4
The other conditions and operation are the same as those of the embodiment 1, except that the cooling liquid of the wind generating set of the embodiment 4 is prepared from the following raw materials in percentage by mass: 1.00% of polyetheramine prepared in preparation example 4, 0.01% of N-ethoxylated benzotriazole, 0.10% of polydimethylsiloxane, 0.04% of stabilizer Q6083, 49% of ethylene glycol and the balance of purified water.
Example 5
The other conditions and operations are the same as in example 1, except that 0.07% of the polydimethylsiloxane is replaced by a mixed silicone of 0.05% of polydimethylsiloxane and 0.02% of α, ω -diaminopolydimethylsiloxane.
Example 6
The other conditions and operations were the same as in example 1 except that 0.07% of the polydimethylsiloxane was replaced by a mixed silicone of 0.06% of the polydimethylsiloxane and 0.01% of the side chain aminopolysiloxane.
Comparative example 1
The other conditions and operation were the same as in example 3 except that the polyether amine obtained in preparation example 3 was replaced with organic amine EDTA in an amount of 1.50% by weight based on the cooling liquid,
comparative example 2
The other conditions and operations were the same as in example 3, except that the polyetheramine obtained in preparation example 3 was replaced by sodium benzoate in an amount of 1.50% by weight based on the cooling liquid.
Comparative example 3
The other conditions and operation were the same as in example 1 except that the polyether amine obtained in preparation example 3 was replaced with triethanolamine in an amount of 1.50% by weight based on the cooling liquid.
Application example
The cooling liquids obtained in the above examples and comparative examples were tested according to the following test methods, and the results are shown in table 1 below:
the metal corrosion resistance test method comprises the following steps: the test is carried out according to T/CEC 222-2019 technical Specification for cooling liquid of a water cooling system of a wind generating set by a specified method, wherein the test temperature is 70 +/-2 ℃, and the test time is 672 +/-2 h.
The pH value measuring method comprises the following steps: refer to SH/T0069 determination of pH value of antifreeze, antirust and cooling liquid for engine.
The reserve alkalinity determination method comprises the following steps: refer to SH/T0091 determination of reserve alkalinity of engine coolant and antirust agent.
Conductivity test method: reference is made to GB/T6908 "determination of conductivity in methods for analyzing boiler water and cooling water".
Table 1 performance testing of coolants
As can be seen from the test results in Table 1, the cooling liquid for the water cooling system of the wind generating set prepared by the invention has low conductivity which is lower than 150 mus/cm because the adopted components are all non-ionized chemical substances, and can fully meet the requirements of the cooling liquid for the water cooling system of the wind generating set. The cooling liquid of the invention has excellent anti-corrosion protection effect on various metals and different types of aluminum alloys such as specific metal materials 3003, 4043, 4104, 5052 and 6061 of a water cooling system of a wind generating set. The test results of examples 1-3 show that the azole compound is not added in the same amount with the increase of the addition amount of the polyether amine, so that the corrosion to copper is not increased, and the corrosion to various aluminum alloys is further inhibited. As can be seen from the comparison between example 1 and example 4, the use of the polyetheramine of formula (I) wherein R is cyclohexyl is more advantageous in suppressing corrosion of aluminum alloys than the polyetheramine of formula (I) wherein R is a C4-10 alkyl group. It can be seen from the comparison between example 1 and example 5,6 that the silicone is a mixture of conventional methyl silicone oil and amino silicone oil, which can further inhibit corrosion of the aluminum alloy, and although the conductivity is slightly improved, the silicone still belongs to the category of low conductivity. In addition, the pH value of the solution before and after the test of the embodiment 1-6 is not larger than 0.2, the variation of the reserve alkalinity before and after the test is not higher than 3%, and the test data show that the special cooling liquid for the wind generating set has excellent long-acting service performance.
Application example 2
Method 2 for testing corrosion resistance of metal: the test is carried out according to the method specified in SH/T0085 method for measuring the corrosion of the engine coolant, the test temperature is 88 +/-2 ℃, and the test time is 336 +/-2 hours. The test results are shown in table 2 below:
TABLE 2
From the test results in the tables 1 and 2, the cooling liquid for the wind generating set provided by the invention has the precondition of ensuring low conductivity, and the metal corrosion resistance test shows excellent multi-metal corrosion resistance no matter referring to a method specified by T/CEC 222-2019 Cooling liquid technical Specification for Cooling liquid of a Water Cooling System of a wind generating set or referring to a method specified by SH/T0085-1991 measuring method for measuring corrosion of Engine Cooling liquid. And the coating also shows excellent anti-corrosion protection effect on different types of aluminum alloys such as unique metal materials 3003, 4043, 4104, 5052 and 6061 of the water cooling system of the wind generating set.
Claims (10)
1. The cooling liquid for the water cooling system of the wind generating set is characterized by comprising the following components in percentage by mass: 0.20-2.00% of polyetheramine, 0.01-0.05% of azole organic compound, 0.01-0.20% of organic silicon, 0.01-0.10% of stabilizer, 30-60% of antifreezing agent and the balance of deionized water; the structure of the polyether amine is shown as the following formula (I) or formula (II):
r is optionally substituted C6-10 aryl or C4-10 alkyl; n =0-20, m =0-20, and n + m is in the range of 2-20. C6-10 represents a carbon number of 6-10, and C4-10 represents a carbon number of 4-10.
2. The cooling liquid for the water cooling system of the wind generating set according to claim 1, wherein the polyether amine is obtained by a preparation method comprising the following steps: reacting R-NH 2 Adding into a reaction kettle, stirring and heating to 100-150 ℃ under inert atmosphere, adding ethylene oxide (or propylene oxide) in sequence, slowly adding propylene oxide (or ethylene oxide) after the reaction is finished, continuing to react for 1-3h, cooling and discharging to obtain the product.
3. The cooling liquid for the water cooling system of the wind generating set according to claim 1, wherein the cooling liquid for the water cooling system of the wind generating set comprises the following components in percentage by mass: 0.50-1.50% of polyetheramine, 0.01-0.02% of azole organic compound, 0.05-0.10% of organic silicon, 0.03-0.05% of stabilizer, 40-50% of antifreezing agent and the balance of water.
4. The wind turbine generator system water cooling system coolant of claim 1, wherein n =0-8, m =0-8, and n + m is in the range of 2-10.
5. The water cooling system coolant liquid for the wind generating set according to claim 1, wherein the aryl group is selected from phenyl, biphenyl, naphthyl; the alkyl group is a cycloalkyl group, a branched alkyl group or a straight-chain alkyl group such as cyclobutyl, cyclopentyl, cyclohexyl, pentyl, hexyl, octyl, nonyl, decyl, phenylalkyl, etc.; the optional substitution means that H is optionally substituted by hydroxyl or alkoxy.
6. The cooling liquid for the water cooling system of the wind generating set according to claim 1, wherein the organosilicon is at least one of polydimethylsiloxane, amino-terminated polysiloxane and side chain amino-polysiloxane, and the molecular weight of the organosilicon is 1000-5000.
7. The cooling liquid for the water cooling system of the wind generating set according to claim 6, wherein the polydimethylsiloxane, the terminal amino polysiloxane has a molecular weight of 3000-5000, the side chain amino polysiloxane has a molecular weight of 1000-2000, and the side chain amino polysiloxane has an ammonia value of 0.5-0.8mmol/g.
8. The cooling liquid for the water cooling system of the wind generating set according to claim 6, wherein the amino-terminated polysiloxane is at least one selected from the group consisting of alpha, omega-diaminopolydimethylsiloxane, alpha, omega-diaminoethyl polydimethylsiloxane, alpha, omega-diaminopropyl polydimethylsiloxane, alpha, omega-diaminobutyl polydimethylsiloxane, alpha, omega-diaminopolymethylphenylsiloxane, alpha, omega-diaminopropyl polymethylphenylsiloxane and alpha, omega-diaminoethyl polymethylphenylsiloxane.
9. The cooling liquid for the water cooling system of the wind generating set according to claim 1, wherein the azole organic compound comprises at least one of benzotriazole, methylbenzotriazole, N-ethoxylated benzotriazole, butyl benzotriazole, mercaptobenzotriazole, benzothiazole and mercaptobenzothiazole; the antifreezing agent is polyhydric alcohol; the stabilizer is organosilicon Q6083.
10. The preparation method of the cooling liquid for the water cooling system of the wind generating set according to any one of claims 1 to 9, characterized by comprising the following steps: after the antifreeze and the deionized water are fed, adding the polyether amine, the azole organic compound, the organic silicon and the stabilizer, and uniformly mixing to obtain a uniform and stable solution.
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