CN116590074B - Anti-micro pitting wind driven generator gear oil and preparation method thereof - Google Patents

Anti-micro pitting wind driven generator gear oil and preparation method thereof Download PDF

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CN116590074B
CN116590074B CN202310353685.7A CN202310353685A CN116590074B CN 116590074 B CN116590074 B CN 116590074B CN 202310353685 A CN202310353685 A CN 202310353685A CN 116590074 B CN116590074 B CN 116590074B
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olefin
oil
gear oil
alpha
micro
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CN116590074A (en
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王强
史雪权
朱大德
白凌
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Three Gorges New Energy Offshore Wind Power Operation And Maintenance Jiangsu Co ltd
Anhui Jinde Lubrication Technology Co ltd
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Three Gorges New Energy Offshore Wind Power Operation And Maintenance Jiangsu Co ltd
Anhui Jinde Lubrication Technology Co ltd
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Abstract

The invention discloses a micro-pitting corrosion resistant gear oil for a wind driven generator and a preparation method thereof, and relates to the technical field of gear oil.

Description

Anti-micro pitting wind driven generator gear oil and preparation method thereof
Technical field:
The invention relates to the technical field of gear oil, in particular to anti-micro pitting wind driven generator gear oil and a preparation method thereof.
The background technology is as follows:
with the continuous development and maturity of technology, wind power generation has become a hotspot in the world new energy industry. In the working process of the fan, the bearing is often influenced by various running conditions such as high rotation speed, low rotation speed, high load and low load interconversion and the like, and the contact pressure and friction force of the gear and the bearing can be changed. With the increase of the output power of the unit, the contact pressure of the gear and the bearing is increased when the running condition is changed, the friction is increased, and the running temperature is increased. At the same time, harsh environmental conditions can also create a challenging lubrication environment.
The gear oil of the wind driven generator is generally composed of poly alpha-olefin base oil and high-performance composite additives, can be used under extreme environment temperature and severe working conditions, can effectively prevent micro pitting corrosion of gears in operation, has extreme pressure resistance and heavy load industrial gear oil resistance, forms an extremely strong oil film on tooth surfaces, and prolongs the service life of the gears.
The phenomenon of micro pitting exists in the gear of the wind driven generator generally, so that the tooth surface generates micro cracks and pits, noise and vibration are caused, the meshing precision of the gear is influenced, and even tooth breakage is caused, thereby influencing the service life of the gear of the wind driven generator. Therefore, the improvement of the micro pitting corrosion resistance of the gear oil is of great importance.
The invention comprises the following steps:
The technical problem to be solved by the invention is to provide the gear oil for the wind driven generator and the preparation method thereof, wherein the gear oil can form a dense lubricating oil film with a certain thickness on the surface of the gear, reduce contact between metals and between air and metals, effectively inhibit formation of micro pitting corrosion, and simultaneously has excellent service performances such as temperature sticking, wear resistance, bubbling resistance, low-temperature fluidity, thermal oxidation stability and the like, and prolongs the service life of the gear of the wind driven generator.
The technical problems to be solved by the invention are realized by adopting the following technical scheme:
The invention aims to provide micro-pitting corrosion resistant gear oil for a wind driven generator, which comprises the following raw materials in parts by weight:
The poly-a olefin is a common synthetic base oil, which is prepared by firstly preparing alpha olefin from olefin through polymerization reaction, and then further preparing the alpha olefin through polymerization and hydrogenation reaction. The poly alpha olefin synthetic oil (PAO for short) has good viscosity-temperature performance and low-temperature fluidity, and is ideal base oil for preparing high-grade special lubricating oil.
The preparation method of the high-viscosity poly-alpha-olefin base oil comprises the following steps: the C8-C10 alpha-olefin and vinyl triethoxysilane are subjected to oligomerization reaction to obtain an olefin oligomer, and then the olefin oligomer is subjected to hydrogenation reaction to obtain the high-viscosity poly alpha-olefin base oil. While linear alpha-olefins are commonly used in the art as feedstock to prepare polyalphaolefin base oils, the present invention is directed to the preparation of polyalphaolefin base oils using linear alpha-olefins and branched alpha-olefins containing siloxy groups as feedstock.
Preferably, the mass ratio of the C8-C10 alpha-olefin to the vinyltriethoxysilane is (90-95): 5-10. According to the invention, a small amount of vinyl triethoxysilane is added into C8-C10 alpha-olefin, and the poly alpha-olefin with a novel structure is prepared through oligomerization and hydrogenation, so that the poly alpha-olefin is used as base oil to effectively improve the application performance of gear oil.
The high-viscosity poly alpha-olefin base oil has a kinematic viscosity of 42.8-50.4 mm 2/s at 100 ℃, a viscosity index of 152-168 and a pour point of-42-36 ℃. The high-viscosity poly-alpha-olefin base oil prepared by the invention can keep good viscosity index in a wide temperature range, so that the wind power generator can be started safely in cold weather.
Preferably, the extreme pressure antiwear agent is at least one of chlorinated paraffin, vulcanized lard, phosphate, borate and vulcanized olefin. The extreme pressure antiwear agent has the functions of improving the load resistance of gear oil and preventing the gear surface from being worn under high load conditions.
Preferably, the antioxidant is at least one of a phenolic antioxidant and an amine antioxidant. The antioxidant has the function of preventing the gear oil from oxidative deterioration, and especially improving the high-temperature oxidation resistance of the gear oil.
Preferably, the defoamer is at least one of polysiloxane, methyl silicone oil, polyacrylate and polyether. The defoaming agent has the functions of reducing the foaming amount of the gear oil, reducing the contact between air in bubbles and the surface of the gear, and improving the micro pitting corrosion resistance of the gear.
Preferably, the rust inhibitor is at least one of alkenyl succinic acid and petroleum sulfonate. The polar groups in the rust inhibitor molecules have strong adsorption force on the metal surface, and a tight single-molecule or multi-molecule protective layer is formed on the metal surface to prevent the corrosive medium from contacting with the metal, thereby playing a role in rust prevention.
The second purpose of the invention is to provide a preparation method of the anti-micro pitting wind driven generator gear oil, which is characterized in that the high-viscosity poly alpha-olefin base oil, the extreme pressure antiwear agent, the antioxidant, the pour point depressant, the antirust agent and the defoaming agent are uniformly stirred and mixed according to the proportion, so that the anti-micro pitting wind driven generator gear oil is obtained. The stirring and mixing can be carried out at room temperature or under heating condition, and the heating temperature is not more than 55 ℃.
The beneficial effects of the invention are as follows: the invention prepares the high-viscosity poly-alpha-olefin base oil, and mixes the high-viscosity poly-alpha-olefin base oil with the extreme pressure antiwear agent, the antioxidant, the pour point depressant, the antirust agent and the defoamer to prepare the gear oil of the wind driven generator, and the gear oil can form a dense lubricating oil film with a certain thickness on the surface of the gear, so that the formation of micro pitting corrosion can be effectively inhibited, and meanwhile, the gear oil has excellent viscosity-temperature property, wear resistance, foam resistance, low-temperature fluidity, thermal oxidation stability and the like, thereby ensuring the normal operation of the gear of the wind driven generator and prolonging the service life of the gear of the wind driven generator.
The specific embodiment is as follows:
The invention is further described in connection with the following embodiments in order to make the technical means, the creation features, the achievement of the purpose and the effect of the invention easy to understand.
The invention tests the kinematic viscosity at 100 ℃ according to the standard GB/T265-1988; GB/T2541-1981 test viscosity index, GB/T3535-2006 test pour point, GB/T5096-2017 test copper corrosion, GB/T11143-2008 test liquid phase corrosion.
The following method of example 1 in patent CN 111019734a was used to prepare supported catalysts for oligomerization when preparing high viscosity poly-alpha-olefin base oils, using commercially available Mo-Ni/gamma-Al 2O3 catalysts (bar, 3mm diameter, 5-8 mm length, specific surface area 150-200 m 2/g, total pore volume greater than or equal to 0.65cm 3/g) as hydrogenation catalysts.
500ML of n-hexane, 95g of 1-decene, 5g of vinyl triethoxysilane and 20g of supported catalyst are added into a reaction kettle, and oligomerization reaction is carried out for 3 hours at the temperature of 50 ℃ and the pressure of 1 MPa; stopping the reaction, filtering to remove the catalyst, distilling at normal pressure to remove normal hexane, and distilling at reduced pressure to remove unreacted monomers and dimers to obtain the olefin oligomer. 50g of olefin oligomer and 5g of Mo-Ni/gamma-Al 2O3 catalyst are added into another reaction kettle, and hydrogenation reaction is carried out for 2 hours at the temperature of 210 ℃, the pressure of 3MPa and the space velocity of 0.5h -1 and the hydrogen-oil ratio of 550:1, so that the high-viscosity poly alpha-olefin base oil V-1 is obtained. The kinematic viscosity at 100 ℃ is 42.8mm 2/s, the viscosity index is 159, and the pour point is-36 ℃.
500ML of n-hexane, 90g of 1-decene, 10g of vinyl triethoxysilane and 20g of supported catalyst are added into a reaction kettle, and oligomerization reaction is carried out for 3 hours at the temperature of 60 ℃ and the pressure of 0.8 MPa; stopping the reaction, filtering to remove the catalyst, distilling at normal pressure to remove normal hexane, and distilling at reduced pressure to remove unreacted monomers and dimers to obtain the olefin oligomer. 50g of olefin oligomer and 5g of Mo-Ni/gamma-Al 2O3 catalyst are added into another reaction kettle, and hydrogenation reaction is carried out for 3 hours at the temperature of 220 ℃, the pressure of 2.5MPa, the space velocity of 1h -1 and the hydrogen-oil ratio of 500:1, so as to obtain the high-viscosity poly alpha-olefin base oil V-2. Kinematic viscosity at 100℃of 46.5mm 2/s, viscosity index of 168, pour point of-42 ℃.
500ML of n-hexane, 95g of 1-decene, 5g of vinyl triethoxysilane and 15g of supported catalyst are added into a reaction kettle, and oligomerization reaction is carried out for 3 hours at the temperature of 80 ℃ and the pressure of 0.6 MPa; stopping the reaction, filtering to remove the catalyst, distilling at normal pressure to remove normal hexane, and distilling at reduced pressure to remove unreacted monomers and dimers to obtain the olefin oligomer. 50g of olefin oligomer and 5g of Mo-Ni/gamma-Al 2O3 catalyst are added into another reaction kettle, and hydrogenation reaction is carried out for 2 hours at the temperature of 230 ℃, the pressure of 2MPa and the space velocity of 0.5h -1 and the hydrogen-oil ratio of 600:1, so that the high-viscosity poly alpha-olefin base oil V-3 is obtained. The kinematic viscosity at 100 ℃ is 50.4mm 2/s, the viscosity index is 152, and the pour point is-40 ℃.
500ML of n-hexane, 100g of 1-decene and 20g of supported catalyst are added into a reaction kettle, and oligomerization reaction is carried out for 3 hours at the temperature of 50 ℃ and the pressure of 1 MPa; stopping the reaction, filtering to remove the catalyst, distilling at normal pressure to remove normal hexane, and distilling at reduced pressure to remove unreacted monomers and dimers to obtain the olefin oligomer. 50g of olefin oligomer and 5g of Mo-Ni/gamma-Al 2O3 catalyst are added into another reaction kettle, and hydrogenation reaction is carried out for 2 hours at the temperature of 210 ℃, the pressure of 3MPa and the space velocity of 0.5h -1 and the hydrogen-oil ratio of 550:1, so that the high-viscosity poly alpha-olefin base oil V-0 is obtained. Kinematic viscosity at 100℃of 33.2mm 2/s, viscosity index 155, pour point of-32 ℃.
Example 1
100 Parts of high-viscosity poly alpha-olefin base oil V-1, 5 parts of chlorinated paraffin, 2 parts of dinonyl diphenylamine, 1 part of dodecenyl succinic acid and 0.5 part of polysiloxane are stirred and mixed uniformly to obtain gear oil.
Example 2
100 Parts of high-viscosity poly alpha-olefin base oil V-1, 4 parts of vulcanized lard, 2 parts of dinonyl diphenylamine, 1 part of dodecenyl succinic acid and 0.5 part of methyl silicone oil are uniformly stirred and mixed to obtain gear oil.
Example 3
100 Parts of high-viscosity poly alpha-olefin base oil V-2, 3 parts of potassium metaborate, 1 part of diisooctyl diphenylamine, 0.5 part of barium petroleum sulfonate and 0.5 part of polysiloxane are uniformly stirred and mixed to obtain gear oil.
Example 4
100 Parts of high-viscosity poly alpha-olefin base oil V-2, 5 parts of chlorinated paraffin, 1 part of diisooctyl diphenylamine, 0.5 part of barium petroleum sulfonate and 0.4 part of polysiloxane are stirred and mixed uniformly to obtain gear oil.
Example 5
100 Parts of high-viscosity poly alpha-olefin base oil V-3, 4 parts of vulcanized lard, 2 parts of dinonyl diphenylamine, 0.5 part of dodecenyl succinic acid and 0.4 part of methyl silicone oil are uniformly stirred and mixed to obtain gear oil.
Example 6
100 Parts of high-viscosity poly alpha-olefin base oil V-3, 3 parts of potassium metaborate, 2 parts of dinonyl diphenylamine, 1 part of barium petroleum sulfonate and 0.5 part of methyl silicone oil are uniformly stirred and mixed to obtain gear oil.
Comparative example 1
100 Parts of high-viscosity poly alpha-olefin base oil V-0, 5 parts of chlorinated paraffin, 2 parts of dinonyl diphenylamine, 1 part of dodecenyl succinic acid and 0.5 part of polysiloxane are stirred and mixed uniformly to obtain gear oil.
Comparative example 2
100 Parts of high-viscosity poly-alpha-olefin base oil (Inlet poly-alpha-olefin 174I), 5 parts of chlorinated paraffin, 2 parts of dinonyl diphenylamine, 1 part of dodecenyl succinic acid and 0.5 part of polysiloxane are stirred and mixed uniformly to obtain gear oil.
The gear oils prepared in the above examples and comparative examples were subjected to the micro pitting corrosion resistance test, and the results are shown in table 1.
TABLE 1
Copper sheet corrosion (100 ℃,3 h) Liquid phase rust (artificial sea water)
Example 1 1a Stainless steel
Example 2 1a Stainless steel
Example 3 1a Stainless steel
Example 4 1a Stainless steel
Example 5 1a Stainless steel
Example 6 1a Stainless steel
Comparative example 1 1b Stainless steel
Comparative example 2 1b Stainless steel
As can be seen from Table 1, the high viscosity polyalphaolefin base oils prepared according to the present invention provide gear oils with excellent micropitting properties.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The anti-micro pitting wind driven generator gear oil is characterized by comprising the following raw materials in parts by weight:
100 parts of high viscosity poly alpha-olefin base oil
Extreme pressure antiwear agent 1-5 parts
0.5-3 Parts of antioxidant
0.1-2 Parts of antirust agent
0.05-1 Part of defoaming agent;
The preparation method of the high-viscosity poly-alpha-olefin base oil comprises the following steps: oligomerization of C8-C10 alpha-olefin and vinyl triethoxysilane to obtain olefin oligomer, and hydrogenation of the olefin oligomer to obtain high viscosity poly alpha-olefin base oil;
The mass ratio of the C8-C10 alpha-olefin to the vinyl triethoxysilane is (90-95) to (5-10).
2. The anti-micro pitting wind turbine gear oil of claim 1, wherein: the high-viscosity poly-alpha-olefin base oil has a kinematic viscosity of 42.8-50.4 mm 2/s at 100 ℃, a viscosity index of 152-168 and a pour point of-42-36 ℃.
3. The anti-micro pitting wind turbine gear oil of claim 1, wherein: the extreme pressure antiwear agent is at least one of chlorinated paraffin, vulcanized lard, phosphate, borate and vulcanized olefin.
4. The anti-micro pitting wind turbine gear oil of claim 1, wherein: the antioxidant is at least one of phenolic antioxidants and amine antioxidants.
5. The anti-micro pitting wind turbine gear oil of claim 1, wherein: the defoaming agent is at least one of polysiloxane, methyl silicone oil, polyacrylate and polyether.
6. The anti-micro pitting wind turbine gear oil of claim 1, wherein: the antirust agent is at least one of alkenyl succinic acid and petroleum sulfonate.
7. The method for preparing the gear oil of the micro-pitting corrosion-resistant wind driven generator as set forth in any one of claims 1 to 6, which is characterized in that: and uniformly stirring and mixing the high-viscosity poly alpha-olefin base oil, the extreme pressure antiwear agent, the antioxidant, the pour point depressant, the antirust agent and the defoamer according to the proportion to obtain the micro pitting corrosion resistant gear oil for the wind driven generator.
CN202310353685.7A 2023-04-05 Anti-micro pitting wind driven generator gear oil and preparation method thereof Active CN116590074B (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109536248A (en) * 2018-10-30 2019-03-29 新疆金雪驰科技股份有限公司 Fully synthetic anti-microdot erosion Wind-turbine gear oil composition of one kind and preparation method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109536248A (en) * 2018-10-30 2019-03-29 新疆金雪驰科技股份有限公司 Fully synthetic anti-microdot erosion Wind-turbine gear oil composition of one kind and preparation method thereof

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Effective date of registration: 20240517

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Applicant after: Three Gorges new energy offshore wind power operation and maintenance Jiangsu Co.,Ltd.

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