Lubricating oil composition for gear box of speed reducer of solar bogie

Abstract

The invention relates to the technical field of lubricating oil, in particular to a lubricating oil composition for a gear box of a speed reducer of a solar bogie. The lubricating oil composition comprises the bright stock, the synthetic base oil and the mineral base oil which are compounded, so that the extreme pressure anti-wear agent and the amine antioxidant can be promoted to play a synergistic effect, and meanwhile, the performance of the viscosity index improver and the pour point depressant can be promoted to play; the lubricating oil has excellent high and low temperature performance, good sealing material compatibility performance, excellent adhesion performance and super-long service life, and is suitable for single-rotation and multi-rotation worm and gear speed reducers selected by solar bogies.

Description

Technical Field

[0001] The invention relates to the technical field of lubricating oils, and in particular to a lubricating oil composition for a solar bogie reducer gearbox. Background Art

[0002] Whether it is photovoltaic or solar thermal, its solar light receiving system needs a transmission mechanism that rotates with the sun. Single-axis rotary and dual-axis rotary reducers are widely used in the solar power generation industry because of their self-locking, large transmission ratio and positioning accuracy. Taking the heliostat of tower solar thermal power generation as an example, each mirror needs such a reducer device to ensure that the heliostat and the angle of sunlight are accurately matched. The photovoltaic panel rotation device also uses single-axis rotary and dual-axis rotary reducers.

[0003] Based on the special characteristics of the solar bogie gearbox, the matching lubricant must also meet the requirements of long life and harsh working conditions. The goal is to achieve the same life of 30 years as the device without oil change. The lubricant should have the following characteristics:

[0004] (1) Excellent high and low temperature performance. The solar transmission mechanism is completely exposed to the outdoors, and most solar power generation projects are located in harsh environmental conditions. The oil should have good low-temperature fluidity and excellent antioxidant ability to achieve the 30-year lifespan requirement of the equipment.

[0005] (2) Good sealing rubber compatibility. Unlike general industrial devices, the solar transmission mechanism is exposed to outdoor space. Any leakage of oil will cause external pollution of solar panels and heliostats. It is for this reason that users initially chose semi-fluid grease to solve the leakage problem. However, if the oil does not have good rubber compatibility, it cannot fundamentally solve the problem.

[0006] (3) Excellent adhesion performance. Due to the ultra-low speed of the solar transmission device, the oil needs to have good adhesion performance to ensure the oil film protection of the friction surface during operation.

[0007] (4) Low friction characteristics. This characteristic is one of the biggest features of worm gear oil compared to general industrial gear lubricants. The movement of worm gears is mainly sliding friction, which makes it difficult to form an oil wedge. The tooth surface temperature is high, the oil film is easily destroyed, and it is easy to cause heat, low transmission efficiency, and easy wear of the worm gear. In addition, the solar transmission device is subjected to a large impact load and harsh lubrication conditions. The oil should have better anti-wear and anti-scratch capabilities, and a suitable low friction coefficient to ensure the transmission efficiency of the worm gear reducer and reduce temperature rise. Summary of the invention

[0008] The present invention provides a lubricating oil composition, comprising the following components in parts by weight:

[0009]

[0010] The base oil includes bright oil, synthetic base oil and mineral base oil;

[0011] The extreme pressure anti-wear agent is at least one of dibutyl phosphite, triphenylphosphonium sulfate, alkylphosphonium sulfate, nonylamine phosphate, 2-n-octyl phosphite, ashless butyl triphenylthiophosphate, and acidic phosphate ammonium salt;

[0012] The antioxidant is an amine antioxidant.

[0013] By adopting the three compound base oils, the synergistic effect of the above-mentioned extreme pressure anti-wear agents and amine antioxidants can be promoted, while the performance of viscosity index agents and pour point depressants can be promoted, so that the lubricant has excellent high and low temperature performance, good sealing material compatibility, excellent adhesion performance and ultra-long service life, and is suitable for single-turn and multi-turn worm gear reducers selected for solar bogies.

[0014] The present invention takes into account the application conditions of the solar bogie and the equipment characteristics of the rotary worm gear reducer. The viscosity of the lubricating oil composition of the present invention at 40°C is 670-1000mm 2 / s.

[0015] Preferably, the extreme pressure anti-wear agent is selected from at least one of triphenylphosphonium sulfate, alkylphosphonium sulfate, nonylamine phosphate, 2-n-octyl phosphite, ashless butyl triphenylthiophosphate, and acidic phosphate ammonium salt.

[0016] Preferably, the extreme pressure anti-wear agent is selected from one or more of triphenylphosphonium sulfate, alkylphosphonium sulfate, nonylamine phosphate, and 2-n-octylphosphite.

[0017] Preferably, the extreme pressure anti-wear agent is 1-5 parts, more preferably 1-3 parts.

[0018] Preferably, the antioxidant is at least one of dialkyl diphenylamine, styrenated diphenylamine, N-phenyl-α-naphthylamine, and alkylated phenyl-α-naphthylamine.

[0019] Preferably, the antioxidant is 0.5-2.5 parts, more preferably 0.5-2 parts.

[0020] Preferably, the bright oil is BS150; and / or the synthetic base oil is at least one of polyalphaolefin and ester base oil; and / or the mineral base oil is at least one of Class II and Class III hydrogenated base oils.

[0021] Preferably, the bright oil is BS150; the polyalphaolefin base oil is PAO40 or PAO10; and the mineral base oil is II10 base oil.

[0022] When the above base oils are used in combination, the synergistic effect of extreme pressure anti-wear agents and amine antioxidants can be greatly promoted, while the performance of viscosity index agents and pour point depressants can be greatly promoted.

[0023] Preferably, the extreme pressure anti-wear agent is at least one of triphenylphosphonium sulfate and ashless butyl triphenylthiophosphate.

[0024] Preferably, the amine antioxidant is at least one of alkylated phenyl-α-naphthylamine and N-phenyl-α-naphthylamine.

[0025] Preferably, the viscosity modifier is a polyisobutylene viscosity modifier, preferably a styrene butadiene copolymer;

[0026] And / or, the pour point depressant is Vx 8-310.

[0027] Preferably, the lubricating oil composition further comprises the following components in parts by weight:

[0028] Friction modifier 0.001-2 parts;

[0029] Preferably, the friction modifier is a macromolecular organic polymer friction modifier;

[0030] It is preferably a molybdenum amine compound, and more preferably at least one of acyl alcoholamine molybdate glyceride and alkyl alcoholamine molybdate.

[0031] Preferably, the friction modifier is 0.001-1 part, more preferably 0.005-0.5 part.

[0032] Preferably, the lubricating oil composition further comprises the following components in parts by weight:

[0033] Rust inhibitor 0.1-0.5 parts;

[0034] Preferably, the rust inhibitor is a carboxylic acid rust inhibitor;

[0035] Preferred is a long-chain alkenyl or alkyl succinic acid, and more preferred is dodecenyl succinic acid.

[0036] Preferably, the lubricating oil composition comprises the following components in parts by weight:

[0037]

[0038] Furthermore, the present invention provides use of the lubricating oil composition in any of the above embodiments in a solar bogie gearbox.

[0039] The lubricating oil composition of the present invention can be prepared by conventional technical means, that is, the components are mixed according to the proportion by automatic batch blending (ABB) or synchronous dosage blending (SMB), and stirred at 50-70° C. for 4-8 hours to obtain the lubricating oil composition.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] The present invention provides a special oil composition developed for a solar bogie reducer gearbox, which has a long life, good compatibility with sealing materials, and can meet the lubrication requirements of single-axis and double-axis rotating worm gear reducers. The oil composition has excellent high and low temperature performance, good sealing material compatibility, excellent adhesion performance, suitable friction performance and ultra-long service life. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Each embodiment is prepared according to the following steps: the components are mixed in an ABB manner according to the proportion, and stirred at 60° C. for 4 hours to obtain the product.

[0044] Example 1

[0045] This embodiment provides a lubricating oil composition, the composition of which is shown in Table 1, and the percentages represent weight percentages.

[0046] Table 1

[0047] Element content Acyl alcohol amine molybdate glyceride 0.09％ Triphenylphosphonium sulfate 2.5％ N-phenyl-α-naphthylamine 1％ Dodecenylsuccinic acid 0.3％ Vx 8-310 6％ Viscosity modifier styrene butadiene copolymer 25％ BS150 43％ II10 base oil 20％ PAO40 2.11％

[0048] Example 2

[0049] This embodiment provides a lubricating oil composition, the composition of which is shown in Table 2, and the percentages represent weight percentages.

[0050] Table 2

[0051]

[0052]

[0053] Example 3

[0054] This example provides a lubricating oil composition, the composition of which is different from that of Example 2 only in that BS150 is 13.5%, II10 base oil is 7.5%, and PAO40 is 54.2%.

[0055] Test example

[0056] According to the standard test method of this industry, key performance tests were performed on the embodiments and commercially available products. The results are shown in Table 3.

[0057] Table 3

[0058]

[0059]

[0060] It can be seen from the above test results that the solar bogie reducer gearbox lubricating oil composition provided by the present invention has excellent performance, excellent high and low temperature performance, good sealing material compatibility, excellent adhesion performance, suitable friction performance and ultra-long service life, and is suitable for single-turn and multi-turn worm gear reducers selected for solar bogies. Compared with the mainstream grease products on the market, it has obvious advantages in extreme pressure performance and antioxidant performance, and the lubricating oil of the present invention has better fluidity than grease, which is more conducive to equipment heat dissipation and cooling. Among them, the comprehensive performance of the lubricating oil composition provided in Example 3 is the best.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lubricating oil composition, characterized in that: It includes the following components by weight: The base oil includes bright oil, synthetic base oil and mineral base oil; The extreme pressure anti-wear agent is at least one of dibutyl phosphite, triphenylphosphonium sulfate, alkylphosphonium sulfate, nonylamine phosphate, 2-n-octyl phosphite, ashless butyl triphenylthiophosphate, and acidic phosphate ammonium salt; The antioxidant is an amine antioxidant.

2. The lubricating oil composition according to claim 1, characterized in that Its kinematic viscosity at 40°C is 670-1000mm 2 / s.

3. The lubricating oil composition according to claim 1 or 2, characterized in that: The bright oil is BS150; and / or the synthetic base oil is at least one of polyalphaolefin and ester base oil; and / or the mineral base oil is at least one of Class II and Class III hydrogenated base oils.

4. The lubricating oil composition according to claim 1, characterized in that The extreme pressure anti-wear agent is at least one of triphenylphosphonium sulfate and ashless butyl triphenylthiophosphate.

5. The lubricating oil composition according to claim 4, characterized in that The amine antioxidant is at least one of alkylated phenyl-α-naphthylamine and N-phenyl-α-naphthylamine.

6. The lubricating oil composition according to claim 1, characterized in that: The viscosity modifier is a polyisobutylene viscosity modifier, preferably a styrene butadiene copolymer; And / or, the pour point depressant is Vx 8-310.

7. The lubricating oil composition according to claim 1, characterized in that Also includes the following components by weight: Friction modifier 0.001-2 parts; Preferably, the friction modifier is a macromolecular organic polymer friction modifier; It is preferably a molybdenum amine compound, and more preferably at least one of acyl alcoholamine molybdate glyceride and alkyl alcoholamine molybdate.

8. The lubricating oil composition according to claim 1, characterized in that: Also includes the following components by weight: Rust inhibitor 0.1-0.5 parts; Preferably, the rust inhibitor is a carboxylic acid rust inhibitor; Preferred is a long-chain alkenyl or alkyl succinic acid, and more preferred is dodecenyl succinic acid.

9. The lubricating oil composition according to claim 8, characterized in that It includes the following components by weight:

10. Use of the lubricating oil composition according to any one of claims 1 to 9 in a solar bogie gearbox.

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