CN103525522B

CN103525522B - Stirling engine lubricant

Info

Publication number: CN103525522B
Application number: CN201310493154.4A
Authority: CN
Inventors: 黄福川; 李胜; 肖友程; 蓝明新; 梁慧; 唐彩珍; 粟满荣; 唐兴中; 田宗义; 廖丹葵; 刘琨; 黄旖瑶
Original assignee: Guangxi University
Current assignee: Guangxi University
Priority date: 2013-10-21
Filing date: 2013-10-21
Publication date: 2015-02-18
Anticipated expiration: 2033-10-21
Also published as: CN103525522A

Abstract

The invention discloses a Stirling engine lubricant. The Stirling engine lubricant is characterized in that poly alpha-olefin and polyol ester are compounded as base oil, and a plurality of composite additives are coordinated. The Stirling engine lubricant comprises an antioxidant preservative, an antioxidant, a metal deactivator, an anti-foaming agent, a clearing agent, a dispersing agent, a friction modifier, and the like. The Stirling engine lubricant is suitable for being used as the lubricant of the Stirling engine lubricant, which is independent of air.

Description

A kind of stirling engine lubricant

Technical field

The invention belongs to internal combustion (IC) engine lubricating oil, particularly a kind of stirling engine field of lubricant.

Background technology

Stirling engine is a kind of continuous combustion engine of indirect heating, it is by the high-temperature gas of the external firing working medium (Stirling-electric hybrid peculiar to vessel makes cycle fluid with helium usually) through heating tube heating internal recycling, internal recycling working medium expanded by heating promotes piston work done, makes engine output shaft power.In order to make engine run continuously without under air conditions, need continuously supply oxygen to burn equally and supply heat, thus SEAIP is also equipped with the liquid oxygen tank of comparatively large capacity.In order to get rid of exhaust gases after combustion, two kinds of methods are had to select.One utilizes exhaust gas pressure to be directly discharged to external dynamic sea, and this needs higher combustion pressure (about 30bar), and unburned O ₂directly can drain into outboard with waste gas, cause not firing O ₂gas and the CO having little time to dissolve ₂gas emits to sea.Another kind method is as the CCDAIP system, equipment exhaust cooling CO ₂absorption by Sea Water device and water management system, this sampling device can be more complicated than the way of direct combustion gas, but combustion pressure can be made to reduce, and burning with dark impact of diving, can not produce bubble flight path, better disguised.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of lubricant being applicable to the stirling engine not relying on air.

The present invention solves the problems of the technologies described above by following technical scheme: adopt oil based on Poly alpha Olefins (PAO) and polyol ester compound, coordinate multiple composite additive, its each component and mass percent thereof are:

Component	Content (mass percent)
		Base oil	Surplus
Antioxidant preservative	1.5%～2.0%
		Rust-preventive agent	0.5%～1.0%
Oxidation inhibitor	2.0%～5.0%
		Kilfoam	0.001%～0.01%
Metal passivator	1.0%～3.0%

Purification agent	8.0%～10.0%
		Dispersion agent	8.0%～10.0%
Friction improver	2.0%～5.0%

Base oil is the Poly alpha Olefins (PAO) of mass ratio 60% ~ 50% and the polyol ester compound of 40% ~ 50%.

Antioxidant preservative is the dialkyl dithiophosphoric acid oxygen molybdenum oil-soluble organic molybdenum of mass ratio 60% ~ 70% and the two octyl group basic zinc salt compound of sulphur phosphorus of 40% ~ 30%.

Rust-preventive agent is alkenyl succinic acid half ester.

Oxidation inhibitor is the 124 Triazole derivative of mass ratio 60% ~ 50% and the N of 40% ~ 50%, N-bis-sub-bigcatkin willow propylene diamine compound.

Kilfoam is dimethyl silicone oil.

Metal passivator is thiadiazoles derivative.

Purification agent be the low alkali value calcium mahogany sulfonate of mass ratio 30% ~ 35%, the super high TNB calcium heavy alkyl benzene sulfonate of 30% ~ 35% and 40% ~ 30% calcium sulfenyl phenolate compound.

Dispersion agent is the polyisobutene succinimide (high nitrogen) of mass ratio 60% ~ 50% and the boronation high molecular weight polyisobutylene succimide compound of 40% ~ 50%.

Friction improver is phosphoric acid ester.

Stirling engine lubricant of the present invention, adopts oil based on Poly alpha Olefins (PAO) and polyol ester compound, coordinates multiple composite additive; Comprise: antioxidant preservative, oxidation inhibitor, metal passivator, kilfoam, purification agent, dispersion agent, friction improver etc.Be suitable for the lubricant as the stirling engine not relying on air.

Embodiment

Embodiment 1:

Following component is in harmonious proportion by mass percentage and forms:

Above component summation is 100%.

Embodiment 2:

Following component is in harmonious proportion by mass percentage and forms:

Above component summation is 100%.

Embodiment 3:

Following component is in harmonious proportion by mass percentage and forms:

Above component summation is 100%.

Below the main physical and chemical index of embodiment 1 product:

Project	Quality index
		Moisture, % is not more than	Vestige
100 DEG C of kinematic viscosity mm ²/s	11.8
		Flash-point (opening) DEG C, is greater than	220
Mechanical impurity, % is not more than	Nothing
		Borderline pumping temperature, DEG C, not higher than	25
Pour point, DEG C, not higher than	-30
		Sulfated ash, %	1.0
Corrosion test (copper sheet, 100 DEG C, 3h), level	1
		Viscosity index, is not less than	120

Claims

1. a stirling engine lubricant, it is characterized in that coordinate multiple composite additive, its each constituent mass percentage ratio is with oil based on poly-ɑ-alkene and polyol ester compound:

Component Mass percentage content Base oil Surplus Antioxidant preservative 1.5％～2.0％ Rust-preventive agent 0.5％～1.0％ Oxidation inhibitor 2.0％～5.0％ Kilfoam 0.001％～0.01％ Metal passivator 1.0％～3.0％ Purification agent 8.0％～10.0％ Dispersion agent 8.0％～10.0％ Friction improver 2.0％～5.0％

Wherein:

Base oil is poly-ɑ-alkene and 40% ~ 50% polyol ester compound of mass ratio 60% ~ 50%;

Antioxidant preservative is the dialkyl dithiophosphoric acid oxygen molybdenum oil-soluble organic molybdenum of mass ratio 60% ~ 70% and the two octyl group basic zinc salt compound of sulphur phosphorus of 40% ~ 30%;

Rust-preventive agent is alkenyl succinic acid half ester;

Oxidation inhibitor is the 124 Triazole derivative of mass ratio 60% ~ 50% and the N of 40% ~ 50%, N-bis-sub-bigcatkin willow propylene diamine compound;

Kilfoam is dimethyl silicone oil;

Metal passivator is thiadiazoles derivative;

Purification agent be the low alkali value calcium mahogany sulfonate of mass ratio 30% ~ 35%, the super high TNB calcium heavy alkyl benzene sulfonate of 30% ~ 35% and 40% ~ 30% calcium sulfenyl phenolate compound; The percentage ratio summation of three components is 100%;

Dispersion agent is the high nitrogen polyisobutene succinimide of mass ratio 60% ~ 50% and the boronation high molecular weight polyisobutylene succimide compound of 40% ~ 50%;

Friction improver is phosphoric acid ester.