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Wind-powered lubrication system with pressure buffer

A lubricating system and buffer technology, which is applied in the direction of engine lubrication, lubricating parts, lubricating oil control valves, etc., can solve the problems of reducing the safety and reliability of the lubricating system, increasing the system failure rate, and the hazards of the lubricating system. The effects of modernization and mass production, improved safety performance, and easy installation

Active Publication Date: 2015-06-10
DALIAN HUARUI HEAVY IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The working environment temperature of wind power generation equipment varies greatly, and the ambient temperature can reach -30°C when working at low temperature. The oil cooling lubrication system of the wind power gearbox can usually be started at an oil temperature of around -10°C, and the viscosity of the lubricating oil is very high at this time. Even if the electric oil pump is started at a low speed, the pressure at the moment of starting will be very high, usually up to about 2MPa. Such an instantaneous pressure shock will bring harm to the lubrication system, increase the failure rate of the system, and reduce the safety and reliability of the lubrication system.

Method used

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  • Wind-powered lubrication system with pressure buffer
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  • Wind-powered lubrication system with pressure buffer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 is an embodiment of the external guide of the return spring of the pressure buffer, such as image 3 shown. The piston 4 is provided with a travel pin 18, and the center of the travel pin 18 has a hole through the two ends, the hole diameter is the same as that of the center hole of the inner end shaft of the end cover, and the travel pin 18 is fixedly installed in the center of the abutment surface of the piston 4 and the return spring 5 In the pin hole at , the distance between the end face and the end face of the shaft-shaped table in the end cover 7 is s, 02 / 4k-S 0 , where p is the outlet pressure of the electric oil pump of the wind power lubrication system, p is 0.7MPa-2.8MPa, d is the diameter of the piston (4), k is the stiffness of the return spring 5, S 0 is the initial compression amount of the return spring (5) after assembly. The back-moving spring 5 is a butterfly spring, and the total gap between the outer circumference of the butterfly sp...

Embodiment 2

[0031] Embodiment 2 is an embodiment of guiding in the return spring of the pressure buffer, such as Figure 4 shown.

[0032]The piston is provided with the same travel pin as in Embodiment 1. A guide sleeve 19 is installed on the inner shaft-shaped platform of the end cover, and the guide sleeve 19 is sleeved on the inner shaft-shaped platform of the end cover. Above, the rear end surface of the guide sleeve 19 is in contact with the end cover 7, and there is a distance s between the front end surface and the bottom surface of the stroke pin hole of the piston, 02 / 4k-S 0 , where p is the outlet pressure of the electric oil pump of the wind power lubrication system, p is 0.7MPa-2.8MPa, d is the diameter of the piston, k is the stiffness of the return spring, S 0 For the initial compression of the return spring after assembly, the return spring 5 is placed outside the guide sleeve 19 . Back-moving spring 5 is a butterfly spring, and the total gap between the inner circumfe...

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Abstract

The invention relates to a wind-powered lubrication system with a pressure buffer. The wind-powered lubrication system comprises a dual-speed motor, an electric oil pump, a pressure detection contact, a one-way valve, a filter device, a temperature control valve, an air cooler, a pressure sensor and the pressure buffer, wherein the pressure buffer is connected between an outlet of the electric oil pump and an interface of the filter, a piston type hydraulic cylinder with no piston rod is adopted as the pressure buffer, one side cavity of a piston is communicated with an outlet of the electric oil pump through a pipeline, a reset spring is arranged on the other side cavity, and the cavity with the reset spring is communicated with an interface of a gearbox or a fuel tank. The wind-powered lubrication system has the beneficial effects that the pressure impact peak in low-temperature startup of the wind-powered lubrication system can be reduced effectively, system pressure fluctuations at low temperature and room temperature can be absorbed, and the performance of the device for safety use can be improved; the pressure buffer has a simple structure, can be conveniently installed and is suitable for series mass production; and the work interval is large and cannot be affected by the ambient temperature.

Description

technical field [0001] The invention belongs to a pressure buffer for a hydraulic system, in particular to a pressure buffer for a wind power lubricating system. Background technique [0002] The working environment temperature of wind power generation equipment varies greatly, and the ambient temperature can reach -30°C when working at low temperature. The oil cooling lubrication system of the wind power gearbox can usually be started at an oil temperature of around -10°C, and the viscosity of the lubricating oil is very high at this time. Even if the electric oil pump is started at a low speed, the pressure at the moment of starting will be very high, usually up to about 2MPa. Such an instantaneous pressure shock will bring harm to the lubrication system, increase the failure rate of the system, and reduce the safety and reliability of the lubrication system. [0003] At present, the wind power lubrication system used in China, including many imported lubrication systems, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16N7/38F16N23/00F03D11/00
CPCY02P70/50
Inventor 刘林王景财陈尊陈强史显忠侯广库吴冠宇
Owner DALIAN HUARUI HEAVY IND GRP CO LTD
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