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Sizing material for sealing rotating shaft of fan

A technology for rotating shaft and sealing, which is applied in the field of rubber for fan rotating shaft sealing, can solve the problems of difficulty in secondary processing and grinding of the main shaft, difficulty in fine processing of huge shafts, and reduced life of seals, etc., and achieves ozone resistance and long-term resistance. Effects of improved aging performance, high weather resistance, and cost reduction

Active Publication Date: 2013-12-18
广州国机密封科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Since the diameter of the megawatt fan shaft is between 1000-4000mm, it is very difficult to finely process such a huge shaft, and the cost of achieving a hardness above HRC55 is also high
Once the main shaft is worn, it will directly lead to seal leakage and serious leakage. In addition, after replacing the new seal, the grinding surface of the sealing lip will be the worn shaft, and the life of the seal will be greatly reduced.
It is also very difficult and troublesome to perform secondary processing and grinding on the worn spindle at the wind factory site

Method used

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  • Sizing material for sealing rotating shaft of fan
  • Sizing material for sealing rotating shaft of fan
  • Sizing material for sealing rotating shaft of fan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] Embodiment and comparative example are prepared according to the following methods:

[0030] (1) Preparation method of rubber compound

[0031] (1) Preparation method of rubber compound

[0032] The rubber compound is produced by the ML-1.5L internal mixer of Baihong Machinery (Shanghai) Co., Ltd. The order of feeding is as follows: raw rubber and small materials are mixed for 2 minutes, carbon black is added and mixed for 4 minutes at room temperature, plasticizer and Filler mixing temperature reaches 130°C to remove glue, let it stand for more than 24 hours to obtain a section of mixed rubber; put a section of mixed rubber and the remaining components into the ML-1.5L internal mixer, and mix for about 90 seconds from room temperature , When the temperature reaches 105°C, the glue is discharged to obtain the mixed rubber. See Table 1 for the amounts and specific sampling sequences of the components of OU-1, OU-2 and OU-3 three groups of embodiments. At the same time...

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Abstract

The invention discloses a sizing material for rotary sealing of megawatt-level fans, and belongs to the technical field of rubber seal. The prepared sizing material disclosed by the invention is prepared from ternary polymerization epichloro-hydrin rubber, millable polyether polyurethane rubber, a solid self-lubricant material and a hyperoxide curing system. The sizing material has the characteristics of good low temperature resistance, abrasive resistance, long-term weather aging resistance and self-lubricating property, is free of abrasion with a shaft, and is especially suitable for manufacturing of a rotary seal element of the fan capable of resisting a low temperature of -40 DEG C, or manufacturing of a fan sealing element of which the surface hardness of the rotating shaft is smaller than rockwell hardness (HRC)55, or manufacturing of an end face sealing element of the fan assembled in a drawing manner.

Description

technical field [0001] The invention belongs to the technical field of rubber seals, and in particular relates to a rubber material for sealing the rotating shaft of a fan. Background technique [0002] Generally, wind turbines in European countries are designed according to IEC standards, class II wind conditions, and a temperature range of -20 to +40°C. Wind factories in Inner Mongolia and Northwest China have long winters, and the lowest temperature has reached -40°C or even lower. Considering the design life of fan seals, foreign bearing companies proposed in 2004 that fan seals should be designed to meet the needs of a 20-year service life. The purpose of this requirement is to avoid the need to replace the seal after a period of use like the traditional annular seal. pieces. After the seal is made into a split form and the on-line installation is solved, the 20-year seal design requirement with the same lifespan as the host is unnecessary. "Development of Cloth Oil ...

Claims

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Application Information

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IPC IPC(8): C08L71/03C08L75/08C08L67/02C08L27/18C08K13/02C08K5/09C08K5/372C08K5/098C08K3/22C08K3/04C08K5/14C08K5/3415C09K3/10
Inventor 肖风亮王勇陈翔
Owner 广州国机密封科技有限公司
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