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Lubricating system and reforming method thereof

A lubricating system and lubricating oil technology, which is applied in the field of lubricating systems, can solve problems such as mixing in, expensive, and affecting the production and operation of power plants

Inactive Publication Date: 2003-08-13
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned conventional oil return main pipe 21, a free liquid surface 22 is formed, and the upper part of the inner surface of the oil return main pipe 21 may be rusted, so after several years, the oil return main pipe 21 may degenerate and rust It may be mixed into the lubricating oil, which will seriously affect the production operation of the power plant
While stainless steel can be used to fabricate oil return header 21 to contain rust in some cases, stainless steel is difficult to machine and more expensive than plain carbon steel
In addition, the common oil return main pipe 21 must be inclined towards the oil tank, but the inclination angle cannot be too large in order to form a free liquid surface 22, which greatly restricts the layout design of the factory
[0008] The Japanese utility model patents whose publication numbers are Showa 63-34305 and Showa 61-14796 describe some efforts to maintain the inner surface of the oil return main pipe. In the system, there is a dry area in the upper part of the oil return header, which will cause rust

Method used

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  • Lubricating system and reforming method thereof
  • Lubricating system and reforming method thereof
  • Lubricating system and reforming method thereof

Examples

Experimental program
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Effect test

no. 1 example

[0024] Combination below figure 2 The first embodiment of the lubrication system of the present invention is introduced. The turbine generator 1 has a plurality of bearings 3, in figure 2 Three bearings are shown in . Lubricating oil in the oil tank 2 is supplied to the bearing 3 through the oil supply pump 13 and the oil supply pipe 12 . The oil supplied to the bearing 3 is returned to the oil tank 2 through the oil return pipe 34 by gravity.

[0025] The oil supply line 12 is arranged in an oil return line 34 which functions as a so-called wet protection for the oil supply line 12 . In this embodiment, the oil supply pump 13 is located inside the oil tank 2 , but it may also be arranged outside the oil tank 2 .

[0026] The oil return pipe 34 has a plurality of outflow pipes 20 and an oil return main pipe 31 . Each outflow pipe 20 is connected with a bearing 3 and extends vertically downwards to an oil return main pipe 31 , and the oil return main pipe 31 collects the...

no. 2 example

[0033] will be combined below image 3 The second embodiment of the lubrication system of the present invention is introduced. This embodiment is similar to the first embodiment, but the oil supply pipe 12 is arranged outside the oil return pipe 31 instead of inside. An oil supply pipe 12 guides oil from the oil tank 2 to the bearing 3 by means of an oil supply pump 13 . This embodiment is easier to construct since the oil supply pipe 12 is separated from the oil return main pipe 34 .

no. 3 example

[0035] Combination below Figure 4 A third embodiment of the lubrication system according to the invention is presented. This embodiment is an example of retrofitting an existing lubricating system into a lubricating system consistent with the present invention. Existing lubrication systems shown in Figure 1 can be easily retrofitted by following the steps below to Figure 4 Lubrication system shown.

[0036] Separate the existing oil return main pipe 21 from the existing outflow pipe 20 and the existing oil tank 2 , while keeping the existing oil return main pipe 21 covering the lower part of the oil supply pipe 12 . Then the bottom end of the existing outflow pipe 20 is connected with the oil tank 2 through a new oil return main pipe 31 , and the new oil return main pipe 31 is arranged on the outside of the existing oil return main pipe 21 . The new oil return main pipe 31 has an overflow piece 6 . and figure 2 and 3 Like the first and second embodiments shown, the re...

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Abstract

The invention relates to a lubrication system for a bearing of a machine. The system comprises an oil tank, and an oil supply pipe for supplying the lubricant oil from the oil tank to the bearing. The system further comprises an outlet pipe for guiding the lubricant oil from the bearing substantially vertically downward so that an outlet pipe oil level may be formed in the outlet pipe. The system further comprises an oil returning mother pipe for guiding the lubricant oil from the outlet pipe to the tank. The oil returning mother pipe includes a substantially horizontal part and a weir or a flow resistance disposed close to the tank so that substantially all portion of the substantially horizontal part may be maintained full of lubricant oil.

Description

technical field [0001] The present invention generally relates to a lubricating system, in particular, the present invention relates to a lubricating system used in bearings of a rotating machine such as a turbine generator and a method for retrofitting an existing lubricating system. Background technique [0002] In the general lubrication system applied to the bearings of rotating machines such as turbine generators, the lubricating oil supplied to the bearings is returned to the oil tank through the oil return main pipe, which is inclined downward so that the oil can flow smoothly Return to the oil tank and prevent oil from spraying out of the bearings. Then, a free liquid surface of liquid oil is formed in the pipe, and the oil is recovered into the oil tank, so it is possible to prevent a fire caused by the oil being sprayed out. Furthermore, due to the inclined placement of the tubes, an air layer is formed above said free liquid surface, which connects the turbine be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/18F01D25/20F16N7/38
CPCF01D25/20F01D25/16F01D25/18F01M11/08
Inventor 野中利昭中原正彦村上义男
Owner KK TOSHIBA