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Working method of axial flow compressor front-section static lubricating oil sealing test device

A technology of axial flow compressor and working method, which is applied in the direction of mechanical equipment, machine/engine, pump control, etc. It can solve the problems of changing the surface roughness of the blade, reducing the efficiency of the compressor, and exceeding the standard of lubricating oil leakage, etc., and achieves a simple test process Easy to operate, obvious test effect, simple and easy tooling

Active Publication Date: 2021-02-12
CHINA HANGFA CHANGZHOU LANXIANG MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the aero-engine compressor is working, if the seal of the lubricating oil sealing system is not ideal, it will cause excessive lubricating oil leakage, directly affecting the cooling effect of the bearing, and the lubricating oil leaking into the engine flow channel will also adhere to dust, carbon deposits and other substances. On the blade, change the roughness of the blade surface and reduce the efficiency of the compressor

Method used

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  • Working method of axial flow compressor front-section static lubricating oil sealing test device
  • Working method of axial flow compressor front-section static lubricating oil sealing test device
  • Working method of axial flow compressor front-section static lubricating oil sealing test device

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Experimental program
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Effect test

Embodiment 1

[0027] The static lubricating oil seal test device at the front section of the axial flow compressor of this embodiment includes a detected device and a detection device, such as figure 2 with image 3 As shown, the tested device includes an air inlet casing 4, a bearing 6, a bearing seat 7, an axial flow rotor 5, a sealing box cover 8, and a graphite sealing box 86, and the air inlet casing 4 includes an inner ring body arranged laterally 47 and the outer ring body 48, the inner ring body 47 is placed in the outer ring body 48, the top of the outer ring body 48 is provided with the upper part 41 of the intake casing, the bottom end of the outer ring body 48 is provided with the intake casing base 42, and the inner ring body An upper support plate 43, a lower support plate 45, a left support plate 44 and a right support plate 46 are arranged radially between the body 47 and the outer ring body 48, and a large-diameter oil tank with a diameter of 16mm is arranged radially on t...

Embodiment 2

[0034] The above-mentioned test method for the static lubricating oil seal test device at the front section of the axial flow compressor includes the following steps:

[0035] (A) Preparatory work before the test: After the front section of the compressor is assembled, turn it over 90 degrees so that the opening of the inner cavity 3 of the inner ring body 47 faces upward, and plug the inner hole 59 of the compressor shaft 52 with a plug 56, and turn it toward the inner cavity. 3. Pour in lubricating oil, and the bearing 6 can be submerged on the lubricating oil surface; plug the large-diameter oil passage 35 with a large plug 34, and plug the small-diameter oil passage 36 with a small plug 31; the cover plate 2 seals the inner cavity 3 One end of the ventilation pipe 13 is tightened on the nozzle 21, and the other end is connected to the secondary pressure reducing valve 12 and the primary pressure reducing valve 11 and finally received in the air source 1; the bleed air press...

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Abstract

The invention relates to a working method of an axial flow compressor front-section static lubricating oil sealing test device. The axial flow compressor front-section static lubricating oil sealing test device comprises a detected device and a detection device, wherein the detected device comprises an air inlet casing, an axial flow rotor, a bearing, a bearing seat, a sealing box cover, a friction ring and a graphite sealing box; the detection device comprises an air source, a ventilation pipe, a cover plate, a filler neck, a plug and oil absorption paper; the cover plate is used for sealingthe end part of an inner cavity of an inner ring body; the plug is used for sealing an oil path; one end of the filler neck communicates with the air source through the ventilation pipe; the other endof the filler neck penetrates through the cover plate to communicate with the inner cavity and is used for filling gas into the inner cavity; the oil absorption paper is arranged at the outer side end of the sealing box cover; when the axial flow compressor front-section static lubricating oil sealing test device is used, a compressor shaft is vertical and an opening of the inner cavity is arranged upwards; lubricating oil is injected into the inner cavity of the inner ring body and the gas is injected into the inner cavity; and whether leaked lubricating oil exists on the oil absorption paper or not is observed.

Description

technical field [0001] The invention relates to the technical field of aero-engine auxiliary equipment, in particular to a static lubricating oil sealing test method at the front section of an axial flow compressor. Background technique [0002] With the application and rapid development of aero-engines from the invention to today, various technologies are constantly improving and perfecting, and the sealing system has always been an important problem faced by researchers. The two ends of the compressor shaft in the aero-engine are fixed by bearings, and the bearings are cooled by lubricating oil during operation. The lubricating oil used to cool the bearing is sealed through the graphite end face seal structure, and the installation end face of the bearing seat has a rubber ring auxiliary seal to prevent oil leakage. [0003] When the aero-engine compressor is working, if the seal of the lubricating oil sealing system is not ideal, it will cause excessive lubricating oil l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00
CPCF04D27/001
Inventor 李文凯陈少俊刘彦雪李伟超陆慧华
Owner CHINA HANGFA CHANGZHOU LANXIANG MACHINERY CO LTD