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Seal performance detecting method and device for double end face dry gas seal of centrifugal compressor

A centrifugal compressor and dry gas sealing technology, which is applied to parts, mechanical equipment, machines/engines, etc. of pumping devices for elastic fluids, and can solve problems such as no effective detection means

Active Publication Date: 2019-01-04
SHENYANG BLOWER WORKS GROUP CORP
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Problems solved by technology

[0005] In view of this, this application provides a method and device for detecting the sealing performance of the double-end dry gas seal of the centrifugal compressor. Sealing performance, there is no effective detection method at present

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  • Seal performance detecting method and device for double end face dry gas seal of centrifugal compressor
  • Seal performance detecting method and device for double end face dry gas seal of centrifugal compressor
  • Seal performance detecting method and device for double end face dry gas seal of centrifugal compressor

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Embodiment Construction

[0027] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0028] Aiming at the problem that there is no effective detection method for the overall gas sealing performance of the centrifugal compressor unit after the double-end dry gas seal is assembled with the centrifugal compressor, this embodiment provides a double-end dry gas seal for the centrifugal compressor. The sealing performance testing method of the seal is combined with the static gas for dry gas sealing performance testing to...

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Abstract

The invention discloses a seal performance detecting method and device for double end face dry gas seal of a centrifugal compressor and relates to the technical field of centrifugal compressors. By the adoption of the seal performance detecting method and device for the double end face dry gas seal of the centrifugal compressor, it can be achieved that after the double end face dry gas seal and the centrifugal compressor are assembled together, the overall gas seal performance of the centrifugal compressor set is detected. The seal performance detecting method comprises the steps that after the double end face dry gas seal and the centrifugal compressor are assembled together, seal gas is fed into a seal gas area of the dry gas seal, isolating gas is fed into an isolating gas area, and thepressure of the isolating gas and the pressure of the seal gas meet the pressure standards of normal operation of the double end face dry gas seal of the centrifugal compressor; by measuring the pipeline pressures and the gas inflows of the seal gas area and the isolating gas area, in combination with the gas displacement of the double end face dry gas seal, the seal performance of the double endface dry gas seal of the centrifugal compressor is ensured. The seal performance detecting method and device for the double end face dry gas seal of the centrifugal compressor is suitable for seal performance detection of the double end face dry gas seal of the centrifugal compressor.

Description

technical field [0001] The present application relates to the technical field of centrifugal compressors, in particular to a method and device for detecting the sealing performance of dry gas seals on both ends of centrifugal compressors. Background technique [0002] Centrifugal compressor is an important strategic equipment, which is widely used in chemical processes such as oil refining, fertilizer, refrigeration, liquefied natural gas (LNG) and so on. Common working media are: ammonia, propylene, natural gas, petroleum-rich gas, carbon monoxide, methanol, ethylene, hydrogen, etc., many of which are flammable, explosive, toxic, and harmful. [0003] In order to ensure the safety of the centrifugal compressor, a double-face dry gas seal is commonly used as the shaft end seal to ensure that the working medium of the unit will not leak outside the unit, so as to avoid potential safety hazards and environmental pollution. This kind of seal is used as a shaft end seal to prev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00F04D29/00F04D29/08
CPCF04D27/001F04D29/002F04D29/083
Inventor 亢天明汪创华孙家姝陈久国
Owner SHENYANG BLOWER WORKS GROUP CORP
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