Vertical type small-flow high-pressure ratio centrifugal compressor
A centrifugal compressor, small flow technology, applied in the field of compressors, can solve problems such as it is difficult to meet the needs of use, and achieve the effects of saving installation space, reducing construction volume, and strong structural rigidity
Active Publication Date: 2015-10-07
BEIJING AEROSPACE PETROCHEM TECH & EQUIP ENG CORP LTD
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Problems solved by technology
Existing compressors are difficult to meet the needs of use
Method used
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[0012] The vertical low-flow high-pressure ratio centrifugal compressor of the present invention will be further described below with reference to the accompanying drawings and embodiments.
[0013] like figure 1 As shown in the figure, the vertical small flow high pressure ratio centrifugal compressor includes a drive shaft 1, an upper shaft sleeve 2, a sealing fastening bolt 3, a compressor cover 4, a diffuser cover plate 5, and a composite diffuser 6, Impeller locking pad 7, shaft end guide cone 8, connecting bolt 9, impeller 10, compressor casing 11, sealing washer 12, stud bolt 13, lower shaft sleeve 14, sealing static ring 15, sealing dynamic ring 16, etc. .
[0014] The compressor is generally installed vertically on a radially split centerline. The compressor shell 11 is a cylinder, the inlet and outlet flanges of the compressor are symmetrically arranged on the same horizontal line, and the outer reinforcing ribs are high-strength structures.
[0015] The compressor...
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The invention provides a vertical type small-flow high-pressure ratio centrifugal compressor. A compressor rotor is vertically arranged in the center of a cavity formed by a compressor shell and a compressor cover arranged on the upper portion of the compressor shell; a drive shaft is perpendicular to the center of the compressor, a shaft end guiding cone and an impeller are fixed on the drive shaft through a connecting bolt, and locking is achieved through an impeller lock pad; a combined type diffuser is composed of a blade diffuser and an Archimedes spiral progressive diffuser, and a diversion channel at an impeller inlet portion is formed by the lower portion of the combined type diffuser and the shaft end guiding cone; a diffuser cover plate is located on the upper portion of the impeller and equipped on the combined difffuser to form a working space of the impeller; seal static rings are installed on the two sides of the center of the compressor cover through a sealing fastening bolt; a seal dynamic ring is fixed on the drive shaft through an upper shaft sleeve and a lower shaft sleeve. According to the vertical type small-flow high-pressure ratio centrifugal compressor, vertical installation is adopted, the structure is compact, and the space is saved; the whole unit is completely closed, needed installation space is small, the installation space can be saved, and the basic construction capacity is reduced.
Description
technical field [0001] The invention relates to a compressor, in particular to a vertical centrifugal compressor with small flow and high pressure ratio, which is suitable for use in explosion-proof places of petrochemical industry. Background technique [0002] Volumetric and rotary compressors are usually used for small flow and high pressure ratio compressors. However, volumetric and rotary compressors have complex structures, many wearing parts, occupy a large area, and require a large amount of maintenance work; especially, there are pulses at the outlet and running parts The required lubricating oil is easily mixed into the compressed gas and cannot be used for high temperature gas, which has great limitations. The centrifugal compressor has the advantages of high speed, simple structure, no oil in the compressed gas, continuous and stable gas supply, no circulation pulsation, reliable operation, long continuous operation period and low maintenance cost. However, the ...
Claims
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IPC IPC(8): F04D17/10F04D29/44F04D29/12
CPCF04D17/10
Inventor 王修宝窦英元程武敏戴侃王伟任轶丁玲
Owner BEIJING AEROSPACE PETROCHEM TECH & EQUIP ENG CORP LTD