CN103883566A - Anti-surge control system of centrifugal compressor - Google Patents
Anti-surge control system of centrifugal compressor Download PDFInfo
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- CN103883566A CN103883566A CN201410084566.7A CN201410084566A CN103883566A CN 103883566 A CN103883566 A CN 103883566A CN 201410084566 A CN201410084566 A CN 201410084566A CN 103883566 A CN103883566 A CN 103883566A
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- centrifugal compressor
- compressor
- control system
- driving
- surge
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Abstract
The invention provides an anti-surge control system of a centrifugal compressor. The anti-surge control system of the centrifugal compressor comprises a driving motor, a transmission mechanism, a sliding ring and the centrifugal compressor. The anti-surge control system of the centrifugal compressor is characterized in that a driving shaft of the driving motor stretches into the centrifugal compressor and is connected with the sliding ring through the transmission mechanism, the sliding ring horizontally stretches into a fixed pressure expander located at an outlet of the impeller of the compressor under the driving of the transmission mechanism, and a partial throttling area is formed in the fixed pressure expander. According to the anti-surge control system of the centrifugal compressor, the width of the pressure expander is adjusted through the adjustable sliding ring in the fixed pressure expander located at outlet of the impeller of the compressor, and as a result, the partial throttling area is formed in the outlet of the impeller, and the backpressure of the outlet of the impeller is increased. In this way, the actions of the sliding ring are adjusted in real time when a control program is used in cooperation with operation of the compressor, the centrifugal compressor can be effectively prevented from surging under the small flow and high pressure ratio condition, and the working efficiency of the compressor is improved.
Description
Technical field
The present invention relates to a kind of Anti-surge System of Centrifugal Compressor.
Background technique
In compressor operating, a phenomenon is exactly surge.Prevent that surge from being extremely important problem in compressor operating.Many fact proved, compressor lot of accident is all relevant with surge.So surge can cause great harm, be because air-flow produces strong reciprocating impulse, impact compress machine rotor and miscellaneous part back and forth in the time of surge; The strong irregular concussion of air-flow causes unit judder, thereby causes various serious consequences.Surge meeting causes rotor permanent bending of rotor; Bad seals, causes serious gas leakage, leakage of oil; The appearance of surge gently makes compressor shutdown, and breaks in production process causes economic loss, heavy cause compressor blade damage, the personnel that cause injure; Surge increases end thrust, burns out thrust bearing shell; Destroy centering and installation quality, make vibration aggravation; Strong vibration can cause instrument malfunction; Serious lasting surge can make rotor and stationary part bump against, main shaft and dividing plate fracture, and even whole compressor is scrapped.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of Anti-surge System of Centrifugal Compressor, can avoid compressor to enter surging condition, improve the working efficiency of compressor simultaneously.。
Technological scheme of the present invention is:
A kind of Anti-surge System of Centrifugal Compressor, comprise drive motor, driving mechanism, slip ring, centrifugal compressor, it is characterized in that, the live axle of described drive motor puts in centrifugal compressor by driving mechanism connection slip ring, slip ring laterally puts in the stationary diffuser of the impeller outlet that is arranged in compressor under the drive of driving mechanism, forming section throttling band in stationary diffuser.
Described driving mechanism is to be made up of driving ring and linkage mechanism, and the live axle of described drive motor connects driving ring, and driving ring is again by linkage mechanism connection slip ring.
Described drive motor is controlled by decentralized control system (DCS), and the mathematical model of described decentralized control system is: h
s/ p
s%=f(Q).
The invention has the beneficial effects as follows:
The present invention adopts adjustable slip ring to regulate Diffuser width by the stationary diffuser middle part of the impeller outlet at compressor, thereby in impeller outlet forming section choke zone, improves impeller outlet back pressure.Coordinate compressor operating to reconcile in real time the action of slip ring by control program like this, can effectively prevent that centrifugal compressor from surge occurring the in the situation that of small flow, high pressure ratio, improve the working efficiency of compressor.
Brief description of the drawings
Fig. 1 is the structural representation of antisurge control system of the present invention;
In figure: 1-drive motor 2-driving ring 3-linkage mechanism 4-slip ring 5-stationary diffuser 6-impeller 7-centrifugal compressor housing.
Embodiment
As shown in Figure 1, a kind of Anti-surge System of Centrifugal Compressor of the present invention, comprise drive motor 1, driving mechanism, slip ring 4, centrifugal compressor, it is characterized in that, the live axle of described drive motor 1 puts in centrifugal compressor by driving mechanism connection slip ring 4, slip ring 4 laterally puts in and is arranged in the stationary diffuser 5 that the impeller 6 of compressor exports, forming section throttling band in stationary diffuser 5 under the drive of driving mechanism.
Described driving mechanism is to be made up of driving ring 2 and linkage mechanism 3, and the live axle of described drive motor 1 connects driving ring 2, and driving ring 2 is again by linkage mechanism 3 connection slip rings 4.
Described drive motor is controlled by decentralized control system (DCS), and the mathematical model of described decentralized control system is: h
s/ p
s%=f(Q).
Claims (3)
1. an Anti-surge System of Centrifugal Compressor, comprise drive motor, driving mechanism, slip ring, centrifugal compressor, it is characterized in that, the live axle of described drive motor puts in centrifugal compressor by driving mechanism connection slip ring, slip ring laterally puts in the stationary diffuser of the impeller outlet that is arranged in compressor under the drive of driving mechanism, forming section throttling band in stationary diffuser.
2. a kind of Anti-surge System of Centrifugal Compressor according to claim 1, it is characterized in that, described driving mechanism is to be made up of driving ring and linkage mechanism, and the live axle of described drive motor connects driving ring, and driving ring is again by linkage mechanism connection slip ring.
3. a kind of Anti-surge System of Centrifugal Compressor according to claim 1, is characterized in that, described drive motor is controlled by decentralized control system (DCS), and the mathematical model of described decentralized control system is: h
s/ p
s%=f(Q).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084566.7A CN103883566A (en) | 2014-03-07 | 2014-03-07 | Anti-surge control system of centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084566.7A CN103883566A (en) | 2014-03-07 | 2014-03-07 | Anti-surge control system of centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103883566A true CN103883566A (en) | 2014-06-25 |
Family
ID=50952635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410084566.7A Pending CN103883566A (en) | 2014-03-07 | 2014-03-07 | Anti-surge control system of centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103883566A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131999A (en) * | 2014-07-23 | 2014-11-05 | 珠海格力电器股份有限公司 | Centrifugal compressor's regulation structure and centrifugal compressor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2109990C1 (en) * | 1996-04-25 | 1998-04-27 | Юрий Иванович Журавлев | Centrifugal compressor |
| RU2112154C1 (en) * | 1996-08-21 | 1998-05-27 | Григорий Григорьевич Петросян | Centrifugal compressor adjustable diffuser |
| CN2536821Y (en) * | 2001-12-06 | 2003-02-19 | 重庆通用工业(集团)有限责任公司 | Adjustable guide blade and diffuser linkage device for inlet of centrifugal refrigerating compressor |
| US20080232950A1 (en) * | 2007-03-23 | 2008-09-25 | Johnson Controls Technology Company | Method for detecting rotating stall in a compressor |
| CN201159212Y (en) * | 2008-02-14 | 2008-12-03 | 文志成 | Surge-proof mechanism of centrifugal compressor |
| KR20110115816A (en) * | 2010-04-16 | 2011-10-24 | 삼성테크윈 주식회사 | Centrifugal compressor |
-
2014
- 2014-03-07 CN CN201410084566.7A patent/CN103883566A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2109990C1 (en) * | 1996-04-25 | 1998-04-27 | Юрий Иванович Журавлев | Centrifugal compressor |
| RU2112154C1 (en) * | 1996-08-21 | 1998-05-27 | Григорий Григорьевич Петросян | Centrifugal compressor adjustable diffuser |
| CN2536821Y (en) * | 2001-12-06 | 2003-02-19 | 重庆通用工业(集团)有限责任公司 | Adjustable guide blade and diffuser linkage device for inlet of centrifugal refrigerating compressor |
| US20080232950A1 (en) * | 2007-03-23 | 2008-09-25 | Johnson Controls Technology Company | Method for detecting rotating stall in a compressor |
| CN201159212Y (en) * | 2008-02-14 | 2008-12-03 | 文志成 | Surge-proof mechanism of centrifugal compressor |
| KR20110115816A (en) * | 2010-04-16 | 2011-10-24 | 삼성테크윈 주식회사 | Centrifugal compressor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131999A (en) * | 2014-07-23 | 2014-11-05 | 珠海格力电器股份有限公司 | Centrifugal compressor's regulation structure and centrifugal compressor |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140625 |
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| RJ01 | Rejection of invention patent application after publication |