CN101101009A - Centrifugal compressor ammonia compressor rapid vibration-prevention method and device - Google Patents
Centrifugal compressor ammonia compressor rapid vibration-prevention method and device Download PDFInfo
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- CN101101009A CN101101009A CNA2007100496238A CN200710049623A CN101101009A CN 101101009 A CN101101009 A CN 101101009A CN A2007100496238 A CNA2007100496238 A CN A2007100496238A CN 200710049623 A CN200710049623 A CN 200710049623A CN 101101009 A CN101101009 A CN 101101009A
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- ammonia compressor
- connecting tube
- rapid vibration
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Abstract
This invention discloses centrifuge type ammonia compressor turbulence vibration prevention method and its device. The ammonia gas at ammonia compressor outlet opening is fed back to ammonia compressor inlet opening and mix with compressed ammonia gas. The mixed flow rate is larger than rated minimal inlet opening flow rate of ammonia compressor. Return pipe can be arranged out of any stage of cylinder outlet opening of ammonia compressor. This invention can protect compressor rotor.
Description
Technical field
The present invention relates to centrifugal ammonia compressor, especially its anti-surging method.
Background technique
Maybe needing the tooling that freezes at synthetic ammonia, generally is refrigeration agent with ammonia, adopts centrifugal compressor to freeze.Surging if inlet flow rate is lower than specified minimum, will take place in centrifugal compressor when operation, will damage machine when serious.For this reason, must prevent the generation of machine surging.
The centrifugal ammonia compressor in home and abroad all is that liquefied ammonia is directly added compressor inlet, and is compressed gas and mixes, and liquefied ammonia evaporates into gas phase, and volumetric expansion makes inlet flow rate be higher than specified minimum, in case surging takes place.But if control is improper, adding liquefied ammonia is too much, and the liquefied ammonia volatilization is insufficient, forms gas-liquid two-phase flow easily in compressor inlet, because liquid phase medium is incompressible, will cause compressor power consumption height, also can damage compressor drum when serious, jeopardizes device security.
Summary of the invention
Purpose of the present invention provides a kind of method and device that can effectively prevent centrifugal ammonia compressor surging.This method is without liquefied ammonia, also the negative consequence of just not bringing thus.
Technical solution of the present invention is as follows:
A kind of centrifugal compressor ammonia compressor rapid vibration-prevention method feeds back to the ammonia compressor inlet with the gas ammonia of ammonia compressor outlet, and is compressed gas ammonia and mixes, and mixed traffic is greater than the specified minimum inlet flow rate value of ammonia compressor.
A kind of centrifugal compressor ammonia compressor rapid vibration-prevention device comprises connecting tube, and the end of this connecting tube connects the import of ammonia compressor, and the other end connects the outlet of ammonia compressor.
The other end of described connecting tube connects the one-level compression cylinder outlet of ammonia compressor.
The other end of described connecting tube connects the secondary compression cylinder outlet of ammonia compressor.
The other end of described connecting tube connects three grades of compression cylinder outlets of ammonia compressor.
Be in series with cooler on described connecting tube.
Be in series with gas-liquid separator on described connecting tube.
Beneficial effect of the present invention:
1. will prevent that surging changes the backflow gas ammonia into liquefied ammonia, and avoid the ammonia compressor import to have the possibility of two-phase fluid, both prevent surging, and protect rotor again effectively, and damage a rotor, expense is more than 1,000,000 yuan.
2. will prevent that surging changes the backflow gas ammonia into liquefied ammonia, and reduce loss of refrigeration capacity, the refrigeration power consumption reduces about 10%.
3. reflux with three grades of outlets of ammonia compressor gas ammonia, source of the gas is stable, and is easy to adjust.
4. modifying device is simple, less investment.
Description of drawings
Fig. 1 is the technological process and the structured flowchart of an example of the present invention.
Embodiment
Outstanding feature of the present invention is to substitute liquefied ammonia as centrifugal ammonia compressor inlet flow rate supplementary source, in case surging with gas ammonia.Concrete technological means is: draw a by-pass line from the ammonia compressor outlet line and be communicated with the ammonia compressor import, the gas ammonia after the compression is fed back to the ammonia compressor import.
By-pass line can be drawn from one section 2 outlet of ammonia compressor, also can draw from two sections 4 or three sections 5 outlets of ammonia compressor, but preferably draw from the outlet of three sections coolers 5, as shown in Figure 1.Like this, both can provide gas ammonia, can alleviate the load of condenser 7 without the liquefied ammonia in the liquid ammonia storage tank 8 as ammonia compressor inlet flow rate supplementary source again, reduce loss of refrigeration capacity to the ammonia compressor import.In addition, preferably set up gas-liquid separator 3 on the by-pass line, the liquefied ammonia of making provision against emergencies returns ammonia compressor; Also valve 1 should be set, be used to regulate backflow gas ammonia flow.
Claims (7)
1. centrifugal compressor ammonia compressor rapid vibration-prevention method is characterized in that: the gas ammonia of ammonia compressor outlet is fed back to the ammonia compressor inlet, and be compressed gas ammonia and mix, mixed traffic is greater than the specified minimum inlet flow rate value of ammonia compressor.
2. a centrifugal compressor ammonia compressor rapid vibration-prevention device is characterized in that: comprise connecting tube, the import of the end connection ammonia compressor of this connecting tube, the outlet of the other end connection ammonia compressor.
3. centrifugal compressor ammonia compressor rapid vibration-prevention device according to claim 2 is characterized in that: the other end of described connecting tube connects the one-level compression cylinder outlet of ammonia compressor.
4. centrifugal compressor ammonia compressor rapid vibration-prevention device according to claim 2 is characterized in that: the other end of described connecting tube connects the secondary compression cylinder outlet of ammonia compressor.
5. centrifugal compressor ammonia compressor rapid vibration-prevention device according to claim 2 is characterized in that: the other end of described connecting tube connects three grades of compression cylinder outlets of ammonia compressor.
6. centrifugal compressor ammonia compressor rapid vibration-prevention device according to claim 2 is characterized in that: be in series with cooler on described connecting tube.
7. centrifugal compressor ammonia compressor rapid vibration-prevention device according to claim 6 is characterized in that: be in series with gas-liquid separator on described connecting tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100496238A CN101101009A (en) | 2007-07-30 | 2007-07-30 | Centrifugal compressor ammonia compressor rapid vibration-prevention method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100496238A CN101101009A (en) | 2007-07-30 | 2007-07-30 | Centrifugal compressor ammonia compressor rapid vibration-prevention method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101101009A true CN101101009A (en) | 2008-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100496238A Pending CN101101009A (en) | 2007-07-30 | 2007-07-30 | Centrifugal compressor ammonia compressor rapid vibration-prevention method and device |
Country Status (1)
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| CN (1) | CN101101009A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214008A (en) * | 2013-03-13 | 2013-07-24 | 贵州天福化工有限责任公司 | Ammonia compressor starting method with reduced ammonia consumption |
| CN103727710A (en) * | 2013-12-26 | 2014-04-16 | 河南开祥精细化工有限公司 | Liquid ammonia transfer system, liquid ammonia transfer method and ammonia refrigeration system of centrifugal ammonia compressor |
| CN104567064A (en) * | 2015-01-06 | 2015-04-29 | 东华工程科技股份有限公司 | Energy-saving compression refrigeration method |
| CN104729132A (en) * | 2015-03-23 | 2015-06-24 | 七台河宝泰隆煤化工股份有限公司 | Compression refrigeration device and method used for compression refrigeration by using same |
| CN105443402A (en) * | 2015-11-27 | 2016-03-30 | 安徽六国化工股份有限公司 | Centrifugal ammonia compressor unit with dual-cylinder compression three-section air inlet manner |
| CN105571182A (en) * | 2016-02-04 | 2016-05-11 | 河南心连心化肥有限公司 | Ammonia compressor energy saving device and energy saving control method thereof |
| CN104501443B (en) * | 2014-12-10 | 2016-08-24 | 中石化宁波工程有限公司 | A kind of ammonia flash distillation refrigeration process |
-
2007
- 2007-07-30 CN CNA2007100496238A patent/CN101101009A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214008A (en) * | 2013-03-13 | 2013-07-24 | 贵州天福化工有限责任公司 | Ammonia compressor starting method with reduced ammonia consumption |
| CN103214008B (en) * | 2013-03-13 | 2015-04-01 | 贵州天福化工有限责任公司 | Ammonia compressor starting method with reduced ammonia consumption |
| CN103727710A (en) * | 2013-12-26 | 2014-04-16 | 河南开祥精细化工有限公司 | Liquid ammonia transfer system, liquid ammonia transfer method and ammonia refrigeration system of centrifugal ammonia compressor |
| CN103727710B (en) * | 2013-12-26 | 2016-05-18 | 河南开祥精细化工有限公司 | Liquefied ammonia induction system, method and the ammonia refrigeration system of centrifugal ammonia compressor |
| CN104501443B (en) * | 2014-12-10 | 2016-08-24 | 中石化宁波工程有限公司 | A kind of ammonia flash distillation refrigeration process |
| CN104567064A (en) * | 2015-01-06 | 2015-04-29 | 东华工程科技股份有限公司 | Energy-saving compression refrigeration method |
| CN104729132A (en) * | 2015-03-23 | 2015-06-24 | 七台河宝泰隆煤化工股份有限公司 | Compression refrigeration device and method used for compression refrigeration by using same |
| CN105443402A (en) * | 2015-11-27 | 2016-03-30 | 安徽六国化工股份有限公司 | Centrifugal ammonia compressor unit with dual-cylinder compression three-section air inlet manner |
| CN105571182A (en) * | 2016-02-04 | 2016-05-11 | 河南心连心化肥有限公司 | Ammonia compressor energy saving device and energy saving control method thereof |
| CN105571182B (en) * | 2016-02-04 | 2017-11-14 | 河南心连心化肥有限公司 | A kind of ammonia compressor energy saver and its energy-saving control method |
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