CN101691870A - Fan switching method - Google Patents
Fan switching method Download PDFInfo
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- CN101691870A CN101691870A CN200910019507A CN200910019507A CN101691870A CN 101691870 A CN101691870 A CN 101691870A CN 200910019507 A CN200910019507 A CN 200910019507A CN 200910019507 A CN200910019507 A CN 200910019507A CN 101691870 A CN101691870 A CN 101691870A
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- main frame
- machine
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Abstract
The invention discloses a fan switching method. A primary machine circuit and a secondary machine circuit supply air to a regenerator in a parallel mode. The connection mode of the primary machine circuit is as follows: the air enters the primary machine from an inlet valve of the primary machine, and the air is divided into two branches after being pressurized by the primary machine, one branch of the air enters the regenerator through a check valve of the primary machine and the other branch of the air is communicated with the air through an antisurge valve of the primary machine; the connection mode of the secondary machine circuit is the same as that of the primary machine circuit. First the air is supplied from the secondary machine to the regenerator, after the primary machine is started, the air pressure is gradually increased as high as that in the secondary machine, the check valve of the primary machine is opened, at the moment, the antisurge valve of the primary machine and an antisurge valve of the secondary machine are simultaneously switched from the automatic control states to the manual control states, the antisurge valve of the primary machine is gradually closed until the antisurge valve of the primary machine is totally closed, meanwhile, the antisurge valve of the secondary machine is gradually opened until the antisurge valve of the secondary machine is totally opened, and a check valve of the secondary machine is closed. The method eliminates the problem that inflexible action and easy clamping stagnation caused by great difference between front back pressure and rear back pressure during automatic control of the antisurge valves lead to pressure fluctuation, controls the air volume fluctuation within the allowable range, keeps the operation steady and realizes non-disturbance switching.
Description
Technical field
The present invention relates to a kind of fan switching method, especially two different air quantity fan switching methods.
Background technique
The fan design of inventor company be main air blower (calling main frame in the following text) and standby fan (calling standby host in the following text) be nominal air delivery 680Nm
3/ min, maximum quantity of wind 800Nm
3/ min.The back promotes because of production capacity, carries out under the situation that does not change main equipment, and host reform is maximum quantity of wind 1280Nm
3/ min, standby host is constant.Use standby host when going into operation, switch to main frame after normal, handover operation is finished on DCS, two people operate the anti-surge valve switches, difference owing to operation pressure, air quantity behind two host reforms because the anti-surge valve events that the front back pressure and rear back pressure gap causes greatly is dumb, easily produces anti-surge valve clamping stagnation problem during switching, the build-up of pressure fluctuation influences ordinary production.
Summary of the invention
The technical problem to be solved in the present invention be to overcome the anti-surge valve events of conventional fan switching method dumb, easily produce the problem of anti-surge valve clamping stagnation, realize that unperturbed switches.
For achieving the above object, the invention provides a kind of fan switching method, main frame loop and standby host loop with parallel way to the regenerator air feed, wherein the main frame loop is, atmosphere enters main frame by the main frame inlet valve, after the pressurization of main frame, be divided into two branch roads, the one tunnel through the main frame safety check to regenerator, another road is through the logical atmosphere of main frame anti-surge valve; The standby host loop is identical with main frame loop Placement; Earlier by standby host to the regenerator air feed, behind the host-initiated, the blast that progressively raises is identical with standby host, the main frame safety check is opened, and cut main frame anti-surge valve and standby host anti-surge valve to manual state of a control by automatic control state this moment simultaneously, progressively turns down main frame anti-surge valve, until closing, progressively amplify simultaneously standby host anti-surge valve, until decontroling fully, with the standby host closure of check ring.
Compared with prior art, the present invention has eliminated the problem of dumb, the easy clamping stagnation build-up of pressure fluctuation of the anti-surge valve events that causes greatly because of the front back pressure and rear back pressure gap when anti-surge valve is controlled automatically, the air quantity fluctuation is controlled within the allowed band, and it is stable to keep-up pressure, smooth operation.
Description of drawings
Fig. 1 is that main frame and standby host switch schematic representation.
Embodiment
Below in conjunction with the drawings and specific embodiments technological scheme of the present invention being described in detail, with purpose, scheme and the effect of further understanding the present invention, but is not as the restriction to invention claims protection domain.
As described in Figure 1, main frame loop and standby host loop with parallel way to the regenerator air feed.Wherein, the main frame loop is: atmosphere enters main frame by the main frame inlet valve, is divided into two branch roads after the pressurization of main frame, the one tunnel through the main frame safety check to regenerator, another road is through the logical atmosphere of main frame anti-surge valve; The standby host loop is identical with main frame loop Placement.
Use standby host when going into operation, switch to main frame after normal.Earlier by standby host to the regenerator air feed, behind the host-initiated, the blast that progressively raises is identical with standby host, the main frame safety check is opened, and cut main frame anti-surge valve and standby host anti-surge valve to manual state of a control by automatic control state this moment simultaneously, progressively turns down main frame anti-surge valve, until closing, progressively amplify standby host anti-surge valve, until decontroling fully, with the standby host closure of check ring.
By to experiment of the present invention, situation is as follows: main frame maximum quantity of wind 1280Nm
3/ min, standby host maximum quantity of wind 800Nm
3/ min.Undertaken switching between active and standby machine by said method, the concrete parameter that draws is as follows: advance regenerator air quantity 750Nm
3/ min, main frame outlet pressure 0.18MPa, inlet air quantity 1083Nm
3/ min, standby host outlet pressure 0.18MPa, inlet air quantity 917Nm
3/ min by manual control anti-surge valve, advances regenerator air quantity wave range at 750Nm
3/ min～767Nm
3/ min, regenerator device operation ripple disable.The present invention draws by the practice utilization, when active and standby blower fan switches, the anti-surge valve events that the front back pressure and rear back pressure gap causes greatly in the time of can eliminating the anti-surge valve and control automatically is dumb, the easy clamping stagnation problem of switch, keep rate of discharge, pressure stability, smooth operation helps the smooth running of regenerator device, minimizing realizes that to the operation hidden danger of regenerator device unperturbed switches.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (2)
1. fan switching method, main frame loop and standby host loop with parallel way to the regenerator air feed, wherein the main frame loop is, atmosphere enters main frame by the main frame inlet valve, after the pressurization of main frame, be divided into two branch roads, one the tunnel through the main frame safety check to regenerator, another road is through the logical atmosphere of main frame anti-surge valve; The standby host loop is identical with main frame loop Placement; Earlier by standby host to the regenerator air feed, behind the host-initiated, the blast that progressively raises is identical with standby host, the main frame safety check is opened, and cut main frame anti-surge valve and standby host anti-surge valve to manual state of a control by automatic control state this moment simultaneously, progressively turns down main frame anti-surge valve, until closing, progressively amplify simultaneously standby host anti-surge valve, until decontroling fully, with the standby host closure of check ring.
2. fan switching method according to claim 1 is characterized in that: main frame anti-surge valve is beaten to automatic control state by manual state of a control after switching is finished again, realized control automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910019507A CN101691870A (en) | 2009-09-29 | 2009-09-29 | Fan switching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910019507A CN101691870A (en) | 2009-09-29 | 2009-09-29 | Fan switching method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101691870A true CN101691870A (en) | 2010-04-07 |
Family
ID=42080579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910019507A Pending CN101691870A (en) | 2009-09-29 | 2009-09-29 | Fan switching method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101691870A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265666A (en) * | 2014-08-29 | 2015-01-07 | 武汉钢铁(集团)公司 | Method for preventing surging of fans |
| CN109798260A (en) * | 2019-01-15 | 2019-05-24 | 临涣焦化股份有限公司 | A kind of gas-blowing engine device |
| CN110529417A (en) * | 2019-08-15 | 2019-12-03 | 西安陕鼓动力股份有限公司 | A kind of automatic on-line of multi-machine parallel connection Systems of Centrifugal Compressor Unit cuts machine operating method |
| CN112503566A (en) * | 2021-02-04 | 2021-03-16 | 亿昇(天津)科技有限公司 | Fan switching method |
| CN113448295A (en) * | 2021-05-14 | 2021-09-28 | 郑州旭飞光电科技有限公司 | Method for switching induced draft fan, processor and storage medium |
| CN115013292A (en) * | 2022-06-28 | 2022-09-06 | 浙江中控技术股份有限公司 | Undisturbed switching control method for parallel compressors |
| CN115013292B (en) * | 2022-06-28 | 2024-05-14 | 中控技术股份有限公司 | Undisturbed switching control method for parallel compressors |
-
2009
- 2009-09-29 CN CN200910019507A patent/CN101691870A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265666A (en) * | 2014-08-29 | 2015-01-07 | 武汉钢铁(集团)公司 | Method for preventing surging of fans |
| CN104265666B (en) * | 2014-08-29 | 2016-03-30 | 武汉钢铁(集团)公司 | For preventing the method for blower fan surge |
| CN109798260A (en) * | 2019-01-15 | 2019-05-24 | 临涣焦化股份有限公司 | A kind of gas-blowing engine device |
| CN109798260B (en) * | 2019-01-15 | 2020-11-06 | 临涣焦化股份有限公司 | Gas blower device |
| CN110529417A (en) * | 2019-08-15 | 2019-12-03 | 西安陕鼓动力股份有限公司 | A kind of automatic on-line of multi-machine parallel connection Systems of Centrifugal Compressor Unit cuts machine operating method |
| CN112503566A (en) * | 2021-02-04 | 2021-03-16 | 亿昇(天津)科技有限公司 | Fan switching method |
| CN112503566B (en) * | 2021-02-04 | 2021-04-27 | 亿昇(天津)科技有限公司 | Fan switching method |
| CN113448295A (en) * | 2021-05-14 | 2021-09-28 | 郑州旭飞光电科技有限公司 | Method for switching induced draft fan, processor and storage medium |
| CN115013292A (en) * | 2022-06-28 | 2022-09-06 | 浙江中控技术股份有限公司 | Undisturbed switching control method for parallel compressors |
| CN115013292B (en) * | 2022-06-28 | 2024-05-14 | 中控技术股份有限公司 | Undisturbed switching control method for parallel compressors |
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Application publication date: 20100407 |