CN102352866A - Anti-surge control device of blower - Google Patents
Anti-surge control device of blower Download PDFInfo
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- CN102352866A CN102352866A CN2011103368153A CN201110336815A CN102352866A CN 102352866 A CN102352866 A CN 102352866A CN 2011103368153 A CN2011103368153 A CN 2011103368153A CN 201110336815 A CN201110336815 A CN 201110336815A CN 102352866 A CN102352866 A CN 102352866A
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Abstract
The invention relates to an anti-surge control device of a blower. The anti-surge control device comprises the blower and a PLC (programmable logic controller), wherein an atmospheric valve is arranged on an outlet pipeline of the blower, and an electric control system of the atmospheric valve is electrically connected with the PLC; the inlet of the blower is provided with a temperature sensor and a differential pressure switch which are electrically connected with the PLC respectively, and the temperature sensor is used for transmitting the temperature signal at the inlet of the blower to the PLC; and the differential pressure switch is used for transmitting the switching value signal to the PLC. The anti-surge control device provided by the invention has the advantages that the temperature sensor and the differential pressure switch are only required to be arranged at the inlet of the blower, and the anti-surge control device is simple and reliable, thereby greatly reducing the calculation of the PLC, and the cost is low; and the cost of a blower electrical system is obviously lowered, the downtime of the blower is greatly shortened, the damage caused by surge is overcome, and the service life of the blower is prolonged.
Description
Technical field
The present invention relates to be used for the high speed centrifugation blower of sewage treatment industry, specifically a kind of anti-surge control device of blower.
Background technique
In sewage disposal process, utilize blower in the water of aeration tank, to advertise air, make in the pond bacterium be able to existence, the survival bacterium eats up the dirt in the sewage, through repeatedly precipitating, filtering, makes sewage reach emission standard again.The entire sewage handling process has strict requirement to blower export pressure and air quantity size, otherwise bacterium can't survive.Blower in the course of the work, when inlet flow rate during less than the minimum discharge of unit under this operating mode, unit will get into surge area from the working area, at this moment unit is done periodic violent oscillatory motion together with its peripheral conduits, is called surge on the engineering, as shown in Figure 1.Get into surge area generation surge in case the Anti-surge Control of blower is exactly a unit by the working area, open atmospheric valve rapidly, surge is slowly closed atmospheric valve after disappearing.
Traditional blower Anti-surge Control is divided into manually with automatically to be controlled.Manually control needs professional workforce's real-time monitoring, and when surging phenomenon takes place when, the manual unlocking atmospheric valve; But manually the reliability of control is low; In case unit generation surge will bring destructive consequence, so present blower seldom adopts manual Anti-surge Control mode.In traditional automatic control mode, in the ingress of blower the inlet flow rate that atmospheric temperature, pressure, humidity transducer and differential pressure pickup calculate unit is housed, the shortcoming of this method is the control calculation of complex, and cost is high.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of anti-surge control device of blower is provided, this control gear is simple and reliable, can significantly reduce the amount of calculation of PLC, and cost is low.
According to technological scheme of the present invention: a kind of anti-surge control device of blower; Comprise blower and PLC; On the outlet conduit of said blower atmospheric valve is installed; The automatical control system of said atmospheric valve is electrically connected with said PLC; The ingress of said blower is provided with temperature transducer and the differential pressure switch that is electrically connected with said PLC respectively; Said temperature transducer sends the temperature signal at said blower inlet place to said PLC, and said differential pressure switch sends the switching value signal to said PLC.
The ingress of said blower is provided with the entry guide vane by said PLC control.
The outlet port of said blower is provided with and is used to measure the pressure transducer that one's intention as revealed in what one says is pressed, and said pressure transducer sends signal to PLC.
Technique effect of the present invention is: the present invention only needs at blower inlet place mounting temperature sensor and differential pressure switch, and is simple and reliable, can significantly reduce the calculating of PLC, and cost is low; The present invention can obviously reduce the cost of blower electrical system, significantly reduces the dead time of blower, has overcome the harm that surge brings, the life-span of having improved blower.
Description of drawings
Fig. 1 is the Anti-surge Control schematic diagram of blower.
Fig. 2 is a structured flowchart of the present invention.
Embodiment
Be further described below in conjunction with the accompanying drawing specific embodiments of the invention.
Among Fig. 2, comprise temperature transducer 1, differential pressure switch 2, entry guide vane 3, blower 4, pressure transducer 5, atmospheric valve 6, PLC7 etc.
As shown in Figure 2, the present invention is a kind of anti-surge control device that is used for the blower of sewage treatment industry, comprises blower 4 and PLC7 control system.The main body of blower 4 is made up of drive motor, impeller and gear-box.The outlet of blower 4 communicates with cesspool through pipeline, and atmospheric valve 6 is installed on the outlet conduit of blower 4, and the automatical control system of atmospheric valve 6 is electrically connected with PLC7.Atmospheric valve 6 is opened when blower 4 starts fully, realizes the No Load Start of blower 4, when blower 4 starts completion, slowly closes atmospheric valve 6, makes blower 4 entering work.
The ingress of blower 4 is provided with temperature transducer 1 and the differential pressure switch 2 that is electrically connected with PLC7 respectively.Temperature transducer 1 is used to detect the gas temperature of blower 4 inlets; Temperature transducer 1 sends the temperature signal of blower 4 ingress to PLC7; When inlet temperature rises suddenly (temperature rises 1 degree centigrade in 1 second); PLC7 can judge that surge has taken place current unit; The PLC7 control system provides unit surge signal, opens atmospheric valve 6 rapidly.Differential pressure switch 2 sends the switching value signal to PLC7, and when instruction was sent in differential pressure switch 2 actions to PLC7, PLC7 can judge that unit is about to surge, rapidly atmospheric valve 6 is opened simultaneously.
Also be provided with the entry guide vane of being controlled by PLC7 3 in the ingress of blower 4, entry guide vane 3 is used to regulate the inlet air quantity of blower 4.When master control system is given the air output regulated signal; This machine PLC7 provides the instruction of entry guide vane 3 angles; The flow of adjustment blower 4; To satisfy the air quantity requirement of cesspool; Simultaneously; Under the prerequisite that guarantees the unit flow adjustment range, the PLC7 control system is set the minimal adjustment angle limits of entry guide vane 3 angles in software.
Also be provided with in the outlet port of blower 4 and be used to measure the pressure transducer 5 that one's intention as revealed in what one says is pressed, pressure transducer 5 sends signal to PLC7.PLC7 judges according to field working conditions whether pressure oversteps the extreme limit.
Under the general sewage treatment operating mode, the required pressure of cesspool remains unchanged basically, only needs to satisfy through the angle of regulating entry guide vane 3 traffic requirement of cesspool.Blower 4 can be measured the Minimum differntial pressure under Sewage Plant working pressure condition dispatching from the factory when test, selects for use suitable differential pressure switch 2 can realize that the anti-surge of unit controls automatically.
The present invention only needs at blower 4 ingress mounting temperature sensors 1 and differential pressure switches 2, and when differential pressure switch moves 2 the time, PLC7 can judge that blower 4 is about to surges, and the PLC7 control system provides instruction and opens antiaircraft valve 6 rapidly, avoids surge to take place; Suddenly raise when the PLC control system detects inlet temperature, can judge blower 4 surge, the PLC7 control system provides instruction and opens antiaircraft valve 6 rapidly.The present invention is simple and reliable, can significantly reduce the calculating of PLC7, and cost is low.The present invention can obviously reduce the cost of blower 4 electrical systems, significantly reduces the dead time of blower 4, owing to overcome the harm that surge brings, has improved the life-span of blower 4.The present invention can be widely used in the products such as various centrifugal compressors, centrifugal blower.
Claims (3)
1. the anti-surge control device of an air blast; Comprise air blast (4) and PLC(7); Atmospheric valve (6) is installed on the outlet conduit of said air blast (4); The electric-control system of said atmospheric valve (6) and said PLC(7) be electrically connected; It is characterized in that: the porch of said air blast (4) is provided with respectively and said PLC(7) temperature sensor (1) and the pressure difference switch (2) that are electrically connected; Said temperature sensor (1) sends the temperature signal of said air blast (4) porch to said PLC(7), said pressure difference switch (2) sends the switching value signal to said PLC(7).
2. according to the anti-surge control device of the described blower of claim 1, it is characterized in that: the ingress of said blower (4) is provided with the entry guide vane (3) by said PLC (7) control.
3. according to the anti-surge control device of claim 1 or 2 described blowers; It is characterized in that: the outlet port of said blower (4) is provided with and is used to measure the pressure transducer (5) that one's intention as revealed in what one says is pressed, and said pressure transducer (5) sends signal to PLC (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103368153A CN102352866A (en) | 2011-10-29 | 2011-10-29 | Anti-surge control device of blower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103368153A CN102352866A (en) | 2011-10-29 | 2011-10-29 | Anti-surge control device of blower |
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| CN102352866A true CN102352866A (en) | 2012-02-15 |
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| CN2011103368153A Pending CN102352866A (en) | 2011-10-29 | 2011-10-29 | Anti-surge control device of blower |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927027A (en) * | 2012-08-01 | 2013-02-13 | 北京首钢自动化信息技术有限公司 | Reverse flow protective method for blast furnace blower |
| CN104912833A (en) * | 2015-06-25 | 2015-09-16 | 沈阳鼓风机集团自动控制系统工程有限公司 | Flowmeter-free anti-surge control system of GM air blower in sewage treatment plant |
| CN104965496A (en) * | 2015-06-25 | 2015-10-07 | 沈阳鼓风机集团自动控制系统工程有限公司 | Anti-surge control method based on anti-surge control system |
| CN104989661A (en) * | 2015-06-24 | 2015-10-21 | 上海诺地乐通用设备制造有限公司 | Anti-surge energy-saving control device of single-stage high-speed centrifugal air blower |
| CN106194811A (en) * | 2016-09-26 | 2016-12-07 | 南京磁谷科技有限公司 | The operation control system of magnetic suspension centrifugal aeration air blower and control method |
| CN106351837A (en) * | 2016-09-10 | 2017-01-25 | 安徽蓝鼎环保能源科技有限公司 | Linkage technology for venting valves of Roots blowers |
| CN107178516A (en) * | 2016-03-11 | 2017-09-19 | 韩华泰科株式会社 | The control method of compressor control system and compressor |
| CN107237770A (en) * | 2017-08-09 | 2017-10-10 | 绿派（上海）能源股份有限公司 | A kind of blower unit energy efficiency control system and its method of work |
| CN108035905A (en) * | 2018-01-08 | 2018-05-15 | 长兴埃克森科技有限公司 | A kind of automatic frequency-conversion control system for preventing wind turbine surge |
| CN109595149A (en) * | 2019-01-15 | 2019-04-09 | 上海汽车集团股份有限公司 | The automatic identifying method and system of engine supercharger surge |
| CN112503019A (en) * | 2020-11-30 | 2021-03-16 | 华能国际电力股份有限公司营口电厂 | Desulfurization oxidation fan control system |
| CN113606156A (en) * | 2021-09-22 | 2021-11-05 | 重庆江增船舶重工有限公司 | Self-balancing anti-surge structure of steam compressor and control method |
| CN113775554A (en) * | 2021-11-09 | 2021-12-10 | 亿昇(天津)科技有限公司 | Emptying valve assembly, air blower system and control method of air blower system |
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| CN101387306A (en) * | 2008-10-31 | 2009-03-18 | 武汉钢铁(集团)公司 | Turbine gas compressor surge-proof control device |
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| CN201757075U (en) * | 2010-04-09 | 2011-03-09 | 江苏金通灵风机股份有限公司 | Monopole centrifugal blower control system |
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| CN1118876A (en) * | 1994-05-19 | 1996-03-20 | 株式会社荏原制作所 | Surge detection device and turbomachinery therewith |
| CN101303030A (en) * | 2007-05-10 | 2008-11-12 | 沈阳创思达自动化系统有限公司 | Surge-proof system |
| CN101545495A (en) * | 2008-03-26 | 2009-09-30 | 上海宝信软件股份有限公司 | Device and method for controlling anti-surging of a blast blower |
| CN101387306A (en) * | 2008-10-31 | 2009-03-18 | 武汉钢铁(集团)公司 | Turbine gas compressor surge-proof control device |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927027A (en) * | 2012-08-01 | 2013-02-13 | 北京首钢自动化信息技术有限公司 | Reverse flow protective method for blast furnace blower |
| CN104989661A (en) * | 2015-06-24 | 2015-10-21 | 上海诺地乐通用设备制造有限公司 | Anti-surge energy-saving control device of single-stage high-speed centrifugal air blower |
| CN104912833A (en) * | 2015-06-25 | 2015-09-16 | 沈阳鼓风机集团自动控制系统工程有限公司 | Flowmeter-free anti-surge control system of GM air blower in sewage treatment plant |
| CN104965496A (en) * | 2015-06-25 | 2015-10-07 | 沈阳鼓风机集团自动控制系统工程有限公司 | Anti-surge control method based on anti-surge control system |
| CN104965496B (en) * | 2015-06-25 | 2018-09-11 | 沈阳鼓风机集团自动控制系统工程有限公司 | Anti-surge control method based on antisurge control system |
| CN107178516B (en) * | 2016-03-11 | 2020-02-14 | 韩华航空航天公司 | Compressor control system and control method of compressor |
| CN107178516A (en) * | 2016-03-11 | 2017-09-19 | 韩华泰科株式会社 | The control method of compressor control system and compressor |
| CN106351837A (en) * | 2016-09-10 | 2017-01-25 | 安徽蓝鼎环保能源科技有限公司 | Linkage technology for venting valves of Roots blowers |
| CN106194811A (en) * | 2016-09-26 | 2016-12-07 | 南京磁谷科技有限公司 | The operation control system of magnetic suspension centrifugal aeration air blower and control method |
| CN107237770A (en) * | 2017-08-09 | 2017-10-10 | 绿派（上海）能源股份有限公司 | A kind of blower unit energy efficiency control system and its method of work |
| CN107237770B (en) * | 2017-08-09 | 2023-11-10 | 绿派（上海）能源股份有限公司 | Energy-saving and efficiency-increasing control system of blower unit and working method thereof |
| CN108035905A (en) * | 2018-01-08 | 2018-05-15 | 长兴埃克森科技有限公司 | A kind of automatic frequency-conversion control system for preventing wind turbine surge |
| CN109595149A (en) * | 2019-01-15 | 2019-04-09 | 上海汽车集团股份有限公司 | The automatic identifying method and system of engine supercharger surge |
| CN112503019A (en) * | 2020-11-30 | 2021-03-16 | 华能国际电力股份有限公司营口电厂 | Desulfurization oxidation fan control system |
| CN113606156A (en) * | 2021-09-22 | 2021-11-05 | 重庆江增船舶重工有限公司 | Self-balancing anti-surge structure of steam compressor and control method |
| CN113775554A (en) * | 2021-11-09 | 2021-12-10 | 亿昇(天津)科技有限公司 | Emptying valve assembly, air blower system and control method of air blower system |
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Application publication date: 20120215 |