CN201486909U - Anti-surge safety control device of blower - Google Patents
Anti-surge safety control device of blower Download PDFInfo
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- CN201486909U CN201486909U CN2009200169480U CN200920016948U CN201486909U CN 201486909 U CN201486909 U CN 201486909U CN 2009200169480 U CN2009200169480 U CN 2009200169480U CN 200920016948 U CN200920016948 U CN 200920016948U CN 201486909 U CN201486909 U CN 201486909U
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Abstract
An anti-surge safety control device of a blower comprises a system processor module, a system power module, a system input and output module, a control functional module for negative feedback, a functional module for preventing thermal perturbation, a quick-opening and slow-closing functional module, a selecting functional module of a plurality of operating modes, a functional module for preventing surge gradient, a module of dynamic anti-surge lines, a comprehensive processing functional module of A plurality of operating conditions, a quick valve opening module for dangerous zones, a functional module for adjusting stable zones and a quick output module for opening and closing. The system power module is respectively connected with the system processor module and the system input and output module by conductors, the system processor module is connected with the system input and output module and the quick output module for opening and closing by data lines, and the rest modules are connected with the system processor module by a bus. The utility model has the advantages that the anti-surge safety control of various parameters is realized by introducing the inlet temperature, the inlet pressure and the outlet pressure of a blower, the safe and stable operation of the blower can be effectively protected, and the surge zones are kept away.
Description
Technical field
The utility model relates to the Anti-surge Control field of Fan Equipment, particularly a kind of anti-surge safety control of blower fan.
Background technique
The control strategy of traditional controlling schemes is to suppose that the pumping point flow of centrifugal compressor is Q under maximum (top) speed
P(having considered safe clearance) is if can make the suction port of compressor flow always greater than this critical flow Q
P, can guarantee that then surge does not take place centrifugal compressor.Controlling schemes is to work as inlet flow rate less than this critical flow Q
PThe time, open bypass control valve, make the portion gas of outlet turn back to inlet, make inlet flow rate greater than Q
PTill.The shortcoming of this anti-surge control method is only to have considered the flow parameter of blower fan when operation; parameter for pressure, the surge of temperature effect blower fan is not handled, when the protective action of the surge of blower fan appears can not playing effectively when unusual in pressure, temperature.
The model utility content
The purpose of this utility model is that the spy provides a kind of anti-surge safety control of blower fan for the pressure that guarantees blower fan, temperature occur still normally effectively implementing protection when unusual.
The utility model provides a kind of anti-surge safety control of blower fan, it is characterized in that: the anti-surge safety control of described blower fan comprises system processor module 1, system power supply module 2, system's input/output module 3, reverse feedback control function module 4, anti-thermal perturbation function module 5, change down soon and close function module 6, multiple mode of operation selection function module 7, anti-surge taper function module 10, dynamically anti-surge wire module 13, multi-operating mode integrated treatment function module 14, the deathtrap open valve module 15 fast, regulate region of stability function module 16, the quick output module 18 of switch;
Wherein: system power supply module 2 is connected with system input/output module 3 by conductor and system processor module 1 respectively; System processor module 1 is connected with system input/output module 3 by datawire;
Reverse feedback control function module 4, anti-thermal perturbation function module 5, soon change down close function module 6, multiple mode of operation selection function module 7, anti-surge taper function module 10, dynamically anti-surge wire module 13, multi-operating mode integrated treatment function module 14, deathtrap opens valve module 15 fast and regulates region of stability function module 16 and be connected with system processor module 1 by bus respectively;
System's input/output module 3 is connected by the quick output module 18 of datawire and switch.
The anti-surge safety control of described blower fan also comprises, the anti-saturated function module 8 of integration, many control loops and storing module 9, Control Parameter monitor module 11, convergence warning function module 12;
Wherein: the anti-saturated function module 8 of integration, many control loops and storing module 9, Control Parameter monitor module 11 and convergence warning function module 12 are connected with system processor module 1 by bus respectively.
The anti-surge safety control of described blower fan also comprises, regulates output module 17, inlet flow rate testing module 19, inlet pressure testing module 20, outlet pressure testing module 21, inlet temperature testing module 22;
Wherein: system's input/output module 3 is connected with inlet temperature testing module 22 with adjusting output module 17, inlet flow rate testing module 19, inlet pressure testing module 20, outlet pressure testing module 21 by datawire respectively.
Major functions and features has as follows:
Reverse feedback control
Set up the Anti-surge Control line in the antisurge control system, it is on the right side of surge line.When compressor operating point during on Anti-surge Control line right side, antisurge control system is output as closes the anti-surge valve fully; When compressor operating point arrived the Anti-surge Control line, antisurge control system was designed to open the anti-surge valve.When the operation point slowly is moved to the left, antisurge control system will be opened the anti-surge valve with pid control mode, make the operation point remain on the place, control point of ASCS.
Anti-thermal perturbation function
Practical experience is told our unit proper functioning and may surging phenomenon will take place in summer in the winter time.The unit performance curve of compressor can change along with the temperature variation of processing medium, and particularly the influence to air compressor is bigger.Antisurge control system has temperature compensation function, and it can be according to processing medium variation of temperature automatic deviation anti-surge curve, to adapt to the characteristic of unit.When the processing medium temperature raises, the anti-surge curve will move right; When the processing medium temperature reduces, the anti-surge curve will be moved to the left.
Change down the pass function soon
General anti-surge valve is all selected air to close, equal percentage characteristics for use, and ASCS changes down the pass function soon for better control anti-surge valve has designed especially.Every unit all wishes to open fast the anti-surge valve when surge takes place, to prevent dangerous the generation; But in the process of throttle down, also wish and to close at leisure,, also can not cause excessive technological fluctuation simultaneously to prevent the surge concussion.ASCS just has this function that changes down the pass soon, and after receiving the surge signal, it can open the anti-surge valve fast, timely, and when throttle down, control signal is also incited somebody to action slowly throttle down.
The selection of multiple mode of operation
The modern production situation has diversity, and mode of operation also must have various modes, could adapt to actual changeable production requirement like this.Antisurge control system has, and manual, automatic, automanual mode of operation can be selected for the user.Under automated manner, the Anti-surge Control valve is controlled by the output of antisurge control system fully.Under the mode of manual and test run, the action of Anti-surge Control valve is controlled by operator's manual output fully.But under semi-automatic mode, operator may misoperation, the semi-automatic function of antisurge control system can avoid fully because the consequence that misoperation causes: detecting operation personnel's input automatically, if this input may cause surge, then antisurge control system just will not be carried out, and has guaranteed the safe operation of unit.
The anti-saturated function of integration
The integration of PID controller is saturated should be avoided, particularly for requiring the Anti-surge Control of response fast.Owing to always exist deviation between process values and the setting value, therefore in the process of PID control anti-surge valve, can constantly carry out integral operation to deviation, if do not limited the integration saturated phenomenon will not take place, this can influence the speed that opens or closes valve once more.The saturated function of anti-integration of antisurge control system has been avoided the generation of this phenomenon, and it has set the upper and lower of integral value, has guaranteed the sensitivity of anti-surge valve at the border condition switch.
Many control loops are also deposited
The control of compressor comprises Anti-surge Control and Properties Control etc.Especially, two or more Anti-surge Control can and other controls be present in simultaneously in the control system, the exercising result of these control loops is mutual contradiction sometimes, this contradiction can hinder the normal control of anti-surge.The antisurge control system Control System Design has for the decoupling algorithm that disturbs between control loop, to eliminate the coupled interference between the loop.
The anti-surge taper function
Open signal soon if antisurge control system detects, then will start the anti-surge taper function, the record surge condition, automatically Anti-surge Control line, Anti-surge Control being burst at the seams soon simultaneously moves right.But because some is specific, make that the variation of surge line is interim, distinctive, so, antisurge control system has clear and definite affirmation and resets on configuration picture the validity of function to guarantee to control.The operator can approve current learning outcome, also can cancel current learning outcome.After the affirmation, also can reset on the previous surge Control Parameter if find existing problems.
The supervision of Anti-surge Control parameter
In antisurge control system, each parameter is carried out real-time supervision, though monitoring value greater than or less than normal processing range, ASCS will inform operator timely by certain form, so that take further processing, guarantee the normal operation of unit.Also increased processing among the ASCS, made unit under the situation of instrument fault, guaranteed its safety and operation continuously as much as possible the short circuit of the function, particularly transmitter of the trouble analysis and the processing of signal and the resistance silk fracture of open circuit analysis, platinum thermoresistance etc.
The convergence warning function
The operating point of unit is sometimes because disturbance or other reasons and instability.When operating point moves to the anti-surge line, and when being close within the anti-surge line certain limit, the ASCS system can send the attention that alarm signal causes operator immediately, takes measures in advance, guarantees the safe operation of unit.
Intelligent recognition is shut down function
When the operating point of unit moves to the anti-surge line, and within the time range of setting, the surging phenomenon of set point number has taken place to surpass, and the antisurge control system system just thinks and has some unsurmountable factors on equipment or the technology, can be forced to send cutoff command.
Complicated logical interlock control
Antisurge control system is except can be good at finishing the Anti-surge Control, and its powerful logical operation capability can also be realized a lot of logical interlock controls.Core is minimum load state start and stop cars.
High-precision Anti-surge Control
Adopt straight line the safe operation zone of compressor is reduced, and adopt the multistage polygronal function can increase the safe operation zone of the machine that contracts as the Anti-surge Control line as the Anti-surge Control line.Unit just may be safe condition under for non-safe situation under the pattern of straight line under the pattern of multistage polygronal function.Antisurge control system will be avoided unnecessary backflow or emptying like this, thereby has saved the energy.
Dynamic anti-surge curve (point) shows
By show the operation point of Anti-surge Control line and unit in real time on upper picture, operator can monitor the unit current working state intuitively.For the abnormal conditions of handling unit timely provide a visual basis.
The multi-operating mode integrated treatment
Usually, compressor all has more than one working state, and the operation point that these working staties have may differ greatly, and the working pressure that has is bigger, and these all make these operating modes can not merge processing.Antisurge control system has designed the various working selection function in this case again.Anti-surge line, control mode and the Control Parameter of every kind of operating mode all is diverse setting.This makes the operation that unit can both top limit under every kind of operating mode.
The valve of directly opening of deathtrap is controlled
The operation point of unit near the Anti-surge Control line time antisurge control system carry out PID control and just can make the operation point get back to the safety zone, but when the mobile too fast PID of operation point can't make it get back to the safety zone, directly driving valve is very important to predefined aperture, and be to make unit get back to the effective means of safety zone in the case, thereby reach the most direct the fastest Anti-surge Control.
The region of stability of regulating
For the unit of some special circumstances, its operating point just is near the anti-surge line, as easy as rolling off a log instability during work.Therefore, the dead zone range of setting pettiness can increase the very big stability of a system, if the deviation of PV-SV in the scope of setting, then the output of antisurge control system does not change, can avoid little fluctuation to cause continuous adjustment like this, thereby guarantee the stability of control.
Advantage of the present utility model:
The anti-surge safety control of blower fan described in the utility model; realize the anti-surge safety control of multi-parameter by inlet temperature, inlet pressure, the outlet pressure of introducing blower fan; can more effectively protect the safety and steady operation of blower fan, avoid surge region.Considered the flow parameter of blower fan when operation, handled, when the protective action of the surge of blower fan appears playing effectively when unusual in pressure, temperature for the parameter of pressure, the surge of temperature effect blower fan.
Description of drawings
Below in conjunction with drawings and the embodiments the utility model is described in further detail:
Fig. 1 is the theory structure schematic representation of the anti-surge safety control of blower fan.
Embodiment
Embodiment 1
Present embodiment provides a kind of anti-surge safety control of blower fan, it is characterized in that: the anti-surge safety control of described blower fan comprises system processor module 1, system power supply module 2, system's input/output module 3, reverse feedback control function module 4, anti-thermal perturbation function module 5, change down soon and close function module 6, multiple mode of operation selection function module 7, anti-surge taper function module 10, dynamically anti-surge wire module 13, multi-operating mode integrated treatment function module 14, the deathtrap open valve module 15 fast, regulate region of stability function module 16, the quick output module 18 of switch;
Wherein: system power supply module 2 is connected with system input/output module 3 by conductor and system processor module 1 respectively; System processor module 1 is connected with system input/output module 3 by datawire;
Reverse feedback control function module 4, anti-thermal perturbation function module 5, soon change down close function module 6, multiple mode of operation selection function module 7, anti-surge taper function module 10, dynamically anti-surge wire module 13, multi-operating mode integrated treatment function module 14, deathtrap opens valve module 15 fast and regulates region of stability function module 16 and be connected with system processor module 1 by bus respectively;
System's input/output module 3 is connected by the quick output module 18 of datawire and switch.
The anti-surge safety control of described blower fan also comprises, the anti-saturated function module 8 of integration, many control loops and storing module 9, Control Parameter monitor module 11, convergence warning function module 12;
Wherein: the anti-saturated function module 8 of integration, many control loops and storing module 9, Control Parameter monitor module 11 and convergence warning function module 12 are connected with system processor module 1 by bus respectively.
The anti-surge safety control of described blower fan also comprises, regulates output module 17, inlet flow rate testing module 19, inlet pressure testing module 20, outlet pressure testing module 21, inlet temperature testing module 22;
Wherein: system's input/output module 3 is connected with inlet temperature testing module 22 with adjusting output module 17, inlet flow rate testing module 19, inlet pressure testing module 20, outlet pressure testing module 21 by datawire respectively.
Embodiment 2
Present embodiment provides a kind of anti-surge safety control of blower fan, it is characterized in that: the anti-surge safety control of described blower fan comprises system processor module 1, system power supply module 2, system's input/output module 3, reverse feedback control function module 4, anti-thermal perturbation function module 5, change down soon and close function module 6, multiple mode of operation selection function module 7, anti-surge taper function module 10, dynamically anti-surge wire module 13, multi-operating mode integrated treatment function module 14, the deathtrap open valve module 15 fast, regulate region of stability function module 16, the quick output module 18 of switch;
Wherein: system power supply module 2 is connected with system input/output module 3 by conductor and system processor module 1 respectively; System processor module 1 is connected with system input/output module 3 by datawire;
Reverse feedback control function module 4, anti-thermal perturbation function module 5, soon change down close function module 6, multiple mode of operation selection function module 7, anti-surge taper function module 10, dynamically anti-surge wire module 13, multi-operating mode integrated treatment function module 14, deathtrap opens valve module 15 fast and regulates region of stability function module 16 and be connected with system processor module 1 by bus respectively;
System's input/output module 3 is connected by the quick output module 18 of datawire and switch.
The anti-surge safety control of described blower fan also comprises, the anti-saturated function module 8 of integration, many control loops and storing module 9, Control Parameter monitor module 11, convergence warning function module 12;
Wherein: the anti-saturated function module 8 of integration, many control loops and storing module 9, Control Parameter monitor module 11 and convergence warning function module 12 are connected with system processor module 1 by bus respectively.
Embodiment 3
The utility model provides a kind of anti-surge safety control of blower fan, it is characterized in that: the anti-surge safety control of described blower fan comprises system processor module 1, system power supply module 2, system's input/output module 3, reverse feedback control function module 4, anti-thermal perturbation function module 5, change down soon and close function module 6, multiple mode of operation selection function module 7, anti-surge taper function module 10, dynamically anti-surge wire module 13, multi-operating mode integrated treatment function module 14, the deathtrap open valve module 15 fast, regulate region of stability function module 16, the quick output module 18 of switch;
Wherein: system power supply module 2 is connected with system input/output module 3 by conductor and system processor module 1 respectively; System processor module 1 is connected with system input/output module 3 by datawire;
Reverse feedback control function module 4, anti-thermal perturbation function module 5, soon change down close function module 6, multiple mode of operation selection function module 7, anti-surge taper function module 10, dynamically anti-surge wire module 13, multi-operating mode integrated treatment function module 14, deathtrap opens valve module 15 fast and regulates region of stability function module 16 and be connected with system processor module 1 by bus respectively;
System's input/output module 3 is connected by the quick output module 18 of datawire and switch.
Claims (3)
1. the anti-surge safety control of a blower fan, it is characterized in that: the anti-surge safety control of described blower fan comprises system processor module (1), system power supply module (2), system's input/output module (3), reverse feedback control function module (4), anti-thermal perturbation function module (5), change down soon and close function module (6), multiple mode of operation selection function module (7), anti-surge taper function module (10), dynamically anti-surge wire module (13), multi-operating mode integrated treatment function module (14), the deathtrap open valve module (15) fast, regulate region of stability function module (16), the quick output module of switch (18);
Wherein: system power supply module (2) is connected with system's input/output module (3) with system processor module (1) by conductor respectively; System processor module (1) is connected with system's input/output module (3) by datawire;
Reverse feedback control function module (4), anti-thermal perturbation function module (5), soon change down close function module (6), multiple mode of operation selection function module (7), anti-surge taper function module (10), dynamically anti-surge wire module (13), multi-operating mode integrated treatment function module (14), deathtrap open valve module (15) fast and adjusting region of stability function module (16) is connected with system processor module (1) by bus respectively;
System's input/output module (3) is connected by the quick output module of datawire and switch (18).
2. according to the anti-surge safety control of the described blower fan of claim 1, it is characterized in that: the anti-surge safety control of described blower fan also comprises, the anti-saturated function module of integration (8), many control loops and storing module (9), Control Parameter monitor module (11), convergence warning function module (12);
Wherein: the anti-saturated function module of integration (8), many control loops and storing module (9), Control Parameter monitor module (11) and convergence warning function module (12) are connected with system processor module (1) by bus respectively.
3. according to the anti-surge safety control of the described blower fan of claim 1, it is characterized in that: the anti-surge safety control of described blower fan also comprises, regulate output module (17), inlet flow rate testing module (19), inlet pressure testing module (20), outlet pressure testing module (21), inlet temperature testing module (22);
Wherein: system's input/output module (3) is connected with inlet temperature testing module (22) with adjusting output module (17), inlet flow rate testing module (19), inlet pressure testing module (20), outlet pressure testing module (21) by datawire respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009200169480U CN201486909U (en) | 2009-08-26 | 2009-08-26 | Anti-surge safety control device of blower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200169480U CN201486909U (en) | 2009-08-26 | 2009-08-26 | Anti-surge safety control device of blower |
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| CN201486909U true CN201486909U (en) | 2010-05-26 |
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| CN2009200169480U Expired - Fee Related CN201486909U (en) | 2009-08-26 | 2009-08-26 | Anti-surge safety control device of blower |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392812A (en) * | 2011-06-10 | 2012-03-28 | 辽宁华兴森威科技发展有限公司 | Surge control system of compressor unit |
| 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 |
-
2009
- 2009-08-26 CN CN2009200169480U patent/CN201486909U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392812A (en) * | 2011-06-10 | 2012-03-28 | 辽宁华兴森威科技发展有限公司 | Surge control system of compressor unit |
| CN102392812B (en) * | 2011-06-10 | 2015-09-30 | 辽宁华兴森威科技发展有限公司 | Surge control system of compressor unit |
| 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 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20120826 |