CN202563324U - Frequency-variable redundancy control system for high/low-voltage fan/water pump - Google Patents

Frequency-variable redundancy control system for high/low-voltage fan/water pump Download PDF

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Publication number
CN202563324U
CN202563324U CN2012201361018U CN201220136101U CN202563324U CN 202563324 U CN202563324 U CN 202563324U CN 2012201361018 U CN2012201361018 U CN 2012201361018U CN 201220136101 U CN201220136101 U CN 201220136101U CN 202563324 U CN202563324 U CN 202563324U
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CN
China
Prior art keywords
control
voltage
redundancy
water pump
low
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Expired - Fee Related
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CN2012201361018U
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Chinese (zh)
Inventor
王盛学
汪仁智
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CHONGQING MINGBAO TECHNOLOGY DEVELOPMENT Co Ltd
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CHONGQING MINGBAO TECHNOLOGY DEVELOPMENT Co Ltd
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Priority to CN2012201361018U priority Critical patent/CN202563324U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The utility model provides a frequency-variable redundancy control system for high/low-voltage fans/water pumps, which comprises high-voltage frequency converters and high/low-voltage fans/water pumps. The system is characterized in that the N high/low-voltage fans/water pumps are controlled by the N+1 high-voltage frequency converters, in which N is an positive integer; a DCS control system collects the working state and power consumption of each high/low-voltage fan/water pump and controls the switch of each frequency converter; the redundancy DCS control of one-in-service and one-standby or multiple-in-service and one-standby is achieved to result in the on-line undisturbed switching. The high/low-voltage fan/water pump frequency-variable redundancy control technique is innovatively provided; the high and new techniques are completely utilized, including redundancy converter, redundancy control system and redundancy control signal; the frequency converter switching is performed by the redundancy DCS control system; and the reliability of the control system is greatly improved.

Description

High-low pressure blower fan/pump variable frequency redundancy control system
Technical field
The utility model relates to technical field of automatic control, is specifically related to a kind of high-low pressure blower fan/pump variable frequency redundancy control system.
Background technology
Blower fan and water pump are the visual plants of high power consumption, and its power does not wait from 200kW to 15000kW.In the various production runes of all trades and professions, blower fan and water pump are by a large amount of being used in the technological process, and blower fan and water pump load power consumption are bigger; Starting current is higher, regulates the air quantity or the water yield with devices such as valve, baffle plates simultaneously, when piping system designs; For satisfying the maximum requirement of production environment; Must leave surplus, so the air quantity of blower fan/water pump, the water yield and pressure are often bigger than normal, the design bigger than normal of power must cause the waste of energy.It is to consume in the pressure drop of variable valve that a lot of blower fans and water pump have the energy that is higher than 30-70%, not only causes waste of electric energy, inefficiency, but also often have an accident.
It is because power of motor is directly proportional with the product of voltage and current that the used high-voltage motor of blower fan and water pump produces; Therefore low voltage motor power increases to a certain degree the restriction that (like 300KW/380V) electric current receives the permission ability to bear of lead and just is difficult to do greatly, or cost is too high.Need realize high-power output through improving voltage.The high-voltage motor advantage is that power is big, and the ability that withstands shocks is strong; Shortcoming is that inertia is big, and startup and braking be difficulty all.Decide mode according to reality: capacity motor is significantly smaller than can directly start below power supply capacity and the 1000KW, and dash current at this moment is 3-6 a times of ratings.Excessive in order to prevent dash current, must consider to reduce the Starting mode of starting current for big motor, most common form has variable frequency starting.
In the conventional art, high voltage converter and high-low pressure blower fan/water pump are to control one to one, and to increase windage or water resistance, sacrifice efficiency of motor and meet the requirements of, and loss is serious.The power consumption of blower fan and water pump in the reduction production run is the technical matters that those skilled in the art pursue solution with effective production cost that reduces enterprise all the time.
The utility model content
To the above-mentioned deficiency that prior art exists, the purpose of the utility model is to solve the high-low pressure blower fan and there is the big problem of merit power consumption in water pump, and a kind of high-low pressure blower fan/pump variable frequency redundancy control system is provided.
The technical scheme that the utility model adopts is: a kind of high-low pressure blower fan/pump variable frequency redundancy control system; Comprise high voltage converter, high-low pressure blower fan/water pump is characterized in that, N platform high-low pressure blower fan/water pump is by the control of N+1 platform high voltage converter, and N is a positive integer; By duty and the power consumption that the DCS control system is gathered each high-low pressure blower fan/water pump respectively, control the switching of each frequency converter; Adopt the using and the reserved or many, realize the moving switching of online unperturbed with the redundant DCS control that is equipped with.DCS selects the PAC8000 of GE for use in the said DCS control system.
Compare prior art, the utlity model has following advantage:
The utility model novelty ground proposes high-low pressure blower fan/pump variable frequency The technique on redundant control; New and high technologies such as redundant frequency converter, redundancy control system and redundancy control signal have fully been used; Formed the redundant handoff technique of online redundant handoff technique of unique frequency converter and frequency converter off-line; Off-line belongs to initiative less than 3 seconds in the whole world switching time.High voltage converter is realized the moving switching of online unperturbed, has realized the stable control and the operation of high-low pressure blower fan/water pump, if adopt the off-line switching mode, fully do not influence the normal operation of high-low pressure blower fan/water pump less than 3 seconds its switching time; Frequency converter switches the redundant DCS control system of employing, has greatly improved the reliability of control system.
The utility model fully combines frequency converter redundancy, control system redundancy, detection signal redundancy etc. to form new innovative point; Realized the Total tune control optimization in high-low pressure blower fan and the pump variable frequency energy saving technical reconstruction, the scheduling controlling robotization.The application of this product can greatly improve the reliability and the automatic control level of high-low pressure blower fan and water pump process equipment.
Adopt the local startup in scene, the local switching, long-range DCS starts automatically, and timing automatic switching or fault are from modes such as motion tracking switchings; Direct economic benefit can reach economize on electricity 20-30%; That indirect benefit has is energy-saving and cost-reducing, soft start, adjustable speed, kinds of protect, raising motor power factor, improve system automation and technological level, maintenance workload few, reduce cost etc.
Description of drawings
Fig. 1 is high-low pressure blower fan/pump variable frequency redundancy control system structural representation;
Fig. 2 is the redundant DCS control system of a high-low pressure blower fan/pump variable frequency structure principle chart.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further explain.
As shown in Figure 1, a kind of high-low pressure blower fan/pump variable frequency redundancy control system; 2 high-low pressure blower fans are controlled by 3 high voltage converters; By duty and the power consumption that the DCS control system is gathered said 2 high-low pressure blower fans respectively, the switching of 3 control of conversion devices; Adopt two to drag one or three to drag two operation control method, realize the using and the reserved or many, realize the moving switching of online unperturbed with the redundant DCS control that is equipped with.
The utility model is according to high-low pressure blower fan and pump variable frequency technological transformation process condition and requirement usually; This conceptual design adopts the three-level system structure, and the first order is the field instrument Data Detection, and the second level is that process data is handled; And the DCS control system, the third level is policer operation.
The detection of on-the-spot technological parameter for ease; Give the DCS control system with detection signals such as scene temperature, pressure, flow, liquid level and electric vacuum degree through standard interface outputting standard 4-20mA signal; After handling through DCS then; The production run of on-the-spot each process equipment of control in real time, the quantities data message after will handling simultaneously is sent to the policer operation station through industrial Ethernet communication interface, realizes the real-time monitoring and the operational processes of parameters of technique process.
Realize the utility model, adopt the redundant DCS control system of high-low pressure blower fan/pump variable frequency; Comprise:
Base plate: be the controller base plate and the I/O module base plate of RailBus bussing technique, each controller base plate can be installed the controller of a pair of redundancy, and a power supply monitoring module has the RS485 interface of two 9 pins simultaneously, supports the MODBUS rtu protocol;
Master controller: be the 266MHz 32-bit microprocessor, the 25M internal memory, Dual-Ethernet and serial communication interface are supported API, fieldbus, ModBus, HART, point-to-point communication and OPC, realize redundant configuration;
The I/O module: analog quantity input A/D conversion resolution is 16; Analog quantity output A/D conversion resolution is 12; On-the-spot loop is detected built-in input variable linearization, engineering unit conversion, extraction of square root filtering, warning and cold junction compensation calculation function;
Connecting terminal block: be tape loop switch and fuse, be no electric arc and no-spark type connecting terminal block;
Power supply: the N+1 redundant configuration, adopt floating empty design of power module, two block power supplies are respectively born 50% supply load under the normal condition, when wherein a block power supply broke down, another block power supply was born 100% load.
In the said base plate, each I/O base plate possesses 8 modules and two kinds of selections of 4 module base plates, possesses 2 districts and 1 district uses base plate according to the difference of on-site signal, and module and intermodule are isolated each other, the support hot plug.
In institute's master controller, a master controller can be installed 64 I/O modules at most, supports hot plug.
Two Ethernet interfaces, 4 serial communication interfaces are integrated on CPU card and the base plate thereof; Support Modbus TCP ethernet communication agreement, Modbus RTU industrial series communications protocol, RS232/422/485 serial communication protocol, HART agreement comprehensively, and FF, Profibus field bus protocol.Active station and control station can redundancy communications, guaranteed the safe reliability of operating system, adopt the OPC technology, for the level of factory information management system provides data-interface easily comprehensively.
The modular design of control system makes the user be easy to build the system of a complete complicacy.Expand flexibly, can realize loop from little to several, arrive the application of thousands of loops different scales greatly.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.

Claims (2)

1. high-low pressure blower fan/pump variable frequency redundancy control system; Comprise high voltage converter, high-low pressure blower fan/water pump is characterized in that, N platform high-low pressure blower fan/water pump is by the control of N+1 platform high voltage converter, and N is a positive integer; By duty and the power consumption that the DCS control system is gathered each high-low pressure blower fan/water pump respectively, control the switching of each frequency converter.
2. high-low pressure blower fan according to claim 1/pump variable frequency redundancy control system is characterized in that DCS selects the PAC8000 of GE for use in the said DCS control system.
CN2012201361018U 2012-03-31 2012-03-31 Frequency-variable redundancy control system for high/low-voltage fan/water pump Expired - Fee Related CN202563324U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012201361018U CN202563324U (en) 2012-03-31 2012-03-31 Frequency-variable redundancy control system for high/low-voltage fan/water pump

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Application Number Priority Date Filing Date Title
CN2012201361018U CN202563324U (en) 2012-03-31 2012-03-31 Frequency-variable redundancy control system for high/low-voltage fan/water pump

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108643283A (en) * 2018-05-09 2018-10-12 合肥亿福自动化科技有限公司 A kind of redundancy water pump equilibrium not shutdown system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108643283A (en) * 2018-05-09 2018-10-12 合肥亿福自动化科技有限公司 A kind of redundancy water pump equilibrium not shutdown system

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Granted publication date: 20121128

Termination date: 20150331

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