CN202257243U - Distributed Centralized Control System for Small Steam Turbine - Google Patents
Distributed Centralized Control System for Small Steam Turbine Download PDFInfo
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- CN202257243U CN202257243U CN2011203699611U CN201120369961U CN202257243U CN 202257243 U CN202257243 U CN 202257243U CN 2011203699611 U CN2011203699611 U CN 2011203699611U CN 201120369961 U CN201120369961 U CN 201120369961U CN 202257243 U CN202257243 U CN 202257243U
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- Y—GENERAL 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
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Abstract
The utility model discloses a small-size turbine distributed centralized control system relates to electromechanical field, aims at providing a small-size turbine distributed centralized control system. The technical essential of the utility model: the system comprises a user terminal, a program control unit, an interface unit, a display unit, a field signal monitoring and adjusting control unit and a power supply unit; the power supply unit is used for supplying power to the program control unit, the interface unit, the display unit and the field signal monitoring and adjusting control unit; the field signal monitoring and adjusting control unit is used for acquiring analog signals of a field part and outputting adjusting control signals to the field part; the field signal monitoring and adjusting control unit is in signal interaction with the program control unit through the interface unit; the program control unit is also in signal connection with a user terminal; the interface unit is also in signal connection with the display unit. The utility model maximally performs the decentralized control of the power supply; the method has the advantages of high reliability and good expansibility.
Description
Technical field
The utility model relates to dynamo-electric field, especially controls the distributed centralized control system of protection to small steam turbine.
Background technology
In recent years; Domestic independent steam turbine control the protection system industry, the particularly application in large-size thermal power plant of having formed gradually, homemade steam turbine control protection system has obtained gratifying achievement; But surveillance that this type systematic is used and regulation and control system adopt overseas equipment mostly; Exist and safeguard difficult, problems such as parts replacement is difficult, cost height, be not suitable for being applied to domestic novel energy small power generation unit (as: energy-conservation environmental protection units such as biomass power generation, cogeneration), and because the system control signal point that is applied in the large-scale unit is more; In design in order to show large batch of alerting signal; Most systems has replaced the alarm window warning system with soft alarm window, though can guarantee the integrality of alarm set point like this, the renders operation personnel ignore the alarm condition of signal of interest easily.In addition, part steam turbine control protection system power supply link is weak, and mostly the power supply of processor and signal acquisition module is serial arrangement, does not accomplish real dispersion, causes the active and standby switching of redundant processor undesired easily, the initiating system safety problem.
The utility model content
The goal of the invention of the utility model is: the problem to above-mentioned existence provides a kind of small steam turbine distributed centralized control system.
The technical scheme that the utility model adopts is such: the distributed centralized control system of a kind of small-sized steamer comprises user terminal, program-controlled unit, interface unit, display unit, on-site signal supervision and regulates control module and power supply unit; Said power supply unit is used for keeping watch on and the power supply of adjusting control module to program-controlled unit, interface unit, display unit, on-site signal; Said on-site signal is kept watch on and is regulated simulating signal, the switching value signal that control module is used for the collection site part, also regulates control signal to situ part output simultaneously; On-site signal keeps watch on that to carry out signal through said interface unit and program-controlled unit mutual with regulating control module; Said program-controlled unit also has signal with user terminal and is connected; Said interface unit also has signal with display unit and is connected.
Preferably, said on-site signal is kept watch on the adjusting control module and is comprised rotating machinery security monitoring device and regulation and control device of industrial turbine;
Said rotating machinery security monitoring device has displacement input interface, vibration signal input interface, tach signal input interface, analog output interface circuit;
Said industrial steamer control set for adjusting has tach signal input interface, analog quantity control signal output interface, switching value control signal output interface, switching value control signal input interface, switching value signal input interface and switching value signal output interface.
Preferably, said interface unit comprises No. 1 substation, No. 2 substations, No. 3 substations and No. 4 substations;
Said No. 1 substation comprises substation interface module 1 and analog quantity load module 1; Said analog quantity load module 1 is connected with the analog output interface circuit of rotating machinery security monitoring device; Substation interface module 1 is used for that to carry out signal mutual with said program-controlled unit;
Said No. 2 substations comprise substation interface module 2, analog quantity load module 2 and analog output module; Said analog quantity load module 2 is connected with the analog output interface circuit of rotating machinery security monitoring device; Substation interface module 2 is used for that to carry out signal mutual with said program-controlled unit; Analog output module is used for to situ part output analog control signal;
Said No. 3 substations comprise substation interface module 3 and switching input module; Said switching input module is connected with the switching value signal output interface of industrial steamer control set for adjusting; Substation interface module 3 is used for that to carry out signal mutual with said program-controlled unit;
Said No. 4 substations comprise substation interface module 4, switching value output module; Said switching value output module is connected with the switching value control signal input interface of industrial steamer control set for adjusting; Substation interface module 4 is used for that to carry out signal mutual with said program-controlled unit.
Preferably, said No. 4 substations also have RS-485 module, CANOPEN module and DiviceNet module.
Preferably, said display unit is a combined light word warning device, and the switching value output module of said 4 substations also is connected with combined light word warning device.
Preferably, said program-controlled unit comprises A main website and B main website; Described two main websites all have the ethernet communication module of power module, central processing unit, 2 redundant configuration; Having the MPI network between said A main website and the B main website is connected;
Power module in said A main website and the B main website is respectively central processing unit, the ethernet communication module for power supply in its place main website;
It is mutual that central processing unit in the A main website carries out signal through the substation interface module in a fieldbus and said 4 substations; It is mutual that ethernet line and the user terminal of the ethernet communication module of two redundant configuration in the A main website through two redundant configuration carries out signal;
It is mutual that central processing unit in the B main website carries out signal through the substation interface module in another fieldbus and said 4 substations; It is mutual that ethernet line and the user terminal of the ethernet communication module of two redundant configuration in the B main website through described two redundant configuration carries out signal.
Preferably, said power supply unit is a double-power supply switching device, and double-power supply switching device has ac power output and dc power output end; Said ac power output is respectively to rotating machinery security monitoring device, A main website, the power supply of B main website; Dc power output end is respectively regulation and control device of industrial turbine, No. 1 substation, No. 2 substations, combined light word warning device, No. 3 substations, No. 4 substations power supply is provided.
Preferably; Be provided with the insurance terminal at said rotating machinery security monitoring device, A main website, B main website, regulation and control device of industrial turbine, No. 1 substation, No. 2 substations, combined light word warning device, No. 3 substations, No. 4 substation places, the power output end of said double-power supply switching device provides power supply through each insurance terminal to rotating machinery security monitoring device, A main website, B main website, regulation and control device of industrial turbine, No. 1 substation, No. 2 substations, combined light word warning device, No. 3 substations, No. 4 substations.
In sum, owing to adopted technique scheme, the beneficial effect of the utility model is:
1. has rational warning system;
2. the power-supply system that has alternating current-direct current redundancy, topological structure has been accomplished the decentralised control of power supply to greatest extent;
3. have two in real time the synchronous exchange data redundancy main station and disposed redundant communication network;
4. adopt the exchanges data of completion of heterogeneous networks communications protocol and on-the-spot various device, strengthened the extensibility of the utility model.
Description of drawings
Fig. 1 (a) is first figure of the distributed centralized control system block diagram of a kind of small steam turbine of the utility model;
Fig. 1 (b) is second figure of the distributed centralized control system block diagram of a kind of small steam turbine of the utility model of map interlinking 1 (a);
Fig. 2 is the power-supply system figure of the distributed centralized control system of a kind of small steam turbine of the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Shown in Fig. 1 (a) and (b), the distributed centralized control system of a kind of small steam turbine of the utility model comprises user terminal, program-controlled unit, interface unit, display unit, on-site signal supervision and regulates control module and power supply unit; Said power supply unit is used for keeping watch on and the power supply of adjusting control module to program-controlled unit, interface unit, display unit, on-site signal; Said on-site signal supervision is used for collection site simulating signal, switching value signal partly with the adjusting control module, also thinks situ part output adjusting control signal simultaneously; On-site signal keeps watch on that to carry out signal through said interface unit and program-controlled unit mutual with regulating control module; Said program-controlled unit also has signal with user terminal and is connected; Said interface unit also has signal with display unit and is connected.
Wherein on-site signal is kept watch on the adjusting control module and is comprised rotating machinery security monitoring device and regulation and control device of industrial turbine.Said rotating machinery security monitoring device (patent No. is 200720081515.4) is the Chinese utility model patent of my company's independent development; The security monitoring equipment that relates to a kind of electric power, the energy, chemical industry, steam turbine and other rotating machinery has 1 displacement input interface, 3 vibration signal input interfaces, 3 tach signal input interfaces and analog output interface circuit.The important operational factor that is mainly used in rotating machinery is kept watch on, is reported to the police, for example: vibration, axial displacement, it is poor to expand, rotating speed, parameters such as cylinder expansion, off-centre.
Said industrial steamer control set for adjusting (application number is CN201010126129.9) is the product of applying for patent of invention of my company's independent development; Isoparametric intelligent the adjusting and control of rotating speed, pressure, flow that is used for small steam turbine (compressor, fan blower, feed pump); Be the main opertaing device of small steam turbine operation, have tach signal input interface, analog quantity control signal output interface, switching value control signal output interface, switching value control signal input interface, switching value signal input interface and switching value signal output interface.Report the rotating signal that signal input interface is used for the collection site part; The switching value signal input interface is used for the switching value signal of collection site part; Switching value control signal output interface is used for to situ part output switching value control signal, and analog quantity control signal output interface is used for to situ part output analog quantity control signal.
Said interface unit comprises No. 1 substation, No. 2 substations, No. 3 substations and No. 4 substations.
Said No. 1 substation comprises substation interface module 1 and analog quantity load module 1; Said analog quantity load module is connected with the analog output interface circuit of rotating machinery security monitoring device; Substation interface module 1 is used for that to carry out signal mutual with said program-controlled unit.
Said No. 2 substations comprise substation interface module 2, analog quantity load module 2 and analog output module; Said analog quantity load module 2 is connected with the analog output interface circuit of rotating machinery security monitoring device; Substation interface module 2 is used for that to carry out signal mutual with said program-controlled unit; Analog output module is used for to situ part output analog control signal.
Said No. 3 substations comprise substation interface module 3 and switching input module; Said switching input module is connected with the switching value signal output interface of industrial steamer control set for adjusting; Industry steamer control set for adjusting transfers to substation through the switching value signal output interface No. 3 with the switching value signal of situ part; Substation interface module 3 is used for that to carry out signal mutual with said program-controlled unit.
Said No. 4 substations comprise substation interface module 4, switching value output module; Said switching value output module is connected with the switching value control signal input interface of industrial steamer control set for adjusting, exports the switching value control signal to industrial steamer control set for adjusting; Substation interface module 4 is used for that to carry out signal mutual with said program-controlled unit.
No. 4 substation also has RS-485 module, CANOPEN module and DiviceNet module.
Said display unit is a combined light word warning device, and the switching value output module of said 4 substations also is connected with combined light word warning device, is used for the display alarm signal.Combined light word warning system (patent No. is 2,008 20223475.7) is the utility model patent product of my company's independent development; Relate to the out-of-limit warning indicating equipments of industry procedure parameter such as a kind of electric power, chemical industry, oil, mine, metallurgy, light textile, automatically important parameter off-limit alarm indication in the control of the industrial process that is mainly used in above-mentioned industry.
Said program-controlled unit comprises A main website and B main website; Described two main websites all have the ethernet communication module of power module, central processing unit, 2 redundant configuration; Having the MPI network between said A main website and the B main website is connected.
Power module in said A main website and the B main website is respectively central processing unit, the ethernet communication module for power supply in its place main website.
It is mutual that central processing unit in the A main website carries out signal through the substation interface module in a PROFIBUS bus and said 4 substations; It is mutual that ethernet line and the user terminal of the ethernet communication module of two redundant configuration in the A main website through two redundant configuration carries out signal.
It is mutual that central processing unit in the B main website carries out signal through the substation interface module in another PROFIBUS bus and said 4 substations; It is mutual that ethernet line and the user terminal of the ethernet communication module of two redundant configuration in the B main website through described two redundant configuration carries out signal.
Said user terminal or engineer station comprise the man machine operation interface of LCD, A4 color laser printer and independent development, and the warning picture in the operation interface has guaranteed the integrality of warning message.
The combined light word warning device of said in addition 3 * 4 arrays shows crucial warning message; Have the resolution height, the response time is short, low in energy consumption, the life-span is long; And possess head and go out functions such as indication, signal memory, warning affirmation, noise reduction and system test; Adopt combined light word warning system to show fault important in the native system and stopping signal, the site operation personnel is aroused attention and in time take corresponding measure, prevent unnecessary tripping operation action.
Information interaction in the utility model between each module is such; The supervisory signal of situ part (as: vibration, axial displacement, rotating speed etc.); Module collection, filtering, computing by corresponding in the rotating machinery security monitoring device make its 4--20mA current signal that becomes standard, and the module amount signal after the processing is input in the analog quantity load module in No. 1 substation in the interface unit, No. 2 substations; After No. 1 substation, No. 2 substations carry out processing such as AD conversion, the amplification of electric signal appropriateness to the analog signals that receives; Result is passed through fieldbus through its substation interface module, and for example: the PROFIBUS bus is transferred to A main website and B main website.
Central processing unit in 2 main websites is analyzed simultaneously to the received signal; Comprehensive analysis processing; Judge the signal receive whether reach control require or occur unusual, last A, B main website output control signal, and be transferred to analog output module in No. 2 substations through the substation interface module; Carry out Signal Spacing, conversion by this module, be used for the situ part opertaing device and make corresponding actions.
On-the-spot tach signal is done supervision usefulness except being input to rotating machinery security monitoring device; Also having the two-way input to do control through the tach signal input interface to regulation and control device of industrial turbine uses; After regulation and control device of industrial turbine collects on-the-spot tach signal; Calculate after its analog quantity control signal output interface is exported the pitch aperture that 1 road analog signals is used to control the scene through the inner PID of device, to reach height control on-the-spot rotating speed.
After the switching value signal input apparatus of regulation and control device of industrial turbine receives the on-the-spot switching value signal that is incorporated into the power networks; Regulation and control device of industrial turbine begins the electrical power signal of collection site; Simultaneously part switching value signal (as: signal such as shut down, reset) is input to switching input module in No. 3 substations; By this module signal is done isolation processing; Result is transferred to A main website and B main website through the substation interface module, and the central processing unit in 2 main websites is analyzed comprehensive analysis processing simultaneously to the received signal; Judge whether the signal that receives reaches control and require perhaps to occur unusual; Export control signal afterwards and be transferred to switching value output module in No. 4 substations through the substation interface module, this module is carried out after the isolation processing outputing to regulation and control device of industrial turbine through switching value control signal input interface to signal and is used to control it and acts accordingly, and regulation and control device of industrial turbine outputs to situ part through switching value control signal input interface with control signal again; Simultaneously key signal is outputed to combined light word warning system, be used for alarm indication.
Can part signal be expanded in the on-the-spot instrument through the RS-485 module in No. 4 substations and to show; Perhaps be used for starting, stopping field apparatus; Also can be through configuration CANOPEN module frame CANOPEN communication network; Realize the remote data transmission of the utility model and peripheral security system or main equipment, also configurable DiviceNet module frame DiviceNet communication network is used to control commercial units such as all kinds process sensor, miniature actuator, valve group and intelligence instrument; Strengthened the expanded function of the utility model; Adopt these standard communications protocol and field intelligent instrument or device talk can reduce a large amount of hardwires, both reduced system cost, reduced accident probability again.
On-the-spot all data all can be transferred among the engineer station through the ethernet communication in A, the B main website; Control program in the engineer station cooperates the online demonstration of man-machine picture, and operating personnel also can pass through man-machine picture modification parameter value, are used for the On-line Control field apparatus; And equal configuring redundancy ethernet communication module in the main website; Form redundant ethernet communication network, when master network lost efficacy, take over control thereby backup network puts into operation automatically.Operating personnel are equipment running process data such as print fault, alarm logging and operation curve as required, are convenient to data are done labor.Be redundant configuration between A main website and the B main website, normal condition, the A main website is main; The B main website is subsequent use, any one component faults in main website, and system will switch to duty with the B main website automatically; When two main websites all normal; Also can realize the main preparation system manual switchover, through MPI network communication mode transmission data, realize the data sync between the main website between the central processing unit in two main websites through man-machine picture.
But the various types of signals of the utility model collection site can be the thermocouple signals of standard 4～20mA current signal, two-wire system transducer signal, thermal resistance, various calibration, through software setting.The output signal type also can freely be provided with through software.
As shown in Figure 2; The power-supply system of the utility model adopts topological structure; Accomplish the discrete control of power supply to greatest extent; And (the power of alterating and direct current switching device shifter is the utility model patent product of my company's independent development to use special-purpose power of alterating and direct current switching device shifter; The supply unit that relates to industry opertaing devices such as a kind of energy, chemical industry, the power supply that is mainly used in electric devices such as steam turbine digital electrohydraulic controller, steam turbine monitor protection system and turbine emergency interrupting system provides, power fail, dead electricity are reported to the police and online unperturbed switches.Patent name is: multi-functional double-power supply switching device; The patent No. is 200820223473.8), realize the redundancy and the automatic switchover of power supply, guarantee that switching time is in 30ms; Make system's ability safe operation; The scene provides two-way 220VAC power supply, converts redundant interchange out-put supply and dc output power to through the power of alterating and direct current switching device shifter, and respectively through ac power output and dc power output end output.The power of alterating and direct current switching device shifter has independently the direct current module and exchanges module and is inserted in the cabinet, but the on-line replacing module; The inner AC power failure switch boards of power of alterating and direct current switching device shifter can realize importing power supply overvoltage, under-voltage protection function; The power supply switch boards combines the cabinet panel pilot lamp can realize importing power fail in the cabinet, dead electricity is reported to the police; The 220VAC power supply of power of alterating and direct current switching device shifter output is respectively rotating machinery security monitoring device, A main website, B main website power supply is provided; The 24VDC power supply of power of alterating and direct current switching device shifter output is respectively regulation and control device of industrial turbine, No. 1 substation, No. 2 substations, combined light word warning system, No. 3 substations, No. 4 substations power supply is provided.
And each module in the utility model and the solenoid valve of situ part all have insurance terminal separately; The power supply of power of alterating and direct current switching device shifter output is described rotating machinery security monitoring device, A main website, B main website, regulation and control device of industrial turbine, No. 1 substation, No. 2 substations, combined light word warning system, No. 3 substations, No. 4 power supply is provided through the insurance terminal; Realized that each module and situ part solenoid valve are independently-powered in the utility model system; But each module on-line replacing is convenient to maintenance, prevents the problems such as unusual tripping operation that cause because of power issue; For example: when online time dress program of in running order central processor CPU; System will activate subsequent use central processor CPU automatically, make it in running order, if this moment is because other module failures cause the abnormal electrical power supply of backup processor; Backup processor is with cisco unity malfunction so, and the active and standby switching failure of processor may cause hang-up.
Each solenoid valve of situ part is the on-the-spot valve of accomplishing various functions; These valves are passive; And power ratio is bigger in the time of action; Need be for it provide the power supply that can drive valve, each solenoid valve all is furnished with relay and contactor, and the closure through pilot relay and contactor is the coil power supply of solenoid valve.Part adopts the direct supply of 110V to be connected to relay and contactor through the insurance terminal at the scene, further is solenoid valve.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203699611U CN202257243U (en) | 2011-09-28 | 2011-09-28 | Distributed Centralized Control System for Small Steam Turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203699611U CN202257243U (en) | 2011-09-28 | 2011-09-28 | Distributed Centralized Control System for Small Steam Turbine |
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| Publication Number | Publication Date |
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| CN202257243U true CN202257243U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203699611U Expired - Fee Related CN202257243U (en) | 2011-09-28 | 2011-09-28 | Distributed Centralized Control System for Small Steam Turbine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104217548A (en) * | 2014-09-02 | 2014-12-17 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Method and device for processing first-out alarm of gas turbines |
| CN109782637A (en) * | 2018-12-03 | 2019-05-21 | 哈尔滨汽轮机厂有限责任公司 | The big protection signal interface unit of turbine shaft vibration |
-
2011
- 2011-09-28 CN CN2011203699611U patent/CN202257243U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104217548A (en) * | 2014-09-02 | 2014-12-17 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Method and device for processing first-out alarm of gas turbines |
| CN109782637A (en) * | 2018-12-03 | 2019-05-21 | 哈尔滨汽轮机厂有限责任公司 | The big protection signal interface unit of turbine shaft vibration |
| CN109782637B (en) * | 2018-12-03 | 2021-08-17 | 哈尔滨汽轮机厂有限责任公司 | Large protection signal interface device for shaft vibration of steam turbine |
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Granted publication date: 20120530 Termination date: 20140928 |
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