CN204740494U - Energy -efficient central heating automated control system - Google Patents
Energy -efficient central heating automated control system Download PDFInfo
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- CN204740494U CN204740494U CN201520505587.1U CN201520505587U CN204740494U CN 204740494 U CN204740494 U CN 204740494U CN 201520505587 U CN201520505587 U CN 201520505587U CN 204740494 U CN204740494 U CN 204740494U
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- central heating
- network switch
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- control system
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model relates to an energy -efficient central heating automated control system, its major technical features is: including main network switch, PC engineer station, operator work station, printer and on -the -spot network switch, on -the -spot PLC control station and field device, PC engineer station, operator work station, printer and link together through main network switch and constitute the central heating central control center, on -the -spot network switch, on -the -spot PLC control station and field device link together and constitute the central heating heat exchange station field control system, are connected through on -the -spot network switch between a plurality of central heating heat exchange station field control systems, and every on -the -spot network switch all is connected with main network switch. The utility model relates to a rationally, when effectively guaranteeing boiler safety, stability, economical operation, realize the intelligent and automatic optimizing control function of boiler, improved coal fired boiler's combustion efficiency, reached the purpose of energy saving and emission reduction energy saving.
Description
Technical field
The utility model belongs to central heating technical field, especially a kind of energy-efficient central heating automation control system.
Background technology
The energy development of China and the policy mandates all trades and professions of exploitation all will carry out corresponding energy-saving and emission-reduction measure, and in the building energy consumption of northern area, the energy-saving and emission-reduction task that heating energy consumption is born occupies suitable ratio.So, whether centralized heating boiler plant can regulate and control timely just to seem of crucial importance according to the change of the change of outdoor temperature, end load in the middle of design and operation, and whether this energy resource consumption being directly connected to fuel and water power etc. can control in energy-conservation state.
At present, central heating control model divides thermal source and heat supply network two parts: heat supply network part ensures the distribution of heat, with uniform distribution gross heat input, realizing each thermal substation heating effect unanimously for regulating target, not relating to concrete heating index.And the total heat requirement of heat supply network is by the performance prediction to thermal load, and source part is directly regulated realizes.Heat distribution between each thermal substation is by each station oneself independently control module realization.Namely according to outdoor temperature determination secondary side supply water temperature value, then ensure that secondary side supply water temperature is setting value by temperature-sensing valve change primary side flow.In order to make temperature-sensing valve working stability, action accurately with from the impact of large net pressure surge, a self-power differential pressure flow control valve need be added to control the pressure reduction at temperature-sensing valve two ends for steady state value.When heat supply abundance, each thermal substation meets the requirement change of thermal load by self automatic adjustment.When heat supply deficiency, the self-power differential pressure excess-flow valve at each station will play the effect of the maximum flow limiting each station, thus limits the use heat at each station, realizes the effect of evenly sharing shortage of heat.
On the whole, mainly there is following problem in existing central heating control model: automatic control level is low, and system thermal efficiency is low, and room temperature is uneven in temperature, not only many consumptions energy at double.Current heating charging presses area charging mostly, is helpless to the awareness of saving energy of user, to such an extent as to occurs some abnormal phenomenons.Window as room temperature is too high, the too low complaint of room temperature, can only strengthen heating load as far as possible, causes the repetition and waste that efficiency low and high energy consumes.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of reasonable in design, effectively can meet workload demand and improve the energy-efficient central heating automation control system of boiler hot burning efficiency.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of energy-efficient central heating automation control system, comprises master network switch, PC engineer station, operator workstation, printer and field network switch, on-the-spot PLC control station and field apparatus, PC engineer station, operator workstation, printer are linked together by master network switch and form central heating CCC, field network switch, on-the-spot PLC control station and field apparatus link together and form central heating heat exchange station field control system, be connected by field network switch between multiple central heating heat exchange station field control system, each field network switch is all connected with master network switch, on the one hand, central heating heat exchange station field control system sends the duty at central heating heat exchange station scene to central heating CCC, receive the control command of central heating CCC on the other hand, realize the controlling functions to on-the-spot PLC control station.
And, all adopt optical fiber solutions to be connected between described field network switch and between field network switch with master network switch.
And described on-the-spot PLC control station comprises Boiler PLC Control station and the public control station of Boiler PLC.
And, described Boiler PLC Control station and the public control station of Boiler PLC connect and compose by CPU module and power module, extension storage card, Analog input mModule, analog output module, switching input module, switching value output module, and Analog input mModule, analog output module, switching input module are connected with field apparatus respectively with switching value output module.
And described field apparatus comprises temperature sensor, pressure transducer, flow sensor, oxygen conten analyser, volume adjusting apparatus, coal quantity regulating device, small pump, ebullator and converter plant.
Advantage of the present utility model and good effect are:
1, this control system adopts central heating CCC and central heating heat exchange station to carry out real-time Communication for Power to control central heating stations, while effectively ensureing boiler safety, stable, economical operation, achieve boiler intelligent and automatic optimal controlling functions, improve the burning efficiency of coal-burning boiler, reach the object of energy-saving and emission-reduction economize energy, also mitigate the labour intensity of operating personnel simultaneously.
2, this control system can according to outdoor temperature curve and every day load curve calculate optimum temperature setting value, complete temperature automatic following and control, make the load of combustion system and the coordination of fuel reach most perfect condition, farthest realize economical combustion.
Accompanying drawing explanation
Fig. 1 is system connection diagram of the present utility model;
Fig. 2 is the temperature Principles of Regulation schematic diagram of central heating heat exchange station;
Fig. 3 is the boiler furnace negative pressure Principles of Regulation schematic diagram of central heating heat exchange station;
Fig. 4 is the confession backwater level pressure Principles of Regulation schematic diagram of central heating heat exchange station.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is further described:
A kind of energy-efficient central heating automation control system, as shown in Figure 1, is connected and composed by master network switch, PC engineer station, operator workstation, printer and field network switch, on-the-spot PLC control station and field apparatus.Wherein, PC engineer station, operator workstation, printer are linked together by master network switch and form central heating CCC, PC engineer station completes the functions such as data display and management, operator workstation has two for responsible monitor data, and printer has two to realize printout function, field network switch, on-the-spot PLC control station and field apparatus link together and form central heating heat exchange station field control system, each central heating heat exchange station includes field network switch, on-the-spot PLC control station and field apparatus, be connected by field network switch between each central heating heat exchange station, each field network switch is all connected with master network switch, realize the communication function with central heating CCC, send the duty at central heating heat exchange station scene to central heating CCC on the one hand, receive the control command of central heating CCC on the other hand, realize the controlling functions to on-the-spot PLC control station.All adopt optical fiber solutions to be connected between field network switch and between field network switch with master network switch, field network switch and master network switch all adopt Cisco SLM224G2 switch.
Described on-the-spot PLC control station comprises two Boiler PLC Control stations and a public control station of Boiler PLC.Every platform Boiler PLC Control station and the public control station of Boiler PLC connect and compose by PLC and correlation module, correlation module comprises power module, extension storage card, Analog input mModule, analog output module, switching input module and switching value output module and links together, Analog input mModule, analog output module, switching input module are connected with field apparatus respectively with switching value output module, be provided with on-site supervision software and carry out data acquisition and field apparatus monitoring function to field apparatus in PLC.Field apparatus comprises various temperature sensor, pressure transducer, flow sensor, oxygen conten analyser, volume adjusting apparatus, coal quantity regulating device, small pump and ebullator, converter plant etc., and Boiler PLC Control station can the parameter such as collecting temperature, pressure, flow, flue gas oxygen content, fire grate rotating speed, coal input quantity control volume adjusting apparatus, coal quantity regulating device, small pump, ebullator, frequency converter etc. and carry out regulable control to boiler combustion automatically.Wherein, two Boiler PLC Control stations control two boilers respectively, and controlled quentity controlled variable comprises boiler Inlet and outlet water temperature, furnace pressure, Inlet and outlet water pressure, the blow rate required, absorbing quantity, fire grate rotating speed and layering coal supply etc.; Monitoring parameter comprises: halved tie tube inlet cigarette pressure, halved tie tube inlet cigarette temperature, furnace outlet cigarette pressure, furnace outlet gas temperature degree, fan blower running status, induced draft fan running status, fire grate running status and layering coal supply running status etc.The operation of the public control station of Boiler PLC mainly ebullator and small pump, and outdoor temperature, the total supply water temperature of a secondary net, the total return water temperature of a secondary net, outlet main-piping pressure, the total pressure of supply water of a secondary net and the total pressure of return water of a secondary net signals collecting.
In the present embodiment, Schneider Premium series of PLC selected by on-the-spot PLC control station, two Boiler PLC Control station concrete configurations are: power module model TSXPSY2600M, CPU model TSXP572634M, a DI module (model is TSXDEY32D2K), a DO module (model is TSXDSY32T2K), four AI modules (model is TSXAEY800), an AO module (model is TSXASY800).Being configured to of the public control station of Boiler PLC: power module model TSXPSY2600M, CPU model TSXP572634M, a DI module (model is TSXDEY32D2K), a DO module (model is TSXDSY32T2K), two AI modules (model is TSXAEY800), an AO module (model is TSXASY800).
Central heating CCC and central heating heat exchange station field control system carry out real-time Communication for Power, realize the data acquisition to field apparatus and monitoring function, comprise the automatic regulation function to field apparatus, combustion chamber draft regulatory function and supply backwater level pressure regulatory function etc., being described respectively below:
As shown in Figure 2, automatic regulation function is by temperature parameter, fire grate rotating speed, coal input quantity, the parameter acquisitions such as intake, utilize coal input quantity and fire grate rotating speed, the one-to-one relationship that thickness of coal seam exists and intake is same and the one-to-one relationship of the rotating speed of fan blower, adopt self-optimizing control scheme, that is: when putting into operation for the first time, rule of thumb and the set-point that initial setting adjusts wind-coal ratio can be groped, system drop into automatically and stable after, start by set date is from optimizing function, according to the change of fire box temperature and change automatic fine tuning wind-coal ratio extremely the best or suboptimum of flue gas oxygen content, reach economical combustion.Control system, according to the demand of consumption load and speed, automatically can regulate the air quantity of drum, air inducing, reduce or heighten the air quantity of bulging air inducing at random, slow down or accelerate the gait of march of fire grate, and spray into the coal dust amount in stove.Thickness of coal seam is regulated again by operating condition, regulate according to the corresponding thickness of coal seam of economical combustion in control algolithm, the coal at high temperature Thorough combustion of such bottom, substantially increase burning of coal utilization factor, make boiler be in optimal economic running status, decrease the coal amount into stove, improve the thermal efficiency and the heating power of boiler, reach the effect of economizing on coal and economizing on electricity, also efficiently solve the contradiction of instantaneous load consumption demand and boiler production capacity deficiency.
As shown in Figure 3, combustion chamber draft regulatory function is that the change by gathering absorbing quantity carries out regulable control to furnace pressure, because the change reflection of combustion chamber draft is sensitiveer, can be used as an independent loop to regulate, absorbing quantity is along with the corresponding adjustment of change do of the blow rate required, make combustion chamber draft remain at certain pressure value, maintain the stability of whole combustion system.According to actual conditions, the change curve of boiler outlet water temperature degree with outdoor temperature can be formulated, self-con-tained unit is made automatically to adjust the set-point of boiler outlet water temperature degree according to the change of outdoor temperature, both real-time adjustment had been accomplished, avoid again artificially revising the comparatively large disturbances that set-point brings to system, simultaneously economize energy.
As shown in Figure 4, for backwater level pressure regulatory function be by water circulating pump regulate with keeping system for pressure of return water stablize, for the normal heat supply of system provides safeguard.Control to be ensure important step that is normal, stable heating due to small pump and water circulating pump, small pump and water circulating pump control all to adopt Set-value adjustment.According to the pressure of pressurization point, regulate small pump rotating speed by frequency converter, timely amount of makeup water, anti-locking system lack of water, ensure system safety operation.
It is emphasized that; embodiment described in the utility model is illustrative; instead of it is determinate; therefore the utility model is not limited to the embodiment described in embodiment; every other embodiments drawn according to the technical solution of the utility model by those skilled in the art, belong to the scope of the utility model protection equally.
Claims (5)
1. an energy-efficient central heating automation control system, is characterized in that: comprise master network switch, PC engineer station, operator workstation, printer and field network switch, on-the-spot PLC control station and field apparatus, PC engineer station, operator workstation, printer are linked together by master network switch and form central heating CCC, field network switch, on-the-spot PLC control station and field apparatus link together and form central heating heat exchange station field control system, be connected by field network switch between multiple central heating heat exchange station field control system, each field network switch is all connected with master network switch, on the one hand, central heating heat exchange station field control system sends the duty at central heating heat exchange station scene to central heating CCC, receive the control command of central heating CCC on the other hand, realize the controlling functions to on-the-spot PLC control station.
2. energy-efficient central heating automation control system according to claim 1, is characterized in that: all adopt optical fiber solutions to be connected between described field network switch and between field network switch with master network switch.
3. energy-efficient central heating automation control system according to claim 1, is characterized in that: described on-the-spot PLC control station comprises Boiler PLC Control station and the public control station of Boiler PLC.
4. energy-efficient central heating automation control system according to claim 3, it is characterized in that: described Boiler PLC Control station and the public control station of Boiler PLC connect and compose by CPU module and power module, extension storage card, Analog input mModule, analog output module, switching input module, switching value output module, and Analog input mModule, analog output module, switching input module are connected with field apparatus respectively with switching value output module.
5. energy-efficient central heating automation control system according to claim 1, is characterized in that: described field apparatus comprises temperature sensor, pressure transducer, flow sensor, oxygen conten analyser, volume adjusting apparatus, coal quantity regulating device, small pump, ebullator and converter plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520505587.1U CN204740494U (en) | 2015-07-14 | 2015-07-14 | Energy -efficient central heating automated control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520505587.1U CN204740494U (en) | 2015-07-14 | 2015-07-14 | Energy -efficient central heating automated control system |
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| CN204740494U true CN204740494U (en) | 2015-11-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066458A (en) * | 2015-08-26 | 2015-11-18 | 天津光彩伟业科技有限公司 | Energy-saving control system for centralized heating boiler |
| CN107764075A (en) * | 2016-08-23 | 2018-03-06 | 沈阳铝镁设计研究院有限公司 | Pot type burner automatic temperature control system |
| CN109869634A (en) * | 2019-01-28 | 2019-06-11 | 中国石油天然气集团公司 | A kind of natural gas line divides defeated realization system automatically and divides defeated implementation method automatically |
| CN110375370A (en) * | 2019-08-16 | 2019-10-25 | 烟台华蓝新瑞节能科技有限公司 | A kind of wisdom heat supply samming managing and control system |
-
2015
- 2015-07-14 CN CN201520505587.1U patent/CN204740494U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066458A (en) * | 2015-08-26 | 2015-11-18 | 天津光彩伟业科技有限公司 | Energy-saving control system for centralized heating boiler |
| CN107764075A (en) * | 2016-08-23 | 2018-03-06 | 沈阳铝镁设计研究院有限公司 | Pot type burner automatic temperature control system |
| CN109869634A (en) * | 2019-01-28 | 2019-06-11 | 中国石油天然气集团公司 | A kind of natural gas line divides defeated realization system automatically and divides defeated implementation method automatically |
| CN110375370A (en) * | 2019-08-16 | 2019-10-25 | 烟台华蓝新瑞节能科技有限公司 | A kind of wisdom heat supply samming managing and control system |
| CN110375370B (en) * | 2019-08-16 | 2024-03-08 | 烟台华蓝新瑞节能科技有限公司 | Wisdom heat supply samming management and control system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 Termination date: 20200714 |
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| CF01 | Termination of patent right due to non-payment of annual fee |