CN106066656A - The temperature control set for adjusting of a kind of heat exchange station automatic control system and method - Google Patents
The temperature control set for adjusting of a kind of heat exchange station automatic control system and method Download PDFInfo
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- CN106066656A CN106066656A CN201610669062.0A CN201610669062A CN106066656A CN 106066656 A CN106066656 A CN 106066656A CN 201610669062 A CN201610669062 A CN 201610669062A CN 106066656 A CN106066656 A CN 106066656A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
- G05D23/32—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature with provision for adjustment of the effect of the auxiliary heating device, e.g. a function of time
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feedback Control In General (AREA)
Abstract
The invention belongs to heat exchange station control system technical field, temperature control set for adjusting and the method for a kind of heat exchange station automatic control system are disclosed, what the method used control device includes the constant supply water temperature sensor of the electric control valve of heat exchanger primary side, secondary side, analysis and processing module, regulation valve module, control module, touch screen, and described touch screen is connected with the electric control valve of heat exchanger primary side by analysis and processing module, regulation valve module, control module；The temperature acquisition end of analysis and processing module is connected by the supply water temperature sensor that holding wire is constant with secondary side；It is provided with supply water temperature on the human-computer interaction interface of described touch screen and sets the parameter logistic gain setting membrane keyboard of membrane keyboard and regulation valve.The present invention ensure that secondary side has a constant supply water temperature, it is ensured that the thermodynamic equilibrium of heat supply network, it is ensured that heating system can be run safely and reliably, and it makes simply, water pressure fluctuations is little, and response is fast, and energy-saving effect is obvious.
Description
Technical field
The invention belongs to heat exchange station control system technical field, relate generally to the temperature of a kind of heat exchange station automatic control system
Control set for adjusting and method.
Background technology
Central heating is the energy-conservation and environmental practice that country widelys popularize, along with the continuous expansion of concentrated supply of heating in the city scale
Greatly, the management heat distribution pipe network of science has the most great economic and social benefit.Heat exchange station and hot water pipe net are to connect thermal source
With the important step of heat user, whole heating system has very important effect.
The heating system of China is relatively backward at present, is embodied in heating quality poor, i.e. room temperature is uneven in temperature, and system is imitated
Rate is low, and user can not sets itself and regulating the room temperature；Lack control device, only simple regulating measure, do not have
Thermostat, heat supply is not enough and excessive time, there is no effective regulating measure；Lack measurement means, do not have meterage to cause use
Family is the most energy-conservation, also results in management personnel and lacks data and carry out operational management.
Summary of the invention
For solving above-mentioned technical problem, the purpose of the present invention is to propose to the temperature regulation of a kind of heat exchange station automatic control system
Control device and method.
The present invention adopts the following technical scheme that for completing its invention task
A kind of temperature control set for adjusting of heat exchange station automatic control system, including: the electric control valve of heat exchanger primary side, two
The constant supply water temperature sensor in secondary side, analysis and processing module, regulation valve PID module, control module, touch screen, described touch
Shield and be connected with the electric control valve of heat exchanger primary side by analysis and processing module, regulation valve PID module, control module；Analyze
The temperature acquisition end of processing module is connected by the supply water temperature sensor that holding wire is constant with secondary side；Described touch screen man-machine
It is provided with supply water temperature 1,2,3,4 on interactive interface and sets membrane keyboard, the regulation pid parameter proportional gain of valve, the time of integration, micro-
Membrane keyboard is set between timesharing.
The temperature control set for adjusting of a kind of heat exchange station automatic control system, described regulation valve PID module is by regulating valve
Pid parameter proportional gain module, the module time of integration, module composition derivative time.
The temperature control set for adjusting of a kind of heat exchange station automatic control system, described analysis and processing module includes: effectiveness
Judging treatmenting module, Filtering Processing processing module, magnitude transform processing module, PID calculate processing module, described Effective judgement
Processing module calculates processing module by Filtering Processing processing module, magnitude transform processing module with PID and is connected；At PID calculating
Reason module data end is connected with memory module, touch display screen respectively.
The temperature adjustment control method of a kind of heat exchange station automatic control system, is to use secondary side to have a constant water supply
Temperature, the major function at the electric control valve of heat exchanger primary side installation is by adjusting valve opening, adjusting a pipe network
Hot water flow, controls the secondary heating load of heat exchanger, it is ensured that heating quality；It is through the temperature that controller is arranged according to touch screen
Spend and compare with actual secondary network supply water temperature, and carry out PID arithmetic, operation result is exported regulation valve 4-20mA letter
The aperture of number corresponding adjustment type electrodynamic valve 0 ~ 100%, realizes the steady of temperature by the aperture adjusting primary side electric control valve
Fixed, including:
(1) Non-follow control
Manual control mode is that Field Force manually selects control model, on the touchscreen the aperture setting value of input control valve,
Thus change the output valve of control module 4-20mA；
When the aperture setting value being in adjustment type electrodynamic valve increases, control module increases the value of mA the most lentamente, until defeated
After going out the mA value that setting value is corresponding, adjustment type electrodynamic valve is opened big to the aperture set；
When the aperture setting value being in adjustment type electrodynamic valve reduces, control module is persistently reduced slowly the value of mA, until defeated
After going out the mA value that setting value is corresponding, adjustment type electrodynamic valve cuts out to the aperture set；
When system dead electricity, electric control valve cuts out；
(2) automatically control
Automatic control mode is that Field Force manually selects control model, uses PID tracing control function automatically high to primary side
Warm water pipe network outlet electric control valve is controlled, it is achieved heat exchanger secondary side hot water outlet temperature automatically controls, and meets and uses
Family room temperature requirement；
Pid algorithm: PID tracing control function is ratio, integration, differential control；In continuous control system, the control of analog pid
Rule form processed is(3-1)
In formula (3-1),It it is deviation input function；It it is actuator output function；It it is proportionality coefficient；It it is integration
Time constant；It it is derivative time constant；Formula (3-1) is analog quantity expression formula, and the difference equation after discrete is
(3-2)
In formula, T is the sampling period；K is sampling sequence number, k=0,1,2 ... i；U<k>it is output valve during sampling instant k；E(k) it is
Deviation value during sampling instant k；Deviation value when being e(k-1) sampling instant k-1.Formula (3-2) is reduced to recurrence Relation shape
Formula:
(3-3)
In formula (3-3), SpIt it is adjuster settings；It it is value of feedback during sampling instant k；It it is sampling instant
Value of feedback during k-1；It it is value of feedback during sampling instant k-2；Formula (3-3) is used as programmed algorithm and uses；
According to heat exchange station system, the regulation of temperature is controlled requirement, pid parameter is configured, first Set scale COEFFICIENT KpWith
Integration Ti, T derivative timeD, touching open window in display screen, operator can be revised by touch, pre-defined " water supply
Temperature 1 sets, supply water temperature 2 sets, supply water temperature 3 sets, supply water temperature 4 sets, i.e. according under varying environment and season
Outdoor temperature sets 4 expected values, touches open window in display screen, and tangible being revised as of operator expects setting value
Sp, by setting value SpWith actual measured value f(k) secondary network supply water temperature k compare, calculate control deviation e(k), will control
Deviation is converted to controlled variable u<k>output to governor valve control valve opening, and then changes actual measured value f(k) two
Secondary net supply water temperature k, in order to quick smoothly actual measured value fk can be adjusted to setting value, it is ensured that secondary side have one constant
Supply water temperature.
Owing to using technical scheme as above, the present invention has a following superiority:
The temperature control set for adjusting of a kind of heat exchange station automatic control system and method, it is possible to by pre-setting " for water temperature
Degree 1 sets, supply water temperature 2 sets, supply water temperature 3 sets, supply water temperature 4, i.e. according to the outdoor temp under varying environment and season
Degree sets 4 expected values, it is ensured that secondary side has a constant supply water temperature.
The heat exchange station formed owing to present invention employs the temperature control set for adjusting of PID regulative mode automatically controls and is
System, it is ensured that the thermodynamic equilibrium of heat supply network, it is ensured that heating system can be run safely and reliably, it is achieved that in the case of unmanned
Long-range prison., water pressure fluctuations is little, and response is fast, and energy-saving effect is obvious.
Accompanying drawing explanation
Fig. 1 is heat exchange station system schematic diagram；
Fig. 2 is heat exchange station automatic control system schematic diagram；
Fig. 3 is the control system schematic diagram of primary side electric control valve.
Detailed description of the invention
In conjunction with the drawings and specific embodiments, the present invention is illustrated:
As shown in Figure 1, 2, 3, the temperature control set for adjusting of a kind of heat exchange station automatic control system, including: heat exchanger primary side
Electric control valve, the constant supply water temperature sensor of secondary side, analysis and processing module, regulation valve PID module, control module,
Touch screen, described touch screen is electronic with heat exchanger primary side by analysis and processing module, regulation valve PID module, control module
Regulation valve is connected；The temperature acquisition end of analysis and processing module is connected by the supply water temperature sensor that holding wire is constant with secondary side；
It is provided with supply water temperature 1,2,3,4 on the human-computer interaction interface of described touch screen and sets membrane keyboard, the pid parameter ratio of regulation valve
Gain, the time of integration, derivative time set membrane keyboard.
Described regulation valve PID module is by regulating the pid parameter proportional gain module of valve, the module time of integration, derivative time
Module forms.
Described analysis and processing module includes: Effective judgement processing module, Filtering Processing processing module, magnitude transform process
Module, PID calculate processing module, and described Effective judgement processing module is processed by Filtering Processing processing module, magnitude transform
Module calculates processing module with PID and is connected；PID calculates processing module data terminal and is connected with memory module, touch display screen respectively.
The temperature adjustment control method of a kind of heat exchange station automatic control system, is to use secondary side to have a constant water supply
Temperature, the major function at the electric control valve of heat exchanger primary side installation is by adjusting valve opening, adjusting a pipe network
Hot water flow, controls the secondary heating load of heat exchanger, it is ensured that heating quality；It is exactly the control to primary side electric control valve, logical
Cross the temperature that controller arranges according to touch screen to compare with actual secondary network supply water temperature, and carry out PID arithmetic, will fortune
Calculate result and export the aperture of regulation valve 4-20mA signal correspondence adjustment type electrodynamic valve 0 ~ 100%, by adjusting primary side electric adjustable
The aperture of joint valve realizes stablizing of temperature, including:
(1) Non-follow control
Manual control mode is that Field Force manually selects control model, on the touchscreen the aperture setting value of input control valve,
Thus change the output valve of control module 4-20mA；
When the aperture setting value being in adjustment type electrodynamic valve increases, control module increases the value of mA the most lentamente, until defeated
After going out the mA value that setting value is corresponding, adjustment type electrodynamic valve is opened big to the aperture set；
When the aperture setting value being in adjustment type electrodynamic valve reduces, control module is persistently reduced slowly the value of mA, until defeated
After going out the mA value that setting value is corresponding, adjustment type electrodynamic valve cuts out to the aperture set；
When system dead electricity, electric control valve cuts out；
(2) automatically control
Automatic control mode is that Field Force manually selects control model, uses PID tracing control function automatically high to primary side
Warm water pipe network outlet electric control valve is controlled, it is achieved heat exchanger secondary side hot water outlet temperature automatically controls, and meets and uses
Family room temperature requirement；
Pid algorithm: PID tracing control function is ratio, integration, differential control；In continuous control system, the control of analog pid
Rule form processed is(3-1)
In formula (3-1),It it is deviation input function；It it is actuator output function；It it is proportionality coefficient；It it is integration
Time constant；It it is derivative time constant；Formula (3-1) is analog quantity expression formula, and the difference equation after discrete is
(3-2)
In formula, T is the sampling period；K is sampling sequence number, k=0,1,2 ... i；U<k>it is output valve during sampling instant k；E(k) it is
Deviation value during sampling instant k；Deviation value when being e(k-1) sampling instant k-1.Formula (3-2) is reduced to recurrence Relation shape
Formula:
(3-3)
In formula (3-3), SpIt it is adjuster settings；It it is value of feedback during sampling instant k；It it is sampling instant
Value of feedback during k-1；It it is value of feedback during sampling instant k-2；Formula (3-3) is used as programmed algorithm and uses；
According to heat exchange station system, the regulation of temperature is controlled requirement, pid parameter is configured, first Set scale COEFFICIENT KpWith
Integration Ti, T derivative timeD, touching open window in display screen, operator can be revised by touch, pre-defined " water supply
Temperature 1 sets, supply water temperature 2 sets, supply water temperature 3 sets, supply water temperature 4 sets, i.e. according under varying environment and season
Outdoor temperature sets 4 expected values, touches open window in display screen, and tangible being revised as of operator expects setting value
Sp, by setting value SpWith actual measured value f(k) secondary network supply water temperature k compare, calculate control deviation e(k), will control
Deviation is converted to controlled variable u<k>output to governor valve control valve opening, and then changes actual measured value f(k) two
Secondary net supply water temperature k, in order to quick smoothly actual measured value fk can be adjusted to setting value, it is ensured that secondary side have one constant
Supply water temperature.
Man-machine interactive system is mainly made up of touch display screen, by communication topological structure and host computer processing module communication, complete
Become data exchange, both can monitor the ruuning situation of heat-exchange unit, it is also possible to adjust the running status of heat-exchange unit.Touch display
The interface of screen includes that the total figure of technological process shows, regulating loop shows, setting value shows, alarm logging, chart show,
Historical data can be carried out storage and retrieval.
The total figure of technological process shows: shows whole heat-exchange unit work overall process in picture, shows each process section in real time
Ruuning situation, including this process chart, all of equipment state, all of technological parameter and each detailed ginseng controlling loop
Number etc..So that operator can promptly and accurately grasp heat-exchange unit carrying out practically situation, it is possible to the fault to field apparatus
Carry out real-time diagnosis.
All of safe regulating loop shows: include all regulating loops, can revise setting value, control mode, regulation ginseng
Number etc..Need the parameter being entered touch display screen by input password that interface is set, it is simple to operator revises control parameter, operation
Convenient, flexible and there is defencive function.
Setting value shows, alarm logging: includes all regulating loops and controls the setting value in loop etc., control mode, tune
JIESHEN number and alarming value etc.；After occurring reporting to the police, operator can consult alarm history record, it is simple to accident analysis and eliminating.
The storage and retrieval of historical data: important data are carried out on-line storage.History report can be passed through or go through
The mode of history trend curve retrieves historical data.
Claims (4)
1. a temperature control set for adjusting for heat exchange station automatic control system, is characterized in that: including: the electricity of heat exchanger primary side
The constant supply water temperature sensor of dynamic regulation valve, secondary side, analysis and processing module, regulation valve PID module, control module, touch
Screen, described touch screen is by analysis and processing module, regulation valve PID module, control module and the motorized adjustment of heat exchanger primary side
Valve is connected；The temperature acquisition end of analysis and processing module is connected by the supply water temperature sensor that holding wire is constant with secondary side；Described
It is provided with supply water temperature 1,2,3,4 on the human-computer interaction interface of touch screen and sets the pid parameter ratio increasing of membrane keyboard, regulation valve
Benefit, the time of integration, derivative time set membrane keyboard.
The temperature control set for adjusting of a kind of heat exchange station automatic control system the most according to claim 1, is characterized in that: institute
State regulation valve PID module by regulating the pid parameter proportional gain module of valve, the module time of integration, module derivative time form.
The temperature control set for adjusting of a kind of heat exchange station automatic control system the most according to claim 1, is characterized in that: institute
State analysis and processing module to include: Effective judgement processing module, Filtering Processing processing module, magnitude transform processing module, PID count
Calculating processing module, described Effective judgement processing module is counted with PID by Filtering Processing processing module, magnitude transform processing module
Calculation processing module is connected；PID calculates processing module data terminal and is connected with memory module, touch display screen respectively.
4. a temperature adjustment control method for heat exchange station automatic control system, is characterized in that: be to use secondary side to have a perseverance
Fixed supply water temperature, the major function at the electric control valve of heat exchanger primary side installation is by adjusting valve opening, adjusts
Pipe network hot water flow, controls the secondary heating load of heat exchanger, it is ensured that heating quality；It is through controller according to touch screen
The temperature arranged compares with actual secondary network supply water temperature, and carries out PID arithmetic, and operation result exports regulation valve
4-20mA signal correspondence adjustment type electrodynamic valve 0～the aperture of 100%, realize temperature by the aperture adjusting primary side electric control valve
Stablizing of degree, including:
(1) Non-follow control
Manual control mode is that Field Force manually selects control model, on the touchscreen the aperture setting value of input control valve,
Thus change the output valve of control module 4-20mA；
When the aperture setting value being in adjustment type electrodynamic valve increases, control module increases the value of mA the most lentamente, until defeated
After going out the mA value that setting value is corresponding, adjustment type electrodynamic valve is opened big to the aperture set；
When the aperture setting value being in adjustment type electrodynamic valve reduces, control module is persistently reduced slowly the value of mA, until defeated
After going out the mA value that setting value is corresponding, adjustment type electrodynamic valve cuts out to the aperture set；
When system dead electricity, electric control valve cuts out；
(2) automatically control
Automatic control mode is that Field Force manually selects control model, uses PID tracing control function automatically high to primary side
Warm water pipe network outlet electric control valve is controlled, it is achieved heat exchanger secondary side hot water outlet temperature automatically controls, and meets and uses
Family room temperature requirement；
Pid algorithm: PID tracing control function is ratio, integration, differential control；In continuous control system, the control of analog pid
Rule form processed is(3-1)
In formula (3-1),It it is deviation input function；It it is actuator output function；It it is proportionality coefficient；When being integration
Between constant；It it is derivative time constant；Formula (3-1) is analog quantity expression formula, and the difference equation after discrete is
(3-2)
In formula, T is the sampling period；K is sampling sequence number, k=0,1,2 ... i；U<k>it is output valve during sampling instant k；E(k) it is
Deviation value during sampling instant k；Deviation value when being e(k-1) sampling instant k-1；
Formula (3-2) is reduced to recurrence Relation form:
(3-3)
In formula (3-3), SpIt it is adjuster settings；It it is value of feedback during sampling instant k；It is sampling instant k-
Value of feedback when 1；It it is value of feedback during sampling instant k-2；Formula (3-3) is used as programmed algorithm and uses；
According to heat exchange station system, the regulation of temperature is controlled requirement, pid parameter is configured, first Set scale COEFFICIENT KpWith
Integration Ti, T derivative timeD, touching open window in display screen, operator can be revised by touch, pre-defined " water supply
Temperature 1 sets, supply water temperature 2 sets, supply water temperature 3 sets, supply water temperature 4 sets, i.e. according under varying environment and season
Outdoor temperature sets 4 expected values, touches open window in display screen, and tangible being revised as of operator expects setting value
Sp, by setting value SpWith actual measured value f(k) secondary network supply water temperature k compare, calculate control deviation e(k), will control
Deviation is converted to controlled variable u<k>output to governor valve control valve opening, and then changes actual measured value f(k) two
Secondary net supply water temperature k, in order to quick smoothly actual measured value fk can be adjusted to setting value, it is ensured that secondary side have one constant
Supply water temperature.
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| CN201610669062.0A CN106066656A (en) | 2016-08-16 | 2016-08-16 | The temperature control set for adjusting of a kind of heat exchange station automatic control system and method |
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| CN107942648A (en) * | 2017-11-29 | 2018-04-20 | 中国飞机强度研究所 | A kind of extra space temperature field PID controller parameter setting method |
| CN109028248A (en) * | 2018-05-24 | 2018-12-18 | 合肥顺昌分布式能源综合应用技术有限公司 | A kind of residual neat recovering system and method based on distributed PID heat supply |
| CN109282352A (en) * | 2018-09-25 | 2019-01-29 | 中冶东方工程技术有限公司 | Control method for heat exchange station group |
| CN109764548A (en) * | 2019-01-09 | 2019-05-17 | 青岛海尔空调器有限总公司 | Energy resource system, the control method and device of energy resource system, storage medium |
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