CN106152250A - Blood circulation that a kind of heat exchange station automatically controls and circulation controlling means - Google Patents
Blood circulation that a kind of heat exchange station automatically controls and circulation controlling means Download PDFInfo
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- CN106152250A CN106152250A CN201610669141.1A CN201610669141A CN106152250A CN 106152250 A CN106152250 A CN 106152250A CN 201610669141 A CN201610669141 A CN 201610669141A CN 106152250 A CN106152250 A CN 106152250A
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- 230000017531 blood circulation Effects 0.000 title claims abstract description 19
- 230000004087 circulation Effects 0.000 title claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000012545 processing Methods 0.000 claims abstract description 48
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 9
- 230000003993 interaction Effects 0.000 claims abstract description 4
- 230000009467 reduction Effects 0.000 claims description 15
- 239000008400 supply water Substances 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 11
- 230000010354 integration Effects 0.000 claims description 9
- 238000012423 maintenance Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 6
- 230000006870 function Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 238000004134 energy conservation Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 4
- 230000010365 information processing Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000004044 response Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012905 input function Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
-
- 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
- F24D19/1012—Arrangement or mounting of control or safety devices for water heating systems for central heating by regulating the speed of a pump
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
- G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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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)
- External Artificial Organs (AREA)
Abstract
The invention belongs to heat exchange station control system technical field, automaton and the method for a kind of heat exchange station blood circulation are disclosed, the device that the method uses is made up of secondary side water supply, the pressure transducer of backwater, analysis and processing module, regulation valve module, control module, converter, and described touch screen is connected with water circulating pump by analysis and processing module, regulation valve module, control module, converter；The pressure end of analysis and processing module supplies water with secondary side respectively, pressure of return water sensor is connected, and analysis and processing module is controlled end and is connected with relief valve by control module；It is provided with secondary side on the human-computer interaction interface of touch screen and sets membrane keyboard, circulating pump PID proportional gain settings membrane keyboard for backwater pressure differential resetting membrane keyboard, overpressure protection pressure release.The present invention can avoid high pressure and damage line shock, it is ensured that the thermodynamic equilibrium of heating system and running safely and reliably, maintains the stable water pressure of secondary network, and its 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 blood circulation that a kind of heat exchange station automatically controls
And circulation controlling means.
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.
Current China's heating system is relatively backward, 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 blood circulation that a kind of heat exchange station automatically controls and follow
Ring control method.
The present invention adopts the following technical scheme that for completing its invention task
The automaton of a kind of heat exchange station blood circulation, by the secondary side pressure of supply water sensing being fixed on heat-exchange unit
Device, secondary side pressure of return water sensor, analysis and processing module, regulation valve PID module, control module, water circulating pump, converter,
Relief valve forms, and described touch screen is connected with converter by analysis and processing module, regulation valve PID module, control module, frequency conversion
The outfan of device is connected with 1# water circulating pump, 2# water circulating pump respectively；The pressure acquisition end of analysis and processing module is respectively by letter
Number line is connected with secondary side pressure of supply water sensor, secondary side pressure of return water sensor, and the control end of analysis and processing module passes through
Control module is connected with relief valve；It is provided with secondary side on the human-computer interaction interface of described touch screen to touch for backwater pressure differential resetting
Key, overpressure protection pressure release setting membrane keyboard, circulating pump PID proportional gain settings membrane keyboard, circulating pump PID set tactile derivative time
Touch key.
The automaton of a kind of heat exchange station blood circulation, described regulation valve PID module is by the pid parameter ratio regulating valve
Example gain module, the module time of integration, module composition derivative time.
The automaton of a kind of heat exchange station blood circulation, described analysis and processing module includes: Effective judgement processes
Module, Filtering Processing processing module, magnitude transform processing module, PID calculate processing module, described Effective judgement processing module
Calculate processing module by Filtering Processing processing module, magnitude transform processing module with PID to be connected；PID calculates processing module number
It is connected with memory module, touch display screen respectively according to end.
The autocontrol method of a kind of heat exchange station blood circulation, is to control converter by pressure signal to export, thus controls
The rotating speed of circulating pump processed, realizes the control to secondary network pressure of supply water, to maintain pressure differential resetting value；When a circulating pump cannot
When reaching required pressure by frequency conversion pressurization, controller makes another stand-by pump come into operation to pressurize, it is achieved intelligence
The Isobarically Control changed；Including: manually and automatically control；
When the pressure of return water of secondary side exceedes setting value: touching open window in display screen, operator touch the numerical value of amendment
Time, automatically open up relief valve；Or manual unlocking relief valve as required, it is to avoid secondary pressure is excessive, reaches to have pipeline
Effect protection；
(1) the VFC of circulating pump
The VFC of circulating pump uses PID regulation to control, and is to use PID tracing control function automatically to circulating pump motor
Frequency is controlled, it is achieved heat exchanger secondary side hot water pipe net, for the constant control of backwater pressure reduction, meets user's room temperature and requires also
Energy-conservation, consumption reduction, the effect of environmental protection are reached；
Utilize pid algorithm that pid parameter is configured, first Set scale COEFFICIENT KpWith integration Ti, T derivative timeD, i.e. touch
Open window modified values in display screen, predefined secondary network, for backwater pressure differential resetting, i.e. touches open window in display screen
Modified values, for expectation setting value Sp, the pressure transducer of the pressure transducer and backwater side that are arranged on secondary pipe network water supply side will
Hydraulic signal becomes signal of telecommunication 4-20mA, gives processing module and calculates the actually detected value of pressure difference, PID controller according to
Pressure differential resetting value and actually detected value carry out PID calculating and output signals to control module, and control module sends electricity to converter
Signal instruction 4-20mA, thus the frequency of Frequency Converter Control circulating pump motor；
When actually detected value secondary pressure reduction increases with preset value difference, converter output frequency rises, and circulating pump is operated in height
Frequency state, secondary network pressure of return water rises；
When actually detected value secondary network pressure reduction reduces with preset value difference, converter output frequency declines, and circulating pump is operated in
Low frequency state, secondary network pressure of return water declines；Go round and begin again, complete the tracking of the PID to circulating pump and automatically control, make circulating pump
It is operated in a more stable frequency state, it is achieved heat exchanger secondary side hot water pipe net is for the constant control of backwater pressure reduction；
By utilizing PID tracking control technology, control the temperature and pressure of water in conjunction with electric control valve and converter, also use
The information gathered is processed, analyzes by control module, logical judgment in situations such as circulating pump fault or working cycle overlength
Time send 1# circulating pump, control instruction that 2# circulating pump switches mutually, be controlled, control logic as follows:
1. the frequency conversion of circulating pump, the switching of power frequency duty:
Circulating pump priority task, in variable frequency work state, when control module receives the fault-signal of converter, sends instruction
Control circulating pump and be switched to power frequency duty, control converter and quit work and send warning instruction；
2. 1# circulating pump and the standby switching control of 2# circulating pump:
No matter circulating pump is operated in frequency conversion or power frequency state, when 1# circulating pump work in break down time, control module according to
The information processing that receives, judge to send instruction and control the work of 2# circulating pump, and make 1# circulating pump quit work, carry out warning and refer to
Showing, vice versa；
At heat exchange station run duration, for guaranteeing that circulating pump corrective maintenance work is carried out, make equipment in shape, control module
Working time timing to 1# pump, sends switching command and controls 2# pump work, the stopping of 1# pump after waiting the working time reaching to set
Work enters maintenance state；This control mode improves hommization, intelligence degree, beneficially corrective maintenance, extends pump
Service life；
(3) the control of relief valve,
Non-follow control, the operation button on switch board panel is placed in manual position and starts pressure release, sends out operator or operator on duty
Existing secondary side ductwork pressure is too high, uses manual pressure release when i.e. exceeding safety value；Automatically controlling, be placed in automatic position, secondary side returns
Water pressure, higher than touching the overpressure protection sluicing pressure that display screen sets, opens relief valve, less than protection pressure, closes pressure release
Valve；By the control to relief valve, maintain secondary network stable water pressure in safety range.
Owing to using technical scheme as above, the present invention has a following superiority:
Manually strong with automatic two ways protection main pipe rail and user's pipeline,
The automaton of the present invention a kind of heat exchange station blood circulation and method, be defeated by pressure signal control converter
Go out, thus control the rotating speed of circulating pump, realize exchanging the control of the secondary network pressure of supply water of heat stations blood circulation, to maintain pressure
Difference setting value；The heat exchange station automatic control system of present invention composition ensure that the thermodynamic equilibrium of heat supply network, it is possible to avoids high pressure pair
Line shock damages, it is ensured that heating system is run safely and reliably, maintains secondary network stable water pressure in safety range.This
Device utilizes the regulation with water pump that continuously adjusts of converter to combine in range of flow, it is ensured that constant pressure water supply, utilizes frequency conversion
Mode of speed regulation realizes constant voltage, constant temperature water supply, and water pressure fluctuations is little, and response is fast, and energy-saving effect is obvious；Achieve replenishing water tank of water fault,
The error protection that tap water cut-off, system blackout, circulating pump are abnormal, a secondary net is cut off the water.
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 blood circulation；
Fig. 4 is that blood circulation protection controls logic chart.
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, 4, the automaton of a kind of heat exchange station blood circulation, by the secondary being fixed on heat-exchange unit
Side pressure of supply water sensor, secondary side pressure of return water sensor, analysis and processing module, regulation valve PID module, control module, follow
Ring water pump, converter, relief valve form, described touch screen by analysis and processing module, regulation valve PID module, control module with
Converter is connected, and the outfan of converter is connected with 1# water circulating pump, 2# water circulating pump respectively；The pressure of analysis and processing module is adopted
Collection end is connected with secondary side pressure of supply water sensor, secondary side pressure of return water sensor by holding wire respectively, analyzes and processes mould
The control end of block is connected with relief valve by control module；It is provided with secondary side on the human-computer interaction interface of described touch screen to supply back
Differential water pressures sets membrane keyboard, overpressure protection pressure release sets membrane keyboard, circulating pump PID proportional gain settings membrane keyboard, circulating pump PID
Derivative time sets 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.
Automatic control mode uses PID tracing control function automatically to enter primary side high-temperature water pipe network outlet electric control valve
Row controls, it is achieved heat exchanger secondary side hot water outlet temperature automatically controls, and meets user's 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；
Described analysis and processing module includes: Effective judgement processing module, Filtering Processing processing module, magnitude transform process mould
Block, PID calculate processing module, and described Effective judgement processing module processes mould by Filtering Processing processing module, magnitude transform
Block 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 autocontrol method of a kind of heat exchange station blood circulation, is to control converter by pressure signal to export, thus controls
The rotating speed of circulating pump processed, realizes the control to secondary network pressure of supply water, to maintain pressure differential resetting value；When a circulating pump cannot
When reaching required pressure by frequency conversion pressurization, controller makes another stand-by pump come into operation to pressurize, it is achieved intelligence
The Isobarically Control changed；Including: manually and automatically control；
When the pressure of return water of secondary side exceedes setting value: touching open window in display screen, operator touch the numerical value of amendment
Time, automatically open up relief valve；Or manual unlocking relief valve as required, it is to avoid secondary pressure is excessive, reaches to have pipeline
Effect protection；
(1) the VFC of circulating pump
The VFC of circulating pump uses PID regulation to control, and is to use PID tracing control function automatically to circulating pump motor
Frequency is controlled, it is achieved heat exchanger secondary side hot water pipe net, for the constant control of backwater pressure reduction, meets user's room temperature and requires also
Energy-conservation, consumption reduction, the effect of environmental protection are reached；
Pid parameter, with (formula 3-3), is configured, first Set scale COEFFICIENT K by pid algorithmpWith integration Ti, T derivative timeD,
I.e. touching open window modified values in display screen, predefined secondary network, for backwater pressure differential resetting, i.e. touches in display screen and opens
Putting window modification value, for expectation setting value Sp, the pressure of the pressure transducer and backwater side that are arranged on secondary pipe network water supply side passes
Hydraulic signal is become signal of telecommunication 4-20mA by sensor, gives processing module and calculates the actually detected value of pressure difference, and PID controls
Device carries out PID calculating according to pressure differential resetting value and actually detected value and outputs signals to control module, and control module is to converter
Send signal of telecommunication instruction 4-20mA, thus the frequency of Frequency Converter Control circulating pump motor；
When actually detected value secondary pressure reduction increases with preset value difference, converter output frequency rises, and circulating pump is operated in height
Frequency state, secondary network pressure of return water rises；
When actually detected value secondary network pressure reduction reduces with preset value difference, converter output frequency declines, and circulating pump is operated in
Low frequency state, secondary network pressure of return water declines；Go round and begin again, complete the tracking of the PID to circulating pump and automatically control, make circulating pump
It is operated in a more stable frequency state, it is achieved heat exchanger secondary side hot water pipe net is for the constant control of backwater pressure reduction；
By utilizing PID tracking control technology, control the temperature and pressure of water in conjunction with electric control valve and converter, also use
The information gathered is processed, analyzes by control module, logical judgment in situations such as circulating pump fault or working cycle overlength
Time send 1# circulating pump, control instruction that 2# circulating pump switches mutually, be controlled, control logic as follows:
1. the frequency conversion of circulating pump, the switching of power frequency duty:
Circulating pump priority task, in variable frequency work state, when control module receives the fault-signal of converter, sends instruction
Control circulating pump and be switched to power frequency duty, control converter and quit work and send warning instruction；
2. 1# circulating pump and the standby switching control of 2# circulating pump:
No matter circulating pump is operated in frequency conversion or power frequency state, when 1# circulating pump work in break down time, control module according to
The information processing that receives, judge to send instruction and control the work of 2# circulating pump, and make 1# circulating pump quit work, carry out warning and refer to
Showing, vice versa；
At heat exchange station run duration, for guaranteeing that circulating pump corrective maintenance work is carried out, make equipment in shape, control module
Working time timing to 1# pump, sends switching command and controls 2# pump work, the stopping of 1# pump after waiting the working time reaching to set
Work enters maintenance state；This control mode improves hommization, intelligence degree, beneficially corrective maintenance, extends pump
Service life；
(3) the control of relief valve,
Non-follow control, the operation button on switch board panel is placed in manual position and starts pressure release, sends out operator or operator on duty
Existing secondary side ductwork pressure is too high, uses manual pressure release when i.e. exceeding safety value；Automatically controlling, be placed in automatic position, secondary side returns
Water pressure, higher than touching the overpressure protection sluicing pressure that display screen sets, opens relief valve, less than protection pressure, closes pressure release
Valve；By the control to relief valve, maintain secondary network stable water pressure in safety range.
Claims (4)
1. an automaton for heat exchange station blood circulation, is characterized in that: supplied by the secondary side being fixed on heat-exchange unit
Water pressure sensor, secondary side pressure of return water sensor, analysis and processing module, regulation valve PID module, control module, recirculated water
Pump, converter, relief valve form, and described touch screen is by analysis and processing module, regulation valve PID module, control module and frequency conversion
Device is connected, and the outfan of converter is connected with 1# water circulating pump, 2# water circulating pump respectively；The pressure acquisition end of analysis and processing module
It is connected with secondary side pressure of supply water sensor, secondary side pressure of return water sensor by holding wire respectively, analysis and processing module
Control end to be connected with relief valve by control module；Secondary side it is provided with for backwater pressure on the human-computer interaction interface of described touch screen
Difference sets membrane keyboard, overpressure protection pressure release sets membrane keyboard, circulating pump PID proportional gain settings membrane keyboard, circulating pump PID differential
Time sets membrane keyboard.
The automaton of a kind of heat exchange station blood circulation the most according to claim 1, is characterized in that: described regulation valve
PID module by regulating the pid parameter proportional gain module of valve, the module time of integration, module derivative time form.
The automaton of a kind of heat exchange station blood circulation the most according to claim 1, is characterized in that: at described analysis
Reason module includes: Effective judgement processing module, Filtering Processing processing module, magnitude transform processing module, PID calculating process mould
Block, described Effective judgement processing module processes mould by Filtering Processing processing module, magnitude transform processing module with PID calculating
Block is connected；PID calculates processing module data terminal and is connected with memory module, touch display screen respectively.
4. an autocontrol method for heat exchange station blood circulation, is characterized in that: be to control converter by pressure signal to export,
Thus control the rotating speed of circulating pump, realize the control to secondary network pressure of supply water, to maintain pressure differential resetting value；When a circulation
When pump cannot reach required pressure by frequency conversion pressurization, controller makes another stand-by pump come into operation to pressurize, real
Existing intelligentized Isobarically Control；Including: manually and automatically control；
When the pressure of return water of secondary side exceedes setting value: touching open window in display screen, operator touch the numerical value of amendment
Time, automatically open up relief valve；Or manual unlocking relief valve as required, it is to avoid secondary pressure is excessive, reaches to have pipeline
Effect protection；
(1) the VFC of circulating pump
The VFC of circulating pump uses PID regulation to control, and is to use PID tracing control function automatically to circulating pump motor
Frequency is controlled, it is achieved heat exchanger secondary side hot water pipe net, for the constant control of backwater pressure reduction, meets user's room temperature and requires also
Energy-conservation, consumption reduction, the effect of environmental protection are reached；
Utilize pid algorithm recurrence Relation form that pid parameter is configured, first Set scale COEFFICIENT KpWith integration Ti, differential
Time TD, i.e. touching open window modified values in display screen, predefined secondary network, for backwater pressure differential resetting, i.e. touches display
Open window modified values in screen, for expectation setting value Sp, is arranged on the pressure transducer of secondary pipe network water supply side and backwater side
Hydraulic signal is become signal of telecommunication 4-20mA by pressure transducer, gives processing module and calculates the actually detected value of pressure difference,
PID controller carries out PID calculating according to pressure differential resetting value and actually detected value and outputs signals to control module, control module to
Converter sends signal of telecommunication instruction 4-20mA, thus the frequency of Frequency Converter Control circulating pump motor；
When actually detected value secondary pressure reduction increases with preset value difference, converter output frequency rises, and circulating pump is operated in height
Frequency state, secondary network pressure of return water rises；
When actually detected value secondary network pressure reduction reduces with preset value difference, converter output frequency declines, and circulating pump is operated in
Low frequency state, secondary network pressure of return water declines；Go round and begin again, complete the tracking of the PID to circulating pump and automatically control, make circulating pump
It is operated in a more stable frequency state, it is achieved heat exchanger secondary side hot water pipe net is for the constant control of backwater pressure reduction；
By utilizing PID tracking control technology, control the temperature and pressure of water in conjunction with electric control valve and converter, also use
The information gathered is processed, analyzes by control module, logical judgment in situations such as circulating pump fault or working cycle overlength
Time send 1# circulating pump, control instruction that 2# circulating pump switches mutually, be controlled, control logic as follows:
1. the frequency conversion of circulating pump, the switching of power frequency duty:
Circulating pump priority task, in variable frequency work state, when control module receives the fault-signal of converter, sends instruction
Control circulating pump and be switched to power frequency duty, control converter and quit work and send warning instruction；
2. 1# circulating pump and the standby switching control of 2# circulating pump:
No matter circulating pump is operated in frequency conversion or power frequency state, when 1# circulating pump work in break down time, control module according to
The information processing that receives, judge to send instruction and control the work of 2# circulating pump, and make 1# circulating pump quit work, carry out warning and refer to
Showing, vice versa；
At heat exchange station run duration, for guaranteeing that circulating pump corrective maintenance work is carried out, make equipment in shape, control module
Working time timing to 1# pump, sends switching command and controls 2# pump work, the stopping of 1# pump after waiting the working time reaching to set
Work enters maintenance state；This control mode improves hommization, intelligence degree, beneficially corrective maintenance, extends pump
Service life；
Wherein, pid algorithm recurrence Relation:
In formula, SpIt it is adjuster settings；It it is value of feedback during sampling instant k；When being sampling instant k-1
Value of feedback；It it is value of feedback during sampling instant k-2；
(3) the control of relief valve,
Non-follow control, the operation button on switch board panel is placed in manual position and starts pressure release, sends out operator or operator on duty
Existing secondary side ductwork pressure is too high, uses manual pressure release when i.e. exceeding safety value；Automatically controlling, be placed in automatic position, secondary side returns
Water pressure, higher than touching the overpressure protection sluicing pressure that display screen sets, opens relief valve, less than protection pressure, closes pressure release
Valve；By the control to relief valve, maintain secondary network stable water pressure in safety range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610669141.1A CN106152250A (en) | 2016-08-16 | 2016-08-16 | Blood circulation that a kind of heat exchange station automatically controls and circulation controlling means |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610669141.1A CN106152250A (en) | 2016-08-16 | 2016-08-16 | Blood circulation that a kind of heat exchange station automatically controls and circulation controlling means |
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| CN106152250A true CN106152250A (en) | 2016-11-23 |
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| CN201610669141.1A Pending CN106152250A (en) | 2016-08-16 | 2016-08-16 | Blood circulation that a kind of heat exchange station automatically controls and circulation controlling means |
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| CN109917656A (en) * | 2019-03-29 | 2019-06-21 | 重庆大学 | Recirculated cooling water minimum differntial pressure energy-saving control system and method based on processing medium multi-temperature target |
| CN110136852A (en) * | 2019-04-30 | 2019-08-16 | 中广核核电运营有限公司 | A kind of one loop of nuclear power station water pressure test overpressure protection system |
| CN111951419A (en) * | 2020-08-21 | 2020-11-17 | 四川长虹电器股份有限公司 | ETC device and method for reducing fault influence and alarming problem equipment |
| CN113719887A (en) * | 2021-08-10 | 2021-11-30 | 华能山东发电有限公司烟台发电厂 | Intelligent balance heat supply system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6373036A (en) * | 1986-09-16 | 1988-04-02 | Nepon Kk | Hot water supplying method |
| JP2007170753A (en) * | 2005-12-22 | 2007-07-05 | Denso Corp | Water heater |
| CN201347566Y (en) * | 2008-12-18 | 2009-11-18 | 广州市高级技工学校 | Variable frequency constant-pressure water-supplying automatic control system |
| CN203928130U (en) * | 2013-07-31 | 2014-11-05 | 洛阳双瑞精铸钛业有限公司 | The unattended intelligence control system of heat exchange station |
| CN104214819A (en) * | 2014-09-17 | 2014-12-17 | 湖北兴发化工集团股份有限公司 | Fully automatic constant-temperature and constant-pressure water supply system |
| CN105588179A (en) * | 2016-02-15 | 2016-05-18 | 中国石化集团胜利石油管理局热电联供中心 | Heat supply network control loop based on fuzzy PID algorithm |
-
2016
- 2016-08-16 CN CN201610669141.1A patent/CN106152250A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6373036A (en) * | 1986-09-16 | 1988-04-02 | Nepon Kk | Hot water supplying method |
| JP2007170753A (en) * | 2005-12-22 | 2007-07-05 | Denso Corp | Water heater |
| CN201347566Y (en) * | 2008-12-18 | 2009-11-18 | 广州市高级技工学校 | Variable frequency constant-pressure water-supplying automatic control system |
| CN203928130U (en) * | 2013-07-31 | 2014-11-05 | 洛阳双瑞精铸钛业有限公司 | The unattended intelligence control system of heat exchange station |
| CN104214819A (en) * | 2014-09-17 | 2014-12-17 | 湖北兴发化工集团股份有限公司 | Fully automatic constant-temperature and constant-pressure water supply system |
| CN105588179A (en) * | 2016-02-15 | 2016-05-18 | 中国石化集团胜利石油管理局热电联供中心 | Heat supply network control loop based on fuzzy PID algorithm |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107678275A (en) * | 2017-08-10 | 2018-02-09 | 深圳市海浦蒙特科技有限公司 | Frequency converter and its Mick weight control method for inflation film manufacturing machine |
| CN109917656A (en) * | 2019-03-29 | 2019-06-21 | 重庆大学 | Recirculated cooling water minimum differntial pressure energy-saving control system and method based on processing medium multi-temperature target |
| CN109917656B (en) * | 2019-03-29 | 2022-03-01 | 重庆大学 | Circulating cooling water minimum pressure difference energy-saving control system and method based on process medium multi-temperature target |
| CN110136852A (en) * | 2019-04-30 | 2019-08-16 | 中广核核电运营有限公司 | A kind of one loop of nuclear power station water pressure test overpressure protection system |
| CN111951419A (en) * | 2020-08-21 | 2020-11-17 | 四川长虹电器股份有限公司 | ETC device and method for reducing fault influence and alarming problem equipment |
| CN113719887A (en) * | 2021-08-10 | 2021-11-30 | 华能山东发电有限公司烟台发电厂 | Intelligent balance heat supply system |
| CN113719887B (en) * | 2021-08-10 | 2023-10-31 | 华能山东发电有限公司烟台发电厂 | Intelligent balance heating system |
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