CN104896754B - A kind of combination type gas condensation energy saving in heating system control method, system and device - Google Patents
A kind of combination type gas condensation energy saving in heating system control method, system and device Download PDFInfo
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- CN104896754B CN104896754B CN201510323923.5A CN201510323923A CN104896754B CN 104896754 B CN104896754 B CN 104896754B CN 201510323923 A CN201510323923 A CN 201510323923A CN 104896754 B CN104896754 B CN 104896754B
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Abstract
Energy saving in heating system control method is condensed the invention discloses a kind of combination type gas, it is characterised in that system includes master controller and the multiple combustion gas being connected with master controller condensation heat supply unit, each unit optimized operation load is G0, method comprises the following steps：S1, the total load G for obtaining current system；S2, by G and n G0Subtract each other, until yielding less than G0Remaining load Gr, by GrWith the default load G of unitsIt is compared, if Gr≥Gs, then the load for needing to open every unit in n+1 platform units, preceding n platforms unit is G0, the load of (n+1)th unit is Gr；If Gr<Gs, then need to open n platform units, the load of every unit is G0+Gr/n；S3, according to the result of decision control unit operation.Correspondingly, the invention also discloses a kind of combination type gas condensation energy saving in heating system control system and device.The present invention condenses heat supply unit operation load by each combustion gas of real-time heat demand reasonable distribution, and the saving energy is realized to the full extent.
Description
Technical field
The present invention relates to condensing boiler Energy Saving Control field, more particularly to a kind of combination type gas condensation energy saving in heating system
Control method, system and device.
Background technology
Combustion gas condenses heating system, is that one kind uses combustion gas and air before heat exchanger internal-combustion is entered just according to suitable
When a kind of novel high-efficiency environment friendly system of the fully premixed technology of ratio 100%；The flue gas produced after fuel gas buring is directly in heat exchange
The device body just process through supercooling, condensation, has reclaimed in flue gas the latent heat of vaporization of most of vapor, is greatly improved and is
System efficiency, and effectively reduce exhaust gas temperature.
Compared with traditional atmospheric gas boiler, combustion gas condensation heating system is because use 100% fully premixed combustion
The structure design of this brand-new combustion system and burning condensation integral heat exchanger, becomes more energy-saving and environmental protection and efficient
Heating equipment.But the application of the condensation heating system of combustion gas at present also receives certain limitation.
So far, the peak power of the full premixed condensed heating system of single combustion gas is 1000KW, and during field application
There are the needs such as heating area is big, temperature requirements are high, single heating system generally can not individually complete heating task, mostly more
Need heating system being applied in combination, to reach the demand of large area heating.But currently manufactured heating system inconvenience superposition
And splicing, it is impossible to make full use of interior height and limited space, it is necessary to which larger floor space is placed.
And each unit of conventional gas boiler is required for single control system, control mode is only high-low power
Regulation, it is impossible to real realize adjusts power according to workload demand, often results in substantial amounts of energy waste.
In the Combustion System of gas-fired condensing boiler, main control object is the water temperature in stove, will assign water temperature as quilt
The parameter formation control signal of object is controlled, then by the control to the calory burning into combustion gas, the air in stove etc. so as to reality
Now to the control of temperature, its whole process is the key link during gas-fired condensing boiler is automatically controlled.In combustion, pass through
Control the open amount of electromagnetic gas proportioning valve door to realize the control to water temperature in stove, come from according to the real-time change of water temperature in stove
The dynamic open amount for controlling to adjust gas valve, water temperature height is controlled by the open amount of electromagnetic valve for adjusting；In addition, with real-time change
Air inlet combustion gas flow as foundation, optimal air requirements amount is drawn by theoretical calculation, then by adjusting rotation speed of fan
To change in real time the air inflow of air, to reach Optimal Control effect, realize energy-saving and emission-reduction.
The content of the invention
The technical problems to be solved by the invention are exist for combustion gas condensation heating system single at present and be difficult to completely
Sufficient large area heating demands and a variety of demands of client, it is impossible to flexible modulation power, and multiple combustion gas condensation heat supply unit combines and makes
There is many deficiencies such as floor space is big, installation is not convenient in the used time, particularly when simultaneously many combustion gas condensation heat supply units are run
When, because no related Control System coordinates each unit burden apportionment, cause big load operation demand occur or start and stop are drawn
The load risen fluctuates widely, regulation implicative of each other between each unit so that each unit can not inside combustion gas condensation heating system
Realize load reasonable distribution and transfer.
The present invention condenses energy saving in heating system controlling party for shortcoming of the prior art there is provided a kind of combination type gas
Method, methods described condenses heating system by combination type gas and realizes Energy Saving Control, the system include master controller and with institute
The connected multiple combustion gas condensation heat supply unit of master controller is stated, the optimized operation load of each unit is G0, methods described includes
Following steps：
S1, the total load G for obtaining present combination formula combustion gas condensation heating system；
S2, the optimized operation load G by G and n platform units0Subtract each other, until yielding less than G0Remaining load Gr, by residue
Load GrWith the default load G of unitsIt is compared,
If Gr≥Gs, then the result of decision is G for the load that need to open every unit in n+1 platform units, preceding n platforms unit0, n-th
The load of+1 unit is Gr；
If Gr<Gs, then the result of decision is need to open n platform units, and the load of every unit is G0+Gr/n；
S3, according to the result of decision control unit operation.
Further, step S1 is performed, the total load G ' that combination type gas condenses heating system is reacquired, by G ' and G
It is compared,
If G ' >=G, judge the demand load increase of current system, step S2 is performed again, the unit that need to be opened is obtained
The operating load of quantity x and x platform unit, the unit quantity x that need to be opened is compared with the unit quantity currently run,
The unit quantity that need to be increased is obtained, the operating load generation of the unit quantity that need to be increased and the x platforms unit is secondary certainly
Plan result, and step S3 is performed according to the Second Decision result；
If G '<G, then judge that the demand load of current system reduces, step S2 performed again, the unit number that need to be opened is obtained
The operating load of y and y platform units is measured, the unit quantity y that need to be opened is compared with the unit quantity currently run, obtained
To the unit quantity stopped need to be subtracted, the operating load that need to subtract the unit quantity stopped and the y platforms unit is generated into Second Decision
As a result, and according to the Second Decision result perform step S3.
Further, before the execution step S1, the total load G ' for reacquiring combination type gas condensation heating system
It is additionally included in after predetermined amount of time and judges that system heat demand has unchanged, comprises the following steps：
Step 1: determining default supply water temperature T0With the current supply water temperature T of acquisitionx；
Step 2: by Δ T=Tx-T0Calculating obtains the poor Δ T of supply water temperature, and by Δ T '=(Tx-T0)/t is calculated and supplied
Coolant-temperature gage difference rate of change Δ T '；
Step 3: according to supply water temperature difference Δ T and the poor rate of change Δ T ' of supply water temperature size, judging system heat demand
Have unchanged：
As Δ T>0 or Δ T<When 0, then judge that system heat demand is changed, reacquire combination type gas condensation heat supply
The total load G ' of system；
As Δ T=0, then judge that system heat demand is unchanged, system keeps existing running status.
Further, the step of detecting system has fault-free is also included before the step S1, is specially：
If system and unit do not break down, step S1 is directly entered；
If unit breaks down, system output services instruct and command all non-faulting units to enter step S1, unit
S1 is advanced into after fixing a breakdown certainly again；
If system breaks down, there is error information in system, and unit keeps instantaneous operating conditions.
In the present invention for gas-fired condensing boiler, there is factors influence hot water temperature includes gas flow, combustion gas
The uncertain factors such as the environment temperature at fired state, water supply flow, supply water temperature and heating system, also combustion process
In the heat that discharges should also be considered into, based on these considerations, the present invention have selected the delayed non-thread of a second order
Sexual system, modelling is：
G- system loadings, K in formula (1)0Gain in-combustion gas condensation heating system normal course of operation to control object,
T1、T2- time constant, the time delay of τ-system input.
Water supply Relationship Between Dynamic Change is met：
G=Qc ρ Δs tt (2)
Q- water supply flows in (2) in formula, unit is m3The specific heat of/s, c- water, unit is KJ/Kg DEG C, the density of ρ-water,
Unit is kg/m3, the Δ t- water supply temperature difference, unit for DEG C, t- times, unit is s.
If maximum load is Gmax, the total load of system is G, and the maximum load of unit is Gimax, the actual load of unit is
Gi, unit operation efficiency eta, specific sharing of load follows following mathematical modeling：
η=Gi/Gimax
G=G1+G2+···+Gn-1+Gn
G=G1max·η1+G2max·η2+···+Gnmax·ηn
Correspondingly, energy saving in heating system control system, the system are condensed present invention also offers a kind of combination type gas
The n combustion gas condensation heat supply unit being connected including master controller and with the master controller, wherein, n >=1, the master controller
Including acquisition module, processing module and control module,
The acquisition module, the total load G of heating system is condensed for obtaining the combustion gas of present combination formula；
The processing module includes computing unit and decision package, and the computing unit is used for the optimal of G and n platform units
Operating load G0Subtract each other, until yielding less than G0Remaining load Gr, the decision package is used for remaining load GrWith unit
Default load GsIt is compared,
If Gr≥Gs, then the result of decision is G for the load that need to open every unit in n+1 platform units, preceding n platforms unit0, n-th
The load of+1 unit is Gr；
If Gr<Gs, then the result of decision is need to open n platform units, and the load of every unit is G0+Gr/n；
The control module, for controlling unit operation according to the result of decision.
Further, the acquisition module, is additionally operable to reacquire the combination type gas condensation heating system in step S1
Total load G ',
The processing module also includes judging unit, and the judging unit is used for the demand load increase for judging current system
Or reduce, the decision package is additionally operable to G ' being compared with G, if G ' >=G, obtains unit quantity x and x the platform list that need to be opened
The operating load of machine, the unit quantity x that need to be opened is compared with the unit quantity currently run, obtains what need to be increased
Unit quantity, Second Decision result is generated by the operating load of the unit quantity that need to be increased and the x platforms unit,
If G '<G, obtains the operating load of unit quantity y and y platform unit that need to be opened, by the unit number that need to be opened
Amount y and the unit quantity currently run are compared, and obtain subtracting the unit quantity stopped, by it is described need to subtract the unit quantity stopped with
The operating load generation Second Decision result of the y platforms unit.
Further, the acquisition module, is additionally operable to obtain current supply water temperature Tx；
The computing unit, is additionally operable to by Δ T=Tx-T0Calculating obtains the poor Δ T of supply water temperature, and by Δ T '=(Tx-
T0)/t, which is calculated, obtains the poor rate of change Δ T ' of supply water temperature；
The judging unit, is additionally operable to judge that system heat demand has unchanged according to Δ T and Δ T ' size：
As Δ T>During 0 or Δ T ＜ 0, then judge that system heat demand is changed, reacquire combination type gas condensation heat supply
The total load G ' of system；
As Δ T=0, then judge that system heat demand is unchanged, system keeps existing running status.
Further, the master controller and unit also include being respectively used to detecting system and whether unit breaks down
Fault detection module.
Correspondingly, heating system energy-saving control device, the energy-conservation are condensed present invention also offers a kind of combination type gas
Control device includes a master controller and n combustion gas being connected with master controller condensation heat supply unit, wherein, n >=1 is described
Combustion gas is condensed above and below heat supply unit or left and right combination is stacked, and the master controller passes through wired or wireless transmission means and each combustion
Air cooling coagulates heat supply unit and carries out signal transmission；
The master controller includes main controlling element and master data treatment element, each combustion gas condensation heat supply unit bag
Include sub-control element, secondary data acquisition element and secondary data handling component；
The secondary data acquisition element be used for gather combustion gas condensation heat supply unit include current supply water temperature TxOperating mode
Supplemental characteristic；The secondary data handling component is used to carry out unit data processing and by data according to the duty parameter data
Result, which is exported, gives master data treatment element；
The master data treatment element includes computing unit and decision package, and the computing unit is used for the total negative of system
Lotus G and n platform units optimized operation load G0Subtract each other, until yielding less than G0Remaining load Gr, the decision package is used for will
Remaining load GrWith the default load G of unitsIt is compared,
If Gr≥Gs, then the result of decision is G for the load that need to open every unit in n+1 platform units, preceding n platforms unit0, n-th
The load of+1 unit is Gr,
If Gr<Gs, then the result of decision is need to open n platform units, and the load of every unit is G0+Gr/ n, master data processing elements
The result of decision is transferred to main controlling element by part；
The main controlling element is used to be distributed the operating load that combination type gas condenses heating system according to the result of decision
To each unit,
The sub-control element is used to receive main controlling element allocation result and regulates and controls corresponding unit according to allocation result
Operating load.
Further, the master controller also includes major error detecting element and main display element, the major error detection
Whether the detection combination formula combustion gas condensation heating system that element is used for is broken down and sends fault message, and the main display element is used
In the operation conditions by each unit of Special visible interface display, enquiry of historical data and progress parameter modification；
The combustion gas condensation heat supply unit also includes secondary fault detect element, and the secondary fault detect element is used to detect list
Whether machine breaks down and sends fault message.
Each combustion gas condensation heat supply unit also includes return water temperature sensing element, high temperature alarm switch element, flue gas protection
Element, low gas pressure are tried hard to keep protection element, air pressure error protecting element and current protection switch element.
The flue gas protection element, for detecting that flue gas pressures change, it is ensured that system is normally carried out.
The low gas pressure is tried hard to keep protection element, the situation for being less than minimum gaseous-pressure as defined in system when gaseous-pressure
Under, timely automated it can cut off burnt gas valve to protect system.
The current protection switch element, in the case of being stopped when current, controller sends stopping to system in time
The signal of operation is to protect system.
Wherein, each combustion gas condensation heat supply unit is controlled defeated come step-less adjustment by the pulse width modulation (PWM) of blower fan
Go out power, the size of power output can be adjusted according to demand.
Combination type gas condensation energy saving in heating system control method, system and the device of the present invention, with following beneficial effect
Really：
1st, the present invention condenses the operating load of heat supply unit by real-time heat demand come reasonable distribution each combustion gas, flexibly
Regulation operation power, greatly reduces operation energy consumption, the saving energy is realized to the full extent.
2nd, after combustion gas condensation heat supply unit concurrent working of the present invention, traditional power open loop or close-loop control mode are being kept
On the basis of, load control manner is newly increased, and add the various abnormal conditions such as unit for occurring in running
The processing mode of failure, shutdown etc..
3rd, the mode of above and below unit of the present invention and left and right superposition is abundant using indoor height, reduces set to greatest extent
Standby floor space, spatially realizes flexible combination installation.
4th, main display element of the invention freely sets multiple by the running status of each unit of Special visible interface display
Allocation proportion is closed, and the suitable method of operation is selected according to system operational parameters, the work(such as parameter modification, the inquiry of historical data are realized
Energy.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is that the combination type gas of the present invention condenses the schematic flow sheet of energy saving in heating system control method；
Fig. 2 is that the combination type gas of the present invention condenses the structural representation of energy saving in heating system control system；
Fig. 3 is that the combination type gas of the present invention condenses the structural representation of heating system energy-saving control device.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art obtained on the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
Embodiment one：
As shown in figure 1, condensing energy saving in heating system control method, methods described the invention provides a kind of combination type gas
Heating system is condensed by combination type gas and realizes Energy Saving Control, the system include master controller and with the master controller phase
Multiple combustion gas condensation heat supply unit even, the optimized operation load of each unit is G0, the described method comprises the following steps：
Assuming that during unit oepration at full load, its load is Gimax=350KW, unit operation efficiency eta=91.4%, then basis
Formula η=Gi/Gimax, now Gi=G0, calculate the optimized operation load G for obtaining unit0For 320KW.
S1, the total load G for obtaining present combination formula combustion gas condensation heating system；
Assuming that the total load G of current system is 1000KW.
S2, the optimized operation load G by G and n platform units0Subtract each other, until yielding less than G0Remaining load Gr, by residue
Load GrWith the default load G of unitsIt is compared,
If Gr≥Gs, then the result of decision is G for the load that need to open every unit in n+1 platform units, preceding n platforms unit0, n-th
The load of+1 unit is Gr；
If Gr<Gs, then the result of decision is need to open n platform units, and the load of every unit is G0+Gr/n；
G-G0=Gr1=1000-320=680KW,
Gr1-G0=Gr2=680-320=360KW,
Gr2-G0=Gr3=360-320=40KW,
If assuming default load Gs=30KW, Gr3>Gs, then the result of decision is every in 4 units, preceding 3 units for that need to open
The load of platform unit is 320KW, and the load of the 4th unit is 40KW；
If assuming default load Gs=60KW, Gr3<Gs, then the result of decision is that need to open 3 units, the load of every unit
For G0+Gr/ n=320+40/3=333KW, that is, the load for 3 units opened is 333KW.
S3, according to the result of decision control unit with corresponding load operation.
Wherein, also wrapped before the execution step S1, the total load G ' for reacquiring combination type gas condensation heating system
Include and judge that system heat demand has unchanged after predetermined amount of time, comprise the following steps：
Step 1: determining default supply water temperature T0With the current supply water temperature T of acquisitionx；
Step 2: by Δ T=Tx-T0Calculating obtains the poor Δ T of supply water temperature, and by Δ T '=(Tx-T0)/t is calculated and supplied
Coolant-temperature gage difference rate of change Δ T '；
Step 3: according to supply water temperature difference Δ T and the poor rate of change Δ T ' of supply water temperature size, judging heat demand whether there is
Change：
As Δ T>0 or Δ T<When 0, then judge that system heat demand is changed, reacquire combination type gas condensation heat supply
The total load G ' of system；
As Δ T=0, then judge that system heat demand is unchanged, system keeps existing operating load.
Therefore, as Δ T>0 or Δ T<, it is necessary to reacquire the combination type gas condensation heating system in step S1 when 0
Total load G ', G ' is compared with G,
If G ' >=G, judge the demand load increase of current system, step S2 is performed again, the unit that need to be opened is obtained
The operating load of quantity x and x platform unit, the unit quantity x that need to be opened is compared with the unit quantity currently run,
The unit quantity that need to be increased is obtained, the operating load generation of the unit quantity that need to be increased and the x platforms unit is secondary certainly
Plan result, and step S3 is performed according to the Second Decision result；
If G '<G, then judge that the demand load of current system reduces, step S2 performed again, the unit number that need to be opened is obtained
The operating load of y and y platform units is measured, the unit quantity y that need to be opened is compared with the unit quantity currently run, obtained
To the unit quantity stopped need to be subtracted, the operating load that need to subtract the unit quantity stopped and the y platforms unit is generated into Second Decision
As a result, and according to the Second Decision result perform step S3.
In the present invention for gas-fired condensing boiler, there is factors influence hot water temperature includes gas flow, combustion gas
The uncertain factors such as the environment temperature at fired state, water supply flow, supply water temperature and heating system, also combustion process
In the heat that discharges should also be considered into, based on these considerations, the present invention have selected the delayed non-thread of a second order
Sexual system, modelling is：
G- system loadings, K in formula (1)0Gain in-combustion gas condensation heating system normal course of operation to control object,
T1、T2- time constant, the time delay of τ-system input.
Water supply Relationship Between Dynamic Change is met：
G=Qc ρ Δs tt (2)
Q- water supply flows in (2) in formula, unit is m3The specific heat of/s, c- water, unit is
KJ/Kg DEG C, the density of ρ-water, unit is kg/m3, the Δ t- water supply temperature difference, unit for DEG C, the t- times, unit is
s。
Assuming that determine total load G '=2000KW of system according to formula (1) and formula (2), then G '>G, performs step S2 again,
The result of decision comprising the unit quantity that need to be opened and the operating load of the unit is obtained, i.e.,：
Gr1'=G-G0=2000-320=1680KW,
Gr2'=Gr1’-G0=1680-320=1360KW,
Gr3'=Gr2’-G0=1360-320=1040KW,
Gr4'=Gr3’-G0=1040-320=720KW,
Gr5'=Gr4’-G0=720-320=400KW,
Gr6'=Gr5’-G0=400-320=80KW,
If assuming default load Gs=30KW, Gr6’>Gs, then the result of decision is every in 7 units, preceding 6 units for that need to open
The load of platform unit is 320KW, the load of the 7th unit is 80KW, is run the unit quantity 7 that need to be opened and currently
Unit quantity 4 is compared, and obtains the unit quantity 7-4=3 for needing to increase again, i.e., currently opening the basis of 4 units
On to increase the loads of 2 units in 3 units, 3 units of increase again be 320KW, the load of another 1 unit is 80KW；
If assuming default load Gs=60KW, Gr6’<Gs, then the result of decision is need to open 6 units, every unit it is negative
Lotus is G0+Gr/ n=320+80/6=333KW, that is, the load for 6 units opened is 333KW, by the unit that need to be opened
Quantity 6 is compared with the unit quantity 3 currently run, and obtains the unit quantity 6-3=3 for needing to increase again, i.e., current
The load for increasing every unit in 3 units, 3 units of increase on the basis of 3 units of unlatching again is 333KW.
Wherein, the step of detecting system has fault-free is also included before the step S1, is specially：
If system and unit do not break down, step S1 is directly entered；
If unit breaks down, system output services instruct and command all non-faulting units to enter step S1, unit
S1 is advanced into after fixing a breakdown certainly again；
If system breaks down, there is error information in system, and unit keeps instantaneous operating conditions.
As shown in Fig. 2 condensing energy saving in heating system control system, the system present invention also offers a kind of combination type gas
System includes master controller and n combustion gas being connected with master controller condensation heat supply unit, wherein, n >=1, the main control
Device includes acquisition module, processing module and control module,
The acquisition module, the total load G of heating system is condensed for obtaining the combustion gas of present combination formula；
The processing module includes computing unit and decision package, and the computing unit is used for the optimal of G and n platform units
Operating load G0Subtract each other, until yielding less than G0Remaining load Gr, the decision package is used for remaining load GrWith unit
Default load GsIt is compared,
If Gr≥Gs, then the result of decision is G for the load that need to open every unit in n+1 platform units, preceding n platforms unit0, n-th
The load of+1 unit is Gr；
If Gr<Gs, then the result of decision is need to open n platform units, and the load of every unit is G0+Gr/n；
The control module, for controlling unit according to the result of decision with corresponding load operation.
Wherein, the acquisition module, is additionally operable to reacquire the combination type gas in step S1 and condenses the total of heating system
Load G ',
The processing module also includes judging unit, and the judging unit is used for the demand load increase for judging current system
Or reduce, the decision package is additionally operable to G ' being compared with G, if G ' >=G, obtains unit quantity x and x the platform list that need to be opened
The operating load of machine, the unit quantity x that need to be opened is compared with the unit quantity currently run, obtains what need to be increased
Unit quantity, Second Decision result is generated by the operating load of the unit quantity that need to be increased and the x platforms unit,
If G '<G, obtains the operating load of unit quantity y and y platform unit that need to be opened, by the unit number that need to be opened
Amount y and the unit quantity currently run are compared, and obtain subtracting the unit quantity stopped, by it is described need to subtract the unit quantity stopped with
The operating load generation Second Decision result of the y platforms unit.
Wherein, the acquisition module, is additionally operable to obtain current supply water temperature Tx；
The computing unit, is additionally operable to by Δ T=Tx-T0Calculating obtains the poor Δ T of supply water temperature, and by Δ T '=(Tx-
T0)/t, which is calculated, obtains the poor rate of change Δ T ' of supply water temperature；
The judging unit, is additionally operable to judge that system heat demand has unchanged according to Δ T and Δ T ' size：
As Δ T>During 0 or Δ T ＜ 0, then judge that system heat demand is changed, reacquire combination type gas condensation heat supply
The total load G ' of system；
As Δ T=0, then judge that system heat demand is unchanged, system keeps existing running status.
Wherein, the master controller and unit also include being respectively used to the failure whether detecting system and unit break down
Detection module.
As shown in figure 3, condensing heating system energy-saving control device, the section present invention also offers a kind of combination type gas
Energy control device includes a master controller and n combustion gas being connected with master controller condensation heat supply unit, wherein, n >=1, institute
State above and below combustion gas condensation heat supply unit or left and right combination is stacked, the master controller is by wired or wireless transmission means and each
Combustion gas condensation heat supply unit carries out signal transmission；
The master controller includes main controlling element and master data treatment element, each combustion gas condensation heat supply unit bag
Include sub-control element, secondary data acquisition element and secondary data handling component；
The secondary data acquisition element be used for gather combustion gas condensation heat supply unit include current supply water temperature TxOperating mode
Supplemental characteristic；The secondary data handling component is used to carry out unit data processing and by data according to the duty parameter data
Result, which is exported, gives master data treatment element；
The master data treatment element includes computing unit and decision package, and the computing unit is used for the total negative of system
Lotus G and n platform units optimized operation load G0Subtract each other, until yielding less than G0Remaining load Gr, the decision package is used for will
Remaining load GrWith the default load G of unitsIt is compared,
If Gr≥Gs, then the result of decision is G for the load that need to open every unit in n+1 platform units, preceding n platforms unit0, n-th
The load of+1 unit is Gr,
If Gr<Gs, then the result of decision is need to open n platform units, and the load of every unit is G0+Gr/ n, master data processing elements
The result of decision is transferred to main controlling element by part；
The main controlling element is used to be distributed the operating load that combination type gas condenses heating system according to the result of decision
To each unit,
The sub-control element is used to receive main controlling element allocation result and regulates and controls corresponding unit according to allocation result
Operating load.
Wherein, the master controller also includes major error detecting element and main display element, the major error detecting element
Whether broken down for detection combination formula combustion gas condensation heating system and send fault message, the main display element is used to lead to
Cross the operation conditions of each unit of Special visible interface display, enquiry of historical data and progress parameter modification；
The combustion gas condensation heat supply unit also includes secondary fault detect element, and the secondary fault detect element is used to detect list
Whether machine breaks down and sends fault message.
Each combustion gas condensation heat supply unit also includes return water temperature sensing element, high temperature alarm switch element, flue gas protection
Element, low gas pressure are tried hard to keep protection element, air pressure error protecting element and current protection switch element.
The flue gas protection element, for detecting that flue gas pressures change, it is ensured that system is normally carried out.
The low gas pressure is tried hard to keep protection element, the situation for being less than minimum gaseous-pressure as defined in system when gaseous-pressure
Under, timely automated it can cut off burnt gas valve to protect system.
The current protection switch element, in the case of being stopped when current, controller sends stopping to system in time
The signal of operation is to protect system.
Wherein, each combustion gas condensation heat supply unit is controlled defeated come step-less adjustment by the pulse width modulation (PWM) of blower fan
Go out power, the size of power output can be adjusted according to demand.
Embodiment two：
As shown in figure 1, condensing energy saving in heating system control method, methods described the invention provides a kind of combination type gas
Heating system is condensed by combination type gas and realizes Energy Saving Control, the system include master controller and with the master controller phase
Multiple combustion gas condensation heat supply unit even, the optimized operation load of each unit is G0, the described method comprises the following steps：
Assuming that during unit oepration at full load, its load is Gimax=500KW, unit operation efficiency eta=95%, then according to public affairs
Formula η=Gi/Gimax, now Gi=G0, calculate the optimized operation load G for obtaining unit0For 475KW.
S1, the total load G for obtaining present combination formula combustion gas condensation heating system；
Assuming that the total load G of current system is 2500KW.
S2, the optimized operation load G by G and n platform units0Subtract each other, until yielding less than G0Remaining load Gr, by residue
Load GrWith the default load G of unitsIt is compared,
If Gr≥Gs, then the result of decision is G for the load that need to open every unit in n+1 platform units, preceding n platforms unit0, n-th
The load of+1 unit is Gr；
If Gr<Gs, then the result of decision is need to open n platform units, and the load of every unit is G0+Gr/n；
G-G0=Gr1=2500-475=2025KW,
Gr1-G0=Gr2=2025-475=1550KW,
Gr2-G0=Gr3=1550-475=1075KW,
Gr3-G0=Gr4=1075-475=600KW,
Gr4-G0=Gr5=600-475=125KW,
If assuming default load Gs=50KW, Gr5>Gs, then the result of decision is every in 6 units, preceding 5 units for that need to open
The load of platform unit is 475KW, and the load of the 6th unit is 125KW；
If assuming default load Gs=150KW, Gr5<Gs, then the result of decision is need to open 5 units, every unit it is negative
Lotus is G0+Gr/ n=475+125/5=500KW, that is, the load for 5 units opened is 500KW, i.e., every unit is with full
Load operation.
S3, according to the result of decision control unit with corresponding load operation.
Wherein, also wrapped before the execution step S1, the total load G ' for reacquiring combination type gas condensation heating system
Include and judge that system heat demand has unchanged after predetermined amount of time, comprise the following steps：
Step 1: determining default supply water temperature T0With the current supply water temperature T of acquisitionx；
Step 2: by Δ T=Tx-T0Calculating obtains the poor Δ T of supply water temperature, and by Δ T '=(Tx-T0)/t is calculated and supplied
Coolant-temperature gage difference rate of change Δ T '；
Step 3: according to supply water temperature difference Δ T and the poor rate of change Δ T ' of supply water temperature size, judging system heat demand
Have unchanged：
As Δ T>0 or Δ T<When 0, then judge that system heat demand is changed, reacquire combination type gas condensation heat supply
The total load G ' of system；
As Δ T=0, then judge that system heat demand is unchanged, system keeps existing running status.
Therefore, as Δ T>0 or Δ T<, it is necessary to reacquire the combination type gas condensation heating system in step S1 when 0
Total load G ', G ' is compared with G,
If G ' >=G, judge the demand load increase of current system, step S2 is performed again, the unit that need to be opened is obtained
The operating load of quantity x and x platform unit, the unit quantity x that need to be opened is compared with the unit quantity currently run,
The unit quantity that need to be increased is obtained, the operating load generation of the unit quantity that need to be increased and the x platforms unit is secondary certainly
Plan result, and step S3 is performed according to the Second Decision result；
If G '<G, then judge that the demand load of current system reduces, step S2 performed again, the unit number that need to be opened is obtained
The operating load of y and y platform units is measured, the unit quantity y that need to be opened is compared with the unit quantity currently run, obtained
To the unit quantity stopped need to be subtracted, the operating load that need to subtract the unit quantity stopped and the y platforms unit is generated into Second Decision
As a result, and according to the Second Decision result perform step S3.
In the present invention for gas-fired condensing boiler, there is factors influence hot water temperature includes gas flow, combustion gas
The uncertain factors such as the environment temperature at fired state, water supply flow, supply water temperature and heating system, also combustion process
In the heat that discharges should also be considered into, based on these considerations, the present invention have selected the delayed non-thread of a second order
Sexual system, modelling is：
G- system loadings, K in formula (1)0Gain in-combustion gas condensation heating system normal course of operation to control object,
T1、T2- time constant, the time delay of τ-system input.
Water supply Relationship Between Dynamic Change is met：
G=Qc ρ Δs tt (2)
Q- water supply flows in (2) in formula, unit is m3The specific heat of/s, c- water, unit is KJ/Kg DEG C, the density of ρ-water,
Unit is kg/m3, the Δ t- water supply temperature difference, unit for DEG C, t- times, unit is s.
Assuming that determine total load G '=1500KW of system according to formula (1) and formula (2), then G '<G, performs step S2 again,
The result of decision comprising the unit quantity that need to be opened and the operating load of the unit is obtained, i.e.,：
Gr1'=G-G0=1500-475=1025KW,
Gr2'=Gr1’-G0=1025-475=550KW,
Gr3'=Gr2’-G0=550-475=75KW,
If assuming default load Gs=50KW, Gr3’>Gs, then the result of decision is every in 4 units, preceding 3 units for that need to open
The load of platform unit is 475KW, the load of the 4th unit is 75KW, is run the unit quantity 4 that need to be opened and currently
Unit quantity 6 is compared, and obtains needing to subtract the unit quantity 6-4=2 stopped, i.e., subtract on the basis of 6 units are currently opened
Stop 2 units, subtract the unit for stopping that 2 loads are 475KW, and load is reduced to 75KW for 125KW unit load；
If assuming default load Gs=150KW, Gr3’<Gs, then the result of decision is need to open 3 units, every unit it is negative
Lotus is G0+Gr/ n=475+75/3=500KW, that is, the load for 3 units opened is 500KW, by the unit that need to be opened
Quantity 3 is compared with the unit quantity 5 currently run, and obtains needing to subtract the unit quantity 5-3=2 stopped, i.e., open 5 current
Subtract on the basis of platform unit and stop 2 units, subtract the unit for stopping that 2 loads are 500KW.
Wherein, the step of detecting system has fault-free is also included before the step S1, is specially：
If system and unit do not break down, step S1 is directly entered；
If unit breaks down, system output services instruct and command all non-faulting units to enter step S1, unit
S1 is advanced into after fixing a breakdown certainly again；
If system breaks down, there is error information in system, and unit keeps instantaneous operating conditions.
As shown in Fig. 2 condensing energy saving in heating system control system, the system present invention also offers a kind of combination type gas
System includes master controller and n combustion gas being connected with master controller condensation heat supply unit, wherein, n >=1, the main control
Device includes acquisition module, processing module and control module,
The acquisition module, the total load G of heating system is condensed for obtaining the combustion gas of present combination formula；
The processing module includes computing unit and decision package, and the computing unit is used for the optimal of G and n platform units
Operating load G0Subtract each other, until yielding less than G0Remaining load Gr, the decision package is used for remaining load GrWith unit
Default load GsIt is compared,
If Gr≥Gs, then the result of decision is G for the load that need to open every unit in n+1 platform units, preceding n platforms unit0, n-th
The load of+1 unit is Gr；
If Gr<Gs, then the result of decision is need to open n platform units, and the load of every unit is G0+Gr/n；
The control module, for controlling unit according to the result of decision with corresponding load operation.
Wherein, the acquisition module, is additionally operable to reacquire the combination type gas in step S1 and condenses the total of heating system
Load G ',
The processing module also includes judging unit, and the judging unit is used for the demand load increase for judging current system
Or reduce, the decision package is additionally operable to G ' being compared with G, if G ' >=G, obtains unit quantity x and x the platform list that need to be opened
The operating load of machine, the unit quantity x that need to be opened is compared with the unit quantity currently run, obtains what need to be increased
Unit quantity, Second Decision result is generated by the operating load of the unit quantity that need to be increased and the x platforms unit,
If G '<G, obtains the operating load of unit quantity y and y platform unit that need to be opened, by the unit number that need to be opened
Amount y and the unit quantity currently run are compared, and obtain subtracting the unit quantity stopped, by it is described need to subtract the unit quantity stopped with
The operating load generation Second Decision result of the y platforms unit.
Wherein, the acquisition module, is additionally operable to obtain current supply water temperature Tx；
The computing unit, is additionally operable to by Δ T=Tx-T0Calculating obtains the poor Δ T of supply water temperature, and by Δ T '=(Tx-
T0)/t, which is calculated, obtains the poor rate of change Δ T ' of supply water temperature；
The judging unit, is additionally operable to judge that system heat demand has unchanged according to Δ T and Δ T ' size：
As Δ T>During 0 or Δ T ＜ 0, then judge that system heat demand is changed, reacquire combination type gas condensation heat supply
The total load G ' of system；
As Δ T=0, then judge that system heat demand is unchanged, system keeps existing operating load.
Wherein, the master controller and unit also include being respectively used to the failure whether detecting system and unit break down
Detection module.
As shown in figure 3, condensing heating system energy-saving control device, the section present invention also offers a kind of combination type gas
Energy control device includes a master controller and n combustion gas being connected with master controller condensation heat supply unit, wherein, n >=1, institute
State above and below combustion gas condensation heat supply unit or left and right combination is stacked, the master controller is by wired or wireless transmission means and each
Combustion gas condensation heat supply unit carries out signal transmission；
The master controller includes main controlling element and master data treatment element, each combustion gas condensation heat supply unit bag
Include sub-control element, secondary data acquisition element and secondary data handling component；
The secondary data acquisition element be used for gather combustion gas condensation heat supply unit include current supply water temperature TxOperating mode
Supplemental characteristic；The secondary data handling component is used to carry out unit data processing and by data according to the duty parameter data
Result, which is exported, gives master data treatment element；
The master data treatment element includes computing unit and decision package, and the computing unit is used for the total negative of system
Lotus G and n platform units optimized operation load G0Subtract each other, until yielding less than G0Remaining load Gr, the decision package is used for will
Remaining load GrWith the default load G of unitsIt is compared,
If Gr≥Gs, then the result of decision is G for the load that need to open every unit in n+1 platform units, preceding n platforms unit0, n-th
The load of+1 unit is Gr,
If Gr<Gs, then the result of decision is need to open n platform units, and the load of every unit is G0+Gr/ n, master data processing elements
The result of decision is transferred to main controlling element by part；
The main controlling element is used to be distributed the operating load that combination type gas condenses heating system according to the result of decision
To each unit,
The sub-control element is used to receive main controlling element allocation result and regulates and controls corresponding unit according to allocation result
Operating load.
Wherein, the master controller also includes major error detecting element and main display element, the major error detecting element
Whether broken down for detection combination formula combustion gas condensation heating system and send fault message, the main display element is used to lead to
Cross the operation conditions of each unit of Special visible interface display, enquiry of historical data and progress parameter modification；
The combustion gas condensation heat supply unit also includes secondary fault detect element, and the secondary fault detect element is used to detect list
Whether machine breaks down and sends fault message.
Each combustion gas condensation heat supply unit also includes return water temperature sensing element, high temperature alarm switch element, flue gas protection
Element, low gas pressure are tried hard to keep protection element, air pressure error protecting element and current protection switch element.
The flue gas protection element, for detecting that flue gas pressures change, it is ensured that system is normally carried out.
The low gas pressure is tried hard to keep protection element, the situation for being less than minimum gaseous-pressure as defined in system when gaseous-pressure
Under, timely automated it can cut off burnt gas valve to protect system.
The current protection switch element, in the case of being stopped when current, controller sends stopping to system in time
The signal of operation is to protect system.
Wherein, each combustion gas condensation heat supply unit is controlled defeated come step-less adjustment by the pulse width modulation (PWM) of blower fan
Go out power, the size of power output can be adjusted according to demand.
Combination type gas condensation energy saving in heating system control method, system and the device of the present invention, with following beneficial effect
Really：
1st, the present invention condenses the operating load of heat supply unit by real-time heat demand come reasonable distribution each combustion gas, flexibly
Regulation operation power, greatly reduces operation energy consumption, the saving energy is realized to the full extent.
2nd, after combustion gas condensation heat supply unit concurrent working of the present invention, traditional power open loop or close-loop control mode are being kept
On the basis of, load control manner is newly increased, and add the various abnormal conditions such as unit for occurring in running
The processing mode of failure, shutdown etc..
3rd, the mode of above and below unit of the present invention and left and right superposition is abundant using indoor height, reduces set to greatest extent
Standby floor space, spatially realizes flexible combination installation.
4th, main display element of the invention freely sets multiple by the running status of each unit of Special visible interface display
Allocation proportion is closed, and the suitable method of operation is selected according to system operational parameters, the work(such as parameter modification, the inquiry of historical data are realized
Energy.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of combination type gas condenses energy saving in heating system control method, it is characterised in that methods described passes through combination gas
Air cooling coagulates heating system and realizes Energy Saving Control, and the system includes master controller and the multiple combustion gas being connected with the master controller
Heat supply unit is condensed, the optimized operation load of each unit is G0, the described method comprises the following steps：
S1, the total load G for obtaining present combination formula combustion gas condensation heating system；
S2, the optimized operation load G by G and n platform units0Subtract each other, until yielding less than G0Remaining load Gr, by remaining load Gr
With the default load G of unitsIt is compared,
If Gr≥Gs, then the result of decision is G for the load that need to open every unit in n+1 platform units, preceding n platforms unit0, (n+1)th
The load of unit is Gr；
If Gr<Gs, then the result of decision is need to open n platform units, and the load of every unit is G0+Gr/n；
S3, according to the result of decision control unit operation.
2. combination type gas according to claim 1 condenses energy saving in heating system control method, it is characterised in that perform step
Rapid S1, reacquires the total load G ' that combination type gas condenses heating system, G ' is compared with G,
If G ' >=G, judge the demand load increase of current system, step S2 is performed again, the unit quantity x that need to be opened is obtained
With the operating load of x platform units, the unit quantity x that need to be opened is compared with the unit quantity currently run, obtained
The unit quantity that need to be increased, Second Decision knot is generated by the operating load of the unit quantity that need to be increased and the x platforms unit
Really, and according to the Second Decision result step S3 is performed；
If G '<G, then judge that the demand load of current system reduces, step S2 performed again, the unit quantity y that need to be opened is obtained
With the operating load of y platform units, the unit quantity y that need to be opened is compared with the unit quantity currently run, obtained
The unit quantity stopped need to be subtracted, the operating load that need to subtract the unit quantity stopped and the y platforms unit is generated into Second Decision knot
Really, and according to the Second Decision result step S3 is performed.
3. combination type gas according to claim 2 condenses energy saving in heating system control method, it is characterised in that described to hold
It is additionally included in after predetermined amount of time and judges before row step S1, the total load G ' for reacquiring combination type gas condensation heating system
System heat demand has unchanged, comprises the following steps：
Step 1: determining default supply water temperature T0With the current supply water temperature T of acquisitionx；
Step 2: by Δ T=Tx-T0Calculating obtains the poor Δ T of supply water temperature, and by Δ T '=(Tx-T0)/t, which is calculated, obtains the temperature that supplies water
The poor rate of change Δ T ' of degree；
Step 3: according to supply water temperature difference Δ T and the poor rate of change Δ T ' of supply water temperature size, judging system heat demand whether there is
Change：
As Δ T>0 or Δ T<When 0, then judge that system heat demand is changed, reacquire combination type gas condensation heating system
Total load G '；
As Δ T=0, then judge that system heat demand is unchanged, system keeps existing running status.
4. the combination type gas condensation energy saving in heating system control method according to claim 1-3 any one, its feature
It is, the step of detecting system has fault-free is also included before the step S1, is specially：
If system and unit do not break down, step S1 is directly entered；
If unit breaks down, system output services are instructed and command all non-faulting units to enter step S1, and unit is excluded
S1 is advanced into after failure certainly again；
If system breaks down, there is error information in system, and unit keeps instantaneous operating conditions.
5. a kind of combination type gas condenses energy saving in heating system control system, it is characterised in that the system includes master controller
Be connected with the master controller n combustion gas condensation heat supply unit, wherein, n >=1, the master controller include acquisition module,
Processing module and control module,
The acquisition module, the total load G of heating system is condensed for obtaining the combustion gas of present combination formula；
The processing module includes computing unit and decision package, and the computing unit is used for the optimized operation by G and n platform units
Load G0Subtract each other, until yielding less than G0Remaining load Gr, the decision package is used for remaining load GrWith presetting for unit
Load GsIt is compared,
If Gr≥Gs, then the result of decision is that need to open the load of every unit in n+1 platforms combustion gas condensation heat supply unit, preceding n platforms unit
For G0, the load of (n+1)th unit is Gr；
If Gr<Gs, then the result of decision is need to open n platform units, and the load of every unit is G0+Gr/n；
The control module, for controlling unit operation according to the result of decision.
6. combination type gas according to claim 5 condenses energy saving in heating system control system, it is characterised in that described to obtain
Modulus block, is additionally operable to reacquire the total load G ' that combination type gas condenses heating system,
The processing module also includes judging unit, and the judging unit is used for the demand load increase for judging current system or subtracted
Small, the decision package is additionally operable to G ' being compared with G, if G ' >=G, unit quantity x and x the platform unit for obtaining opening
Operating load, the unit quantity x that need to be opened is compared with the unit quantity currently run, the unit that need to be increased is obtained
Quantity, Second Decision result is generated by the operating load of the unit quantity that need to be increased and the x platforms unit,
If G '<G, obtains the operating load of unit quantity y and y platform unit that need to be opened, by the unit quantity y that need to be opened with
The unit quantity currently run is compared, and obtains subtracting the unit quantity stopped, and the unit quantity stopped and the y need to be subtracted by described
The operating load generation Second Decision result of platform unit.
7. combination type gas according to claim 6 condenses energy saving in heating system control system, it is characterised in that
The acquisition module, is additionally operable to obtain current supply water temperature Tx；
The computing unit, is additionally operable to by Δ T=Tx-T0Calculating obtains the poor Δ T of supply water temperature, and by Δ T '=(Tx-T0)/t is counted
Calculation obtains the poor rate of change Δ T ' of supply water temperature；
The judging unit, is additionally operable to judge that system heat demand has unchanged according to Δ T and Δ T ' size：
As Δ T>0 or Δ T<When 0, then judge that system heat demand is changed, reacquire combination type gas condensation heating system
Total load G '；
As Δ T=0, then judge that system heat demand is unchanged, system keeps existing running status.
8. the combination type gas condensation energy saving in heating system control system according to claim 5-7 any one, its feature
It is, the master controller and unit also include being respectively used to the fault detect mould whether detecting system and unit break down
Block.
9. a kind of combination type gas condenses heating system energy-saving control device, it is characterised in that the energy-saving control device includes
Master controller and the n combustion gas condensation heat supply unit being connected with the master controller, wherein, n >=1, the combustion gas condenses heat supply
The combination of above and below unit or left and right is stacked, and the master controller condenses heat supply list by wired or wireless transmission means and each combustion gas
Machine carries out signal transmission；
The master controller includes main controlling element and master data treatment element, and each combustion gas condensation heat supply unit includes pair
Control element, secondary data acquisition element and secondary data handling component；
The secondary data acquisition element be used for gather combustion gas condensation heat supply unit include current supply water temperature TxDuty parameter number
According to；The secondary data handling component is used to carry out unit data processing and by data processing knot according to the duty parameter data
Fruit, which exports, gives master data treatment element；
The master data treatment element includes computing unit and decision package, and the computing unit is used for the total load G of system
With the optimized operation load G of n platform units0Subtract each other, until yielding less than G0Remaining load Gr, the decision package is used for will be surplus
Remaining load GrWith the default load G of unitsIt is compared,
If Gr≥Gs, then the result of decision is G for the load that need to open every unit in n+1 platform units, preceding n platforms unit0, (n+1)th
The load of unit is Gr,
If Gr<Gs, then the result of decision is need to open n platform units, and the load of every unit is G0+Gr/ n, master data treatment element will
The result of decision is transferred to main controlling element；
The main controlling element is used to be assigned to the operating load that combination type gas condenses heating system often according to the result of decision
Individual unit,
The sub-control element is used for the operation for receiving main controlling element allocation result and regulating and controlling corresponding unit according to allocation result
Load.
10. combination type gas according to claim 9 condenses heating system energy-saving control device, it is characterised in that described
Master controller also includes major error detecting element and main display element, and the major error detecting element is used for detection combination formula combustion gas
Whether condensation heating system breaks down and sends fault message, and the main display element is used to show by Special visible interface
Show the operation conditions of each unit, enquiry of historical data and progress parameter modification；
The combustion gas condensation heat supply unit also includes secondary fault detect element, and the secondary fault detect element is used to detect that unit is
No failure simultaneously sends fault message.
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