CN102954532A - Multi-zone heat supply system and method for controlling same - Google Patents
Multi-zone heat supply system and method for controlling same Download PDFInfo
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- CN102954532A CN102954532A CN2011102426359A CN201110242635A CN102954532A CN 102954532 A CN102954532 A CN 102954532A CN 2011102426359 A CN2011102426359 A CN 2011102426359A CN 201110242635 A CN201110242635 A CN 201110242635A CN 102954532 A CN102954532 A CN 102954532A
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Abstract
The invention discloses a multi-zone heat supply system which comprises a thermoelectric unit, a plurality of heat supply zones, a signal conversion device, a monitoring device, an adjustment amount computing device and an adjusting device. The invention further discloses a method for controlling the multi-zone heat supply system. The method is applied to the multi-zone heat supply system and includes a signal collection step, a signal conversion step, a computing step, an adjustment amount computing step and an adjusting step. The multi-zone heat supply system and the method for controlling the heat supply system have the advantages that the running condition of the heat supply system can be monitored in real time, and the problem of overload or unbalance load is prevented.
Description
Technical field
The present invention relates to the control technology of heating system, relate in particular to a kind of multizone heating system and control method thereof.
Background technology
Heat-supplying mode commonly used has dispersed supply of heating and central heating two large classes.Locate on the spot dispersed supply of heating the user, because of the heat supplying scale restriction, can only adopt the not high miniature boiler of the low parameter thermal efficiency (thermal efficiency is about 50%).Yet then form central heating by steam power plant's heat supply, because heat supplying scale is large, can adopts the high efficiency large-sized boiler of high parameter (thermal efficiency is more than 85%), thereby the using energy source benefit is greatly improved, saved fuel.
Although steam power plant has the thermoelectric unit that large-sized boiler forms, in fact, the scale of thermoelectric unit and power or smaller.When heat supply is carried out in a plurality of zones, need to effectively control heating system, prevent the situation of excess load or load imbalance.
Summary of the invention
The present invention is intended to propose a kind of multizone heating system based on thermoelectric unit and the control method of heating system.
According to one embodiment of the invention, a kind of multizone heating system is proposed, comprising: thermoelectric unit, several heat supply sections, chromacoder, supervising device, adjustment amount calculation element and adjusting device.
Each heat supply section is a district heating, several heat supply sections and thermoelectric unit UNICOM, each heat supply section comprises hot water feed line and cold water recovery line, hot water feed line and cold water recovery line are respectively by hot-water valve and Cold water tap control, have temperature sensor and flow sensor in the hot water feed line, has flow sensor in the cold water recovery line, hot-water valve and Cold water tap produce the thermal valve aperture signal of telecommunication and the low temperature valve aperture signal of telecommunication according to current valve opening, and temperature sensor produces the water temperature signal of telecommunication, flow sensor in hot water feed line and the cold water recovery line produces respectively the hot water flow signal of telecommunication and the cold water flow signal of telecommunication.
Chromacoder is collected the thermal valve aperture signal of telecommunication, the low temperature valve aperture signal of telecommunication, the water temperature signal of telecommunication, the hot water flow signal of telecommunication and the cold water flow signal of telecommunication of each heat supply section, through the laggard row analog-to-digital conversion of filtering, produce the data signal that is used for each heat supply section, comprising: thermal valve aperture, low temperature valve aperture, water temperature, hot water flow and cold water flow.
Supervising device is connected to chromacoder, obtain thermal valve aperture, low temperature valve aperture, water temperature, hot water flow and the cold water flow of each heat supply section, calculate based on the water temperature of each heat supply section, hot water flow and cold water flow: average water temperature, evenly heat discharge, average cold water flow, total hot water flow, total cold water flow.
The adjustment amount calculation element is connected to supervising device, the adjustment amount calculation element is carried out following adjustment amount and is calculated: if total hot water flow surpasses the hot water amount supplied definite value of thermoelectric unit, then with the hot water amount supplied definite value of thermoelectric unit as setting value, calculate the thermal valve aperture adjustment amount of all heat supply sections.Reclaim rated value if total cold water flow surpasses the cold water of thermoelectric unit, then the cold water with thermoelectric unit reclaims rated value as setting value, calculates the low temperature valve aperture adjustment amount of all heat supply sections.When total hot water flow is no more than the hot water amount supplied definite value of thermoelectric unit, based on hot water flow and the evenly heat discharge of each heat supply section, take evenly heat discharge as setting value, calculate the thermal valve aperture adjustment amount of this heat supply section.When total cold water flow was no more than the cold feed rated value of thermoelectric unit, cold water flow and average cold water flow based on each heat supply section take average cold water flow as setting value, calculated the low temperature valve aperture adjustment amount of this heat supply section.According to average water temperature and set water temperature, calculate thermoelectric unit power adjustment.
Adjusting device is connected to the adjustment amount calculation element, and according to thermal valve aperture adjustment amount, low temperature valve aperture adjustment amount and thermoelectric unit power adjustment, to hot-water valve and the Cold water tap of each heat supply section, and the power of thermoelectric unit is adjusted.
In one embodiment, the thermal valve aperture signal of telecommunication, the low temperature valve aperture signal of telecommunication, the water temperature signal of telecommunication, the heat flow signal of telecommunication and the cold flow signal of telecommunication are the analog electrical signal of 5mA～36mA.The data signal of thermal valve aperture, low temperature valve aperture, water temperature, hot water flow and cold water flow is 5 position digital signals, minute 32 grades, respectively an analog electrical signal among corresponding 5mA～36mA.
In one embodiment, the thermal valve aperture adjustment amount that calculates all heat supply sections comprises current total hot water flow and setting value is carried out proportional integral, obtain the total adjustment amount of thermal valve aperture, the total adjustment amount of thermal valve aperture obtains the thermal valve aperture adjustment amount of each heat supply section divided by the quantity of heat supply section.The low temperature valve aperture adjustment amount that calculates all heat supply sections comprises current total cold water flow and setting value is carried out proportional integral, obtain the total adjustment amount of low temperature valve aperture, the total adjustment amount of low temperature valve aperture obtains the low temperature valve aperture adjustment amount of each heat supply section divided by the quantity of heat supply section.The thermal valve aperture adjustment amount that calculates a heat supply section comprises: current hot water flow and the setting value of this heat supply section are carried out proportional integral, obtain thermal valve aperture adjustment amount, if current hot water flow is greater than setting value, then thermal valve aperture adjustment amount is the aperture that reduces hot-water valve, if current hot water flow is less than setting value, then thermal valve aperture adjustment amount is for increasing the aperture of hot-water valve.The low temperature valve aperture adjustment amount that calculates a heat supply section comprises: current cold water flow and the setting value of this heat supply section are carried out proportional integral, obtain low temperature valve aperture adjustment amount, if current cold water flow is greater than setting value, then low temperature valve aperture adjustment amount is the aperture that reduces Cold water tap, if current cold water flow is less than setting value, then low temperature valve aperture adjustment amount is for increasing the aperture of Cold water tap.
In one embodiment, calculating thermoelectric unit power adjustment comprises: average water temperature and set water temperature are carried out proportional integral, obtain the whole amount of the thermoelectric power of the assembling unit, if average water temperature is greater than set water temperature, then the whole amount of the thermoelectric power of the assembling unit is for reducing the thermoelectric power of the assembling unit, if average water temperature is less than set water temperature, then the whole amount of the thermoelectric power of the assembling unit is for increasing the thermoelectric power of the assembling unit.
According to one embodiment of the invention, a kind of control method of multizone heating system is proposed, be applied to above-mentioned multizone heating system, the method comprises:
The signal collection step, collect hot-water valve and Cold water tap produce according to current valve opening in each heat supply section the thermal valve aperture signal of telecommunication and the low temperature valve aperture signal of telecommunication, the hot water flow signal of telecommunication and the cold water flow signal of telecommunication that the flow sensor in the water temperature signal of telecommunication, hot water feed line and the cold water recovery line that temperature sensor produces produces;
The signal switch process, the thermal valve aperture signal of telecommunication, the low temperature valve aperture signal of telecommunication, the water temperature signal of telecommunication, the hot water flow signal of telecommunication of each heat supply section of collecting are passed through the laggard row analog-to-digital conversion of filtering with the cold water flow signal of telecommunication, produce the data signal that is used for each heat supply section, comprising: thermal valve aperture, low temperature valve aperture, water temperature, hot water flow and cold water flow;
Calculation procedure is calculated based on the water temperature of each heat supply section, hot water flow and cold water flow: average water temperature, evenly heat discharge, average cold water flow, total hot water flow, total cold water flow;
The adjustment amount calculation procedure:
If total hot water flow surpasses the hot water amount supplied definite value of thermoelectric unit, then with the hot water amount supplied definite value of thermoelectric unit as setting value, calculate the thermal valve aperture adjustment amount of all heat supply sections;
Reclaim rated value if total cold water flow surpasses the cold water of thermoelectric unit, then the cold water with thermoelectric unit reclaims rated value as setting value, calculates the low temperature valve aperture adjustment amount of all heat supply sections;
When total hot water flow is no more than the hot water amount supplied definite value of thermoelectric unit, based on hot water flow and the evenly heat discharge of each heat supply section, take evenly heat discharge as setting value, calculate the thermal valve aperture adjustment amount of this heat supply section;
When total cold water flow was no more than the cold feed rated value of thermoelectric unit, cold water flow and average cold water flow based on each heat supply section take average cold water flow as setting value, calculated the low temperature valve aperture adjustment amount of this heat supply section;
According to average water temperature and set water temperature, calculate thermoelectric unit power adjustment;
Regulating step, according to described thermal valve aperture adjustment amount, low temperature valve aperture adjustment amount and thermoelectric unit power adjustment, to hot-water valve and the Cold water tap of each heat supply section, and the power of thermoelectric unit is adjusted.
In one embodiment, the thermal valve aperture signal of telecommunication, the low temperature valve aperture signal of telecommunication, the water temperature signal of telecommunication, the heat flow signal of telecommunication and the cold flow signal of telecommunication are the analog electrical signal of 5mA～36mA.The data signal of thermal valve aperture, low temperature valve aperture, water temperature, hot water flow and cold water flow is 5 position digital signals, minute 32 grades, respectively an analog electrical signal among corresponding 5mA～36mA.
In one embodiment, the thermal valve aperture adjustment amount that calculates all heat supply sections comprises current total hot water flow and setting value is carried out proportional integral, obtain the total adjustment amount of thermal valve aperture, the total adjustment amount of thermal valve aperture obtains the thermal valve aperture adjustment amount of each heat supply section divided by the quantity of heat supply section.The low temperature valve aperture adjustment amount that calculates all heat supply sections comprises current total cold water flow and setting value is carried out proportional integral, obtain the total adjustment amount of low temperature valve aperture, the total adjustment amount of low temperature valve aperture obtains the low temperature valve aperture adjustment amount of each heat supply section divided by the quantity of heat supply section.The thermal valve aperture adjustment amount that calculates a heat supply section comprises: current hot water flow and the setting value of this heat supply section are carried out proportional integral, obtain thermal valve aperture adjustment amount, if current hot water flow is greater than setting value, then thermal valve aperture adjustment amount is the aperture that reduces hot-water valve, if current hot water flow is less than setting value, then thermal valve aperture adjustment amount is for increasing the aperture of hot-water valve.The low temperature valve aperture adjustment amount that calculates a heat supply section comprises: current cold water flow and the setting value of this heat supply section are carried out proportional integral, obtain low temperature valve aperture adjustment amount, if current cold water flow is greater than setting value, then low temperature valve aperture adjustment amount is the aperture that reduces Cold water tap, if current cold water flow is less than setting value, then low temperature valve aperture adjustment amount is for increasing the aperture of Cold water tap.
In one embodiment, calculating thermoelectric unit power adjustment comprises: average water temperature and set water temperature are carried out proportional integral, obtain the whole amount of the thermoelectric power of the assembling unit, if average water temperature is greater than set water temperature, then the whole amount of the thermoelectric power of the assembling unit is for reducing the thermoelectric power of the assembling unit, if average water temperature is less than set water temperature, then the whole amount of the thermoelectric power of the assembling unit is for increasing the thermoelectric power of the assembling unit.
Adopt the control method of multizone heating system of the present invention and heating system, can carry out real-time monitoring to the operation conditions of heating system, prevent the problem of excess load or load imbalance.
Description of drawings
Fig. 1 has disclosed the structure chart according to the multizone heating system of one embodiment of the invention.
Fig. 2 has disclosed the flow chart according to the control method of the multizone heating system of one embodiment of the invention.
The specific embodiment
With reference to shown in Figure 1, disclosed the multizone heating system according to one embodiment of the invention, this multizone heating system 100 comprises: thermoelectric unit 102, several heat supply sections 104, chromacoder 106, supervising device 108, adjustment amount calculation element 110 and adjusting device 112.
Each heat supply section in several heat supply sections 104 is a district heating.Several heat supply sections and thermoelectric unit 102 UNICOMs.Each heat supply section comprises hot water feed line 140 and cold water recovery line 142.Hot water feed line 140 and cold water recovery line 142 are respectively by hot-water valve 141 and Cold water tap 143 controls.Have temperature sensor 144 and first flow sensor 146 in the hot water feed line 140, have second quantity sensor 148 in the cold water recovery line 142.Hot-water valve 141 produces the thermal valve aperture signal of telecommunication and the low temperature valve aperture signal of telecommunication with Cold water tap 143 according to current valve opening.Temperature sensor 144 produces the water temperature signal of telecommunication.First flow sensor 144 in hot water feed line 140 and the cold water recovery line 142 and second quantity sensor 146 produce respectively the hot water flow signal of telecommunication and the cold water flow signal of telecommunication.
Adjustment amount calculation element 110 is connected to supervising device 108.Adjustment amount calculation element 110 is carried out following calculating:
1) if total hot water flow surpasses the hot water amount supplied definite value of thermoelectric unit, then with the hot water amount supplied definite value of thermoelectric unit as setting value, calculate the thermal valve aperture adjustment amount of all heat supply sections.In one embodiment, the thermal valve aperture adjustment amount that calculates all heat supply sections comprises current total hot water flow and setting value is carried out proportional integral, obtain the total adjustment amount of thermal valve aperture, the total adjustment amount of thermal valve aperture obtains the thermal valve aperture adjustment amount of each heat supply section divided by the quantity of heat supply section.
2) reclaim rated value if total cold water flow surpasses the cold water of thermoelectric unit, then the cold water with thermoelectric unit reclaims rated value as setting value, calculates the low temperature valve aperture adjustment amount of all heat supply sections.In one embodiment, the low temperature valve aperture adjustment amount that calculates all heat supply sections comprises current total cold water flow and setting value is carried out proportional integral, obtain the total adjustment amount of low temperature valve aperture, the total adjustment amount of low temperature valve aperture obtains the low temperature valve aperture adjustment amount of each heat supply section divided by the quantity of heat supply section.
3) when total hot water flow is no more than the hot water amount supplied definite value of thermoelectric unit, based on hot water flow and the evenly heat discharge of each heat supply section, take evenly heat discharge as setting value, calculate the thermal valve aperture adjustment amount of this heat supply section.In one embodiment, the thermal valve aperture adjustment amount that calculates some heat supply sections comprises: current hot water flow and the setting value of this heat supply section are carried out proportional integral, obtain thermal valve aperture adjustment amount, if current hot water flow is greater than setting value, then thermal valve aperture adjustment amount is the aperture that reduces hot-water valve, if current hot water flow is less than setting value, then thermal valve aperture adjustment amount is for increasing the aperture of hot-water valve.
4) when total cold water flow is no more than the cold feed rated value of thermoelectric unit, cold water flow and average cold water flow based on each heat supply section take average cold water flow as setting value, calculate the low temperature valve aperture adjustment amount of this heat supply section.In one embodiment, the low temperature valve aperture adjustment amount that calculates some heat supply sections comprises: current cold water flow and the setting value of this heat supply section are carried out proportional integral, obtain low temperature valve aperture adjustment amount, if current cold water flow is greater than setting value, then low temperature valve aperture adjustment amount is the aperture that reduces Cold water tap, if current cold water flow is less than setting value, then low temperature valve aperture adjustment amount is for increasing the aperture of Cold water tap.
5) according to average water temperature and set water temperature, calculate thermoelectric unit power adjustment.In one embodiment, calculating thermoelectric unit power adjustment comprises: average water temperature and set water temperature are carried out proportional integral, obtain the whole amount of the thermoelectric power of the assembling unit, if average water temperature is greater than set water temperature, then the whole amount of the thermoelectric power of the assembling unit is for reducing the thermoelectric power of the assembling unit, if average water temperature is less than set water temperature, then the whole amount of the thermoelectric power of the assembling unit is for increasing the thermoelectric power of the assembling unit.
Adjusting device 112 is connected to adjustment amount calculation element 110, adjusting device 112 is according to thermal valve aperture adjustment amount, low temperature valve aperture adjustment amount and thermoelectric unit power adjustment, to hot-water valve and the Cold water tap of each heat supply section, and the power of thermoelectric unit 102 is adjusted.
With reference to shown in Figure 2, the present invention has also disclosed a kind of control method of multizone heating system, and the method is applied to multizone heating system as shown in Figure 1, and the method 200 comprises:
Adjustment amount calculation procedure 208, in adjustment amount calculation procedure 208, carry out following calculating:
1) if total hot water flow surpasses the hot water amount supplied definite value of thermoelectric unit, then with the hot water amount supplied definite value of thermoelectric unit as setting value, calculate the thermal valve aperture adjustment amount of all heat supply sections.In one embodiment, the thermal valve aperture adjustment amount that calculates all heat supply sections comprises current total hot water flow and setting value is carried out proportional integral, obtain the total adjustment amount of thermal valve aperture, the total adjustment amount of thermal valve aperture obtains the thermal valve aperture adjustment amount of each heat supply section divided by the quantity of heat supply section.
2) reclaim rated value if total cold water flow surpasses the cold water of thermoelectric unit, then the cold water with thermoelectric unit reclaims rated value as setting value, calculates the low temperature valve aperture adjustment amount of all heat supply sections.In one embodiment, the low temperature valve aperture adjustment amount that calculates all heat supply sections comprises current total cold water flow and setting value is carried out proportional integral, obtain the total adjustment amount of low temperature valve aperture, the total adjustment amount of low temperature valve aperture obtains the low temperature valve aperture adjustment amount of each heat supply section divided by the quantity of heat supply section.
3) when total hot water flow is no more than the hot water amount supplied definite value of thermoelectric unit, based on hot water flow and the evenly heat discharge of each heat supply section, take evenly heat discharge as setting value, calculate the thermal valve aperture adjustment amount of this heat supply section.In one embodiment, the thermal valve aperture adjustment amount that calculates some heat supply sections comprises: current hot water flow and the setting value of this heat supply section are carried out proportional integral, obtain thermal valve aperture adjustment amount, if current hot water flow is greater than setting value, then thermal valve aperture adjustment amount is the aperture that reduces hot-water valve, if current hot water flow is less than setting value, then thermal valve aperture adjustment amount is for increasing the aperture of hot-water valve.
4) when total cold water flow is no more than the cold feed rated value of thermoelectric unit, cold water flow and average cold water flow based on each heat supply section take average cold water flow as setting value, calculate the low temperature valve aperture adjustment amount of this heat supply section.In one embodiment, the low temperature valve aperture adjustment amount that calculates some heat supply sections comprises: current cold water flow and the setting value of this heat supply section are carried out proportional integral, obtain low temperature valve aperture adjustment amount, if current cold water flow is greater than setting value, then low temperature valve aperture adjustment amount is the aperture that reduces Cold water tap, if current cold water flow is less than setting value, then low temperature valve aperture adjustment amount is for increasing the aperture of Cold water tap.
5) according to average water temperature and set water temperature, calculate thermoelectric unit power adjustment.In one embodiment, calculating thermoelectric unit power adjustment comprises: average water temperature and set water temperature are carried out proportional integral, obtain the whole amount of the thermoelectric power of the assembling unit, if average water temperature is greater than set water temperature, then the whole amount of the thermoelectric power of the assembling unit is for reducing the thermoelectric power of the assembling unit, if average water temperature is less than set water temperature, then the whole amount of the thermoelectric power of the assembling unit is for increasing the thermoelectric power of the assembling unit.
Regulating step 210, according to thermal valve aperture adjustment amount, low temperature valve aperture adjustment amount and thermoelectric unit power adjustment, to hot-water valve and the Cold water tap of each heat supply section, and the power of thermoelectric unit is adjusted.
Adopt the control method of multizone heating system of the present invention and heating system, can carry out real-time monitoring to the operation conditions of heating system, prevent the problem of excess load or load imbalance.
Claims (10)
1. a multizone heating system is characterized in that, comprising:
Thermoelectric unit;
Several heat supply sections, each heat supply section is a district heating, described several heat supply sections and thermoelectric unit UNICOM, each heat supply section comprises hot water feed line and cold water recovery line, described hot water feed line and cold water recovery line are respectively by hot-water valve and Cold water tap control, have temperature sensor and flow sensor in the described hot water feed line, has flow sensor in the described cold water recovery line, described hot-water valve and Cold water tap produce the thermal valve aperture signal of telecommunication and the low temperature valve aperture signal of telecommunication according to current valve opening, and described temperature sensor produces the water temperature signal of telecommunication, flow sensor in described hot water feed line and the cold water recovery line produces respectively the hot water flow signal of telecommunication and the cold water flow signal of telecommunication;
Chromacoder, collect the thermal valve aperture signal of telecommunication, the low temperature valve aperture signal of telecommunication, the water temperature signal of telecommunication, the hot water flow signal of telecommunication and the cold water flow signal of telecommunication of each heat supply section, through the laggard row analog-to-digital conversion of filtering, produce the data signal that is used for each heat supply section, comprising: thermal valve aperture, low temperature valve aperture, water temperature, hot water flow and cold water flow;
Supervising device, be connected to described chromacoder, obtain thermal valve aperture, low temperature valve aperture, water temperature, hot water flow and the cold water flow of each heat supply section, calculate based on the water temperature of each heat supply section, hot water flow and cold water flow: average water temperature, evenly heat discharge, average cold water flow, total hot water flow, total cold water flow;
The adjustment amount calculation element is connected to described supervising device,
If total hot water flow surpasses the hot water amount supplied definite value of thermoelectric unit, then with the hot water amount supplied definite value of thermoelectric unit as setting value, calculate the thermal valve aperture adjustment amount of all heat supply sections;
Reclaim rated value if total cold water flow surpasses the cold water of thermoelectric unit, then the cold water with thermoelectric unit reclaims rated value as setting value, calculates the low temperature valve aperture adjustment amount of all heat supply sections;
When total hot water flow is no more than the hot water amount supplied definite value of thermoelectric unit, based on hot water flow and the evenly heat discharge of each heat supply section, take evenly heat discharge as setting value, calculate the thermal valve aperture adjustment amount of this heat supply section;
When total cold water flow was no more than the cold feed rated value of thermoelectric unit, cold water flow and average cold water flow based on each heat supply section take average cold water flow as setting value, calculated the low temperature valve aperture adjustment amount of this heat supply section;
According to average water temperature and set water temperature, calculate thermoelectric unit power adjustment;
Adjusting device is connected to described adjustment amount calculation element, and according to described thermal valve aperture adjustment amount, low temperature valve aperture adjustment amount and thermoelectric unit power adjustment, to hot-water valve and the Cold water tap of each heat supply section, and the power of thermoelectric unit is adjusted.
2. multizone heating system as claimed in claim 1 is characterized in that,
The described thermal valve aperture signal of telecommunication, the low temperature valve aperture signal of telecommunication, the water temperature signal of telecommunication, the heat flow signal of telecommunication and the cold flow signal of telecommunication are the analog electrical signal of 5mA～36mA.
3. multizone heating system as claimed in claim 2, it is characterized in that, the data signal of described thermal valve aperture, low temperature valve aperture, water temperature, hot water flow and cold water flow is 5 position digital signals, minute 32 grades, respectively an analog electrical signal among corresponding 5mA～36mA.
4. multizone heating system as claimed in claim 1 is characterized in that,
The thermal valve aperture adjustment amount that calculates all heat supply sections comprises current total hot water flow and setting value is carried out proportional integral, obtain the total adjustment amount of thermal valve aperture, the total adjustment amount of thermal valve aperture obtains the thermal valve aperture adjustment amount of each heat supply section divided by the quantity of heat supply section;
The low temperature valve aperture adjustment amount that calculates all heat supply sections comprises current total cold water flow and setting value is carried out proportional integral, obtain the total adjustment amount of low temperature valve aperture, the total adjustment amount of low temperature valve aperture obtains the low temperature valve aperture adjustment amount of each heat supply section divided by the quantity of heat supply section;
The thermal valve aperture adjustment amount that calculates a heat supply section comprises: current hot water flow and the setting value of this heat supply section are carried out proportional integral, obtain thermal valve aperture adjustment amount, if current hot water flow is greater than setting value, then thermal valve aperture adjustment amount is the aperture that reduces hot-water valve, if current hot water flow is less than setting value, then thermal valve aperture adjustment amount is for increasing the aperture of hot-water valve;
The low temperature valve aperture adjustment amount that calculates a heat supply section comprises: current cold water flow and the setting value of this heat supply section are carried out proportional integral, obtain low temperature valve aperture adjustment amount, if current cold water flow is greater than setting value, then low temperature valve aperture adjustment amount is the aperture that reduces Cold water tap, if current cold water flow is less than setting value, then low temperature valve aperture adjustment amount is for increasing the aperture of Cold water tap.
5. multizone heating system as claimed in claim 1, it is characterized in that, calculating thermoelectric unit power adjustment comprises: average water temperature and set water temperature are carried out proportional integral, obtain the whole amount of the thermoelectric power of the assembling unit, if average water temperature is greater than set water temperature, then the whole amount of the thermoelectric power of the assembling unit is for reducing the thermoelectric power of the assembling unit, if on average water temperature is less than set water temperature, then the whole amount of the thermoelectric power of the assembling unit is for increasing the thermoelectric power of the assembling unit.
6. the control method of a multizone heating system is applied to as claimed in claim 1 multizone heating system, it is characterized in that the method comprises:
The signal collection step, collect hot-water valve and Cold water tap produce according to current valve opening in each heat supply section the thermal valve aperture signal of telecommunication and the low temperature valve aperture signal of telecommunication, the hot water flow signal of telecommunication and the cold water flow signal of telecommunication that the flow sensor in the water temperature signal of telecommunication, hot water feed line and the cold water recovery line that temperature sensor produces produces;
The signal switch process, the thermal valve aperture signal of telecommunication, the low temperature valve aperture signal of telecommunication, the water temperature signal of telecommunication, the hot water flow signal of telecommunication of each heat supply section of collecting are passed through the laggard row analog-to-digital conversion of filtering with the cold water flow signal of telecommunication, produce the data signal that is used for each heat supply section, comprising: thermal valve aperture, low temperature valve aperture, water temperature, hot water flow and cold water flow;
Calculation procedure is calculated based on the water temperature of each heat supply section, hot water flow and cold water flow: average water temperature, evenly heat discharge, average cold water flow, total hot water flow, total cold water flow;
The adjustment amount calculation procedure:
If total hot water flow surpasses the hot water amount supplied definite value of thermoelectric unit, then with the hot water amount supplied definite value of thermoelectric unit as setting value, calculate the thermal valve aperture adjustment amount of all heat supply sections;
Reclaim rated value if total cold water flow surpasses the cold water of thermoelectric unit, then the cold water with thermoelectric unit reclaims rated value as setting value, calculates the low temperature valve aperture adjustment amount of all heat supply sections;
When total hot water flow is no more than the hot water amount supplied definite value of thermoelectric unit, based on hot water flow and the evenly heat discharge of each heat supply section, take evenly heat discharge as setting value, calculate the thermal valve aperture adjustment amount of this heat supply section;
When total cold water flow was no more than the cold feed rated value of thermoelectric unit, cold water flow and average cold water flow based on each heat supply section take average cold water flow as setting value, calculated the low temperature valve aperture adjustment amount of this heat supply section;
According to average water temperature and set water temperature, calculate thermoelectric unit power adjustment;
Regulating step, according to described thermal valve aperture adjustment amount, low temperature valve aperture adjustment amount and thermoelectric unit power adjustment, to hot-water valve and the Cold water tap of each heat supply section, and the power of thermoelectric unit is adjusted.
7. the control method of multizone heating system as claimed in claim 6 is characterized in that,
The described thermal valve aperture signal of telecommunication, the low temperature valve aperture signal of telecommunication, the water temperature signal of telecommunication, the heat flow signal of telecommunication and the cold flow signal of telecommunication are the analog electrical signal of 5mA～36mA.
8. the control method of multizone heating system as claimed in claim 7, it is characterized in that, the data signal of described thermal valve aperture, low temperature valve aperture, water temperature, hot water flow and cold water flow is 5 position digital signals, minute 32 grades, respectively an analog electrical signal among corresponding 5mA～36mA.
9. the control method of multizone heating system as claimed in claim 6 is characterized in that,
The thermal valve aperture adjustment amount that calculates all heat supply sections comprises current total hot water flow and setting value is carried out proportional integral, obtain the total adjustment amount of thermal valve aperture, the total adjustment amount of thermal valve aperture obtains the thermal valve aperture adjustment amount of each heat supply section divided by the quantity of heat supply section;
The low temperature valve aperture adjustment amount that calculates all heat supply sections comprises current total cold water flow and setting value is carried out proportional integral, obtain the total adjustment amount of low temperature valve aperture, the total adjustment amount of low temperature valve aperture obtains the low temperature valve aperture adjustment amount of each heat supply section divided by the quantity of heat supply section;
The thermal valve aperture adjustment amount that calculates a heat supply section comprises: current hot water flow and the setting value of this heat supply section are carried out proportional integral, obtain thermal valve aperture adjustment amount, if current hot water flow is greater than setting value, then thermal valve aperture adjustment amount is the aperture that reduces hot-water valve, if current hot water flow is less than setting value, then thermal valve aperture adjustment amount is for increasing the aperture of hot-water valve;
The low temperature valve aperture adjustment amount that calculates a heat supply section comprises: current cold water flow and the setting value of this heat supply section are carried out proportional integral, obtain low temperature valve aperture adjustment amount, if current cold water flow is greater than setting value, then low temperature valve aperture adjustment amount is the aperture that reduces Cold water tap, if current cold water flow is less than setting value, then low temperature valve aperture adjustment amount is for increasing the aperture of Cold water tap.
10. the control method of multizone heating system as claimed in claim 6, it is characterized in that, calculating thermoelectric unit power adjustment comprises: average water temperature and set water temperature are carried out proportional integral, obtain the whole amount of the thermoelectric power of the assembling unit, if average water temperature is greater than set water temperature, then the whole amount of the thermoelectric power of the assembling unit is for reducing the thermoelectric power of the assembling unit, if on average water temperature is less than set water temperature, then the whole amount of the thermoelectric power of the assembling unit is for increasing the thermoelectric power of the assembling unit.
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| CN201110242635.9A CN102954532B (en) | 2011-08-23 | Multizone heating system and control method thereof |
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| CN201110242635.9A CN102954532B (en) | 2011-08-23 | Multizone heating system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103344007A (en) * | 2013-07-16 | 2013-10-09 | 广州柏诚智能科技有限公司 | Energy-saving controlling mode of valve control ultrasonic heat meter |
| CN106969409A (en) * | 2015-11-16 | 2017-07-21 | 丹佛斯有限公司 | Heat load balance |
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| CN106969409A (en) * | 2015-11-16 | 2017-07-21 | 丹佛斯有限公司 | Heat load balance |
| CN106969409B (en) * | 2015-11-16 | 2020-01-10 | 丹佛斯有限公司 | Thermal load balancing |
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