CN204678603U - A kind of control system of active adjustment water chiller-heater unit load - Google Patents
A kind of control system of active adjustment water chiller-heater unit load Download PDFInfo
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- CN204678603U CN204678603U CN201520334005.8U CN201520334005U CN204678603U CN 204678603 U CN204678603 U CN 204678603U CN 201520334005 U CN201520334005 U CN 201520334005U CN 204678603 U CN204678603 U CN 204678603U
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- heater unit
- water chiller
- load
- water pump
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 230000001105 regulatory effect Effects 0.000 claims abstract description 29
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 238000004378 air conditioning Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to the control system of air-conditioning for a kind of active adjustment water chiller-heater unit load in the control technology field of cold-heating system, the water chiller-heater unit comprising water pump and be connected with water pump, controller is connected with water pump, controller prestore the intrinsic flow of described water chiller-heater unit self and load export between corresponding relation, controller is according to user side load variations predicted value, according to corresponding relation, calculate the discharge needed by described water chiller-heater unit, and adopt flow regulating signal to be transferred to water pump, water pump is according to the described flow regulating signal received, rotating speed is changed by carrying variable frequency adjustment device, and then the discharge changed by described water chiller-heater unit, change the output load of described water chiller-heater unit.Or also connect electronic two regulating valves to realize by controller.The utility model solves the inconsistence problems of water chiller-heater unit output load and user side demand load, and the running status of effective regulation and control water chiller-heater unit and load export.
Description
Technical field
The utility model relates to the control technology field of air-conditioning for cold-heating system, be specifically related to a kind of device systems of adjustment type water chiller-heater unit load, be applicable to the cold and heat source system that various needs export according to air conditioner cold-heat predicted load active adjustment water chiller-heater unit load, especially for the cold and heat source system of district cooling and heating, there is obvious practical value.
Background technology
It is 6.90 hundred million tons of standard coals that China in 2012 builds total energy consumption (not containing biomass energy), and account for 19.1% of national energy resource consumption total amount, Energy Consumption of Public Buildings accounts for 26.4% of building total energy consumption.Air conditioner heating system is the energy consumption rich and influential family in public building, and the energy consumption of air conditioner cold-heat origin system accounts for more than 60% of whole air conditioner heating system energy consumption.Therefore, the accurate regulation and control of air conditioner cold-heat source system running state, has very important actual application value to building energy-saving, reduction of discharging.
The Load Regulation mode of usual water chiller-heater unit adopts FEEDBACK CONTROL and feedforward+FEEDBACK CONTROL two kinds of control models.The former is by the leaving water temperature of monitoring water chiller-heater unit, and the latter is by monitoring return water temperature and the leaving water temperature of water chiller-heater unit, and the load controlling water chiller-heater unit exports.Because water chiller-heater unit detects that variations in temperature often lags behind user side load variations, and hot and cold water conveyance conduit is longer, this delayed will be more obvious.Therefore, aforementioned two kinds of control modes regulate the load of water chiller-heater unit to export usually and the workload demand of user side produces inconsistent, timely response can not be made on the one hand to the workload demand change of user side, be difficult to the air conditioning requirements meeting user, the load of water chiller-heater unit may be caused on the other hand to export excessive and produce energy waste.
Utility model content
The technical problem that the utility model solves there is provided a kind of control system of active adjustment water chiller-heater unit load, for solving the inconsistence problems of water chiller-heater unit output load and user side demand load, the running status of effective regulation and control water chiller-heater unit and load export.
Usual water chiller-heater unit from inherently safe operation angle, do not allow extraneous control signal to write direct controller that water chiller-heater unit carries.Therefore, require that the control signal that water chiller-heater unit regulates load to export directly can not control water chiller-heater unit, the object that active adjustment water chiller-heater unit load exports cannot be realized.
For solving the problems of the technologies described above, scheme one of the present utility model is: a kind of control system of active adjustment water chiller-heater unit load, the water chiller-heater unit comprising water pump and be connected with described water pump, controller is connected with described water pump, described controller prestore the intrinsic flow of described water chiller-heater unit self and load export between corresponding relation, described controller is according to user side load variations predicted value, according to described corresponding relation, calculate the discharge needed by described water chiller-heater unit, and adopt flow regulating signal to be transferred to water pump, described water pump is according to the described flow regulating signal received, rotating speed is changed by carrying variable frequency adjustment device, and then the discharge changed by described water chiller-heater unit, change the output load of described water chiller-heater unit.
For solving the problems of the technologies described above, scheme two of the present utility model is: a kind of control system of active adjustment water chiller-heater unit load, the water chiller-heater unit comprising water pump and be connected with described water pump, electronic two regulating valves is connected between described water pump and described water chiller-heater unit, controller is connected with described electronic two regulating valves, described controller prestore the intrinsic flow of described water chiller-heater unit self and load export between corresponding relation, described controller is according to user side load variations predicted value, according to described corresponding relation, calculate the discharge needed by described water chiller-heater unit, and adopt flow regulating signal to be transferred to electronic two regulating valves, described electronic two regulating valves is according to the described flow regulating signal received, regulate the discharge exported by described water pump, and then the discharge changed by described water chiller-heater unit, change the output load of described water chiller-heater unit.
In above-mentioned two technical schemes, controller is according to user side load variations predicted value, according to the corresponding relation by water chiller-heater unit discharge and its output load, calculate the discharge needed by described water chiller-heater unit, and send control signal, active adjustment, by the discharge of described water chiller-heater unit, realizes changing water chiller-heater unit output load in time, in time, accurately meets customer charge demand.
Multiple standards communication protocol supported by described controller, as Lonworks communication protocol, BACNet standard agreement, HART, PROFIBUS, MODBUS, CAN, EPA, DeviceNet etc.Meanwhile, provide normal data Fabric Interface as DDC, OPC etc., be convenient to the system integration and control.Program or field programming is pre-installed when dispatching from the factory.Controller is generally made up of parts such as CPU (CPU), memory (RAM, ROM), input-output unit (I/O), power supply and programmable devices; the formation of itself belongs to prior art; any existing techniques in realizing can be adopted, do not belong in the protection domain of this patent.
Because technique scheme is used, the utility model compared with prior art has following advantages: by the workload demand change of prediction user side, initiatively change the discharge by water chiller-heater unit, the load of timely adjustment water chiller-heater unit exports, that avoids between the output load of the water chiller-heater unit occurred in existing control mode and user side demand load is inconsistent, not only can improve the comfort level of user, and more can realize energy-saving run, the reduction energy consumption of water chiller-heater unit.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model will be further described.
Fig. 1 is the system schematic of the utility model scheme one.
Fig. 2 is the system schematic of the utility model scheme two.
Detailed description of the invention
In scheme one as shown in Figure 1, controller 1 sends flow control signal feed pump 2, and water pump 2 regulates the flow by water chiller-heater unit 3 according to the flow control signal received, thus the load changing water chiller-heater unit 3 exports.Controller 1 should prestore the intrinsic flow of water chiller-heater unit 3 self and load export between corresponding relation, controller 1 needs the flow by water chiller-heater unit 3 according to user side load variations predictor calculation, and flow regulating signal is transferred to water pump 2.Water pump 2, according to the flow regulating signal received, changes rotating speed by carrying variable frequency adjustment device, and then changes the flow by water chiller-heater unit 3.Controller 1, between water pump 2 and water chiller-heater unit 3, there is one-to-one relationship, be one group shown in figure, also can adopt many groups, realize the team control of multiple stage, polymorphic type water chiller-heater unit.
In scheme two as shown in Figure 2, controller 1 sends flow control signal to electronic two regulating valves 4, and electronic two regulating valves 4 regulates the flow by water chiller-heater unit 3 according to the flow control signal received, thus the load changing usual water chiller-heater unit 3 exports.Controller 1 should prestore the intrinsic flow of water chiller-heater unit 3 self and load export between corresponding relation, controller 1 needs the flow by water chiller-heater unit 3 according to user side load variations predictor calculation, and flow regulating signal is transferred to electronic two regulating valves 4.Electronic two regulating valves 4, according to the flow regulating signal received, changes its aperture by carrying executing agency, and then changes the flow by water chiller-heater unit 3.Controller 1, water pump 2, between electronic two regulating valves 4 and water chiller-heater unit 3, there is one-to-one relationship, be one group shown in figure, also can adopt many groups, realize the team control of multiple stage, polymorphic type water chiller-heater unit.
Below respectively detailed introduction has been done to two embodiment control programs.For one of ordinary skill in the art, according to the thought of the utility model embodiment, all will change in specific embodiments and applications, as analogized by the control program of water chiller-heater unit inlet outlet pressure differential regulating pondage.In sum, this description should not be construed as restriction of the present utility model, and all any changes made according to control thought described in the utility model are all within protection domain of the present utility model.
Claims (2)
1. the control system of an active adjustment water chiller-heater unit load, the water chiller-heater unit (3) comprising water pump (2) and be connected with described water pump (2), it is characterized in that: controller (1) is connected with described water pump (2), described controller (1) prestore self intrinsic flow of described water chiller-heater unit (3) and load export between corresponding relation, described controller (1) is according to user side load variations predicted value, according to described corresponding relation, calculate the discharge needed by described water chiller-heater unit (3), and adopt flow regulating signal to be transferred to water pump (2), described water pump (2) is according to the described flow regulating signal received, rotating speed is changed by carrying variable frequency adjustment device, and then the discharge changed by described water chiller-heater unit (3), change the output load of described water chiller-heater unit (3).
2. the control system of an active adjustment water chiller-heater unit load, the water chiller-heater unit (3) comprising water pump (2) and be connected with described water pump (2), it is characterized in that: electronic two regulating valves (4) is connected between described water pump (2) and described water chiller-heater unit (3), controller (1) is connected with described electronic two regulating valves (4), described controller (1) prestore self intrinsic flow of described water chiller-heater unit (3) and load export between corresponding relation, described controller (1) is according to user side load variations predicted value, according to described corresponding relation, calculate the discharge needed by described water chiller-heater unit (3), and adopt flow regulating signal to be transferred to electronic two regulating valves (4), described electronic two regulating valves (4) is according to the described flow regulating signal received, regulate the discharge exported by described water pump (2), and then the discharge changed by described water chiller-heater unit (3), change the output load of described water chiller-heater unit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520334005.8U CN204678603U (en) | 2015-05-22 | 2015-05-22 | A kind of control system of active adjustment water chiller-heater unit load |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520334005.8U CN204678603U (en) | 2015-05-22 | 2015-05-22 | A kind of control system of active adjustment water chiller-heater unit load |
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| CN204678603U true CN204678603U (en) | 2015-09-30 |
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| CN201520334005.8U Expired - Fee Related CN204678603U (en) | 2015-05-22 | 2015-05-22 | A kind of control system of active adjustment water chiller-heater unit load |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896661A (en) * | 2015-05-22 | 2015-09-09 | 华东建筑设计研究院有限公司 | Control system for actively adjusting load of water chiller-heater unit |
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2015
- 2015-05-22 CN CN201520334005.8U patent/CN204678603U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896661A (en) * | 2015-05-22 | 2015-09-09 | 华东建筑设计研究院有限公司 | Control system for actively adjusting load of water chiller-heater unit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |