CN106500280A - A kind of control system and control method at the cold station of central air-conditioning - Google Patents
A kind of control system and control method at the cold station of central air-conditioning Download PDFInfo
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- CN106500280A CN106500280A CN201611237439.1A CN201611237439A CN106500280A CN 106500280 A CN106500280 A CN 106500280A CN 201611237439 A CN201611237439 A CN 201611237439A CN 106500280 A CN106500280 A CN 106500280A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Other Air-Conditioning Systems (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides the control system and control method at a kind of cold station of central air-conditioning, the cold station of central air-conditioning includes multiple cold station equipment groups；Control system includes multiple control modules, and each control module is corresponding with the one or more cold station equipment in a cold station equipment group to be connected, for controlling the operational factor of cold station equipment；When control module is additionally operable to the operation number of units of cold station equipment in the cold station equipment group which controls and changes, the parameter requirements changing value of cold station equipment group is sent to other control modules of corresponding connection, so that other control modules adjust the operation number of units of cold station equipment in the cold station equipment group of its control according to parameter requirements changing value.As a control module is only connected with a kind of cold station equipment, therefore, only each control module need to be connected according to the annexation in water system between cold station equipment, such that it is able to reduce construction cycle and human input；And it is possible to improve the operational energy efficiency at the cold station of central air-conditioning, reduce the energy consumption at the cold station of central air-conditioning.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly, it relates to a kind of control system at the cold station of central air-conditioning and control
Method processed.
Background technology
The cold station of central air-conditioning is typically made up of cold, refrigerating water pump, cooling pump, cooling tower, valve and control system etc., and which is led
It is used for providing air conditioning water for public building.Wherein, control system respectively with cold, refrigerating water pump, cooling pump, cooling tower and
The cold station equipment connection such as valve, for carrying out automated management and control to these cold station equipments, realizes the cold station of central air-conditioning
Automatization, to reduce man power and material's input, lifts the efficiency level of central air conditioner system.
As shown in figure 1, Fig. 1 is a kind of connection diagram of the cold station control system of central air-conditioning disclosed in prior art, should
Control system includes：Multiple DDC (Direct Digital Control, direct digital control) controllers and with each DDC control
The host computer of device communication connection.Wherein, DDC controllers are used for controlling all of cold station equipment.Specifically, DDC controllers pass through
Substantial amounts of I/O interface is connected with multiple cold station equipments, is such as connected with cold, cooling pump, cooling tower and electric control valve, for inciting somebody to action
The state feedback information of the measured value of the sensor at each cold station equipment and each cold station equipment is sent to host computer, by host computer
The information unification optimization of all DDC controllers is calculated, coordinates control, and the control command of generation is sent to each DDC control
Device processed and each cold station equipment.
But, during actual development, due to each not phase of the cold station water system form of each central air-conditioning, number of devices
With, for example, in a water system, refrigerating water pump, cooling pump, cold first respectively in parallel in groups after, cold group again with freezing pump group, cold
But pump group is connected in series, and in another water system, after cold, refrigerating water pump and cooling pump are first connected, different cold are connected in parallel again,
Accordingly, it would be desirable to be directed to each water system form be developed to control system again, that is, redesign DDC controls in control system
The number and annexation of device.This development scheme cycle length, input manpower are more, are not suitable with the demand of large-scale development.
Content of the invention
In view of this, the invention provides the control system and control method at a kind of cold station of central air-conditioning, existing to solve
In technology, the cold station control system construction cycle length of central air-conditioning, input manpower are more, do not apply to the problem of large-scale development.
For achieving the above object, the present invention provides following technical scheme：
A kind of control system at the cold station of central air-conditioning, the cold station of the central air-conditioning include multiple cold station equipment groups, each institute
Stating cold station equipment group includes the cold station equipments of one or more parallel connections, the described cold station equipment of different described cold station equipment group
Type is different；
The control system includes multiple control modules, in each described control module and a cold station equipment group
One or more cold station equipment correspondingly connect, for controlling the operational factor of the cold station equipment；
The control module is additionally operable to the operation number of units of cold station equipment in the described cold station equipment group which controls and becomes
During change, the parameter requirements changing value of the cold station equipment group is sent to other control modules of corresponding connection, so as to described its
Its control module adjusts the operation platform of cold station equipment in the described cold station equipment group of its control according to the parameter requirements changing value
Number.
Preferably, the plurality of cold station equipment group includes cold group and the first freezing pump group；The plurality of control module bag
The the first freezing pump control module for including cold control module and being connected with the cold control module；
The cold control module is connected with the one or more cold in parallel in the cold group, described for controlling
The operational factor of cold；The first freezing pump control module and one or more in parallel the first of the described first freezing pump group
Refrigerating water pump connects, for controlling the operational factor of first refrigerating water pump；
When the operation number of units of the cold that the cold control module is additionally operable in the cold group changes, will
Chilled water parameter requirements changing value is sent to the described first freezing pump control module；
The first freezing pump control module is additionally operable to according to chilled water parameter requirements changing value adjustment described first
The operation number of units of refrigerating water pump.
Preferably, the plurality of cold station equipment group also includes cooling down pump group；The plurality of control module also include with described
The cooling pump control module of cold control module connection；
The cooling pump control module is connected with the one or more cooling pumps in parallel in the cooling pump group, for controlling
Make the operational factor of the cooling pump；
When the operation number of units of the cold that the cold control module is additionally operable in the cold group changes, will
Cooling water parameter changes in demand value is sent to the cooling pump control module；
The cooling pump control module is additionally operable to adjust the cooling pump according to the cooling water parameter changes in demand value
Operation number of units.
Preferably, the plurality of cold station equipment group also includes cooling down tower system；The plurality of control module also include with described
The cooling tower control module of cooling pump control module connection；
The cooling tower control module is connected with the one or more cooling towers in the cooling tower system, described for controlling
The operational factor of cooling tower；
The cooling pump control module is additionally operable to send cooling water parameter value to the cooling tower control module；
The cooling tower control module is additionally operable to the operation number of units for adjusting the cooling tower according to the cooling water parameter value.
Preferably, the cold station of the central air-conditioning also includes the first regulating valve for controlling freezing supply mains, the control system
Also include the freezing supply mains's control module being connected with the cold control module, the freezing supply mains control module with described
First regulating valve connects, for controlling the aperture of first regulating valve；
Freezing supply mains's control module be additionally operable to send chilled water parameter value to the cold control module and
The first freezing pump control module；
The cold control module is additionally operable to the operation number of units for adjusting the cold according to the chilled water parameter value；
The first freezing pump control module is additionally operable to adjust first refrigerating water pump according to the chilled water parameter value
Operation number of units and running frequency.
Preferably, the cold station of the central air-conditioning also includes the second regulating valve for controlling cooling supply mains, the control system
Also include the cooling supply mains's control module being connected with the cooling tower control module, the cooling supply mains control module and institute
The connection of the second regulating valve is stated, for controlling the aperture of second regulating valve；
Cooling supply mains's controller is additionally operable to send optimal cooling water parameter value to the cooling tower control module
And the cooling pump control module；
The cooling tower control module is additionally operable to the operation for adjusting the cooling tower according to the optimal cooling water parameter value
Number of units；
The cooling pump control module is additionally operable to the operation for adjusting the cooling pump according to the optimal cooling water parameter value
Number of units and running frequency.
Preferably, the cold station of the central air-conditioning also includes the second freezing pump group；The control system also includes cold with described
Freeze the second freezing pump control module of supply mains's control module connection；
Second refrigerating water pump one or more in parallel of the second freezing pump control module and the described second freezing pump group
Connection, for controlling the operational factor of second refrigerating water pump；
Freezing supply mains's control module is additionally operable to send chilled water parameter value to second refrigerating water pump and controls mould
Block；
The second freezing pump control module is additionally operable to adjust second refrigerating water pump according to the chilled water parameter value
Operation number of units.
Preferably, the control module includes one or more controllers, and each described controller is described cold with corresponding
The one or more cold station equipment connection of station equipment group.
A kind of control method at the cold station of central air-conditioning, the cold station of the central air-conditioning include multiple cold station equipment groups, each institute
Stating cold station equipment group includes the cold station equipments of one or more parallel connections, the described cold station equipment of different described cold station equipment group
Type is different, and the control system includes multiple control modules, each described control module and a cold station equipment group
Interior one or more cold station equipment correspondingly connects, and the control method includes：
When the operation number of units of the cold station equipment group changes, the control module being connected with the cold station equipment group will
The parameter requirements changing value of the cold station equipment group is sent to other control modules of corresponding connection, so as to other control moulds described
Tuber adjusts the operation number of units of cold station equipment in the described cold station equipment group of its control according to the parameter requirements changing value.
Preferably, the cold station of the central air-conditioning also includes the first regulating valve for controlling freezing supply mains, the control system
Also include freezing supply mains's control module, the control method also includes：
Freezing supply mains's control module sends chilled water parameter value to cold control module and the first refrigerating water pump
Control module, so that operation number of units of the cold control module according to chilled water parameter value adjustment cold, described first
Freezing pump control module adjusts the operation number of units and running frequency of the first refrigerating water pump according to the chilled water parameter value.
Preferably, the cold station of the central air-conditioning also includes the second regulating valve for controlling cooling supply mains, the control system
Also include cooling down supply mains's control module, the control method also includes：
Cooling supply mains's controller sends cooling water parameter value to the cold control module and cooling pump control
Molding block, so that the cold control module adjusts the operation number of units of the cold according to the cooling water parameter value, described cold
But pump control module adjusts the operation number of units and running frequency of cooling pump according to the cooling water parameter value.
Preferably, the cold station of the central air-conditioning also includes that the second freezing pump group, the control system also include the second freezing
Pump control module, the control method also include：
Freezing supply mains's control module sends chilled water parameter value to the described second freezing pump control module, so as to
The second freezing pump control module adjusts the operation number of units of the second refrigerating water pump according to the chilled water parameter value.
Compared with prior art, technical scheme provided by the present invention has advantages below：
The control system and control method at the cold station of central air-conditioning provided by the present invention, the cold station of central air-conditioning include multiple cold
Station equipment group, each cold station equipment group include one or more cold station equipments, the cold station equipment that different cold station equipment groups includes
Type different, control system includes multiple control modules, one in each control module and a cold station equipment group or
Multiple cold station equipments correspondingly connect, for controlling the operational factor of cold station equipment, due to a control module and a kind of cold station
Equipment is connected, and therefore, only need to connect each control module according to the annexation in water system between cold station equipment, so as to
Construction cycle and human input can be reduced；
Also, the control module is additionally operable to when the operation number of units of its cold station equipment group for controlling changes, will be cold
The parameter requirements changing value of station equipment group is sent to other control modules of corresponding connection, so that other control modules are according to parameter
Changes in demand value adjusts the operation number of units of its cold station equipment group for controlling, such that it is able to improve the operation energy at the cold station of central air-conditioning
Effect, reduces the energy consumption at the cold station of central air-conditioning.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can be with basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of structural representation of the cold station control system of existing central air-conditioning；
Fig. 2 is a kind of structural representation of water system provided in an embodiment of the present invention；
Fig. 3 is a kind of structural representation of the cold station control system of central air-conditioning provided in an embodiment of the present invention；
Fig. 4 is the structural representation of another kind of water system provided in an embodiment of the present invention；
Fig. 5 is the structural representation of the cold station control system of another kind of central air-conditioning provided in an embodiment of the present invention；
Fig. 6 is the structural representation of another kind of water system provided in an embodiment of the present invention；
Fig. 7 is the structural representation of the cold station control system of another kind of central air-conditioning provided in an embodiment of the present invention；
Fig. 8 is the structural representation of another kind of water system provided in an embodiment of the present invention；
Fig. 9 is the structural representation of the cold station control system of another kind of central air-conditioning provided in an embodiment of the present invention.
Specific embodiment
Accompanying drawing in below in conjunction with the embodiment of the present invention, to the embodiment of the present invention in technical scheme carry 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 embodiment.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
A kind of control system at the cold station of central air-conditioning is embodiments provided, the cold station of the central air-conditioning includes multiple cold
Station equipment group, each cold station equipment group include the cold station equipment of one or more parallel connections, and it is cold that different cold station equipment groups includes
The type of station equipment is different, and control system includes multiple control modules, in each control module and a cold station equipment group
One or more cold station equipments correspondingly connect, for controlling the operational factor of the cold station equipment.
Also, the control module is additionally operable to when the operation number of units of its cold station equipment group for controlling changes, will
The parameter requirements changing value of cold station equipment group is sent to other control modules of corresponding connection, so that other control modules are according to ginseng
Number changes in demand value adjusts the operation number of units of its cold station equipment group for controlling.
As a control module is only connected with a kind of cold station equipment, therefore, need to according to cold station equipment in water system it
Between annexation connect each control module, such that it is able to reduce construction cycle and human input.Also, it is cold at one
When the operation number of units of station equipment group changes, the parameter requirements of cold station equipment group are become by the control module for controlling the cold station equipment
Change value is sent to other control modules of corresponding connection, is controlled so that other control modules adjust which according to parameter requirements changing value
A cold station equipment group operation number of units, such that it is able to improve the operational energy efficiency at the cold station of central air-conditioning, reduce central air-conditioning cold
The energy consumption that stands.
In one embodiment of the invention, as shown in Fig. 2 multiple cold station equipment groups include cold group and the first refrigerating water pump
Group, wherein, the cold group includes the cold 1 of parallel connection to cold 4, the first freezing pump group include the first refrigerating water pump 1 of parallel connection to
First refrigerating water pump 4.As shown in figure 3, the multiple control modules in the present embodiment include cold control module and control mould with cold
First freezing pump control module of block connection.Wherein, cold control module and the cold one or more in parallel in cold group
Connection, such as cold control module is connected to cold 4 respectively with cold 1, for controlling the operational factor of each cold；First freezing
Pump control module is connected with one or more first refrigerating water pumps in parallel of the first freezing pump group, such as the first freezing pump control module
It is connected with 1 to the first refrigerating water pump 4 of the first refrigerating water pump respectively, for controlling the operational factor of each the first refrigerating water pump.Wherein, cold
Control module control cold operational factor includes the unlatching and stopping for controlling cold, and the first freezing pump control module control first is cold
The operational factor for freezing pump includes the unlatching and stopping for controlling the first refrigerating water pump.
Further, when the operation number of units of the cold that cold control module is used in cold group changes, will freezing
Water parameter requirements changing value is sent to the first freezing pump control module；First freezing pump control module is additionally operable to be joined according to chilled water
Number changes in demand value adjustment first freezes the operation number of units and/or running frequency of pump group.Optionally, chilled water parameter requirements change
Value includes chilled-water flow changes in demand value.
Specifically, when the operation number of units of the cold in cold group is increased or decreased, cold control module is by chilled water flow
Amount changes in demand value is sent to the first freezing pump control module；First freezing pump control module is according to chilled-water flow changes in demand
Value adjustment first freezes the operation number of units and/or running frequency of pump group, for example, increases or decreases the operation platform of the first freezing pump group
Number, in the case of meeting the demand volume of chilled water with the actual flow in chilled water, improves the operation energy at the cold station of central air-conditioning
Effect, reduces the energy consumption at the cold station of central air-conditioning.
It should be noted that the control module in the present embodiment not only can be set with the cold station in corresponding cold station equipment group
Standby connected, can be connected with the auxiliary device with the cold station equipment, the auxiliary device includes sensor and electrically operated valve etc..It is based on
This, when the operation number of units of the cold in cold group is increased or decreased, cold control module can be obtained according to the data of sensor
Obtain chilled-water flow changes in demand value etc..
As shown in Fig. 2 the multiple cold station equipment group in the present embodiment also includes cooling down pump group, the cooling pump group includes parallel connection
Cooling pump 1 to cooling pump 4.As shown in figure 3, the multiple control modules in the present embodiment also include being connected with cold control module
Cooling pump control module.The cooling pump control module is connected with the one or more cooling pumps in parallel in cooling pump group, example
Such as, cooling pump control module is respectively connected with to cooling pump 4 with cooling pump 1, for controlling the operational factor of each cooling pump.Its
In, the operational factor for cooling down pump control module control cooling pump includes the unlatching and stopping for controlling cooling pump.
Further, when the operation number of units of the cold that cold control module is additionally operable in cold group changes, will be cold
But water parameter requirements changing value is sent to cooling pump control module；Cooling pump control module is additionally operable to according to cooling water parameter demand
The operation number of units and/or running frequency of changing value adjustment cooling pump group.Optionally, cooling water parameter changes in demand value includes cooling down
Discharge needs changing value.Equally, cold control module can obtain cooling water flow need according to the data of the sensor of cold
Seek changing value etc..
Specifically, when the operation number of units of the cold in cold group is increased or decreased, cold control module will cool down current
Amount changes in demand value is sent to cooling pump control module；Cooling pump control module adjusts cold according to cooling water flow changes in demand value
But the operation number of units and/or running frequency of pump group, for example, increases or decreases the operation number of units of cooling pump group, with cooling water
The operational energy efficiency at the cold station of central air-conditioning in the case that actual flow meets the demand volume of cooling water, is improved, reduces central air-conditioning
The energy consumption at cold station.
As shown in Fig. 2 the multiple cold station equipment group in the present embodiment also includes cooling down tower system, the cooling tower system includes parallel connection
Cooling tower 1 to cooling tower 4.As shown in figure 3, the multiple control modules in the present embodiment also include connecting with cooling pump control module
The cooling tower control module for connecing, the cooling tower control module are connected with the one or more cooling towers in cooling tower system, for example, cold
But tower control module is connected to cooling tower 4 respectively with cooling tower 1, for controlling the operational factor of each cooling tower.Wherein, cool down
The operational factor of tower control module control cooling tower includes the unlatching and stopping for controlling cooling tower, with by controlling opening for cooling tower
Open or stop, controlling the operation number of units for cooling down tower system.
Further, cooling pump control module is additionally operable to send cooling water parameter value to cooling tower control module；Cooling
Tower control module is additionally operable to the operation number of units and/or running frequency for adjusting cooling tower according to cooling water parameter value.Optionally, cool down
Water parameter value includes cooling water flow value.Equally, cooling pump control module can be obtained according to the sensor being connected with cooling pump
Cooling water flow value.
Specifically, when cooling pump control module adjusts the operation number of units of cooling pump group according to cooling water flow changes in demand value
Afterwards, cooling water flow value can change, and now, cooling pump control module can send cooling water flow value to cooling tower control
Module, cooling tower control module can adjust the operation number of units of cooling tower according to cooling water parameter value, with the reality in cooling water
The operational energy efficiency at the cold station of central air-conditioning in the case that flow meets the demand volume of cooling water, is improved, reduces the cold station of central air-conditioning
Energy consumption.
As shown in Fig. 2 cold station of central air-conditioning in the present embodiment also includes the first regulating valve for controlling freezing supply mains, should
First regulating valve is arranged on freezing supply mains, freezes the discharge in supply mains by adjusting the aperture regulation of itself.Such as Fig. 3
Shown, the control system in the present embodiment also includes the freezing supply mains's control module being connected with cold control module, the freezing
Supply mains's control module is connected with the first regulating valve, for controlling the aperture of the first regulating valve.
Further, freezing supply mains's control module is additionally operable to send the chilled water parameter value of freezing supply mains to cold
Control module and the first freezing pump control module；The cold control module is additionally operable to adjust cold group according to chilled water parameter value
Operation number of units；First freezing pump control module is additionally operable to adjust its first freezing pump group for controlling according to chilled water parameter value
Operation number of units and/or running frequency.Optionally, the chilled water parameter value includes the measured value or predictive value of refrigerating capacity, chilled water
For return main's pressure reduction or the temperature difference.
For chilled water system, after cold operation number of units change, cold control module can be the first refrigerating water pump control
Molding block proposes chilled water parameter requirements value, and this is the flow minimum set for ensureing cold operation；More than meeting most
On the premise of little value, freezing supply mains's control module can measure refrigerating capacity or carry out load prediction, be the control of the first refrigerating water pump
Module provides the optimal value of chilled-water flow.
Specifically, freezing supply mains's control module is connected with the sensor at freezing supply mains, for measuring chilled water confession
Return main's pressure reduction, and the aperture of the first regulating valve is controlled according to parameter value such as pressure reduction.Freezing supply mains's control module is additionally operable to
Measurement or the refrigerating capacity of prediction freezing supply mains, and the measured value or predictive value of refrigerating capacity are transmitted to cold control module and
First freezing pump control module, so that cold control module adjusts the operation number of units of cold, the first freezing pump control module is adjusted
The operation number of units of the first refrigerating water pump.Freezing supply mains's control module is additionally operable to measure chilled water for return main's pressure reduction or the temperature difference,
And chilled water is sent to the first freezing pump control module for return main's pressure reduction or the temperature difference, so as to the first freezing pump control module
Adjust the operation number of units of the first refrigerating water pump.
Additionally, cold station of central air-conditioning in the present embodiment also includes that (Fig. 2 does not show the second regulating valve for controlling cooling supply mains
Go out), second regulating valve is arranged on cooling supply mains, cools down the current in supply mains by adjusting the aperture regulation of itself
Amount.As shown in figure 3, the control system in the present embodiment also includes the cooling supply mains control mould being connected with cooling tower control module
Block, cooling supply mains control module are connected with the second regulating valve, for controlling the aperture of the second regulating valve.
Further, cooling supply mains's controller is additionally operable to send the optimal cooling water parameter value of cooling supply mains to cold
But tower control module and cooling pump control module；Cooling tower control module is additionally operable to adjust which according to optimal cooling water parameter value
The operation number of units and/or running frequency of the cooling tower system of control；Cooling pump control module is additionally operable to according to optimal cooling water parameter
Value adjusts the operation number of units and/or running frequency of its cooling pump group for controlling.Optionally, optimal cooling water parameter value includes most preferably
Cooling water inflow and optimal cooling water supply and return water riser.
Equally, for cooling water system, after the operation number of units change of cold, cold control module can be cooling pump
Control module proposes cooling water parameter requirements, and this is the flow minimum set for ensureing cold operation；More than satisfaction
On the premise of minima, cooling supply mains's control module can set up data base, the different cooling water flows of record or at a temperature of
System total energy consumption, and constantly seek optimum cooling water flow or supply and return water riser from data base, it is cooling pump control module
Propose the optimal value of chilled-water flow.
Specifically, cooling supply mains's controller is connected by the sensor attached with cooling supply mains, measures cooling tower
Outlet temperature, and the aperture of the second regulating valve is controlled according to outlet temperature, to protect handpiece Water Chilling Units cooling water inlet temperature to be higher than
The upper limit.Additionally, cooling supply mains's controller is additionally operable to send optimal cooling water inflow or cooling water supply and return water riser
To cooling pump control module, so that cooling pump control module adjusts the operation number of units of cooling pump.
When cooling water inflow improve (or cooling water supply and return water riser is low) when, cold power reduce, and cooling pump with cold
But tower power is improved；When cooling water inflow reduces (or cooling water supply and return water riser is high), cold power is improved, and cooling pump
Reduce with cooling tower power, accordingly, there exist the cooling water inflow or cooling water supply and return water riser of optimum so that cold, cooling
The general power of pump and cooling tower is minimum.Based on this, cooling supply mains controller is recordable at different conditions (for example：Different chamber
Outer meteorologic parameter, cold are opened number of units, cooling tower and open number of units etc.), different cooling water inflows or cooling water supply and return water riser
Cold station can imitate (calculating can be imitated including at least cold group and its corresponding cooling pump group, cooling tower system in cold station), and going through
Optimizing in history data base, finds optimum cooling water inflow or cooling water supply and return water riser so that can imitate highest in cold station.
Additionally, for the centrifugal cold of frequency conversion, existing makes Energy Efficiency Ratio reach highest rate of load condensate, usually 50% to
80%.For the centrifugal cold of the multiple stage frequency conversion cold group for constituting in parallel, in the overall refrigerating effect demand for knowing outside offer
Under, cold control module can find optimal operation number of units according to performance curve so that every unit operation is close to optimal
Rate of load condensate under, to reduce the power consumption at the cold station of central air-conditioning.
For frequency conversion cooling pump or refrigerating water pump, existing makes pump efficiency reach highest discharge.For multiple stage becomes
For frequency water pump cooling pump group in parallel or freezing pump group, under given total (pumping) head and total flow demand, cooling pump controls mould
Block or freezing pump control module can find optimal operation number of units according to performance curve so that every water pump operation close to
Under optimal discharge, to reduce the power consumption at the cold station of central air-conditioning.
For cooling tower system, under given total flow demand, cooling tower control module should make each cooling tower exist
Higher than on the premise of cooling water flow lower limit, as far as possible many unlatching cooling tower number of units, with as far as possible using the heat exchange area of cooling tower.
In embodiments of the invention, control module can include one or more controllers, each controller with corresponding
The one or more cold station equipment connection of cold station equipment group.Certainly, the control system in the embodiment of the present invention can include one
Control the control module of same cold station equipment, it is also possible to including the control module of multiple same cold station equipments.
As shown in figure 4, each cold and a cooling pump, a cooling tower and a freezing series connection of pumps, such as cold 1 with
Cooling pump 1, cooling tower 1 and refrigerating water pump 1 are connected, and cold 2 is connected with cooling pump 2, cooling tower 2 and refrigerating water pump 2, between multiple cold
Parallel connection, such as cold 1 are in parallel to cold 4.Be based on this, as shown in figure 5, cold control module include a cold control module, one
Individual freezing supply mains's controller, four cooling pump control modules, four the first freezing pump control modules, four cooling towers control mould
Block and four cooling supply mains's controllers.
Wherein, cold control module is connected to cold 4 respectively with multiple cold such as cold 1, cools down pump control module 1 to 4
Connect one to one with cooling pump 1 to 4 respectively, and cool down pump control module 1 to 4 and be all connected with cold control module；Cooling tower
Control module 1 is connected one to one with cooling tower 1 to 4 respectively to cooling tower control module 4, and cooling tower control module 1 is to cold
But tower control module 4 is corresponded to cooling pump controller 4 with cooling pump controller 1 respectively and is connected；Cooling supply mains controller 1
It is connected with the cooling supply mains of cooling tower 1 to 4 to cooling supply mains controller 4 respectively, cooling supply mains's controller 1 is to cooling water
Total tube controller 4 is connected one to one to cooling tower control module 4 with cooling tower control module 1 respectively, additionally, the first refrigerating water pump
The freezing pump control module 4 of control module 1 to the first is connected with cold control module.
The cooling water inflow or cooling water that act as determining cooling supply mains due to cooling down supply mains's controller is flat for backwater
Equal temperature, therefore, its quantity is by the quantity for cooling down supply mains, that is, the quantity of cooling tower determines.When each cooling tower parallel connection
When becoming a cooling tower system, only one cooling supply mains (including for return pipe road), only with cooling supply mains's control
Device, as shown in Figure 3.When each cooling tower is mutually not attached to, when respectively having a cooling supply mains, then each cooling tower is cold using one
But supply mains's controller, as shown in Figure 5.
In another embodiment of the invention, can be according to the size of cold by cold and its corresponding refrigerating water pump, cooling pump
It is divided into two groups, for example：Cold 1～3 is High cooling power, cold 4～5 is little cold, operationally can be according to actual refrigeration duty demand
Size carries out the collocation of size cold.As shown in fig. 6, wherein, cold 1 to 5 is in parallel, and the first refrigerating water pump 1 to 3 is in parallel, and first is cold
Freeze pump 4 to 5 in parallel, cooling pump 1 to 3 is in parallel, cooling pump 4 to 5 is in parallel, cooling tower 1 to 5 is in parallel, also, cooling pump 1 to 3 this
Group and cold units connected in series, cooling pump 4 to 5 this group and cold units connected in series, the first refrigerating water pump 1 to 3 this group and cold units connected in series,
First refrigerating water pump 4 to 5 this group and cold units connected in series, cooling tower system are connected with cooling pump 1 to 5.
As shown in fig. 7, the first freezing pump control module 1 is connected with cold control module with the second freezing pump control module 2,
Cooling pump control module 1 is connected with cold control module with cooling pump control module 2, and cooling tower control module is controlled with cooling pump
Module 1 is connected with cooling pump control module 2, also, the first freezing pump control module 1 is connected with refrigerating water pump 1 to 3, the first freezing
Pump control module 2 is connected with refrigerating water pump 4 to 5, and cold control module is connected with cold 1 to 5, cools down pump control module 1 with cooling
Pump 1 to 3 is connected, and cooling pump control module 2 is connected with cooling pump 4 to 5, and cooling tower control module is connected with cooling tower 1 to 5.
In another embodiment of the invention, as shown in figure 8, the cold station of central air-conditioning also includes the second freezing pump group, this
Two freezing pump groups include the second refrigerating water pump 1 to 4, and wherein, the second refrigerating water pump 1 is in parallel with the second refrigerating water pump 2,3 He of the second refrigerating water pump
Second refrigerating water pump 4 is in parallel.As shown in figure 9, the control system also includes the second freezing being connected with freezing supply mains's control module
Pump control module, the second freezing pump control module are connected with one or more second refrigerating water pumps of the second freezing pump group, are used for
Control the operational factor of the second refrigerating water pump.Wherein, the second freezing pump control module 1 is cold with the second refrigerating water pump 1 and second in parallel
Freeze pump 2 to be connected, for controlling the operational factor of the second refrigerating water pump 1 and the second refrigerating water pump 2；Second freezing pump control module 2 with simultaneously
Second refrigerating water pump 3 of connection is connected with the second refrigerating water pump 4, for controlling the operational factor of the second refrigerating water pump 3 and the second refrigerating water pump 4.
Further, freezing supply mains's control module is additionally operable to send the chilled water parameter value of freezing supply mains to second
Freezing pump control module；Second freezing pump control module is additionally operable to the operation for freezing pump group according to chilled water parameter value adjustment second
Number of units.Optionally, the chilled water parameter includes end supply backwater pressure difference signal.For including the first freezing pump group and the second freezing
For the water system of pump group, the second freezing pump control module is connected with freezing supply mains's controller.By freezing supply mains's control
Device measures each branch road least favorable end supply backwater pressure difference signal, and the end supply backwater pressure difference signal is sent to the second refrigerating water pump
Control module, used as the second freezing pump control module regulating platform number and the foundation of frequency.
Additionally, in this embodiment, as shown in figure 8, cooling pump group includes the cooling pump 1 of parallel connection to cooling pump 4, one cold
Machine and first refrigerating water pump are connected into a group, and multiple cold are in parallel afterwards, and cooling tower 1 is in parallel to cooling tower 4.Such as Fig. 9 institutes
Show, one first freezing pump control module is connected with first refrigerating water pump, and four first freeze pump control modules and cold control
Molding block connects, and the cold control module is also connected with cooling pump control module and freezing supply mains's controller, the cooling pump control
Molding block is also connected with cooling tower control module, and the cooling tower control module is also connected with cooling supply mains's controller.
It should be noted that the connection described in the embodiment of the present invention between control module and control module can be physics
Connection, or communication connection, the present invention is not limited to this.
The control system at the cold station of central air-conditioning that the embodiment of the present invention is provided, the cold station of central air-conditioning include that multiple cold stations set
Standby group, each cold station equipment group include one or more cold station equipments, the class of the cold station equipment that different cold station equipment groups includes
Type is different, and control system includes multiple control modules, one or more in each control module and a cold station equipment group
Cold station equipment correspondingly connects, for controlling the operational factor of cold station equipment, due to a control module and a kind of cold station equipment
It is connected, therefore, only each control module need to be connected according to the annexation in water system between cold station equipment, such that it is able to
Reduce construction cycle and human input；
Also, the control module is additionally operable to when the operation number of units of its cold station equipment group for controlling changes,
The parameter requirements changing value of cold station equipment group is sent to other control modules of corresponding connection, so as to other control modules according to
Parameter requirements changing value adjusts the operation number of units of its cold station equipment group for controlling, such that it is able to optimize the cold station of central air-conditioning
Operational energy efficiency, reduces the energy consumption at the cold station of central air-conditioning.
The embodiment of the present invention additionally provides a kind of control method at the cold station of central air-conditioning, and the central air-conditioning is cold to stand including many
Individual cold station equipment group, each described cold station equipment group include the cold station equipment of one or more parallel connections, and different described cold stations set
The type of the described cold station equipment that standby group includes is different, and the control system includes multiple control modules, each described control
One or more cold station equipment in module cold station equipment group described with is corresponding to be connected, and the control method includes：
When the operation number of units of the cold station equipment group changes, the control module being connected with the cold station equipment group will
The parameter requirements changing value of the cold station equipment group is sent to other control modules of corresponding connection, so as to other control moulds described
Tuber adjusts the operation number of units of cold station equipment in the described cold station equipment group of its control according to the parameter requirements changing value.
Specifically, when multiple cold station equipment groups include that cold group and the first freezing pump group, multiple control modules include cold
Control module and the first freezing pump control module being connected with cold control module, and the operation number of units of the cold in the cold group
When changing, cold control module sends chilled water parameter requirements changing value to the first freezing pump control module, so that the
One freezing pump control module freezes the operation number of units of pump group according to chilled water parameter requirements changing value adjustment first.
When multiple cold station equipment groups also include cooling down pump group, multiple control modules also include being connected with cold control module
Cooling pump control module, and the operation number of units of the cold in the cold group, when changing, cooling water is joined by cold control module
Number changes in demand value is sent to cooling pump control module, so that cooling pump control module is adjusted according to cooling water parameter changes in demand value
The operation number of units of whole cooling pump group.
When multiple cold station equipment groups also include cooling down tower system, multiple control modules also include being connected with cooling pump control module
Cooling tower control module when, cooling pump control module cooling water parameter value is sent to cooling tower control module, to cool down
Tower control module adjusts the operation number of units of cooling tower according to cooling water parameter value.
Further, the cold station of the central air-conditioning also includes the first regulating valve for controlling freezing supply mains, the control system
System also includes that the freezing supply mains's control module being connected with the cold control module, the control method are also included：
Freezing supply mains's control module sends chilled water parameter value to the cold control module and described the
One freezing pump control module, so that the cold control module adjusts its cold for controlling according to the chilled water parameter value
Operation number of units, described first freezing pump control module according to the chilled water parameter value adjusts its control described first freezing
The operation number of units of pump and running frequency.
Further, the cold station of the central air-conditioning also includes the second regulating valve for controlling cooling supply mains, the control system
System also includes that the cooling supply mains's control module being connected with the cooling tower control module, the control method are also included：
Cooling supply mains's controller sends cooling water parameter value to the cold control module and the cooling
Pump control module, so that the cold control module adjusts the operation of its cold for controlling according to the cooling water parameter value
Number of units, the cooling pump control module according to the cooling water parameter value adjust its control the cooling pump operation number of units and
Running frequency.
Further, the cold station of the central air-conditioning also includes the second freezing pump group, the control system also include with described
Second freezing pump control module of freezing supply mains control module connection, the control method also include：
Freezing supply mains's control module sends chilled water parameter value to the described second freezing pump control module, so as to
The second freezing pump control module adjusts the operation number of units of second refrigerating water pump according to the chilled water parameter value.
The control method at the cold station of central air-conditioning that the embodiment of the present invention is provided, the cold station of central air-conditioning include that multiple cold stations set
Standby group, each cold station equipment group include one or more cold station equipments, the class of the cold station equipment that different cold station equipment groups includes
Type is different, and control system includes multiple control modules, one or more in each control module and a cold station equipment group
Cold station equipment correspondingly connects, for controlling the operational factor of cold station equipment, due to a control module and a kind of cold station equipment
It is connected, therefore, only each control module need to be connected according to the annexation in water system between cold station equipment, such that it is able to
Reduce construction cycle and human input；
Also, the control module is additionally operable to when the operation number of units of its cold station equipment group for controlling changes,
The parameter requirements changing value of cold station equipment group is sent to other control modules of corresponding connection, so as to other control modules according to
Parameter requirements changing value adjusts the operation number of units of its cold station equipment group for controlling, such that it is able to optimize the cold station of central air-conditioning
Operational energy efficiency, reduces the energy consumption at the cold station of central air-conditioning.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
For, as which corresponds to the method disclosed in Example, so description is fairly simple, related part is said referring to method part
Bright.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
Multiple modifications of these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
Claims (12)
1. the control system at the cold station of a kind of central air-conditioning, it is characterised in that the cold station of the central air-conditioning includes multiple cold station equipments
Group, each described cold station equipment group include the cold station equipments of one or more parallel connections, different described cold station equipment group described
The type of cold station equipment is different；
The control system includes multiple control modules, in each described control module and a cold station equipment group
Individual or multiple cold station equipments correspondingly connect, for controlling the operational factor of the cold station equipment；
When the control module is additionally operable to the operation number of units of cold station equipment in the described cold station equipment group which controls and changes,
The parameter requirements changing value of the cold station equipment group is sent to other control modules of corresponding connection, so as to other controls described
Module adjusts the operation number of units of cold station equipment in the described cold station equipment group of its control according to the parameter requirements changing value.
2. control system according to claim 1, it is characterised in that the plurality of cold station equipment group includes cold group and
One freezing pump group；The first freezing that the plurality of control module is included cold control module and is connected with the cold control module
Pump control module；
The cold control module is connected with the one or more cold in parallel in the cold group, for controlling the cold
Operational factor；The first freezing pump control module is freezed with one or more in parallel first of the described first freezing pump group
Pump connects, for controlling the operational factor of first refrigerating water pump；
When the operation number of units of the cold that the cold control module is additionally operable in the cold group changes, will freezing
Water parameter requirements changing value is sent to the described first freezing pump control module；
The first freezing pump control module is additionally operable to according to chilled water parameter requirements changing value adjustment first freezing
The operation number of units of pump.
3. control system according to claim 2, it is characterised in that the plurality of cold station equipment group also includes cooling pump
Group；The plurality of control module also includes the cooling pump control module being connected with the cold control module；
The cooling pump control module is connected with the one or more cooling pumps in parallel in the cooling pump group, for controlling
State the operational factor of cooling pump；
When the operation number of units of the cold that the cold control module is additionally operable in the cold group changes, will cooling
Water parameter requirements changing value is sent to the cooling pump control module；
The cooling pump control module is additionally operable to the operation for adjusting the cooling pump according to the cooling water parameter changes in demand value
Number of units.
4. control system according to claim 3, it is characterised in that the plurality of cold station equipment group also includes cooling tower
Group；The plurality of control module also includes the cooling tower control module being connected with the cooling pump control module；
The cooling tower control module is connected with the one or more cooling towers in the cooling tower system, for controlling the cooling
The operational factor of tower；
The cooling pump control module is additionally operable to send cooling water parameter value to the cooling tower control module；
The cooling tower control module is additionally operable to the operation number of units for adjusting the cooling tower according to the cooling water parameter value.
5. control system according to claim 4, it is characterised in that the cold station of the central air-conditioning also includes controlling chilled water
First regulating valve of house steward, the control system also include the freezing supply mains control mould being connected with the cold control module
Block, the freezing supply mains control module are connected with first regulating valve, for controlling the aperture of first regulating valve；
Freezing supply mains's control module is additionally operable to send chilled water parameter value to the cold control module and described
First freezing pump control module；
The cold control module is additionally operable to the operation number of units for adjusting the cold according to the chilled water parameter value；
The first freezing pump control module is additionally operable to the operation for adjusting first refrigerating water pump according to the chilled water parameter value
Number of units and running frequency.
6. control system according to claim 5, it is characterised in that the cold station of the central air-conditioning also includes controlling cooling water
Second regulating valve of house steward, the control system also include the cooling supply mains control mould being connected with the cooling tower control module
Block, the cooling supply mains control module are connected with second regulating valve, for controlling the aperture of second regulating valve；
Cooling supply mains's controller be additionally operable to send optimal cooling water parameter value to the cooling tower control module and
The cooling pump control module；
The cooling tower control module is additionally operable to the operation number of units for adjusting the cooling tower according to the optimal cooling water parameter value；
The cooling pump control module is additionally operable to the operation number of units for adjusting the cooling pump according to the optimal cooling water parameter value
And running frequency.
7. control system according to claim 6, it is characterised in that the cold station of the central air-conditioning also includes the second refrigerating water pump
Group；The control system also includes the second freezing pump control module being connected with freezing supply mains's control module；
The second freezing pump control module is connected with one or more second refrigerating water pumps in parallel of the described second freezing pump group,
For controlling the operational factor of second refrigerating water pump；
Freezing supply mains's control module is additionally operable to send chilled water parameter value to the described second freezing pump control module；
The second freezing pump control module is additionally operable to the operation for adjusting second refrigerating water pump according to the chilled water parameter value
Number of units.
8. the control system according to any one of claim 1 to 7, it is characterised in that the control module include one or
Multiple controllers, each described controller are connected with the one or more cold station equipment of the corresponding cold station equipment group.
9. the control method at the cold station of a kind of central air-conditioning, it is characterised in that the cold station of the central air-conditioning includes multiple cold station equipments
Group, each described cold station equipment group include the cold station equipments of one or more parallel connections, different described cold station equipment group described
The type of cold station equipment is different, and the control system includes multiple control modules, each described control module with described in one
One or more cold station equipment in cold station equipment group correspondingly connects, and the control method includes：
When the operation number of units of the cold station equipment group changes, the control module being connected with the cold station equipment group will be described
The parameter requirements changing value of cold station equipment group is sent to other control modules of corresponding connection, so as to other control module roots described
According to the operation number of units that the parameter requirements changing value adjusts cold station equipment in the described cold station equipment group of its control.
10. control method according to claim 9, it is characterised in that the cold station of the central air-conditioning also includes control freezing
First regulating valve of supply mains, the control system also include freezing supply mains's control module, and the control method also includes：
Freezing supply mains's control module sends chilled water parameter value to cold control module and the first refrigerating water pump and controls
Module, so that the cold control module adjusts the operation number of units of cold, first freezing according to the chilled water parameter value
Pump control module adjusts the operation number of units and running frequency of the first refrigerating water pump according to the chilled water parameter value.
11. control methods according to claim 10, it is characterised in that the cold station of the central air-conditioning also includes control cooling
Second regulating valve of supply mains, the control system also include cooling down supply mains's control module, and the control method also includes：
Cooling supply mains's controller sends cooling water parameter value to the cold control module and cooling pump control mould
Block, so that the cold control module adjusts the operation number of units of the cold, the cooling pump according to the cooling water parameter value
Control module adjusts the operation number of units and running frequency of cooling pump according to the cooling water parameter value.
12. control methods according to claim 11, it is characterised in that the cold station of the central air-conditioning also includes the second freezing
Pump group, the control system also include that the second freezing pump control module, the control method also include：
Freezing supply mains's control module sends chilled water parameter value to the described second freezing pump control module, so as to described
Second freezing pump control module adjusts the operation number of units of the second refrigerating water pump according to the chilled water parameter value.
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| CN114440419B (en) * | 2021-12-31 | 2023-10-27 | 博锐尚格科技股份有限公司 | Control method, device, equipment and storage medium of cold station secondary pump system |
| CN115451550A (en) * | 2022-09-22 | 2022-12-09 | 无锡锐泰节能系统科学有限公司 | Total energy consumption baseline optimization algorithm of central air-conditioning system based on optimal balance of supply and demand |
| CN115451550B (en) * | 2022-09-22 | 2023-10-27 | 无锡锐泰节能系统科学有限公司 | Central air conditioning system total energy consumption base line optimizing algorithm based on optimal supply and demand balance |
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