CN106440111A - Central air-conditioning cooling station system and water system topological graph establishment method - Google Patents
Central air-conditioning cooling station system and water system topological graph establishment method Download PDFInfo
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- CN106440111A CN106440111A CN201610861920.1A CN201610861920A CN106440111A CN 106440111 A CN106440111 A CN 106440111A CN 201610861920 A CN201610861920 A CN 201610861920A CN 106440111 A CN106440111 A CN 106440111A
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- cold station
- station equipment
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- cold
- pump
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
-
- 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
- F24F11/62—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
-
- 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
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the invention discloses a central air-conditioning cooling station system and a water system topological graph establishment method. The system comprises CAN buses and at least two cooling station device groups. Each cooling station device group comprises at least one cooling station device module. Each cooling station device module comprises a virtual interface. The CAN buses are connected with the cooling station device modules, so that the cooling station device modules conduct data transmission through the CAN buses. Each cooling station device module comprises a cooling station device and a device controller, wherein the device controller is connected with the cooling station device and used for acquiring operation information of the connected cooling station device and controlling the cooling station device according to the set virtual interface connecting relation and operation information of other cooling station devices. According to the technical scheme of the embodiment, each cooling station device is equipped with one device controller, and the device controllers control the cooling station devices in a CAN bus communication mode, so that the field wiring workload is reduced by more than 50%, and the central air-conditioning cooling station system is simple and convenient to wire on site, high in efficiency and low in error rate.
Description
Technical field
The present embodiments relate to technical field of central air, more particularly, to a kind of central air-conditioning cold station system and water system
The construction method of topological diagram.
Background technology
Central air-conditioning is cold to stand provides air conditioning water for public building, typically by cold, refrigerating water pump, cooling pump, cooling tower,
Valve, automatic control system etc. form.Central air-conditioning cold station automatic control system can achieve and automatically manages and control, and is greatly improved
Cold station automatic level, reduces management manpower and materials and puts into, lift central air conditioner system efficiency level.
Conventional central air-conditioning plant automatic control system is provided by single team control producer, that is,:In Practical Project, cold station
Equipment is such as:Cold, refrigerating water pump, cooling pump, cooling tower, electrically operated valve etc., are provided by equipment supplier, and automatic control system is by group
Control producer provides.Conventional central air-conditioning plant automatic control system mainly has following characteristics:
1) DDC controller is by a large amount of I/O interface and field apparatus such as cold, pump, blower fan of cooling tower, electric control valve, water
Temperature sensor, flow sensor, differential pressure pickup etc. are connected, collecting sensor measured value and executing agency's state feedback information,
Control instruction output is handed down to each executing agency.
2) on stream, because the system form of each project, number of devices, demand for control are different, need
The control program of each project is developed again.
3) need the work carrying out a large amount of field connections and networking configuration.In order to by the connection of automatic control system topology with
The physical connection topology matching of real system, needs to carry out networking configuration work to control system.Networking configuration refers to sense
The physical message point of the physical devices such as device, actuator reflects in automatic control system, corresponding with the variable in control system,
Physical connection including information point and software set.Cold station control system information point quantity is various, leads to artificial networking configuration work
Work amount is huge, needs to complete at the scene to configure by professional engineer.
Because conventional central air-conditioning plant automatic control system is centralized and independent of field apparatus, need very professional
Personnel carry out order form exploitation, this process control block (PCB) construction cycle is long, and field connection and networking configuration work amount are big, limits
The large-scale development of central air-conditioning cold station automatic control system and popularization and application.
Content of the invention
Embodiments provide the construction method of a kind of central air-conditioning cold station system and water system topological diagram, to solve
Conventional central air-conditioning plant system order form is developed, and development amount is big, and construction cycle length and field connection and networking configuration
The big problem of workload.
In a first aspect, embodiments providing a kind of central air-conditioning cold station system, including:
CAN and at least two cold station equipment groups, described cold station equipment group includes at least one cold station equipment module, institute
State cold station equipment module and include virtual interface;
Described CAN is connected with described cold station equipment module, so that described cold station equipment module is real by CAN
Existing data transfer;
Described cold station equipment module, including:Cold station equipment and device controller, described device controller is set with described cold station
For connecting, for obtaining the operation information of the cold station equipment connecting and cold with other according to the virtual interface annexation setting
The operation information of station equipment is controlled to described cold station equipment.
Further, described cold station equipment includes cold, pump and cooling tower.
Further, described cold station equipment module includes at least 2 virtual interfaces.
Second aspect, the embodiment of the present invention additionally provides a kind of construction method of central air-conditioning cold station water system topological diagram,
Including:
Device controller reads the virtual interface docking table importing, and determines the annexation of cold station equipment;
According to described annexation, generate water system topological diagram according to preset rules.
Further, described according to preset rules generate water system topological diagram, including:
Determine the type of described cold station equipment;
The connection of the cold station equipment of same type is set as parallel connection, the connection of dissimilar cold station equipment is set as going here and there
Connection.
Further, described according to preset rules generate water system topological diagram also include:
When described cold station equipment is pump, determine the cold station equipment type being connected with described pump, according to described cold station equipment
Type determines the attribute of described pump, and the attribute of described pump includes:Cooling pump and refrigerating water pump.
Each cold station equipment configures a device controller, adopts the communication mode of CAN to cold between device controller
Station equipment is controlled.The line configuration work of cold station equipment and device controller has completed before constructing at the scene, and scene is applied
Work only needs to be connected in CAN so that field connection construction working decreases more than 50% by cold station equipment module, simultaneously
Field connection is simple and convenient, efficiency high, and error rate is low.Device controller obtains the operation information of the corresponding cold station equipment connecting,
And according to the operation information of the virtual interface annexation setting and other cold station equipments, described cold station equipment is controlled, generation
Pass through the centerized fusion of central controller for conventional central air-conditioning it is achieved that the intellectuality of cold station equipment and distributing control.
The control program of the cold station control system of central air-conditioning is applied to different working environments, need not carry out secondary for different orders
Exploitation, enormously simplify the development of central air-conditioning cold station system.
Brief description
By reading the detailed description that non-limiting example is made made with reference to the following drawings, other of the present invention
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the central air-conditioning cold station system structure diagram that the embodiment of the present invention one provides;
Fig. 2 a is that in the construction method of central air-conditioning cold station water system topological diagram that the embodiment of the present invention two provides, cold station sets
Standby virtual interface connection diagram;
Fig. 2 b is that in the construction method of central air-conditioning cold station water system topological diagram that the embodiment of the present invention two provides, cold station sets
Standby system topology schematic.
The technical characteristic that the reference of in figure refers to respectively is:
100th, CAN;200th, cold station equipment group;210th, cold station equipment module;
211st, device controller;212nd, cold station equipment.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure is illustrate only in description, accompanying drawing.
Embodiment one
The central air-conditioning cold station system structure diagram that Fig. 1 provides for the present embodiment.Referring to Fig. 1, the central authorities of the present embodiment
Air-conditioning plant system includes:CAN 100 and at least two cold station equipment groups 200, described cold station equipment group 200 is included at least
One cold station equipment module 210, described cold station equipment module includes virtual interface;Wherein,
Described CAN 100 is connected with described cold station equipment module 210, so that described cold station equipment module 210 is passed through
CAN 100 realizes data transfer;
Described cold station equipment module 210, including:Cold station equipment 212 and device controller 211, described device controller 211
It is connected with described cold station equipment 212, for obtaining the operation information of the cold station equipment 212 connecting, and connect according to the virtual of setting
Mouth annexation and the operation information of other cold station equipments 212, are controlled to described cold station equipment 212.
The cold station control system of central air-conditioning in the present embodiment, using the communication mode of CAN.Section in CAN
Point by the way of a kind of non-destructive, bit-by-bit arbitration, also referred to as " with the Carrier Sense Multiple Access of conflict avoidance " and " be based on
The access mode of message priority arbitration " accesses bus.CAN protocol is based on message (Message Based), rather than base
In address (Address Based), the node being connected with the bus not information similar to " address ", message is not based on ground
Location is transmitted between node and node." hot plug " of therefore supporting bus node, increases in bus or subtracts
During few node, in bus, the firmware of other nodes and application layer do not need to change.Based on the above feature of CAN, can be real
Now this control system is extensively applied, and maximizes the impact reducing to entirely cold station during cold station equipment fault.
Cold station equipment module is directly connected in CAN, transfers data to CAN by CAN transceiver or incites somebody to action
The data that CAN receives is transferred to CAN controller, and CAN controller is processed to data and is transferred to CAN transceiver, thus complete
Become the transmission of data.Cold station equipment module also at least includes 2 virtual interfaces, and described virtual interface is not in esse to be connect
Mouthful, but by setting the interface generating.Preferably, 4 virtual interfaces can be set for each cold station equipment module, to meet
Connection requirement between cold station equipment.Exemplary, virtual interface, equipment are set on the device controller in cold station equipment module
Controller can be integrated in cold station equipment, so the virtual interface of cold station equipment module is referred to as the virtual of cold station equipment connecing
Mouthful.Cold station equipment module includes cold station equipment (such as:Cold, refrigerating water pump, cooling pump, cooling tower, electrically operated valve etc.) and equipment control
Device processed.In each cold station equipment module, each cold station equipment is connected with each device controller, and both correspond, that is, often
Individual cold station equipment is all controlled by a corresponding device controller.Device controller includes IO with the connection of cold station equipment
The a series of activities such as wiring, configuration, exemplary, device controller can be configured in an integrated manner inside cold station equipment,
These work can complete before device controller dispatches from the factory, and so greatly reduces the cold station control system of central air-conditioning connecing at the scene
Line and configuration work amount.Device controller can for distinct device such as:Cold, pump, cooling tower, electric control valve etc. enter rower
Standardization designs, and formulates corresponding standard information collection, and described standard information collection maximizes the various information containing equipment operation.
Exemplary, the standard information collection of cold includes the chilled water inflow temperature of cold, chilled water leaving water temperature, cooling water enter water temperature
Degree, cooling water leaving water temperature, running frequency, guide vane opening, main frame electric current etc.;The standard information collection of pump includes the operation frequency of pump
Rate, pressure reduction, flow of pump etc. in front and back of pump.
Device controller obtains the operation information of the cold station equipment of corresponding connection.Described operation information can include cold
The setup parameter of station equipment and operational factor.Exemplary, the operation information of cold includes the chilled water inflow temperature of cold, cold
Freeze water leaving water temperature, cold in-water temperature, cooling water leaving water temperature, running frequency, guide vane opening, main frame electric current etc.;Pump
Operation information includes pressure reduction, flow of pump etc. in front and back of the running frequency of pump, pump.Wherein, according to different order needs, different
Running environment, the operation information of cold station equipment is different.Device controller obtains the cold station equipment of corresponding connection
Operation information after, described operation information is sent to other equipment controller by CAN, that is, each device controller is enough
Obtain the operation information of other cold station equipments, and the operation information according to other cold station equipments and connected cold station equipment
The virtual interface annexation of operation information and setting, the operation controlling connected cold station equipment is so that distinct device control
The work such as communication, computing, coordinated operation can be realized by standardization control program between device processed.Wherein, virtual interface connects
The virtual interface docking table that relation can be imported by user is set up, by the pairing of the virtual interface of each cold station equipment even
Connect it may be determined that in Practical Project cold station equipment topological relation.
Exemplary, described central air-conditioning cold station system includes three cold, three refrigerating water pumps, three cooling pumps and three
Cooling tower, the relation that the virtual interface that sets connects is connected in parallel as the cold station equipment of same type, respectively constitutes cold group, cold
Freeze pump group, cooling pump group, cooling tower group, be connected in series between different types of cold station equipment group.According to virtual interface annexation
Can determine the topological relation of central air-conditioning cold station system.The chilled water leaving water temperature setting cold during refrigeration as 7 DEG C, chilled water
Inflow temperature is 12 DEG C.The device controller being connected with cold controls cold to provide 7 DEG C of chilled water, logical by CAN
Letter mode, transmits the data to the device controller of other all of cold station equipments, receives other all cold station equipments simultaneously
Operation information.When the device controller being connected with cold detects that the chilled water inflow temperature that cold provides is higher than 12 DEG C,
The device controller being connected with cold, according to the operational factor of all cold station equipments, is calculated and is passed to result of calculation and be
Miscellaneous equipment controller in system.Device controller is consulted each other, until calculating convergence, to seek an optimum and energy
Meet the running status of workload demand.Finally, control refrigeration unit according to final running status execution action, for example, is then turned on one
Or multiple stage cold.
The central air-conditioning cold station system that the present embodiment provides, each cold station equipment configures a device controller,
Between device controller, the communication mode using CAN is controlled to cold station equipment.Cold station equipment and equipment control
The line configuration work of device processed has completed before constructing at the scene, and site operation only needs to for cold station equipment module to be connected to CAN
So that field connection construction working decreases more than 50% in bus, field connection is simple and convenient simultaneously, efficiency high, error rate
Low.Device controller obtains the operation information of the corresponding cold station equipment connecting, and according to the virtual interface annexation setting and
The operation information of other cold station equipments is controlled to described cold station equipment, replaces conventional central air-conditioning to pass through central controller
Centerized fusion is it is achieved that the intellectuality of cold station equipment and distributing control.The control program of the cold station control system of central air-conditioning
It is applied to different working environments, secondary development need not be carried out for different orders, enormously simplify central air-conditioning cold station system
The development of system.
Embodiment two
The present embodiment is on the basis of above-described embodiment, there is provided a kind of structure of central air-conditioning cold station water system topological diagram
Method, including:
Device controller reads the virtual interface docking table importing, and determines the annexation of cold station equipment;
According to described annexation, generate water system topological diagram according to preset rules.
Fig. 2 a is the void of cold station equipment in the construction method of central air-conditioning cold station water system topological diagram that the present embodiment provides
Intend interface connection diagram;Fig. 2 b is cold station in the construction method of central air-conditioning cold station water system topological diagram that the present embodiment provides
Device systems topology schematic diagram.
In Fig. 2 a and Fig. 2 b, C1, C2 and C3 correspond to No. 1 cold, No. 2 cold and No. 3 cold respectively, T1, T2, T3, T4,
T5 and T6 corresponds to No. 1 pump, No. 2 pumps, No. 3 pumps, No. 4 pumps, No. 5 pumps and No. 6 pumps respectively, and P1, P2 and P3 correspond to No. 1 cooling respectively
Tower, No. 2 cooling towers and No. 3 cooling towers.
User can make a virtual interface docking according to the physical connection topological relation of station equipment cold in Practical Project
Table.The cold station equipment importing in the construction method of the central air-conditioning cold station water system topological diagram that above table provides for the present embodiment
Virtual interface docks table.This virtual interface docking table can be used to indicate that in the system of central air-conditioning cold station, every cold station equipment
Virtual interface pair relationhip.Can be seen that C1-1 and C2-1 by above-mentioned virtual interface docking table to match, specifically represent No. 1 cold
Virtual interface 1 be connected with the virtual interface 1 of No. 2 cold, virtual interface dock table in other interfaces pairing all similar,
This is no longer going to repeat them.Device controller reads the virtual interface docking table importing, and the pair relationhip according to virtual interface,
Determine in the system of central air-conditioning cold station the annexation of the corresponding device controller of each cold station equipment.The central hollow that Fig. 2 a represents
The virtual interface connection diagram adjusting cold station equipment in the construction method of cold station water system topological diagram is according to above-mentioned virtual interface
The corresponding connection of virtual interface pair relationhip of docking table.
Preferably, described according to preset rules generate water system topological diagram, including:Determine the type of described cold station equipment;
The connection of the cold station equipment of same type is set as parallel connection, the connection of dissimilar cold station equipment is set as connecting.Example
Property, device controller is transferred to the standard data of bus according to cold station equipment, judges the type of cold station equipment, such as area
Divide the device type such as cold, pump, cooling tower.The connection of the cold station equipment of same type is set as parallel connection, will be dissimilar cold
The connection of station equipment is set as connecting.Exemplary, cold, cooling tower, after the parallel connection in groups of pump elder generation, cold group, cooling tower group and
Pump group is connected in series again, and Fig. 2 b illustrates for cold station equipment system topological in the construction method of central air-conditioning cold station water system topological diagram
Figure.
Preferably, described according to preset rules generate water system topological diagram also include:When described cold station equipment is pump, really
The fixed cold station equipment type being connected with described pump, determines the attribute of described pump, the genus of described pump according to described cold station equipment type
Property includes:Cooling pump and refrigerating water pump.Specifically, the pump connecting cooling tower is defined as cooling pump, the pump direct-connected with end-equipment
It is defined as secondary pump, the pump connecting main frame is defined as a pump.Wherein, a pump and secondary pump belong to refrigerating water pump, and one
Secondary pump is mainly responsible for overcoming the resistance of cold side, corresponds with cold group, and the design discharge of a pump is cold group evaporimeter
Metered flow, by rational Lectotype and calculation so that a pump operation is in optimal efficiency operating point;Secondary pump is mainly used to gram
Take the resistance of end-equipment, can be separately provided on different end loops, secondary pump can be according to this loop load variations
It is independently controlled and variable frequency adjustment.
The construction method of the central air-conditioning cold station water system topological diagram that the present embodiment provides, the void that can be imported according to user
Intend interface docking table, set up the topological diagram of central air-conditioning cold station water system.Make between cold station equipment without physical connection
Realize annexation and simplify operation, improve efficiency.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore although being carried out to the present invention by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other Equivalent embodiments more can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (6)
1. a kind of central air-conditioning cold station system is it is characterised in that described system includes:
CAN and at least two cold station equipment groups, described cold station equipment group includes at least one cold station equipment module, described cold
Station equipment module includes virtual interface;
Described CAN is connected with described cold station equipment module, so that described cold station equipment module realizes number by CAN
According to transmission;
Described cold station equipment module, including:Cold station equipment and device controller, described device controller is with described cold station equipment even
Connect, for obtaining the operation information of the cold station equipment connecting, and set according to the virtual interface annexation setting and other cold stations
Standby operation information is controlled to described cold station equipment.
2. system according to claim 1 is it is characterised in that described cold station equipment includes cold, pump and cooling tower.
3. system according to claim 1 is it is characterised in that described cold station equipment module includes at least 2 virtual interfaces.
4. a kind of construction method of central air-conditioning cold station water system topological diagram is it is characterised in that methods described includes:
Device controller reads the virtual interface docking table importing, and determines the annexation of cold station equipment;
According to described annexation, generate water system topological diagram according to preset rules.
5. method according to claim 4 is it is characterised in that described generate water system topological diagram, bag according to preset rules
Include:
Determine the type of described cold station equipment;
The connection of the cold station equipment of same type is set as parallel connection, the connection of dissimilar cold station equipment is set as connecting.
6. method according to claim 5 is it is characterised in that described also wrap according to preset rules generation water system topological diagram
Include:
When described cold station equipment is pump, determine the cold station equipment type being connected with described pump, according to described cold station equipment type
Determine the attribute of described pump, the attribute of described pump includes:Cooling pump and refrigerating water pump.
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