CN105546757A - Group control method and system for water chilling units - Google Patents
Group control method and system for water chilling units Download PDFInfo
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- CN105546757A CN105546757A CN201610013560.XA CN201610013560A CN105546757A CN 105546757 A CN105546757 A CN 105546757A CN 201610013560 A CN201610013560 A CN 201610013560A CN 105546757 A CN105546757 A CN 105546757A
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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
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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
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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
- F24F11/70—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
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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
- F24F11/63—Electronic processing
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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
- 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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- 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)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention provides a group control method and system for water chilling units. The group control method comprises the following steps: acquiring the corresponding cold load capacities of currently operating water chilling units; comparing the acquired cold load capacities with the preset cold load capacity; and when the acquired cold load capacity and the preset cold load capacity meet the preset condition, loading or deloading the currently operating water chilling units. The group control method and system, provided by the embodiment of the invention, can solve the problem that the group control and management of auxiliary devices in a water station machine room cannot be realized at present.
Description
Technical field
The present invention relates to automatic control technology field, in particular to a kind of group control method and system of handpiece Water Chilling Units.
Background technology
Along with the maximization of modern architecture, multifunction and intellectuality, air-conditioning equipment in building must be caused of a great variety, technical performance is complicated.Along with the continuous increase of maintenance service maintenance project, management work is unartificial can be dealt with.Therefore, Automatic monitoring systems technology and computer management is adopted to become the most important management means of modern architecture.
Cooling-water machine often arranges with engineering site by current water chilling unit system, and the auxiliary equipment be connected with cooling-water machine (such as main frame, console controller, motor-driven valve, water pump and cooling tower etc.) is arranged in cold station.In the running of handpiece Water Chilling Units, often there is refrigerating capacity that handpiece Water Chilling Units provides and the situation that the refrigerating capacity needed for external world's reality is not inconsistent, therefore need to control the start and stop of handpiece Water Chilling Units.
But, there is not group control system in some undersize items at present, very professional computer lab management personnel are needed to operate often for the management and control of auxiliary equipment in cold station, along with the increase day by day of water chilling unit system, rely on artificial operator scheme like this and obviously can not satisfy the demands.
For the problems referred to above, at present effective settling mode is not yet proposed.
Summary of the invention
Embodiments provide a kind of group control method of handpiece Water Chilling Units, to solve the current problem cannot carrying out team control management to the auxiliary equipment of cold station machine room, the method comprises cooling load corresponding to the handpiece Water Chilling Units that gathers current operation; The described cooling load gathered and the cooling load preset are contrasted; When the described cooling load gathered and the described cooling load preset meet pre-conditioned, the handpiece Water Chilling Units of described current operation is loaded or off-load operation.
In one embodiment, the cooling load that the handpiece Water Chilling Units of the current operation of described collection is corresponding specifically comprises the handpiece Water Chilling Units that obtains current operation corresponding circulating fluid flow rate, cold-water return temperature and cold water supply water temperature; According to the described circulating fluid flow rate obtained, cold-water return temperature and cold water supply water temperature, the cooling load that the handpiece Water Chilling Units of current operation is corresponding according to following formulae discovery:
Q＝K×M×(T1-T2)
Wherein, Q represents cooling load corresponding to the handpiece Water Chilling Units of described current operation, and K represents the specific heat coefficient of cycling hot, and M represents described circulating fluid flow rate, and T1 represents described cold-water return temperature, and T2 represents described cold water supply water temperature.
In one embodiment, when the described cooling load and the described cooling load preset that gather meet pre-conditioned, the handpiece Water Chilling Units of described current operation to be loaded or off-load operates and specifically comprises: the variation increment pre-setting cooling load; When the difference of the variation increment of the cooling load that presets and described cooling load described in the described cooling load gathered is less than, load operation is carried out to the handpiece Water Chilling Units of described current operation; When the variation increment sum of the cooling load that presets and described cooling load described in the described cooling load gathered is greater than, off-load operation is carried out to the handpiece Water Chilling Units of described current operation.
In one embodiment, load operation is carried out to the handpiece Water Chilling Units of described current operation and specifically comprises: the operation total duration corresponding according to platform cooling-water machine every in cooling-water machine for subsequent use, filters out cooling-water machine to be loaded from described cooling-water machine for subsequent use; After the handpiece Water Chilling Units described cooling-water machine to be loaded being added described current operation, the base load rating that the cooling load preset described in calculating is corresponding; According to described base load rating and the total quantity of cooling-water machine being in running status after carrying out load operation, calculate the mean load value that every platform cooling-water machine is corresponding; According to described mean load value, regulate the current actual motion load being in the cooling-water machine of running status.
In one embodiment, carry out off-load operation to the handpiece Water Chilling Units of described current operation specifically to comprise: the operation total duration corresponding according to platform cooling-water machine every in the handpiece Water Chilling Units of current operation, filters out the cooling-water machine treating off-load from the handpiece Water Chilling Units of described current operation; After the described cooling-water machine until off-load is removed from the handpiece Water Chilling Units of described current operation, the base load rating that the cooling load preset described in calculating is corresponding; According to described base load rating and the total quantity of cooling-water machine being in running status after carrying out off-load operation, calculate the mean load value that every platform cooling-water machine is corresponding; According to described mean load value, regulate the current actual motion load being in the cooling-water machine of running status.
In one embodiment, after being removed from the handpiece Water Chilling Units of described current operation by the described cooling-water machine until off-load, described method also comprises: treat that the cooling-water machine of off-load arranges starting protection duration for described; In described starting protection duration, described in No starting, treat the cooling-water machine of off-load.
In one embodiment, the handpiece Water Chilling Units of described current operation is loaded or off-load operation before, described method also comprises: the main frame in same cooling-water machine and water pump are interlocked.。
The embodiment of the present invention additionally provides a kind of group control system of handpiece Water Chilling Units, to solve the current problem cannot carrying out team control management to the auxiliary equipment of cold station machine room, this system comprises: main frame, console controller, motor-driven valve, water pump and cooling tower, team control module is provided with in described console controller, described team control module is connected with described motor-driven valve, described water pump and described cooling tower respectively by movable contact, wherein, described team control module comprises: switching value output module, for described movable contact being changed between active contact and passive contact; Cooling load acquisition module, the cooling load that the handpiece Water Chilling Units for gathering current operation is corresponding; Contrast module, for contrasting the described cooling load gathered and the cooling load preset; Processing module, for when the described cooling load gathered and the described cooling load preset meet pre-conditioned, loads the handpiece Water Chilling Units of described current operation or off-load operation.
In one embodiment, described processing module specifically comprises: load cooling-water machine screening module, for the operation total duration corresponding according to platform cooling-water machine every in cooling-water machine for subsequent use, from described cooling-water machine for subsequent use, filter out cooling-water machine to be loaded; First base load rating computing module, for after the handpiece Water Chilling Units described cooling-water machine to be loaded being added described current operation, the base load rating that the cooling load preset described in calculating is corresponding; First mean load value computing module, for according to described base load rating and the total quantity of cooling-water machine being in running status after carrying out load operation, calculates the mean load value that every platform cooling-water machine is corresponding; First running load adjustment module, for according to described mean load value, regulates the current actual motion load being in the cooling-water machine of running status.
In one embodiment, described processing module specifically comprises: off-load cooling-water machine screening module, for the operation total duration corresponding according to platform cooling-water machine every in the handpiece Water Chilling Units of current operation, filters out the cooling-water machine treating off-load from the handpiece Water Chilling Units of described current operation; Second base load rating computing module, for after the described cooling-water machine until off-load is removed from the handpiece Water Chilling Units of described current operation, the base load rating that the cooling load preset described in calculating is corresponding; Second mean load value computing module, for according to described base load rating and the total quantity of cooling-water machine being in running status after carrying out off-load operation, calculates the mean load value that every platform cooling-water machine is corresponding; Second running load adjustment module, for according to described mean load value, regulates the current actual motion load being in the cooling-water machine of running status.
According to group control method and the system of a kind of handpiece Water Chilling Units of the present invention, by arranging team control module in the console controller of handpiece Water Chilling Units, thus can control the motor-driven valve in cooling-water machine system, water pump and cooling tower.In practical application scene, described team control module can the cooling load of handpiece Water Chilling Units of the current operation of Real-Time Monitoring, and the cooling load of monitoring and the cooling load preset are contrasted, thus can carry out selectively loading or off-load operation according to the result of contrast.Namely the operation of described loading or off-load can be realized by the break-make controlling motor-driven valve, water pump and cooling tower in cooling-water machine system.As can be seen here, the group control method of a kind of handpiece Water Chilling Units that the embodiment of the present invention provides and system, can solve the current problem cannot carrying out team control management to the auxiliary equipment of cold station machine room.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The schematic diagram of the group control system of a kind of handpiece Water Chilling Units that Fig. 1 provides for the embodiment of the present application;
The group control method flow chart of a kind of handpiece Water Chilling Units that Fig. 2 provides for the embodiment of the present application.
Detailed description of the invention
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all should belong to the scope of the application's protection.
The group control system schematic diagram of a kind of handpiece Water Chilling Units that Fig. 1 provides for the embodiment of the present application.As shown in Figure 1, described system can comprise the main frame being arranged in cold station, console controller, motor-driven valve, water pump and cooling tower, and these auxiliary equipment being arranged in cold station can be connected with the cooling-water machine being positioned at engineering site.In order to realize the team control to handpiece Water Chilling Units, team control module can be set in described console controller in the embodiment of the present application, described team control module is connected with described motor-driven valve, described water pump and described cooling tower respectively by movable contact (not shown), to control the break-make of described motor-driven valve, described water pump and described cooling tower.
The order starting a cooling-water machine for first starting the blower fan of cooling tower, then can start water pump, finally restarting cooling-water machine.The order of closing a cooling-water machine then can be contrary: first close cooling-water machine, then switch off the pump, finally close the blower fan of cooling tower again.In the embodiment of the present application, switching value output module (not shown) can be provided with in described team control module.Described switching value output module can be connected with described movable contact, and described switching value output module can control described movable contact by the data signal changing output and change between active contact and passive contact.Such as, when the data signal that described switching value output module exports is 0, described movable contact can be converted to passive contact, so just can close by certain contact cut off in described passive contact certain auxiliary equipment be connected with described team control module.On the contrary, when the data signal that described switching value output module exports is 1, described movable contact then can be converted to active contact, thus can provide power supply for the auxiliary equipment be connected with described team control module.
It should be noted that, the situation of a cooling-water machine is illustrate only in Fig. 1, multiple cooling-water machine is often there is in practical application scene, thus can handpiece Water Chilling Units be formed, so in the embodiment of the present application can above-mentioned team control module be all set in the console controller of each cooling-water machine, and each team control module is carried out data interchange, thus the team control to handpiece Water Chilling Units can be realized.
In the embodiment of the present application, can be analyzed by the cooling load of the handpiece Water Chilling Units to current operation, thus realize the team control to described handpiece Water Chilling Units.Particularly, the cooling load acquisition module of cooling load corresponding to handpiece Water Chilling Units for gathering current operation can be set in described team control module.Described cooling load acquisition module can be connected with each sensor in cooling-water machine system, and these sensors can be used for obtaining the various parameters of cooling-water machine system cloud gray model.Particularly, first described cooling load acquisition module can obtain the handpiece Water Chilling Units of current operation corresponding circulating fluid flow rate, cold-water return temperature and cold water supply water temperature, then can the handpiece Water Chilling Units of current operation is corresponding according to following formulae discovery cooling load:
Q＝K×M×(T1-T2)
Wherein, Q represents cooling load corresponding to the handpiece Water Chilling Units of described current operation, and K represents the specific heat coefficient of cycling hot, and M represents described circulating fluid flow rate, and T1 represents described cold-water return temperature, and T2 represents described cold water supply water temperature.
The above-mentioned cooling load calculated is the cooling load of the actual generation of current handpiece Water Chilling Units.But in some cases, the cooling load of the actual generation of described handpiece Water Chilling Units might not match with the cooling load of extraneous demand.Therefore, in the embodiment of the present application, can environment residing for handpiece Water Chilling Units and period, preset this environment and cooling load corresponding to period.This environment described and cooling load corresponding to period can be the cooling load of actual demand, like this, contrast module can also be set in the described team control module of the embodiment of the present application, for the described cooling load gathered and the cooling load preset being contrasted.
After contrasting, often can there are three kinds of results, a kind of be gather cooling load identical with the cooling load preset, so illustrate that the handpiece Water Chilling Units of current operation enough outwardly provides required cooling load, so just without the need to gathering other operations to the handpiece Water Chilling Units of current operation.
When the cooling load gathered is different from the cooling load preset, then need to load the handpiece Water Chilling Units of current operation or off-load operation.Described load operation can be understood as increases extra cooling-water machine in the handpiece Water Chilling Units of current operation, to strengthen the cooling load outwardly provided.Described off-load operation then can be understood as and from the handpiece Water Chilling Units of current operation, reduces corresponding cooling-water machine, to reduce the cooling load outwardly provided.
In the embodiment of the present application, consider that the cooling load in actual environment can change within the scope of one, if directly the cooling load of collection and the theoretical cooling load pre-set are contrasted, comparing result so may be caused not stop change, thus make handpiece Water Chilling Units not stop to switch between loading and off-load, thus the frequent start-stop of cooling-water machine can be caused, can have an impact to the life-span of cooling-water machine.
Given this, the variation increment of cooling load can be pre-set in the embodiment of the present application.So when the difference of the variation increment of the cooling load that presets and described cooling load described in the described cooling load gathered is less than, load operation can be carried out to the handpiece Water Chilling Units of described current operation; And when the variation increment sum of the cooling load that presets and described cooling load described in the described cooling load gathered is greater than, off-load operation can be carried out to the handpiece Water Chilling Units of described current operation.Such as, the described cooling load pre-set can be Q1, described variation increment can be Q2, so in the embodiment of the present application, as long as the cooling load gathered is at [Q1-Q2, Q1+Q2] interval in, just can not load the handpiece Water Chilling Units of current operation or off-load operation, avoid the frequent start-stop to cooling-water machine.
After the cooling load gathered is analyzed, just can take corresponding loading or off-load measure according to the result analyzed.Therefore can in described team control module set handling module, during for meeting pre-conditioned when the described cooling load and the described cooling load preset that gather, the handpiece Water Chilling Units of described current operation to be loaded or off-load operates.Described meet pre-conditioned can be just above-mentioned size contrast condition, corresponding operation can be taked according to the result of contrast in the embodiment of the present application.Particularly, when needing to carry out load operation to the handpiece Water Chilling Units of current operation, the cooling-water machine can choosing predetermined number from the cooling-water machine multiple for subsequent use being in holding state joins in the handpiece Water Chilling Units of current operation, to increase the cooling load provided to external world.In the embodiment of the present application, in order to make full use of the operating efficiency of each cooling-water machine, in conjunction with the total operating time of each cooling-water machine, can reasonably select the cooling-water machine for subsequent use in the handpiece Water Chilling Units needing to join current operation.Particularly, the embodiment of the present application can arrange and add refrigerating random screening module in described processing module, for the operation total duration corresponding according to platform cooling-water machine every in cooling-water machine for subsequent use, from described cooling-water machine for subsequent use, filters out cooling-water machine to be loaded.Such as, cooling-water machine one for subsequent use has 5, the total duration of operation that these 5 cooling-water machines are corresponding is respectively 200 hours, 250 hours, 120 hours, 300 hours and 100 hours, so just can choose from these 5 cooling-water machines and run the cooling-water machine that total duration is 100 hours, to add in the handpiece Water Chilling Units of current operation.Certainly, the quantity of the cooling-water machine chosen can pre-set, and can be 1 or 2 or more, the embodiment of the present application limit this.
After the cooling-water machine to be loaded filtered out is added the handpiece Water Chilling Units of current operation, in order to ensure the load balancing of each cooling-water machine, mean load value corresponding to each handpiece Water Chilling Units can be recalculated in the embodiment of the present application.Particularly, the first base load rating computing module can be set in described processing module, for after the handpiece Water Chilling Units described cooling-water machine to be loaded being added described current operation, the base load rating that the cooling load preset described in calculating is corresponding.Often there is a corresponding relation between cooling load and load value, this corresponding relation can be represented by following formula:
Q＝σP
Wherein, Q can represent cooling load, and σ can represent conversion coefficient, and P can represent load value.Particularly, described conversion coefficient can be determined according to the cooling-water machine of actual motion, and conversion coefficient is higher, and the cooling load be converted to from load value is also higher.
After the base load rating that the cooling load preset described in calculating is corresponding, first mean load value computing module can be set in processing module, for according to described base load rating and the total quantity of cooling-water machine being in running status after carrying out load operation, calculate the mean load value that every platform cooling-water machine is corresponding.Such as, described base load rating is P, and the total quantity being in the cooling-water machine of running status after carrying out load operation is N, and so described mean load value just can be P/N.
After determining the mean load value that every platform cooling-water machine is corresponding, just can the first running load adjustment module be set in described processing module, for according to described mean load value, regulates the current actual motion load being in the cooling-water machine of running status.
When needing to carry out off-load operation to the handpiece Water Chilling Units of current operation, then can carry out above-mentioned similar step equally.Particularly, first off-load cooling-water machine screening module can be set in processing module, for the operation total duration corresponding according to platform cooling-water machine every in the handpiece Water Chilling Units of current operation, from the handpiece Water Chilling Units of described current operation, filter out the cooling-water machine treating off-load.Particularly, the longest cooling-water machine of total duration can be run in the handpiece Water Chilling Units of current operation be defined as treating the cooling-water machine of off-load.Then the second base load rating computing module can be set in processing module, for after the described cooling-water machine until off-load is removed from the handpiece Water Chilling Units of described current operation, the base load rating that the cooling load preset described in calculating is corresponding.Similarly, the second mean load value computing module can also be set in described processing module, for according to described base load rating and the total quantity of cooling-water machine being in running status after carrying out off-load operation, calculate the mean load value that every platform cooling-water machine is corresponding; And the second running load adjustment module, for according to described mean load value, regulate the current actual motion load being in the cooling-water machine of running status.
By above-mentioned loading or off-load operation, cooling load needed for it just can be outwardly provided, the workload of all right each cooling-water machine balanced, takes full advantage of the operating efficiency of every platform cooling-water machine, thus adds the life-span of whole water chilling unit system simultaneously.
In addition; in order to avoid carrying out enabling again to the cooling-water machine of just stopping using; protection module can also be set in described team control module in the embodiment of the present application; for for described in treat that the cooling-water machine of off-load arranges starting protection duration and in described starting protection duration, treats the cooling-water machine of off-load described in No starting.Like this, after a certain cooling-water machine quits work, can avoid again starting it within a period of time, to protect this cooling-water machine.
In addition, in practical application scene, sometimes there will be the fault of various equipment.Such as in certain running, there is fault in the main frame in cooling-water machine, and so now cooling-water machine just cannot normally work, but water pump also cannot know that main frame breaks down, thus can continue to supply water in cooling-water machine, can cause damage like this to cooling-water machine.In order to avoid such situation occurs, in the team control module of the embodiment of the present application, can interlocking module be set, for the main frame in same cooling-water machine and water pump being interlocked.Like this, when any one party no matter in main frame or water pump breaks down, the opposing party also can quit work immediately, thus protects cooling-water machine.
Therefore, according to the group control system of a kind of handpiece Water Chilling Units of the present invention, by arranging team control module in the console controller of handpiece Water Chilling Units, thus can control the motor-driven valve in cooling-water machine system, water pump and cooling tower.In practical application scene, described team control module can the cooling load of handpiece Water Chilling Units of the current operation of Real-Time Monitoring, and the cooling load of monitoring and the cooling load preset are contrasted, thus can carry out selectively loading or off-load operation according to the result of contrast.Namely the operation of described loading or off-load can be realized by the break-make controlling motor-driven valve, water pump and cooling tower in cooling-water machine system.As can be seen here, the group control method of a kind of handpiece Water Chilling Units that the embodiment of the present invention provides and system, can solve the current problem cannot carrying out team control management to the auxiliary equipment of cold station machine room.
The application also provides a kind of group control method of handpiece Water Chilling Units.The group control method flow chart of a kind of handpiece Water Chilling Units that Fig. 2 provides for the embodiment of the present application.As shown in Figure 2, described method can comprise:
S1: gather the cooling load that the handpiece Water Chilling Units of current operation is corresponding;
S2: the described cooling load gathered and the cooling load preset are contrasted;
S3: when the described cooling load gathered and the described cooling load preset meet pre-conditioned, loads the handpiece Water Chilling Units of described current operation or off-load operation.
In the application one preferred embodiment, the cooling load that the handpiece Water Chilling Units of the current operation of described collection is corresponding specifically comprises:
Obtain circulating fluid flow rate corresponding to the handpiece Water Chilling Units of current operation, cold-water return temperature and cold water supply water temperature;
According to the described circulating fluid flow rate obtained, cold-water return temperature and cold water supply water temperature, the cooling load that the handpiece Water Chilling Units of current operation is corresponding according to following formulae discovery:
Q＝K×M×(T1-T2)
Wherein, Q represents cooling load corresponding to the handpiece Water Chilling Units of described current operation, and K represents the specific heat coefficient of cycling hot, and M represents described circulating fluid flow rate, and T1 represents described cold-water return temperature, and T2 represents described cold water supply water temperature.
In another preferred embodiment of the application, when the described cooling load and the described cooling load preset that gather meet pre-conditioned, the handpiece Water Chilling Units of described current operation to be loaded or off-load operates and specifically comprises:
Pre-set the variation increment of cooling load;
When the difference of the variation increment of the cooling load that presets and described cooling load described in the described cooling load gathered is less than, load operation is carried out to the handpiece Water Chilling Units of described current operation;
When the variation increment sum of the cooling load that presets and described cooling load described in the described cooling load gathered is greater than, off-load operation is carried out to the handpiece Water Chilling Units of described current operation.
In another preferred embodiment of the application, load operation is carried out to the handpiece Water Chilling Units of described current operation and specifically comprises:
The operation total duration corresponding according to platform cooling-water machine every in cooling-water machine for subsequent use, filters out cooling-water machine to be loaded from described cooling-water machine for subsequent use;
After the handpiece Water Chilling Units described cooling-water machine to be loaded being added described current operation, the base load rating that the cooling load preset described in calculating is corresponding;
According to described base load rating and the total quantity of cooling-water machine being in running status after carrying out load operation, calculate the mean load value that every platform cooling-water machine is corresponding;
According to described mean load value, regulate the current actual motion load being in the cooling-water machine of running status.
In another preferred embodiment of the application, off-load operation is carried out to the handpiece Water Chilling Units of described current operation and specifically comprises:
The operation total duration corresponding according to platform cooling-water machine every in the handpiece Water Chilling Units of current operation, filters out the cooling-water machine treating off-load from the handpiece Water Chilling Units of described current operation;
After the described cooling-water machine until off-load is removed from the handpiece Water Chilling Units of described current operation, the base load rating that the cooling load preset described in calculating is corresponding;
According to described base load rating and the total quantity of cooling-water machine being in running status after carrying out off-load operation, calculate the mean load value that every platform cooling-water machine is corresponding;
According to described mean load value, regulate the current actual motion load being in the cooling-water machine of running status.
In another preferred embodiment of the application, after being removed from the handpiece Water Chilling Units of described current operation by the described cooling-water machine until off-load, described method also comprises:
Treat that the cooling-water machine of off-load arranges starting protection duration for described;
In described starting protection duration, described in No starting, treat the cooling-water machine of off-load.
In another preferred embodiment of the application, the handpiece Water Chilling Units of described current operation is loaded or off-load operation before, described method also comprises:
Main frame in same cooling-water machine and water pump are interlocked.
It should be noted that, the specific implementation process in each method step above-mentioned is all consistent with the description in apparatus module, just repeats no more here.
Therefore, according to the group control method of a kind of handpiece Water Chilling Units of the present invention, by arranging team control module in the console controller of handpiece Water Chilling Units, thus can control the motor-driven valve in cooling-water machine system, water pump and cooling tower.In practical application scene, described team control module can the cooling load of handpiece Water Chilling Units of the current operation of Real-Time Monitoring, and the cooling load of monitoring and the cooling load preset are contrasted, thus can carry out selectively loading or off-load operation according to the result of contrast.Namely the operation of described loading or off-load can be realized by the break-make controlling motor-driven valve, water pump and cooling tower in cooling-water machine system.As can be seen here, the group control method of a kind of handpiece Water Chilling Units that the embodiment of the present invention provides and system, can solve the current problem cannot carrying out team control management to the auxiliary equipment of cold station machine room.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the embodiment of the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a group control method for handpiece Water Chilling Units, is characterized in that, comprising:
Gather the cooling load that the handpiece Water Chilling Units of current operation is corresponding;
The described cooling load gathered and the cooling load preset are contrasted;
When the described cooling load gathered and the described cooling load preset meet pre-conditioned, the handpiece Water Chilling Units of described current operation is loaded or off-load operation.
2. group control method as claimed in claim 1, it is characterized in that, the cooling load that the handpiece Water Chilling Units of the current operation of described collection is corresponding specifically comprises:
Obtain circulating fluid flow rate corresponding to the handpiece Water Chilling Units of current operation, cold-water return temperature and cold water supply water temperature;
According to the described circulating fluid flow rate obtained, cold-water return temperature and cold water supply water temperature, the cooling load that the handpiece Water Chilling Units of current operation is corresponding according to following formulae discovery:
Q＝K×M×(T1-T2)
Wherein, Q represents cooling load corresponding to the handpiece Water Chilling Units of described current operation, and K represents the specific heat coefficient of cycling hot, and M represents described circulating fluid flow rate, and T1 represents described cold-water return temperature, and T2 represents described cold water supply water temperature.
3. group control method as claimed in claim 1, is characterized in that, when the described cooling load gathered meets pre-conditioned with the described cooling load preset, to load or off-load operates and specifically comprises to the handpiece Water Chilling Units of described current operation:
Pre-set the variation increment of cooling load;
When the difference of the variation increment of the cooling load that presets and described cooling load described in the described cooling load gathered is less than, load operation is carried out to the handpiece Water Chilling Units of described current operation;
When the variation increment sum of the cooling load that presets and described cooling load described in the described cooling load gathered is greater than, off-load operation is carried out to the handpiece Water Chilling Units of described current operation.
4. group control method as claimed in claim 3, is characterized in that, carry out load operation specifically comprise the handpiece Water Chilling Units of described current operation:
The operation total duration corresponding according to platform cooling-water machine every in cooling-water machine for subsequent use, filters out cooling-water machine to be loaded from described cooling-water machine for subsequent use;
After the handpiece Water Chilling Units described cooling-water machine to be loaded being added described current operation, the base load rating that the cooling load preset described in calculating is corresponding;
According to described base load rating and the total quantity of cooling-water machine being in running status after carrying out load operation, calculate the mean load value that every platform cooling-water machine is corresponding;
According to described mean load value, regulate the current actual motion load being in the cooling-water machine of running status.
5. group control method as claimed in claim 3, is characterized in that, carries out off-load operation specifically comprise the handpiece Water Chilling Units of described current operation:
The operation total duration corresponding according to platform cooling-water machine every in the handpiece Water Chilling Units of current operation, filters out the cooling-water machine treating off-load from the handpiece Water Chilling Units of described current operation;
After the described cooling-water machine until off-load is removed from the handpiece Water Chilling Units of described current operation, the base load rating that the cooling load preset described in calculating is corresponding;
According to described base load rating and the total quantity of cooling-water machine being in running status after carrying out off-load operation, calculate the mean load value that every platform cooling-water machine is corresponding;
According to described mean load value, regulate the current actual motion load being in the cooling-water machine of running status.
6. group control method as claimed in claim 5, it is characterized in that, after being removed from the handpiece Water Chilling Units of described current operation by the described cooling-water machine until off-load, described method also comprises:
Treat that the cooling-water machine of off-load arranges starting protection duration for described;
In described starting protection duration, described in No starting, treat the cooling-water machine of off-load.
7. group control method as claimed in claim 1, is characterized in that, is loading or before off-load operation, described method also comprises to the handpiece Water Chilling Units of described current operation:
Main frame in same cooling-water machine and water pump are interlocked.
8. the group control system of a handpiece Water Chilling Units, comprise main frame, console controller, motor-driven valve, water pump and cooling tower, is characterized in that, team control module is provided with in described console controller, described team control module is connected with described motor-driven valve, described water pump and described cooling tower respectively by movable contact, and wherein, described team control module comprises:
Switching value output module, for changing described movable contact between active contact and passive contact;
Cooling load acquisition module, the cooling load that the handpiece Water Chilling Units for gathering current operation is corresponding;
Contrast module, for contrasting the described cooling load gathered and the cooling load preset;
Processing module, for when the described cooling load gathered and the described cooling load preset meet pre-conditioned, loads the handpiece Water Chilling Units of described current operation or off-load operation.
9. group control system as claimed in claim 8, it is characterized in that, described processing module specifically comprises:
Load cooling-water machine screening module, for the operation total duration corresponding according to platform cooling-water machine every in cooling-water machine for subsequent use, from described cooling-water machine for subsequent use, filter out cooling-water machine to be loaded;
First base load rating computing module, for after the handpiece Water Chilling Units described cooling-water machine to be loaded being added described current operation, the base load rating that the cooling load preset described in calculating is corresponding;
First mean load value computing module, for according to described base load rating and the total quantity of cooling-water machine being in running status after carrying out load operation, calculates the mean load value that every platform cooling-water machine is corresponding;
First running load adjustment module, for according to described mean load value, regulates the current actual motion load being in the cooling-water machine of running status.
10. group control system as claimed in claim 8, it is characterized in that, described processing module specifically comprises:
Off-load cooling-water machine screening module, for the operation total duration corresponding according to platform cooling-water machine every in the handpiece Water Chilling Units of current operation, filters out the cooling-water machine treating off-load from the handpiece Water Chilling Units of described current operation;
Second base load rating computing module, for after the described cooling-water machine until off-load is removed from the handpiece Water Chilling Units of described current operation, the base load rating that the cooling load preset described in calculating is corresponding;
Second mean load value computing module, for according to described base load rating and the total quantity of cooling-water machine being in running status after carrying out off-load operation, calculates the mean load value that every platform cooling-water machine is corresponding;
Second running load adjustment module, for according to described mean load value, regulates the current actual motion load being in the cooling-water machine of running status.
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