CN105135636B - Central air-conditioning variable-flow optimizes system - Google Patents

Central air-conditioning variable-flow optimizes system Download PDF

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CN105135636B
CN105135636B CN201510593195.XA CN201510593195A CN105135636B CN 105135636 B CN105135636 B CN 105135636B CN 201510593195 A CN201510593195 A CN 201510593195A CN 105135636 B CN105135636 B CN 105135636B
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water
pump
computer
temperature
controller
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CN105135636A (en
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褚如圣
褚如元
方慧丽
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Hangzhou Yuda Automation Technology Co., Ltd.
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Hangzhou Yuda Automation Technology Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0003Exclusively-fluid systems

Abstract

The present invention relates to a kind of central air-conditioning variable-flow to optimize system, is not good enough for solving existing like product energy efficiency management and energy-saving effect, intelligent control and data acquisition are owed the technical problem of science and designed.Its main points is that refrigeration host computer, cooling pump, refrigerating water pump, the heat-exchanger pump of the system are respectively equipped with dynamic controller, cooling pump dynamic throttling instrument, refrigerating water pump dynamic throttling instrument, heat-exchanger pump dynamic throttling instrument, and is connected respectively by signal switch board with computer;Each bypass duct of water knockout drum and water collector is respectively equipped with electric control valve and temperature sensor, cooling pump and refrigerating water pump are respectively equipped with flowmeter, differential pressure pickup, temperature sensor, the outlet pipe of refrigeration host computer is provided with temperature sensor, computer is analyzed data, dynamic throttling instrument and dynamic controller corresponding to control, and water outlet and water inlet;The temperature in room is adjusted by temperature controller for building manager, and computer is monitored by the circuit of fan coil to the temperature of temperature controller.

Description

Central air-conditioning variable-flow optimizes system
Technical field
The present invention relates to controlling system of central air conditioner, is a kind of central air-conditioning variable-flow optimization system.
Background technology
Central air conditioner system is usually to be made up of cold and heat source system and air handling system, and it uses what vaporizing liquid freezed Principle provides institute's chilling requirement for air handling system, to offset the refrigeration duty of indoor environment;Heating is air adjustment system System is provided to offset the heat of indoor environment thermic load.But central hollow used by the fields such as some megastore, hotel, hospital Adjusting system is generally computer-room air conditioning system, wherein relatively broad using water-cooled central air-conditioning, its Water-cooling type air conditioner is entering The cooling tower of blower fan cooling cascade is provided with air port, and the heat in room is taken away by water, or the external world Heat gives room, and certain humidity is contained in air, and cold wind effect refrigeration and ventilation are more comfortable.Its operation principle is:First Cold water is made by air-conditioner set, then air cooled down, then the air after cooling is sent into interior;Meanwhile air-conditioner set can also Produce cold water and remove heat is sent to cooling tower by cooling water, cooled down, cooling is over and returns to take away heat again, wraps Include:Cooling water circulation, freezing water circulation, refrigerant circulation.Wherein, chilled water is contacted with cooling water by refrigerant circulation, system Cryogen plays intermediation;Chilled water takes away the heat in room, and cooling water takes away the heat of chilled water.
But the above-mentioned general energy consumption of computer-room air conditioning system is higher, and lack of wisdom temperature treatment and regulation and control, to reduce above-mentioned machine The energy consumption of room air-conditioning system, some producers have carried out the technological improvement of energy-saving and emission-reduction to existing central air conditioner system.Such as China specially The application number 200910192602.0 disclosed in sharp document, publication date 2011 year 04 month 20 days, " one kind is used for center to denomination of invention The energy-saving control method of air-conditioner system ";The energy-saving control method is by multiple sensor gathered data, self-inspection data, control number According to setting and display, mathematical logic analyzing and processing and control, perform data output, service data storage output and remote monitoring system Unite this six functions, central air conditioner system is carried out in real time and remote intelligent, the Energy Saving Control of automation;And by multichannel The data of sensor collection, by the way that compared with the control data set, the data of self-test are controlled into Data Analysis Services, from And the automatic start to auxiliary equipments such as the refrigerating water pump of central air conditioner system, cooling pump and cooling tower blower fans is realized, then Central air conditioner system main frame is set to be run according to the pattern delayed startup of setting, and with the freezing of central air conditioner system main frame The control data of the coolant-temperature gage setting of water, cooling water output with reclaiming entrance, the working condition of control adjustment complete machine.It is but above-mentioned The design of the energy efficiency management of central air conditioner system and existing like product, energy-saving effect etc. or not good enough, need to further change Enter and perfect.
The content of the invention
To overcome above-mentioned deficiency, the purpose of the present invention is to provide a kind of central air-conditioning variable-flow optimization system to this area, Solving it, existing like product energy efficiency management and energy-saving effect be not good enough, and the technology of intelligent control and the deficient science of data acquisition is asked Topic.The purpose is to what is be achieved through the following technical solutions.
A kind of central air-conditioning variable-flow optimizes system, and variable-flow optimization system includes refrigeration station computer room, computer, and its The room end of pipeline connection, refrigeration station computer room include refrigeration host computer, refrigerating water pump, cooling pump, water collector, water knockout drum, heat-exchanger pump, And its frequency-conversion control cabinet and signal switch board, relevant device, the control program of computer and computer, and frequency-conversion control cabinet and Signal switch board forms fuzzy controller, and water knockout drum connects outlet pipe, the refrigeration host computer of water main, water main and refrigerating water pump Outlet pipe connection, water collector connection return main, the water inlet pipe of return main and refrigerating water pump connects, the water outlet of refrigeration host computer The cooling blower of pipe, the water inlet pipe of cooling pump and cooling tower connects, and the outlet pipe of cooling pump and the water inlet pipe of refrigeration host computer connect Place is provided with cooling valve, and the outlet pipe of refrigerating water pump and the outlet pipe junction of refrigeration host computer are provided with freezing valve, and heat-exchanger pump is respectively with dividing Hydrophone, water collector connection;Room end includes fan coil, building manager and split time type temperature controller, fan coil point The air outlet in room is not arranged at, and split time type temperature controller, split time type temperature controller and fan unit are respectively equipped with room The circuit connection of pipe, the floor in room are respectively equipped with building manager, and the circuit of fan coil is connected with building manager respectively, Building manager is connected by signal switch board with computer respectively;It is characterized in that the refrigeration host computer, cooling pump, freezing Pump, heat-exchanger pump are respectively equipped with dynamic controller, cooling pump dynamic throttling instrument, refrigerating water pump dynamic throttling instrument, heat-exchanger pump dynamic throttling Instrument, and be connected respectively by signal switch board with computer;Each bypass duct of the water knockout drum and water collector is respectively equipped with electronic Regulating valve and temperature sensor, cooling pump and refrigerating water pump are respectively equipped with flowmeter, differential pressure pickup, temperature sensor, refrigeration master The outlet pipe of machine is provided with temperature sensor, above-mentioned electric control valve, temperature sensor, flowmeter, differential pressure pickup, dynamic throttling Instrument and dynamic controller are connected by signal switch board with computer respectively;The computer is to flowmeter, differential pressure pickup, temperature The data of degree sensor transmissions are analyzed, and refrigerating water pump, cooling pump, heat-exchanger pump are moved by the frequency converter in frequency-conversion control cabinet State throttling instrument, and the dynamic controller of refrigeration host computer are controlled, and by water outlet of the electric control valve to water knockout drum and are catchmented The water inlet of device is controlled;The temperature in room is adjusted by split time type temperature controller for building manager, computer The temperature of split time type temperature controller is monitored by the circuit of fan coil.
Above-mentioned electric control valve realizes the balance control of tail end of central air conditioner energy, i.e., cold with reference to central air-conditioning multizone (heat) measures equilibrium assignment energy-conserving control technology, and central air-conditioning cold and hot amount obscures and judges energy-conserving control technology in advance, to central air-conditioning End carries out energy saving optimizing.Specially:According to the temperature difference size of each loop return water temperature and water main's measured temperature, in guarantee On the premise of entreating each loop least favorable end water supply (pressure difference between water main and each loop backwater) of air-conditioning, pass through dynamic adjustment point The electric control valve of each loop of hydrophone, makes the temperature difference of each loop reach unanimity, so as to reach the energy that each loop is obtained Balanced with demand, reach the balance optimizing control of energy.When each loop return water temperature of central air-conditioning requirement is inconsistent, root According to each loop return water temperature measured value compared with setting value, by dynamically adjusting the electric control valve of each loop, make each ring Road actual temperature of return water reaches unanimity with design temperature, reaches tail end of central air conditioner cold equilibrium assignment optimal control, reaches high Effect energy-conservation.When lower limit is arrived in the regulation of central air-conditioning load pump frequency, tail end of central air conditioner load is also declining, water main and backwater Pressure difference can gradually increase between house steward, and the pressure at water main and return main both ends is now balanced by adjusting differential-pressure bypass valve aperture Difference, unnecessary load water is mixed into backwater side, ensure that its pressure at two ends is maintained at constant pressure difference, ensureing that central air-conditioning is cold and hot While amount demand, reach the unit safety and management safety of protection refrigeration host computer.
The computer is connected with the Temperature and Humidity device of outdoor setting, the data parameters transmitted according to Temperature and Humidity device Set the initial temperature in room.Because the factors such as cooling pump coolant-temperature gage and outdoor environment temperature, humidity are relevant, weather bar The time variation of part and heat extraction load, influence the control targe that Frequency Converter Control mode reaches running efficiency of system optimization;Meanwhile room The Temperature and Humidity device of outer installation is easy to and indoor control reference.
The split time type temperature controller replaces with interconnection type temperature controller, and interconnection type temperature controller is controlled by computer and networked The initial temperature of type temperature controller.Interconnection type temperature controller possesses conventional blower coil pipe temperature controller possessed all functions, can control System realizes the start and stop that temperature setting is transferred the files with display, third gear wind speed, and monitoring running state, remote on-off, two-way electronic valve are opened Control etc. is closed, plain edition temperature controller can be substituted completely using interconnection type temperature controller.Meanwhile interconnection type temperature controller be applied to industry, The temperature control of business and family room, by the comparison of indoor temperature and design temperature, to the fan unit of air-conditioning system end Pipe and motor-driven valve control, reach regulation indoor temperature, improve the purpose of comfort level and energy-conservation.
In order to simplify to said structure, variable-flow optimization system also may be used:The cooling pump omits differential pressure pickup; The water collector omits electric control valve;The temperature sensor of the water knockout drum or one are arranged at water main.The cooling The flowmeter of pump, differential pressure pickup, temperature sensor or respectively one be arranged at outfall sewer;The flowmeter of the refrigerating water pump, Differential pressure pickup, temperature sensor or respectively one be arranged at water inlet manifold.
In order to remotely check working condition to said structure and facilitate field management, variable-flow optimization system also may be used:Institute State signal switch board to be connected with notebook computer or mobile phone by wireless network signal, notebook computer and mobile phone show provided with data Show program;The building manager is connected by wireless network signal with signal switch board.So as to pass through notebook computer and hand Machine remotely checks the working condition of variable-flow optimization system, and reduces the laying of LAN circuit.The room end Window is provided with windowing controller, and windowing controller is connected by building manager with computer, computer and corridor information desk Computer connects.So as to which the computer of building manager, windowing controller respectively with corridor information desk is connected, pass through corridor service The computer of platform is directly viewable door and window and opens situation and room temperature setting situation, is easy to site administrator directly to manage air-conditioning Temperature, prevent window from opening, it is especially useful in the opening of monitoring hospital window, to prevent unexpected generation.
Energy-saving effect, the energy efficiency management of the present invention is good, and intelligent control and data acquisition are accurate;Suitable for the change of central air-conditioning Flow optimization and energy-saving and emission-reduction, ex hoc genus anne product further improvement.
Brief description of the drawings
Fig. 1 is the operation principle schematic diagram of the present invention.
Fig. 2 is the chilled water system process blocks schematic diagram of the present invention.
Fig. 3 is the cooling water system process blocks schematic diagram of the present invention.
Fig. 4 is the split time type temperature controller wiring schematic diagram of the present invention, and dotted line is ceiling in figure.
Fig. 5 is the building manager wiring schematic diagram of the present invention.
Figure number and title:1st, refrigeration host computer, 2, cooling pump, 3, water-cooling fan, 4, refrigerating water pump, 5, water collector, 6, point Hydrophone, 7, electric control valve, 8, freezing valve, 9, cooling valve.
Embodiment
In conjunction with accompanying drawing, the operation principle of the present invention is further described.As shown in figure 1, the variable-flow optimizes system Including refrigeration station computer room, computer, and its room end of pipeline connection, refrigeration station computer room include refrigeration host computer 1, refrigerating water pump 2, Cooling pump 4, water collector 5, water knockout drum 6, heat-exchanger pump, and its frequency-conversion control cabinet and signal switch board, the phase of computer and computer Equipment, control program are closed, and frequency-conversion control cabinet and signal switch board form fuzzy controller, water knockout drum connects water main, The outlet pipe of water main and refrigerating water pump, refrigeration host computer outlet pipe connection, water collector connection return main, return main with it is cold Freeze the water inlet pipe connection of pump, the cooling blower 3 of the outlet pipe of refrigeration host computer, the water inlet pipe of cooling pump and cooling tower is connected, cooled down The outlet pipe of pump and the water inlet pipe junction of refrigeration host computer are provided with cooling valve 9, the water outlet of the outlet pipe and refrigeration host computer of refrigerating water pump Pipe junction is provided with freezing valve 8, and heat-exchanger pump is connected with water knockout drum, water collector respectively;Room end includes fan coil, Lou Dongguan Reason device and split time type temperature controller, fan coil are respectively arranged at the air outlet in room, the split time are respectively equipped with room The circuit connection of type temperature controller, split time type temperature controller and fan coil, the floor in room are respectively equipped with building manager, wind The circuit of machine coil pipe is connected with building manager respectively, and building manager is connected by signal switch board with computer respectively.System Cold main frame, cooling pump, refrigerating water pump, heat-exchanger pump are respectively equipped with dynamic controller, cooling pump dynamic throttling instrument, refrigerating water pump dynamic throttling Instrument, heat-exchanger pump dynamic throttling instrument, and be connected respectively by signal switch board with computer;Each bypass duct of water knockout drum is respectively equipped with Electric control valve 7, each bypass duct difference temperature sensor of water collector, the outfall sewer of cooling pump are provided with flowmeter, temperature biography Sensor, the water inlet manifold of refrigerating water pump are provided with flowmeter, differential pressure pickup, temperature sensor, the outlet pipe of refrigeration host computer and water supply House steward is respectively equipped with temperature sensor, above-mentioned electric control valve, temperature sensor, flowmeter, differential pressure pickup, dynamic throttling instrument It is connected respectively by signal switch board with computer with dynamic controller;The computer is to flowmeter, differential pressure pickup, temperature The data of sensor transmissions are analyzed, by the frequency converter in frequency-conversion control cabinet to refrigerating water pump, cooling pump, the dynamic of heat-exchanger pump Throttled instrument, and the dynamic controller of refrigeration host computer is controlled, and is controlled by water outlet of the electric control valve to water knockout drum; The temperature in room is adjusted by split time type temperature controller for building manager, the circuit that computer passes through fan coil The temperature of split time type temperature controller is monitored.The computer integrated monitoring water chiller-heater unit of variable-flow optimization system, The equipment such as chilled water pump, cooling water pump, cooling tower, motor-driven valve, system management module SSM, refrigerating water pump intelligent control module CPC, Cooling pump intelligent control module CPQ and blower fan of cooling tower intelligent control module CTF, can in holding handpiece Water Chilling Units Energy Efficiency Ratio and safety On the premise of by operation, by adjusting the change of chilled-water flow, cooling water flow, make the whole energy of cold source system maximum Change.Communicated by procotol with handpiece Water Chilling Units, read whole parameters of water chiller-heater unit, perform VFP air conditioner energy saving pipes Reason software optimizes control.
The main frame operational factor of the energy-saving control system:Load level absolute value or percentage;Supply water temperature setting value;It is cold Freeze water water inlet and leaving water temperature;Cooling water is intake and leaving water temperature;Evaporator/condenser refrigerant pipeline pressure;Evaporator/condensation The saturation temperature of device refrigerant;This run time and accumulated running time;The accumulative number of starts;Temperature of lubricating oil of compressor with and Supply level.Security control parameter:Show that various faults information and safety indicate, including:Date, time, shut down reason;Condensation Hypertonia;Oil pressure is too low;High oil temperature;Compressor exhaust temperature is too high;Evaporating pressure is too low.Operation control:Open at a distance Dynamic and shutdown;Chilled water supply and return water temperature is reset;Motor current percentage is reset.Host Status is shown:Start and prepare; Safeguard protection;Shut down.Flow and chilled water supply backwater temperature difference according to being gathered calculate current loads, and with historical record Main unit load efficiency characteristic or experience main unit load efficiency characteristic, determine to need what is put into operation by fuzzy inference rule Main frame number of units and specific unit, it is ensured that system has highest operational efficiency.The monitoring in groups of blower fan of cooling tower:Due to cooling water The maximum unlatching for depending on blower fan of cooling tower of cooling, therefore to blower fan of cooling tower it is not recommended that doing VFC.To cooling tower wind The basic demand of machine control is the cooling water temperature for ensureing to handle by cooling tower (i.e. into the coolant water temperature of cooling-water machine condenser Degree, is referred to as cooling tower supply water temperature) meet the requirement of refrigeration machine.In room band communication liquid crystal display temperature controller and Relay output module, all temperature controller and output module are linked together by a common twisted-pair feeder, pass through journey Sequence configuration is completed temperature controller and bound with corresponding output module, and data are sent into control centre, control centre's electricity by bus Brain is conducted interviews and controlled to network by web browser.
The characteristics of system is optimized according to the above-mentioned variable-flow, as shown in Figure 1-Figure 3, technical points:1st, in air-conditioning backwater Each branch road house steward fills electric control valve, realizes that air conditioning terminal energy balance controls.It is equal with reference to central air-conditioning multizone cold (heat) amount Weighing apparatus distribution energy-conserving control technology and central air-conditioning cold and hot amount is fuzzy judges energy-conserving control technology in advance, air conditioning terminal save excellent Change.According to the temperature difference size of each loop return water temperature and water main's measured temperature, ensure that each loop least favorable end of air-conditioning supplies On the premise of water (pressure difference between water main and each loop backwater), by dynamically adjusting the electric control valve of each loop, make each The temperature difference of loop reaches unanimity, and the energy obtained so as to reach each loop balances with demand, and the balance for reaching energy is excellent Change control;When air-conditioning system requires that each loop return water temperature is inconsistent, according to each loop return water temperature measured value with setting Definite value is compared, and by dynamically adjusting the electric control valve of each loop, each loop actual temperature of return water is tended to design temperature Unanimously, reach air conditioning terminal cold equilibrium assignment optimal control, reach energy-efficient.When the regulation of air conditioner load pump frequency is arrived down Limit, air conditioning terminal load are also declining, and pressure difference can gradually increase between water main and return main, now by adjusting by pressure difference Port valve aperture balances the pressure difference at water main and return main both ends, unnecessary load water is mixed into backwater side, ensures its both ends Pressure is maintained at constant pressure difference, and protection unit safety and management safety are reached while air-conditioning cold heat demand is ensured.
2nd, the optimal output energy hole of chilled water system:Central air-conditioning variable-flow optimizes system to air conditioning water system Optimal output energy hole is realized using fuzzy prediction algorithm.When weather conditions or air conditioning terminal load change, air-conditioning Cold chilled water system supply and return water temperature, the temperature difference, pressure difference and flow also change therewith, flowmeter, differential pressure pickup and TEMP These parameters detected are delivered to fuzzy controller by device, and fuzzy controller is according to the real time data gathered and the experience of system Data, according to fuzzy prediction algorithm model, system performance and cycle period, by reasoning, predict future time instance air conditioner load Required refrigerating capacity and the operational factor of system, including chilled water supply and return water temperature, the temperature difference, the optimum value of pressure difference and flow, and Each frequency converter output frequency is adjusted with this, the rotating speed of refrigerating water pump is controlled, changes its flow, make chilled water system supplies backwater temperature Degree, the temperature difference, pressure difference and flow operate in the optimal value that fuzzy controller provides, and make system output energy and end load demand phase Matching.Because chilled water system employs the dynamic control of output energy, realize that air-conditioner host cold medium flux follows end load Demand supply, make air-conditioning system under various load conditions, can both ensure the comfortableness of terminal temperature difference, and to greatest extent Save the energy expenditure of system.In this project, the control algolithm of desired flow is used for refrigerating water pump, is ensureing that end relaxes Minimum energy consumption is consumed while adaptive.
3rd, the system effectiveness Optimal Control of cooling water system:When weather conditions or tail end of central air conditioner load change When, central air conditioner main machine rate of load condensate will change therewith, and the efficiency of main frame also changes therewith.Due to engine efficiency and cooling pump water temperature Relevant, cooling pump coolant-temperature gage reduction within the specific limits is spent, is advantageous to improve engine efficiency, reduces main frame energy consumption.But cooling pump Coolant-temperature gage is reduced, and the energy consumption for causing cooling pump is raised;Therefore, only main frame energy consumption, the unification of cooling pump energy consumption are considered, each A cooling pump coolant-temperature gage that can be kept corresponding to system effectiveness (system COP) highest is found under kind loading condiction, that is, finds one Individual system effectiveness Best Point, it can just make whole system Energy Efficiency Ratio highest.It is cooling pump coolant-temperature gage and outdoor environment temperature, humidity, cold But the factors such as pump characteristics, heat removal capacity, main frame heat extraction load are relevant, but due to the time-varying of weather conditions and heat extraction load Property, and the change of the characteristic such as cooling pump and main condenser, therefore, traditional control mode or easy Frequency Converter Control side Formula is impossible to the control targe for reaching running efficiency of system optimization.The central air-conditioning variable-flow optimizes system to cooling water system System effectiveness Optimal Control is realized using adaptive fuzzy optimized algorithm.When weather conditions or air conditioning terminal load change When, fuzzy controller is on the premise of Dynamic Forecasting System load, real time data and the empirical data of system that foundation is gathered, According to weather conditions, system performance and adaptive fuzzy optimized algorithm model, by reasoning, required cooling pump water temperature is calculated Optimum value is spent, and the output frequency of cooling pump frequency converter is adjusted with this, control cooling revolution speed, the stream of dynamic regulation cooling pump water Amount, cooling pump coolant-temperature gage is set to level off to the optimal value that fuzzy controller provides, so as to ensure whole central air-conditioning all the time in most Good efficient state operation, system entirety energy consumption are minimum.Central air-conditioning variable-flow optimizes the COP value highests of system root Ju whole system Principle, cooling backwater desired temperature is calculated automatically, it is flat between the dynamic flow and air volume cooling tower for adjusting cooling pump Weighing apparatus, the energy consumption of cooling pump is on the one hand reduced, on the other hand ensure that the energy consumption of main frame does not increase again.
As shown in Figure 4, Figure 5, the design of its central air conditioning fan coil unit control system of online is specific as follows:Tail end of central air conditioner Ventilation and air conditioning system typically there was only the work(of third gear fan speed regulation using the form of Fresh air handling units and fan coil, fan coil Can, without communication networking function;Wind blower coil tube temperature controller is mechanical regulation, and temperature regulating range is larger;Due to installation The reason for, temperature controller is not controlled water valve, causes chilled water to lead directly to coil pipe, causes refrigerator room handpiece Water Chilling Units and chilled water to follow The output increase of ring pump, energy consumption wastes huge.Reality is existed using process generally opens window, and the temperature of temperature controller is set It is very low, there is a situation where " windowing fan the air tune ".For the problem present on, the system be using computer technology as core, Be integrated with electronic technology, automatically control, information gathering with transmission etc. technology Integrated Management Application Platform.Its general principle is logical Cross the service condition that building manager gathers each tail-end blower fan coil pipe equipment, the number that will be collected by ICP/IP protocol mode According to system is transferred to, remote centralized control is carried out by system.System energy consumption measure monitor management system mainly includes 2 big subsystems 4 aspects, i.e. energy consumption data collecting system (including " data source layer ", " data collection layer ", " data transfer layer "), energy consumption meter Measure monitoring management application system (including " data center/terminal ").Surveillance center part is by series of computation machine, server etc. The software systems such as hardware system and operating system, application software are formed, and the data of all monitoring terminals are collected, shown simultaneously Background data base is sent into be analyzed and processed.Communication network part is the bridge of data transfer between Surveillance center and end instrument Beam, will collection layer data by various networks (RF, ADSL, LAN, GPRS, CDMA, 3G ...) platform, be transferred to data center or Person's data relay station.Its capital equipment is building manager, and end instrument part includes a series of temperature controls with transporting function Device etc., system should have centralized and unified managerial ability, be provided significantly conveniently for system administration;Meanwhile according to the management of reality System, system should have multistage centralized and unified administrative center, and implement scientific and reasonable management, monitoring technology is played highest Effectiveness.
The system is mainly made up of end temperature control device, data acquisition unit and data acquisition software system, is completed to end The on-line monitoring and control of running status.End temperature-controlled portion:Using split time type temperature controller as main design object, Mei Gefeng Suitable position at machine coil pipe installs a split time type temperature controller, its quantity according to the quantity of each household indoor fan coil pipe come It is determined that.Split time type temperature controller is used within the system, and the characteristics of its is main is as follows:Possesses conventional blower coil pipe temperature controller institute All functions of possessing, it can control and realize temperature setting and the start and stop shown, third gear wind speed is transferred the files, monitoring running state, far Journey switching on and shutting down, two-way electronic valve switch control etc., plain edition temperature controller can be substituted completely using interconnection type temperature controller.Carry RS485 communication functions, it can upload data with host computer and building control composition networked system and receive host computer instruction.Its The setting of temperature controller switch machine time, temperature setting, temperature range setting can be remotely realized according to administration of energy conservation needs, while can According to regulatory requirement, remote operation temperature controller switch machine, root Ju distributes run time, if run time exceeds, realization shutdown, The control management such as alarm.
In each end by region installation split time type temperature controller (powered electronic puzzle lock), by staff region, general Logical region and key area can monitor in real time, remote control and regulation.Each wind disk is one-to-one to carry out installing split time type temperature controller, can Air-conditioner temperature is set on demand;It can preset on demand the open and close machine time;The load variations and system interlink of end;New fan filter screen set Pressure difference is alarmed;Indoor carbon dioxide concentration set point links with new, exhaust equipment.It is automatic to adjust when there is room air dirt Resh air requirement is saved, increases and decreases rate of ventilation.Meanwhile outdoor need to install Temperature and Humidity device, so as to indoor control reference.Data acquisition With administrative section in each system Nei Douyou buildings manager, its main function is data acquisition, storage and upload for transmission.Lou Dong Manager uses embedded OS, possesses stronger operational capability and opening.And built-in automatic information collecting group Part, information actively can be reported to network according to information change, substitute traditional database repeating query, ensure the real-time delivery of data Meanwhile Data Communication in Computer Networks amount and the burden of central server is greatly reduced, ensure the reliable and stable of central server.Together When, the built-in optional module of storage of building manager, it can be needed to preserve the data of certain time according to user, ensured in communication link During the failure of road, data are not lost, and ensure the integrality of data, continuity to greatest extent.
In summary, the central air-conditioning variable-flow optimize system using computer technology as core, be integrated with electronic technology, from The Integrated Management Application Platform of the technologies such as dynamic control, information gathering and transmission.Using advanced, ripe, practical technology;In technology On require advanced, mature and reliable, requiring simple and practical on, without any tentative product and system application. System should have centralized and unified managerial ability, be provided significantly conveniently for system administration;According to the management system of reality, system should With multistage centralized and unified administrative center, and implement scientific and reasonable management, monitoring technology is played highest effectiveness.System Should have opening, scalability, compatibility and flexibility;So that safely for core, system has opening, it is desirable to which system can be adapted to A variety of scales, there is stronger scalability;The dilatation requirement to system can be adapted at any time.System has very strong compatible and clever Activity, the design of system and the selection of product should standardize, standardize, and system must have security, reliability, fault-tolerance; The security reliability of system equipment is a very important index.To avoid operating personnel's maloperation etc., system is caused to work It is abnormal, it is desirable to which that system has stronger fault-tolerance and self-checking function, has rational cost performance;In system design, from reality Border is set out, and under limited price, pursues highest performance.

Claims (10)

1. a kind of central air-conditioning variable-flow optimizes system, variable-flow optimization system includes refrigeration station computer room, computer, and its pipe The room end of road connection, refrigeration station computer room include refrigeration host computer (1), refrigerating water pump (2), cooling pump (4), water collector (5), divide water Relevant device, the control program of device (6), heat-exchanger pump, and its frequency-conversion control cabinet and signal switch board, computer and computer, with And frequency-conversion control cabinet and signal switch board form fuzzy controller, water knockout drum connection water main, water main and refrigerating water pump The water inlet pipe of the outlet pipe connection of outlet pipe, refrigeration host computer, water collector connection return main, return main and refrigerating water pump connects, Cooling blower (3) connection of the outlet pipe of refrigeration host computer, the water inlet pipe of cooling pump and cooling tower, the outlet pipe and refrigeration of cooling pump The water inlet pipe junction of main frame is provided with cooling valve (9), and the outlet pipe of refrigerating water pump and the outlet pipe junction of refrigeration host computer are provided with cold Freeze valve (8), heat-exchanger pump is connected with water knockout drum, water collector respectively;When room end includes fan coil, building manager and split Between type temperature controller, fan coil is respectively arranged at the air outlet in room, split time type temperature controller, split is respectively equipped with room The circuit of time type temperature controller and fan coil connects, and the floor in room is respectively equipped with building manager, the circuit of fan coil It is connected respectively with building manager, building manager is connected by signal switch board with computer respectively;It is it is characterized in that described Refrigeration host computer (1), cooling pump (2), refrigerating water pump (4), heat-exchanger pump are respectively equipped with dynamic controller, cooling pump dynamic throttling instrument, cold Freeze pump dynamic throttling instrument, heat-exchanger pump dynamic throttling instrument, and be connected respectively by signal switch board with computer;The water knockout drum (6) and each bypass duct of water collector (5) is respectively equipped with electric control valve (7) and temperature sensor, cooling pump and refrigerating water pump difference Provided with flowmeter, differential pressure pickup, temperature sensor, the outlet pipe of refrigeration host computer is provided with temperature sensor, above-mentioned motorized adjustment Valve, temperature sensor, flowmeter, differential pressure pickup, dynamic throttling instrument and dynamic controller pass through signal switch board and meter respectively Calculation machine connects;The computer is analyzed the data of flowmeter, differential pressure pickup, temperature sensor transmission, passes through frequency conversion Frequency converter in switch board to refrigerating water pump, cooling pump, heat-exchanger pump dynamic throttling instrument, and the dynamic controller of refrigeration host computer enters Row control, is controlled by water outlet of the electric control valve to water knockout drum and the water inlet of water collector;Building manager passes through split Temperature in room is adjusted time type temperature controller, and computer is by the circuit of fan coil to split time type temperature controller Temperature be monitored.
2. central air-conditioning variable-flow as claimed in claim 1 optimizes system, it is characterised in that the computer and outdoor setting Temperature and Humidity device connection, according to Temperature and Humidity device transmit data parameters setting room in initial temperature.
3. central air-conditioning variable-flow as claimed in claim 1 optimizes system, it is characterised in that the split time type temperature controller Interconnection type temperature controller is replaced with, interconnection type temperature controller controls the initial temperature of interconnection type temperature controller by computer.
4. central air-conditioning variable-flow as claimed in claim 1 optimizes system, it is characterised in that the cooling pump (2) omits pressure difference Sensor.
5. central air-conditioning variable-flow as claimed in claim 1 optimizes system, it is characterised in that the water collector (5) is omitted electronic Regulating valve (7).
6. central air-conditioning variable-flow as claimed in claim 1 optimizes system, it is characterised in that the temperature of the water knockout drum (6) passes Sensor or one are arranged at water main.
7. central air-conditioning variable-flow as claimed in claim 1 optimizes system, it is characterised in that the flow of the cooling pump (2) Meter, differential pressure pickup, temperature sensor or respectively one be arranged at outfall sewer.
8. central air-conditioning variable-flow as claimed in claim 1 optimizes system, it is characterised in that the flow of the refrigerating water pump (4) Meter, differential pressure pickup, temperature sensor or respectively one be arranged at water inlet manifold.
9. central air-conditioning variable-flow as claimed in claim 1 optimizes system, it is characterised in that the signal switch board passes through nothing Line network signal is connected with notebook computer or mobile phone, and notebook computer and mobile phone are provided with data display program;The building pipe Reason device is connected by wireless network signal with signal switch board.
10. central air-conditioning variable-flow as claimed in claim 1 optimizes system, it is characterised in that the window of the room end is set There is windowing controller, windowing controller is connected by building manager with computer, the computer of computer and corridor information desk Connection.
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