CN203323397U - An air source heat pump water heating system based on PLC and MCGS monitoring - Google Patents

An air source heat pump water heating system based on PLC and MCGS monitoring Download PDF

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Publication number
CN203323397U
CN203323397U CN2013203735782U CN201320373578U CN203323397U CN 203323397 U CN203323397 U CN 203323397U CN 2013203735782 U CN2013203735782 U CN 2013203735782U CN 201320373578 U CN201320373578 U CN 201320373578U CN 203323397 U CN203323397 U CN 203323397U
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heat pump
water
hot water
mcgs
air source
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CN2013203735782U
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张甜
吴水彬
杨奕
王天舒
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Jiangsu Tianshu Electric Appliance Co Ltd
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Jiangsu Tianshu Electric Appliance Co Ltd
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Abstract

An air source heat pump hot water system based on PLC and MCGS monitoring relates to a fluid heater utilizing a heat pump, and comprises a heat pump unit, a water tank, a water replenishing pump, a circulating pump, a hot water booster pump, a power distribution cabinet, an MCGS configuration computer and a PLC module; the PLC module is connected to the remote water meter, the liquid level sensor and the temperature sensor; the PLC module is connected with the MCGS configuration computer and used for jointly controlling the water level and the water temperature of a water tank of the heat pump hot water system; the MCGS configuration computer is connected to the electric energy meter to obtain time-interval electric energy consumption data of the heat pump hot water system; the equipment state of the heat pump unit is monitored in real time through the MCGS configuration computer monitoring interface, warning and maintenance prompting signals are displayed, and the equipment operation and the warning state of the heat pump unit are recorded. The energy-saving air source heat pump water heater has the power consumption and water consumption statistical function, realizes the centralized control and energy consumption management of the air source heat pump water heating system, and fully embodies the energy-saving advantage of the air source heat pump.

Description

A kind of air source heat pump hot water system based on PLC and MCGS monitoring
Technical field
The utility model relates to a kind of fluid heater that utilizes heat pump, relates in particular to a kind of air source heat pump hot water system based on PLC and MCGS monitoring.
Background technology
Along with the day by day maturation of air source hot pump water heater development, how controlling air source hot pump water heater has become industrial hot spot.In the intelligent epoch of making rapid progress at this, solar energy industry or air conditioner industry have all trended towards intelligent control, substitute traditional control method in the intelligent control of air source heat pump industry equally imperative.
MCGS (MonitorandControlGeneratedSystem, monitor and control general-purpose system) be a set of configuration software for Fast Construction and generation Monitor Computer Control System, mainly complete processing and the control of the collection of field data and monitoring, front end data, there is perfect in shape and function, easy and simple to handle, visual good, maintainable strong outstanding feature.By the hardware device combination relevant to other, can develop fast, easily the various equipment of processing and controlling for collection in worksite, data.The user only need to just can construct the application system of oneself by simple modularization configuration, as can the various intelligence instruments of flexible configurations, data acquisition module, the special equipments such as recording instrument without paper, unattended collection in worksite station, man-machine interface.The lot of domestic and foreign common equipments such as MCGS supported data analog input card, intelligent object, intelligence instrument, PLC, frequency converter, the network equipment; Support the multiple industry control curves such as temperature control curve, Plan Curve, real-time curve, history curve, XY curve; Support the ODBC interface, can be interconnected with relevant databases such as SQLServer, Oracle, Access; Support OPC interface, DDE interface and OLE technology, can be easily and other various programs and devices interconnect; Provide powerful network data synchronizing, network data base synchronously to build, guarantee a plurality of system perfect adaptations; Perfect network architecture, can support newfangled various communication modes, comprises telephone communication network, broadband communications net, ISDN communication network, GPRS communication network and radio communication network.
Chinese utility model patent " central air-conditioning intelligent temperature and humidity switch board " (Chinese utility model patent ZL201020638333.4, Granted publication CN201903133U) disclose a kind of central air-conditioning intelligent temperature and humidity switch board, it comprises: DDC controller able to programme and expansion module thereof, MCGS touch-screen.Described DDC controller is from different according to purposes in touch-screen, the program of the various application types of corresponding central air-conditioning is housed, also is provided with as required and the end-equipment interfaces such as each Temperature Humidity Sensor, pressure difference switch, differential pressure pickup, Wind speed switch, water valve in described switch board.This utility model is that high-end, professional central air-conditioning is controlled solution, can realize the functional requirement of most of central air-conditioning Temperature and Humidity Control application, system is had form easy, control advanced person, system stability, there are the characteristics of host computer remote networking monitoring function.
Chen Guangqing etc. disclose the heat exchange station monitoring system of a kind of PLC of utilization and MCGS design in " the heat exchange station monitoring system based on PLC and MCGS " (" automated manufacturing " 10 phases in 2010).This control system is carried out Two monitor levels, first floor system adopts the PLC monitoring, the Real-time Collection field data, the ipc monitor interface uses configuration software MCGS to be built, and by the communication between PLC and host computer, connects, can on host computer, monitor in real time for thermal condition, and regulate in time according to field condition, system has also realized warning function, has improved the automaticity that heat exchange station is controlled, reduce operating cost, improved reliability.
But existing air-source heat pump hot water group great majority still adopt operation manually.Control by manual operator following some the inconvenient problem that exists:
1, need the operational administrative personnel to carry out the operation to unit to the air source heat pump scene, operation interface is little, can't be very clear to each major parameter, and the while complex operation.Operate manually the lack of competence restriction, anyone can operate manual operator, and security is not high.
2,, in the situation that the Zai Shuozhuan building need to supply water, manual operator can't be managed concentratedly; Lack the historical record function, can't search the historical data of each parameter.
3, manual operator can't carry out timed power on/off according to water demand, can't be according to the water consumption of every day, and the self-regulating water tank water level.
Although having proposed central air-conditioning MCGS touch-screen, above-mentioned existing system controls, and the monitoring of the heat exchange station based on PLC and MCGS, but all not relating to the air-source heat pump hot water group controls, more do not consider the managing power consumption of air-source heat pump hot water group, therefore these technical schemes are used in the control of air-source heat pump hot water group, can not embody well the energy-conservation advantage of air source heat pump.
The utility model content
The purpose of this utility model is that a kind of air source heat pump hot water system based on PLC and MCGS monitoring will be provided, and adopts the pattern of PLC decentralised control, computer centralized management, solves the centralized Control of air-source heat pump hot water group and the problem of managing power consumption.
The utility model solves the problems of the technologies described above adopted technical scheme:
A kind of air source heat pump hot water system based on PLC and MCGS monitoring, comprise at least two cover source pump, water tank, and small pump, circulating pump, hot water booster pump and power distribution cabinet is characterized in that:
Described air source heat pump hot water system also comprises networking monitoring device; Described networking monitoring device comprises the MCGS configuration computer that is arranged on centralized control room, the PLC module that is arranged on the heat pump hot-water system scene, be connected to the remote transmitting water meter of source pump water pipe, and be arranged on liquid level sensor and temperature sensor in described air source heat pump hot water system;
Described MCGS configuration computer expert crosses the data/address bus translation interface, sets up bi-directional data with described PLC module and is connected, and unit is controlled to parameter and send to the PLC module;
Described PLC module, by being connected to the remote transmitting water meter of water meter interface module, is obtained the system water amount, sends described MCGS configuration computer to;
Described PLC module, by being connected to the liquid level sensor of liquid level interface module, is obtained the water level signal be directly proportional to the height of water level of water tank, sends described MCGS configuration computer to;
Described PLC module, by being connected to the temperature sensor of temperature sensor interface module, is obtained the real time temperature of heat pump hot-water system, sends described MCGS configuration computer to;
Described PLC module is connected to described small pump and circulating pump, and the unit issued according to described MCGS configuration computer is controlled parameter, controls cistern water level and the supply water temperature of heat pump hot-water system.
A kind of preferably technical scheme of air source heat pump hot water system of the present utility model, is characterized in that described hot water booster pump is the freq uency conversion supercharging pump; Described PLC module is connected to frequency converter, controls the start and stop of hot water booster pump according to pipe outlet pressure, regulates the rotating speed of hot water booster pump by frequency converter, realizes the feedwater of frequency conversion hot water.
A kind of better technical scheme of air source heat pump hot water system of the present utility model, it is characterized in that being provided with electric energy meter in described power distribution cabinet, described MCGS configuration computer expert crosses the MODBUS/RTU bus and is connected to described electric energy meter, obtains the power consumption data at times of heat pump hot-water system.
The beneficial effects of the utility model are:
1, the heat pump method for supervising based on PLC and MCGS of the present utility model, and the air source heat pump hot water system that uses above-mentioned heat pump method for supervising, adopt the networking monitoring device of PLC decentralised control, computer centralized management, the heat pump method for supervising of realization based on PLC and MCGS, possesses the statistical function to the energy consumption accumulative total of power consumption and water consumption, can solve the centralized Control of air source heat pump hot water system and the problem of managing power consumption, fully demonstrate the power savings advantages of air source heat pump.
2, heat pump method for supervising and the air source heat pump hot water system thereof based on PLC and MCGS of the present utility model, can be according to the water consumption of every day, the self-regulating water tank water level, this system can also realize the optimum Energy Saving Strategy control of source pump, guaranteeing to utilize the valley electricity hot water preparing under the condition of water consumption at times as far as possible.
The accompanying drawing explanation
Fig. 1 is the air source heat pump hot water system schematic diagram that uses the heat pump method for supervising based on PLC and MCGS of the present utility model;
Fig. 2 is the schematic diagram of the networking monitoring device of air source heat pump hot water system of the present utility model;
Fig. 3 is the PLC module-external interface circuit figure of networking monitoring device;
Fig. 4 is the electric energy meter external interface circuit figure of networking monitoring device;
Fig. 5 is the remote transmitting water meter interface circuit figure of networking monitoring device.
The label of each parts in above figure: 100-air source heat pump hot water system, 111～118-source pump 1～8,120-water tank, the 130-small pump, 140-circulating pump, 150-hot water booster pump, the 151-frequency converter, 160-back-water valve (BWV), 170-drain valve, the 190-power distribution cabinet, 200-networking monitoring device, 210-MCGS configuration computer, the 220-PLC module, 221-temperature sensor interface module, 222-water meter interface module, 223-liquid level interface module, 230-electric energy meter, 240-remote transmitting water meter.
The specific embodiment
In order to understand better technique scheme of the present utility model, below in conjunction with drawings and Examples, describe in detail further.
Networking monitoring device 200 is comprised of host computer, unit mainboard, electric actuating equipment and sensor, host computer is responsible for whole system is monitored in real time, the unit mainboard is connected to heat pump hot-water system by sensor, complete the work such as on-site data gathering and conveying, realize the Multistage Control of system, make to control with better function.Fig. 1 is an embodiment who uses the air source heat pump hot water system of the heat pump method for supervising based on PLC and MCGS of the present utility model, air source heat pump hot water system 100 comprises at least two cover source pump, water tank 120, small pump 130, circulating pump 140, hot water booster pump 150 and power distribution cabinet 190, and for realizing the networking monitoring device 200 of the heat pump method for supervising based on PLC and MCGS.In the embodiment shown in fig. 1, air source heat pump hot water system 100 comprises 8 cover source pump, in figure, uses drawing reference numeral 111～118 to be expressed as respectively unit 1～unit 8.
An embodiment of networking monitoring device 200 as shown in Figure 2, comprise the MCGS configuration computer 210 that is arranged on centralized control room, the PLC module 220 that is arranged on the heat pump hot-water system scene, be connected to the remote transmitting water meter 240 of source pump water pipe, and be arranged on liquid level sensor and temperature sensor in heat pump hot-water system 100; According to the embodiment shown in Fig. 1 and Fig. 2, in the utility model, host computer is for the computer of the MCGS general-purpose version of configuration the Kunlun on-state, referred to as MCGS configuration computer 210.The unit mainboard of the present embodiment is comprised of the FX3U of Mitsubishi series of PLC controller and interface module, is placed in power distribution cabinet 190, is called PLC module 220 in the utility model; As shown in Figure 2, networking monitoring device 200, by PLC module 220, realize system and the communication of MCGS configuration computer 210 and the control of ancillary equipment.The wiring diagram of PLC module 220 and peripheral interface module as shown in Figure 3.
Described MCGS configuration computer 210, by the data/address bus translation interface, is set up bi-directional data with described PLC module 220 and is connected, and unit is controlled to parameter and send to PLC module 220; An embodiment of described data/address bus translation interface is that RS232 turns the USB module, and the RS232 interface of PLC module 220 turns by RS232 the USB interface that the USB module is connected to MCGS configuration computer 210.
PLC module 220, by the remote transmitting water meter 240 that is connected to water meter interface module 222, is obtained the system water amount, and sends MCGS configuration computer 210 to; The present embodiment adopts FX3U-485-BD or FX3U-485ADP module as water meter interface module 222, and remote transmitting water meter 240 utilizes the power supply of 12V Switching Power Supply, and the water usage data that gathers every day is sent to MCGS master interface, and water consumption is monitored.By the statistics water consumption of every day, according to every daily water consumption, automatically control the height of water level in water tank, accomplish just heat how much hot water with how much hot water, to reach further energy-conservation effect.The wiring diagram of remote transmitting water meter 240 as shown in Figure 4.
PLC module 220, by being connected to the liquid level sensor of liquid level interface module 223, is obtained the water level signal be directly proportional to the height of water level of water tank 120, and sends MCGS configuration computer 210 to; The present embodiment adopts FX2N-2AD type simulated input module as liquid level interface module 223, adopt pressure transmitter as liquid level sensor, the 4-20ma analog input signal of pressure transmitter is converted to 12 bit digital value that are directly proportional to height of water level, be sent to the PLC controller, realize the moisturizing operation according to the cistern water level height control system.
PLC module 220 is by being connected to the temperature sensor of temperature sensor interface module 221, obtain the real time temperature of heat pump hot-water system, send MCGS configuration computer 210 to, described real time temperature comprises supply water temperature, environment temperature, water tank temperature and return water temperature; According to the embodiment shown in Fig. 2, adopt the special functional module of FX2N-4AD-PT analog quantity as temperature sensor interface module 221, to amplify from the input signal of four PT100 temperature sensors, and convert the readable data of 12 to, send the PLC controller to, and using the real time temperature data that obtain as the input quantity of PLC, with operation condition relatively, the open command of output unit water pump.
PLC module 220 is connected to small pump 130 and circulating pump 140, and the unit issued according to MCGS configuration computer 210 is controlled parameter, controls cistern water level and the supply water temperature of heat pump hot-water system 100, referring to Fig. 3.
According to the embodiment of the air source heat pump hot water system shown in Fig. 1, hot water booster pump 150 is the freq uency conversion supercharging pump; PLC module 220 is connected to frequency converter 151, controls the start and stop of hot water booster pump 150 according to pipe outlet pressure, regulates the rotating speed of hot water booster pump 150 by frequency converter 151, realizes the feedwater of frequency conversion hot water, referring to Fig. 3.
In the embodiment of air source heat pump hot water system of the present utility model shown in Fig. 1 and Fig. 2, be provided with electric energy meter 230 in power distribution cabinet 190, electric energy meter 230 is preferably the time-sharing electricity meter of configuration MODBUS/RTU bus, MCGS configuration computer 210 is connected to electric energy meter 230 by the MODBUS/RTU bus, obtain the power consumption data at times of heat pump hot-water system 100, can be according to the output demand of power load state and corresponding period, adjust the intermittent duty operating mode of unit, carry out the on off control at times of avoiding peak of power consumption.The MODBUS/RTU communications protocol of utilizing the present embodiment reads the real-time power consumption data of time-sharing electricity meter, through 485 converters, by the real-time power consumption collected, be sent in general-purpose version MCGS and in main interface display, simultaneously by the data query of general-purpose version MCGS, calculate the power consumption that shows the different periods of every day, in order to carry out data analysis in the future.The wiring diagram of electric energy meter 230 as shown in Figure 5.
Air source heat pump hot water system based on PLC and MCGS monitoring of the present utility model, the pattern that adopts PLC decentralised control, computer to manage concentratedly, monitored by MCGS configuration computer 210 and PLC module 220, and its control procedure comprises the following steps:
S100: the authentication of users administration authority operates rank according to the user and enters monitoring system;
S120: by MCGS configuration computer monitor interface, unit is set and controls parameter, described unit is controlled parameter and is comprised the supply water temperature setting value, return water temperature setting value, cistern water level setting value, and timed power on/off time; By the timed power on/off time is set, can set at times the time switch unit according to water consumption and time-of-use tariffs, can also, by the time of switching between primary/standby devices is set, realize the timing switching between master/slave device.
S140:MCGS configuration computer is controlled parameter by unit and is sent to the PLC module;
S160:MCGS configuration computer, according to the historical data of water consumption at times of source pump, is dynamically revised the cistern water level setting value;
S200: by PLC module Real-time Obtaining unit operation parameter, described unit operation parameter comprises supply water temperature, return water temperature, environment temperature, the gentle cistern water level of Water in Water Tank;
S220: control parameter and unit operation parameter according to described unit, by the running status of PLC module controls source pump;
S240: by the start and stop of PLC module controls hot water booster pump 150, regulate the rotating speed of hot water booster pump 150, realize the feedwater of frequency conversion hot water;
S260: by the PLC module, according to water consumption at times, control cistern water level, water consumption according to actual needs is by optimum Energy Saving Strategy start and stop source pump, described optimum Energy Saving Strategy is to guarantee to utilize the valley electricity hot water preparing under the condition of water consumption at times as far as possible;
S300: gather the switching value signal of hot-water heating system by the PLC module, automatically accumulated running time, by electric energy meter and remote transmitting water meter, gather source pump power consumption and water consumption;
S320: by the unit operation parameter of Real-time Obtaining, source pump power consumption and water consumption, be stored in the data unit operation storehouse, realize collection and the storage of data unit operation;
S340: by the equipment state of MCGS configuration computer monitor interface real time monitoring source pump, if any fault, display alarm and repair prompt signal, and record equipment operation and the alarm condition of source pump.
According to another embodiment of the air source heat pump hot water system based on PLC and MCGS monitoring of the present utility model, its control procedure is further comprising the steps of:
S400: inquiry unit operation history data, show unit operation parameter, source pump power consumption and water consumption by MCGS configuration computer monitor circle, and the operation of the equipment of source pump and alarm condition, by the duty of history curve and real-time curve embodiment source pump.
Those of ordinary skill in the art will be appreciated that; above embodiment is only for the technical solution of the utility model is described; and not be used as restriction of the present utility model; any variation of the above embodiment being done based on connotation of the present utility model, modification, all will drop in the protection domain of claim of the present utility model.

Claims (3)

1.一种基于PLC和MCGS监控的空气源热泵热水系统，包括至少两套热泵机组，水箱，补水泵，循环泵，热水增压泵和配电柜，其特征在于：1. An air source heat pump hot water system based on PLC and MCGS monitoring, comprising at least two sets of heat pump units, a water tank, a replenishment pump, a circulating pump, a hot water booster pump and a power distribution cabinet, characterized in that: 所述的空气源热泵热水系统还包括网络化监控装置；所述的网络化监控装置包括设置在集中控制室的MCGS组态电脑、设置在热泵热水系统现场的PLC模块，连接在热泵机组补水管路的远传水表，以及设置在所述空气源热泵热水系统中的液位传感器和温度传感器；The air source heat pump hot water system also includes a networked monitoring device; the networked monitoring device includes an MCGS configuration computer set in the centralized control room, a PLC module set at the site of the heat pump hot water system, connected to the heat pump unit The remote water meter of the water supply pipeline, and the liquid level sensor and temperature sensor set in the air source heat pump hot water system; 所述的MCGS组态电脑通过数据总线转换接口，与所述的PLC模块建立双向数据连接，将机组控制参数发送给PLC模块；The MCGS configuration computer establishes a two-way data connection with the PLC module through a data bus conversion interface, and sends the unit control parameters to the PLC module; 所述的PLC模块通过连接在水表接口模块的远传水表，获取系统用水量，传送给所述的MCGS组态电脑；The PLC module obtains the water consumption of the system through the remote water meter connected to the water meter interface module, and transmits it to the MCGS configuration computer; 所述的PLC模块通过连接在液位接口模块的液位传感器，获取与水箱的水位高度成正比的水位信号，传送给所述的MCGS组态电脑；The PLC module obtains a water level signal proportional to the water level of the water tank through the liquid level sensor connected to the liquid level interface module, and sends it to the MCGS configuration computer; 所述的PLC模块通过连接在温度传感器接口模块的温度传感器，获取热泵热水系统的实时温度，传送给所述的MCGS组态电脑；The PLC module obtains the real-time temperature of the heat pump hot water system through the temperature sensor connected to the temperature sensor interface module, and transmits it to the MCGS configuration computer; 所述的PLC模块连接到所述的补水泵和循环泵，根据所述MCGS组态电脑下发的机组控制参数，控制热泵热水系统的水箱水位和供水温度。The PLC module is connected to the supplementary water pump and the circulation pump, and controls the water level of the water tank and the water supply temperature of the heat pump hot water system according to the unit control parameters issued by the MCGS configuration computer. 2.根据权利要求1所述的空气源热泵热水系统，其特征在于所述的热水增压泵为变频增压泵；所述的PLC模块连接到变频器，依据水管出口压力控制热水增压泵的启停，通过变频器调节热水增压泵的转速，实现变频热水给水。2. The air source heat pump hot water system according to claim 1, characterized in that the hot water booster pump is a variable frequency booster pump; the PLC module is connected to the frequency converter, and the hot water is controlled according to the outlet pressure of the water pipe When the booster pump starts and stops, the speed of the hot water booster pump is adjusted through the frequency converter to realize frequency conversion hot water supply. 3.根据权利要求1或2所述的空气源热泵热水系统，其特征在于所述的配电柜中设有电能表，所述的MCGS组态电脑通过MODBUS/RTU总线连接到所述的电能表，获取热泵热水系统的分时段电能消耗数据。3. The air source heat pump hot water system according to claim 1 or 2, characterized in that the power distribution cabinet is provided with an electric energy meter, and the MCGS configuration computer is connected to the Electric energy meter, to obtain the electric energy consumption data of the heat pump hot water system by time period.
CN2013203735782U 2013-06-24 2013-06-24 An air source heat pump water heating system based on PLC and MCGS monitoring Expired - Fee Related CN203323397U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103277900A (en) * 2013-06-24 2013-09-04 江苏天舒电器有限公司 A PLC-based MCGS heat pump monitoring system and its control method
CN109099500A (en) * 2018-07-06 2018-12-28 山东中瑞新能源科技有限公司 A kind of air source heat pump accumulation of heat control system and method based on big data analysis
CN109634313A (en) * 2018-12-28 2019-04-16 广东顺德禾庄能源科技有限公司 A kind of water level control method of water tank of hot-water heating system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103277900A (en) * 2013-06-24 2013-09-04 江苏天舒电器有限公司 A PLC-based MCGS heat pump monitoring system and its control method
CN103277900B (en) * 2013-06-24 2015-05-20 江苏天舒电器有限公司 MCGS heat pump monitoring system based on PLC and control method thereof
CN109099500A (en) * 2018-07-06 2018-12-28 山东中瑞新能源科技有限公司 A kind of air source heat pump accumulation of heat control system and method based on big data analysis
CN109099500B (en) * 2018-07-06 2020-12-11 山东中瑞新能源科技有限公司 Air source heat pump heat storage control system and method based on big data analysis
CN109634313A (en) * 2018-12-28 2019-04-16 广东顺德禾庄能源科技有限公司 A kind of water level control method of water tank of hot-water heating system

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