CN106198080A - The performance of refrigerant systems test platform controlled based on PLC - Google Patents
The performance of refrigerant systems test platform controlled based on PLC Download PDFInfo
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- CN106198080A CN106198080A CN201610560957.0A CN201610560957A CN106198080A CN 106198080 A CN106198080 A CN 106198080A CN 201610560957 A CN201610560957 A CN 201610560957A CN 106198080 A CN106198080 A CN 106198080A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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Abstract
The present invention builds a set of performance of refrigerant systems test platform controlled based on PLC, and it includes refrigeration system and electric control system；The C mouth UNICOM of the exhaustor of the frequency-changeable compressor of refrigeration system and cross valve, the D mouth of cross valve passes sequentially through air-cooled condenser, effusion meter, first electromagnetic valve, electric expansion valve, 3rd electromagnetic valve, the B mouth UNICOM of wind-cooled evaporator and cross valve, the A mouth of cross valve and the muffler UNICOM of frequency-changeable compressor, 4th electromagnetic valve is attempted by wind-cooled evaporator and the two ends of the 3rd electromagnetic valve with aluminum wrapped calandria after connecting, second electromagnetic valve is connected with heating power expansion valve and is followed by between air-cooled condenser and wind-cooled evaporator, check valve is in parallel with heating power expansion valve, the anode of check valve is connected with wind-cooled evaporator；The PLC slave computer of electric control system is connected with host computer, and PLC slave computer is connected with each electromagnetic valve, flow transmitter, sensor respectively by execution system.The present invention can be combined multiple refrigeration system.
Description
Technical field
The present invention relates to a kind of performance of refrigerant systems test platform controlled based on PLC.
Background technology
At present, as the training platform of refrigeration experiment room, it is all the principle to refrigeration system and working condition is tested,
And it is unitary system cooling system；As further investigation further to refrigeration system, also need the performance to different refrigeration systems
It is measured, to examine and determine the refrigerating capacity of refrigeration system, efficiency and optimum condition etc..
Summary of the invention
Present invention aim at, build a set of performance of refrigerant systems test platform controlled based on PLC, by power, stream
Amount, humidity, wind speed, temperature etc. measure means, to test the refrigerating capacity of refrigeration system, efficiency, optimum condition etc..
The present invention solves the scheme that its technical problem used:
A kind of performance of refrigerant systems test platform controlled based on PLC, it is characterised in that: include refrigeration system 36 and electricity
Gas control system 35；
Described refrigeration system 36 include frequency-changeable compressor 1, cross valve, air-cooled condenser 3, effusion meter the 6, first electromagnetic valve 9,
Electric expansion valve the 11, second electromagnetic valve 10, heating power expansion valve 13, check valve 12, wind-cooled evaporator 19, the 3rd electromagnetic valve 16,
Four electromagnetic valves 14 and aluminum wrapped calandria 21；
The C mouth UNICOM of the exhaustor of described frequency-changeable compressor 1 and cross valve, the D mouth of described cross valve passes sequentially through air-cooled
Condenser 3, effusion meter the 6, first electromagnetic valve 9, electric expansion valve the 11, the 3rd electromagnetic valve 16, wind-cooled evaporator 19 and the B of cross valve
Mouthful UNICOM, the A mouth of cross valve and the muffler UNICOM of frequency-changeable compressor 1, after the 4th electromagnetic valve 14 is connected with aluminum wrapped calandria 21 and connect
At wind-cooled evaporator 19 and the two ends of the 3rd electromagnetic valve 16, the second electromagnetic valve 10 is connected with heating power expansion valve 13 and is followed by air-cooled cold
Between condenser 3 and wind-cooled evaporator 19, described check valve 12 is in parallel with heating power expansion valve 13, the anode of check valve 12 and air-cooled steaming
Send out device 19 to connect；
Described electric control system 35 includes PLC slave computer, host computer, electric power system, execution system, 3 power pick-ups
The power measurement system of device composition, the speed change system of 3 converter compositions, electronic expansion valve controller 26, several indoor rings
Border temperature sensor, condenser inlet temperature sensor, condensator outlet temperature sensor, several indoor humidity sensors,
Evaporator blowing side air velocity transducer, vaporizer return side air velocity transducer, system high pressure pressure transducer, system low-voltage pressure
Sensor and unit fault sensor；
Described PLC slave computer is connected with host computer, and described PLC slave computer is by performing system and each electromagnetic valve, flow
Transmitter 29, condenser inlet temperature sensor, condensator outlet temperature sensor, indoor environment temperature sensor, indoor wet
Spend sensor, evaporator blowing side air velocity transducer, vaporizer return side air velocity transducer, system high pressure pressure transducer, be
System low-pressure sensor and unit fault sensor connect respectively；
Described PLC slave computer by perform system successively with evaporator fan converter 27, evaporator fan power pick-up
Device 23, the blower motor 20 of wind-cooled evaporator connect, described PLC slave computer by perform system successively with condenser fan frequency conversion
Device 30, condenser fan power transducer 25, the blower motor 4 of air-cooled condenser connect, and described PLC slave computer by execution is
System is connected with compressor variable frequency device, compressor horsepower transmitter 24, frequency-changeable compressor 1 successively, and PLC slave computer is also by performing system
System is directly distinguished with evaporator fan power transducer 23, condenser fan power transducer 25, compressor horsepower transmitter 24
Connect；
Described electronic expansion valve controller 26 is connected with electric expansion valve 11；Described flow transmitter 29 is with effusion meter 6 even
Connect；Condenser inlet temperature sensor and condensator outlet temperature sensor are separately positioned on the cold-producing medium of air-cooled condenser 3 and enter
Mouth end and refrigerant outlet end；Evaporator blowing side air velocity transducer and vaporizer return side air velocity transducer are separately positioned on wind
Cold vaporizer 19 is blown face and wind-cooled evaporator 19 return air face；System high pressure pressure transducer and system low-voltage pressure transducer divide
It is not arranged at frequency-changeable compressor 1 exhaustor and at frequency-changeable compressor 1 muffler.
Preferably, above-mentioned refrigeration system 36 includes the fluid reservoir being also connected between air-cooled condenser 3 and the first electromagnetic valve 9
5 and/or dual flow filter 7 and/or liquid-sighting glass 8.
Above-mentioned wind-cooled evaporator 19 could alternatively be water-cooled vaporizer；Air-cooled condenser 3 could alternatively be water-cooled condenser.
The two ends manually valve of above-mentioned air-cooled condenser 3 is connected in refrigeration system 36, the two of described wind-cooled evaporator 19
End is connected in refrigeration system 36 also by hand-operated valve, and the two ends of described wind-cooled evaporator 19 can also be parallel with other vaporizers,
The two ends of described air-cooled condenser 3 can also be parallel with other condensers.
Above-mentioned cross valve is electronics cross valve, and described PLC slave computer is connected with electronics cross valve by performing system.
It is wound with defrosting electrothermal wire 22 on above-mentioned aluminum wrapped calandria 21.
The two ends of above-mentioned wind-cooled evaporator have also been arranged in parallel standby electricity magnet valve and standby hand-operated valve；The two of air-cooled condenser
End has also been arranged in parallel standby electricity magnet valve and standby hand-operated valve.
The invention have the advantage that the present invention is combined into heating power expansion valve refrigeration system, electronic expansion valve refrigeration system, wind
The pilot system of the multiple refrigerating functions such as cold evaporator refrigeration system, aluminum wrapped calandria refrigeration system, by PLC control, it is achieved compression
Machine frequency conversion, condenser and evaporator fan frequency conversion, electric expansion valve and heating power expansion valve conversion, wind-cooled evaporator and aluminum wrapped calandria turn
Change, and the concrete operating mode such as system electric power, refrigerant flow, average indoor temperature, humidity, wind speed can be measured, the most real
Existing fan evaporator refrigeration system, aluminum wrapped calandria refrigeration system, heating power expansion valve refrigeration system, the work of electronic expansion valve refrigeration system
Condition and operation control and measured performance parameter.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of the present invention；
Wherein: 1-frequency-changeable compressor；2-electronics cross valve；3-air-cooled condenser；The blower motor of 4-air-cooled condenser；5-
Fluid reservoir；6-effusion meter；7-dual flow filter；8-liquid-sighting glass；9-the first electromagnetic valve；10-the second electromagnetic valve；11-electronic expansion
Valve；12-check valve；13-heating power expansion valve；14-the 4th electromagnetic valve；16-the 3rd electromagnetic valve；19-wind-cooled evaporator；20-is air-cooled
The blower motor of vaporizer；21-aluminum wrapped calandria；22-defrosting electrothermal wire；23-evaporator fan power transducer；24-compressor work
Rate transmitter；25-condenser fan power transducer；26-electronic expansion valve controller；27-evaporator fan converter；28-
Compressor variable frequency device；29-flow transmitter；30-condenser fan converter；31-PLC slave computer and the system of execution；32-unit
Fault sensor and protection circuit；33-touch control screen；The various sensor of 34-(temperature/humidity/wind speed/pressure transducer)；
35-electric control system；36-refrigeration system.
Detailed description of the invention
Below in conjunction with the accompanying drawings 1 and embodiment the present invention is further described.
Embodiment 1
A kind of performance of refrigerant systems test platform controlled based on PLC, refrigeration system 36 and electric control system 35.
Described refrigeration system 36 includes frequency-changeable compressor 1, cross valve, air-cooled condenser 3, effusion meter 6, fluid reservoir 5, two-way
Filter 7, liquid-sighting glass the 8, first electromagnetic valve 9, electric expansion valve the 11, second electromagnetic valve 10, heating power expansion valve 13, check valve 12,
Wind-cooled evaporator the 19, the 3rd electromagnetic valve the 16, the 4th electromagnetic valve 14 and aluminum wrapped calandria 21；
The C mouth UNICOM of the exhaustor of described frequency-changeable compressor 1 and cross valve, the D mouth of described cross valve passes sequentially through air-cooled
Condenser 3, fluid reservoir 5, effusion meter 6, dual flow filter 7, liquid-sighting glass the 8, first electromagnetic valve 9, electric expansion valve the 11, the 3rd electromagnetism
The B mouth UNICOM of valve 16, wind-cooled evaporator 19 and cross valve, the A mouth of cross valve and the muffler UNICOM of frequency-changeable compressor 1, the 4th
Wind-cooled evaporator 19 and the two ends of the 3rd electromagnetic valve 16, the second electromagnetic valve 10 and heat it is attempted by after the series connection of electromagnetic valve 14 aluminum wrapped calandria 21
Power expansion valve 13 series connection is followed by between air-cooled condenser 3 and wind-cooled evaporator 19, described check valve 12 and heating power expansion valve 13
Parallel connection, the anode of check valve 12 is connected with wind-cooled evaporator 19；
Cross valve preferred electron cross valve 2, electronics cross valve 2 can also be controlled by electric control system.
The cold-producing medium that fluid reservoir causes because of condensing unit capacity difference when forward and inverse cycle is uneven, it is to avoid refrigeration system
High pressure.When cooling, air-cooled condenser capacity is much larger than evaporator capacity, makes cold-producing medium mistake because of the little meeting of evaporator capacity during defrost
Many, cause pressure at expulsion too high, have the fluid reservoir just can be by unnecessary refrigerant storage.
Effusion meter is the refrigerant flow of pipeline in time testing refrigeration, it is provided that result statistical computation.
Dual flow filter is for filtering the impurity in refrigeration system, it is to avoid the impurity blocking to system.
Liquid-sighting glass is for observing groundwater increment and the refrigerant condition of cold-producing medium in refrigeration system.
Described electric control system includes PLC slave computer, host computer, electric power system, execution system, 3 power transducers
The power measurement system of composition, the speed change system of 3 converter compositions, electronic expansion valve controller, 4 indoor environment temperatures pass
Sensor, condenser inlet temperature sensor, condensator outlet temperature sensor, 2 indoor humidity sensors, evaporator blowing crosswind
Speed sensor, vaporizer return side air velocity transducer, system high pressure pressure transducer, system low-voltage pressure transducer, unit event
Barrier sensor and protection circuit 32；
Described PLC slave computer is connected with host computer touch control screen 33, described PLC slave computer by perform system and each
Electromagnetic valve, flow transmitter 29, condenser inlet temperature sensor, condensator outlet temperature sensor, indoor environment temperature pass
Sensor, indoor humidity sensor, evaporator blowing side air velocity transducer, vaporizer return side air velocity transducer, system high pressure pressure
Force transducer, system low-voltage pressure transducer and unit fault sensor connect respectively；
Described PLC slave computer becomes with evaporator fan converter (27), evaporator fan power successively by performing system
Send device (23), wind-cooled evaporator blower motor (20) connect, described PLC slave computer by perform system successively with condenser wind
Machine converter (30), condenser fan power transducer (25), the blower motor (4) of air-cooled condenser connect, and described PLC is the next
Machine is connected with compressor variable frequency device 28, compressor horsepower transmitter (24), frequency-changeable compressor (1) successively by performing system, PLC
Slave computer also by the system of execution directly and evaporator fan power transducer (23), condenser fan power transducer (25),
Compressor horsepower transmitter (24) connects respectively；
Described electronic expansion valve controller 26 is connected with electric expansion valve 11；Described flow transmitter 29 is with effusion meter 6 even
Connect；Condenser inlet temperature sensor and condensator outlet temperature sensor are separately positioned on the cold-producing medium of air-cooled condenser 3 and enter
Mouth end and refrigerant outlet end；Evaporator blowing side air velocity transducer and vaporizer return side air velocity transducer are separately positioned on wind
Cold vaporizer 19 is blown face and wind-cooled evaporator 19 return air face；System high pressure pressure transducer and system low-voltage pressure transducer divide
It is not arranged at frequency-changeable compressor 1 exhaustor and at frequency-changeable compressor 1 muffler.Humidity sensor divides in the middle of cool room two ends
Cloth；Environment temperature sensor is evenly arranged in cool room.
On the basis of said structure, preferably, the two ends manually valve of described air-cooled condenser 3 is connected on refrigeration system
In 36, the two ends of described wind-cooled evaporator 19 are connected in refrigeration system 36 also by hand-operated valve, and described electric expansion valve 11 passes through
3rd electromagnetic valve 16 is connected with wind-cooled evaporator 19, and described electric expansion valve 11 is by the 4th electromagnetic valve 14 with aluminum wrapped calandria 21 even
Connect；The two ends of described wind-cooled evaporator 19 can also be parallel with other vaporizers, and the two ends of described air-cooled condenser 3 can also be also
It is associated with other condensers.
Preferably, described aluminum wrapped calandria is wound with defrosting electrothermal wire.So system can increase a kind of experiment model, i.e. changes
Frost pattern.
Preferably, unit fault sensor and protection circuit 32 are specially pressure, temperature, phase sequence, cross the protection devices such as stream,
Protection frequency-changeable compressor, the blower fan of vaporizer, the unit parts such as blower fan of condenser are not damaged.
Preferably, the two ends of wind-cooled evaporator have also been arranged in parallel standby electricity magnet valve and standby hand-operated valve；Air-cooled condenser
Two ends be also arranged in parallel standby electricity magnet valve and standby hand-operated valve, can the most external other kind condenser and vaporizers
Carry out testing experiment.So, after system composition, it is not necessary to frequently dismounting and change vaporizer and condenser, it is only necessary to control electromagnetic valve
Opening and closing with standby hand-operated valve can realize quickly selecting switching.
The present embodiment can be combined by electric control system control realization various modes, include but not limited to heat as required
Power expansion valve refrigeration system, electronic expansion valve refrigeration system, wind-cooled evaporator refrigeration system, aluminum wrapped calandria refrigeration system, defrost mould
Formula and multiple combination pattern.
The first mode of operation (heating power expansion valve & wind-cooled evaporator combination refrigeration mode) flow process: in PLC program control
Under, open the second electromagnetic valve the 10, the 3rd electromagnetic valve 16, and close the first electromagnetic valve the 9, the 4th electromagnetic valve 14.Frequency-changeable compressor 1 is high
Temperature gases at high pressure enter the C mouth of electronics cross valve 2 from exhaustor, discharge from D mouth, enter air-cooled condenser 3, sequentially pass through liquid storage
Tank 5, effusion meter 6, dual flow filter 7, liquid-sighting glass the 8, second electromagnetic valve 10, heating power expansion valve the 13, the 3rd electromagnetic valve 16, air-cooled steaming
Send out device 19, electronics cross valve B&A mouth, return in frequency-changeable compressor through compressor muffler, complete a kind of refrigeration cycle.
The control process of electric control system is: carry out model selection by host computer and cryogenic temperature is arranged, this pattern
Program be just selected, PLC can gather 4 environment temperature sensor data, calculates average room temperature；Gather simultaneously and record cold
Condenser enters & outlet temperature, vaporizer enters & air outlet velocity, 2 groups of humidity datas calculate medial humidity, high & low-pressure, cold-producing medium
Flow, frequency-changeable compressor & condenser blower fan & vaporizer blower fan consume electric energy, program will be according to these data, to frequency conversion pressure
Contracting machine, the blower fan of condenser, the rotation speed of fan of vaporizer are adjusted, it is achieved optimal refrigeration.Now, can be according to record
Data are analyzed, and measure various cooling parameters and effect.
The second mode of operation (electric expansion valve & wind-cooled evaporator combination refrigeration mode) flow process: in PLC program control
Under, open the first electromagnetic valve the 9, the 3rd electromagnetic valve 16, and close the 3rd electromagnetic valve the 10, the 4th electromagnetic valve 14.Frequency-changeable compressor 1 is high
Temperature gases at high pressure enter the C mouth of electronics cross valve 2 from exhaustor, discharge from D mouth, enter air-cooled condenser 3, sequentially pass through liquid storage
Tank 5, effusion meter 6, dual flow filter 7,
Liquid-sighting glass the 8, first electromagnetic valve 9, electric expansion valve the 9, the 3rd electromagnetic valve 16, wind-cooled evaporator 19, cross valve B&A
Mouthful, return in frequency-changeable compressor through compressor muffler, complete a kind of refrigeration cycle.
Control process is with the first mode of operation, and now electronic expansion valve controller 26 participates in work, according to suction temperature
Control electric expansion valve with evaporating pressure and work in optimum state.
The third mode of operation (heating power expansion valve & aluminum wrapped calandria combination refrigeration mode) flow process: under PLC program control, beat
Drive the second electromagnetic valve the 10, the 4th electromagnetic valve 14, and close the first electromagnetic valve the 9, the 3rd electromagnetic valve 16.Frequency-changeable compressor 1 high temperature is high
Calm the anger body from exhaustor enter electronics cross valve 2 C mouth, from D mouth discharge, enter air-cooled condenser 3, sequentially pass through fluid reservoir 5,
Effusion meter 6, dual flow filter 7, liquid-sighting glass the 8, second electromagnetic valve 10, heating power expansion valve the 13, the 4th electromagnetic valve 14, aluminum wrapped calandria 21,
Electronics cross valve B&A mouth, returns in frequency-changeable compressor through compressor muffler, completes a kind of refrigeration cycle.
Control process is: carrying out model selection by host computer and cryogenic temperature is arranged, the program of this pattern is just selected,
PLC can gather 4 environment temperature sensor data, calculates average room temperature；Gather simultaneously and record condenser and enter & outlet temperature
Degree, vaporizer enter & air outlet velocity, 2 groups of humidity datas and calculate medial humidity, high & low-pressure, refrigerant flow, frequency conversion compression
The blower fan of machine & condenser consumes electric energy, and the rotation speed of fan of frequency-changeable compressor, condenser will be carried out by program according to these data
Adjust, stop the blower fan of vaporizer, it is achieved optimal refrigeration.Now, can be analyzed according to the data of record, measure various
Cooling parameters and effect.
4th kind of mode of operation (electric expansion valve & aluminum wrapped calandria combination refrigeration mode) flow process: under PLC program control, beat
Drive the 3rd electromagnetic valve the 10, the 4th electromagnetic valve 14, and close the first electromagnetic valve the 9, the 3rd electromagnetic valve 16.Frequency-changeable compressor 1 high temperature is high
Calm the anger body from exhaustor enter electronics cross valve 2 C mouth, from D mouth discharge, enter air-cooled condenser 3, sequentially pass through fluid reservoir 5,
Effusion meter 6, dual flow filter 7, liquid-sighting glass the 8, the 3rd electromagnetic valve 10, heating power expansion valve the 13, the 4th electromagnetic valve 14, aluminum wrapped calandria 21,
Cross valve B&A mouth, returns in frequency-changeable compressor through compressor muffler, completes a kind of refrigeration cycle.
Control process is with the third mode of operation, and now electronic expansion valve controller 26 participates in work, according to suction temperature
Control electric expansion valve with evaporating pressure and work in optimum state.
5th kind of mode of operation (defrost pattern) flow process: under PLC program control, electronics cross valve 2 energising conversion, according to
Front four kinds of mode of operations, respective switch electromagnetic valve the first electromagnetic valve the 9, the 3rd electromagnetic valve the 10, the 4th electromagnetic valve the 14, the 3rd electromagnetic valve
16.Frequency-changeable compressor 1 high temperature and high pressure gas enters the C mouth of cross valve 2 from exhaustor, discharges from B mouth, enters wind-cooled evaporator
19/ aluminum wrapped calandria 21, sequentially passes through electromagnetic valve 16/14, heating power expansion valve 13/ electric expansion valve 11/ check valve 12, liquid-sighting glass 8, double
To filter 7, effusion meter 6, fluid reservoir 5, air-cooled condenser 3, cross valve D&A mouth, return to frequency conversion compression through compressor muffler
In machine, complete a defrost circulation.During electronic expansion valve mode, the aperture of electric expansion valve is maximum.During aluminum wrapped calandria pattern, also may be used
Using electricity-heated defrosting, now refrigeration system quits work.Meanwhile, system is provided with manual defrost switch, can the most at any time
Start defrost pattern.
Whole system can carry out data record to refrigeration, the whole work process of defrost, and be analyzed it, it is achieved to whole
The parametric measurement of individual process of refrigerastion and performance detecting.
Embodiment two
Embodiment two with the difference of embodiment one is: described wind-cooled evaporator could alternatively be water-cooled vaporizer；Air-cooled cold
Condenser could alternatively be water-cooled condenser.Accordingly, evaporator blowing side air velocity transducer and vaporizer return side wind speed sensing
Device replaces with evaporator inlet flow rate of water flow sensor and evaporator outlet flow rate of water flow sensor.
Claims (7)
1. the performance of refrigerant systems test platform controlled based on PLC, it is characterised in that: include refrigeration system (36) and electricity
Gas control system (35)；
Described refrigeration system (36) includes frequency-changeable compressor (1), cross valve, air-cooled condenser (3), effusion meter (6), the first electromagnetism
Valve (9), electric expansion valve (11), the second electromagnetic valve (10), heating power expansion valve (13), check valve (12), wind-cooled evaporator (19),
3rd electromagnetic valve (16), the 4th electromagnetic valve (14) and aluminum wrapped calandria (21)；
The C mouth UNICOM of the exhaustor of described frequency-changeable compressor (1) and cross valve, the D mouth of described cross valve passes sequentially through air-cooled cold
Condenser (3), effusion meter (6), the first electromagnetic valve (9), electric expansion valve (11), the 3rd electromagnetic valve (16), wind-cooled evaporator (19)
With the B mouth UNICOM of cross valve, the muffler UNICOM of the A mouth of cross valve and frequency-changeable compressor (1), the 4th electromagnetic valve (14) is arranged with aluminum
Being attempted by wind-cooled evaporator (19) and the two ends of the 3rd electromagnetic valve (16) after pipe (21) series connection, the second electromagnetic valve (10) is swollen with heating power
Swollen valve (13) series connection is followed by between air-cooled condenser (3) and wind-cooled evaporator (19), described check valve (12) and thermal expansion
Valve (13) is in parallel, and the anode of check valve (12) is connected with wind-cooled evaporator (19)；
Described electric control system (35) includes PLC slave computer, host computer, electric power system, execution system, 3 power transducers
The power measurement system of composition, the speed change system of 3 converter compositions, electronic expansion valve controller (26), several indoor rings
Border temperature sensor, condenser inlet temperature sensor, condensator outlet temperature sensor, several indoor humidity sensors,
Evaporator blowing side air velocity transducer, vaporizer return side air velocity transducer, system high pressure pressure transducer, system low-voltage pressure
Sensor and unit fault sensor；
Described PLC slave computer is connected with host computer, and described PLC slave computer is by performing system and each electromagnetic valve, flow pick-up
Device (29), condenser inlet temperature sensor, condensator outlet temperature sensor, indoor environment temperature sensor, indoor humidity
Sensor, evaporator blowing side air velocity transducer, vaporizer return side air velocity transducer, system high pressure pressure transducer, system
Low-pressure sensor and unit fault sensor connect respectively；
Described PLC slave computer by perform system successively with evaporator fan converter (27), evaporator fan power transducer
(23), the blower motor (20) of wind-cooled evaporator connect, described PLC slave computer becomes with condenser fan successively by performing system
Frequently device (30), condenser fan power transducer (25), the blower motor (4) of air-cooled condenser connect, and described PLC slave computer leads to
Cross execution system to be connected with compressor variable frequency device, compressor horsepower transmitter (24), frequency-changeable compressor (1) successively, PLC slave computer
Direct and evaporator fan power transducer (23), condenser fan power transducer (25), compressor also by the system of execution
Power transducer (24) connects respectively；
Described electronic expansion valve controller (26) is connected with electric expansion valve (11)；Described flow transmitter (29) and effusion meter
(6) connect；Condenser inlet temperature sensor and condensator outlet temperature sensor are separately positioned on the system of air-cooled condenser (3)
Cryogen arrival end and refrigerant outlet end；Evaporator blowing side air velocity transducer and vaporizer return side air velocity transducer set respectively
Put in wind-cooled evaporator (19) air-supply face and wind-cooled evaporator (19) return air face；System high pressure pressure transducer and system low-voltage pressure
Force transducer is separately positioned at frequency-changeable compressor (1) exhaustor and at frequency-changeable compressor (1) muffler.
The performance of refrigerant systems test platform controlled based on PLC the most according to claim 1, it is characterised in that: described system
Cooling system (36) includes the fluid reservoir (5) that is also connected between air-cooled condenser (3) and the first electromagnetic valve (9) and/or two-way mistake
Filter (7) and/or liquid-sighting glass (8).
The performance of refrigerant systems test platform controlled based on PLC the most according to claim 1 and 2, it is characterised in that: described
Wind-cooled evaporator (19) could alternatively be water-cooled vaporizer；Air-cooled condenser (3) could alternatively be water-cooled condenser.
The performance of refrigerant systems test platform controlled based on PLC the most according to claim 1 and 2, it is characterised in that: described
The two ends manually valve of air-cooled condenser (3) is connected in refrigeration system (36), and the two ends of described wind-cooled evaporator (19) also lead to
Crossing hand-operated valve to be connected in refrigeration system (36), the two ends of described wind-cooled evaporator (19) can also be parallel with other vaporizers, institute
The two ends stating air-cooled condenser (3) can also be parallel with other condensers.
The performance of refrigerant systems test platform controlled based on PLC the most according to claim 1 and 2, it is characterised in that: described
Cross valve is electronics cross valve, and described PLC slave computer is connected with electronics cross valve by performing system.
The performance of refrigerant systems test platform controlled based on PLC the most according to claim 1 and 2, it is characterised in that: described
Defrosting electrothermal wire (22) it is wound with on aluminum wrapped calandria (21).
The performance of refrigerant systems test platform controlled based on PLC the most according to claim 1 and 2, it is characterised in that: air-cooled
The two ends of vaporizer have also been arranged in parallel standby electricity magnet valve and standby hand-operated valve；The two ends of air-cooled condenser have also been arranged in parallel standby
With electromagnetic valve and standby hand-operated valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610560957.0A CN106198080B (en) | 2016-07-16 | 2016-07-16 | Performance of refrigerant systems test platform based on PLC controls |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610560957.0A CN106198080B (en) | 2016-07-16 | 2016-07-16 | Performance of refrigerant systems test platform based on PLC controls |
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| CN106198080A true CN106198080A (en) | 2016-12-07 |
| CN106198080B CN106198080B (en) | 2018-04-06 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300263A (en) * | 2017-07-27 | 2017-10-27 | 天津商业大学 | A kind of breakdown of refrigeration system analysis and performance test experiment porch |
| CN108955760A (en) * | 2018-05-23 | 2018-12-07 | 深圳市纳瑞科技有限公司 | A kind of comprehensive test platform of motor |
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| CN104197597B (en) * | 2014-09-22 | 2016-05-11 | 广州天河兰石技术开发有限公司 | Refrigerator heat exchanger performance measure and control device |
| CN104374590B (en) * | 2014-11-13 | 2016-11-02 | 中国电器科学研究院有限公司 | A kind of ability measurement device of four-way change-over valve |
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2016
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| CN107300263A (en) * | 2017-07-27 | 2017-10-27 | 天津商业大学 | A kind of breakdown of refrigeration system analysis and performance test experiment porch |
| CN107300263B (en) * | 2017-07-27 | 2024-01-26 | 天津商业大学 | Refrigerating system fault analysis and performance test experiment platform |
| CN108955760A (en) * | 2018-05-23 | 2018-12-07 | 深圳市纳瑞科技有限公司 | A kind of comprehensive test platform of motor |
| CN110849006A (en) * | 2019-11-12 | 2020-02-28 | 深圳孚沃德斯科技有限公司 | Variable-frequency energy-saving transformation system and method suitable for precision air conditioner of fixed-frequency compressor |
| CN112502959A (en) * | 2020-12-04 | 2021-03-16 | 青岛万宝压缩机有限公司 | Compressor testing device and method |
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| CN114440504A (en) * | 2022-02-14 | 2022-05-06 | 江苏拓米洛环境试验设备有限公司 | Refrigerating system |
| CN116793730A (en) * | 2023-08-24 | 2023-09-22 | 中船重工天禾船舶设备江苏有限公司 | Dual-system condensation amount test equipment for air conditioner condenser |
| CN116793730B (en) * | 2023-08-24 | 2023-12-01 | 中船重工天禾船舶设备江苏有限公司 | Dual-system condensation amount test equipment for air conditioner condenser |
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