CN202814723U - Detection test system for air-conditioning system - Google Patents
Detection test system for air-conditioning system Download PDFInfo
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- CN202814723U CN202814723U CN 201220467686 CN201220467686U CN202814723U CN 202814723 U CN202814723 U CN 202814723U CN 201220467686 CN201220467686 CN 201220467686 CN 201220467686 U CN201220467686 U CN 201220467686U CN 202814723 U CN202814723 U CN 202814723U
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Abstract
The utility model relates to a detection test system for an air-conditioning system. The detection test system comprises a to-be-tested air-conditioning system, a pressure dwelling loop, a vacuum-pumping loop, a refrigerant filling and recycling loop and a control unit. The pressure dwelling loop, the vacuum-pumping loop and the refrigerant filling and recycling loop are in parallel connection with each other and are respectively connected with a low-pressure pipe interface and a high-pressure pipe interface of the to-be-tested air-conditioning system via connecting pipes. All the loops are in series connection with solenoid valves used for controlling the loops to be on and off. The solenoid valves are connected with the control unit. According to the detection test system, functions of pressure dwelling, vacuum pumping, recycling, refrigerant filling and the like of the air-conditioning system are combined together. The detection test system allows devices to be minimized, is convenient to operate, enables automatic control to be realized, and enables accuracy of detection data about pressure dwelling, vacuum pumping, refrigerant recycling and filling of the air-conditioning system to be improved.
Description
Technical field
The utility model relates to a kind of air-conditioning system, particularly a kind of be directed to the air-conditioning system of various rail vehicles carry out pressurize, vacuumize, refrigerant-recovery and filled air-conditioning system detect pilot system.
Background technology
The pressurize of motor train unit air-conditioning system, vacuumize, charging refrigerant is the key that guarantees air-conditioning equipment safety, normal operation, motor train unit air-conditioning system dwell pressure value, the vacuum tightness that vacuumizes are the keys that guarantees motor train unit air-conditioning system regular event.
After the railway vehicle air conditioner systems (comprising air-conditioning unit and pipeline) such as present motor train unit install, carry out system's pressurize, vacuumize, remaining refrigerant-recovery, new refrigerant fill process, to guarantee that the system pipeline effective sealing is not revealed and internal refrigeration storage agent cleaning.
Present motor train unit air-conditioning system pressurize, vacuumize, refrigerant-recovery, the process that fills all separately carry out.During the system pipeline pressurize, with connecting pipe nitrogen cylinder, tensimeter are communicated with system pipeline, after nitrogen pressure reaches requirement, manual-lock nitrogen meter valve, initiation pressure detects.And the hand filling record sheet, after pressurize is finished, lay down nitrogen cylinder, again adapter is received on the vacuum pump, pipeline is vacuumized, reach vacuum tightness after, close vacuum pump, keep vacuum tightness at the appointed time, and hand-kept vacuum tightness.After the completion air-conditioning system is carried out refrigerant charging, measure charging amount with electronic scale, manually stop to fill after reaching requirement.
Above-mentioned pressurize, the technology such as vacuumize, fill and have following problem: the one, use equipment is many, need nitrogen cylinder, vacuum pumping pump and pressure meter device, refrigerant charging, recycling can, electronic scale etc., system carries out pressurize, vacuumizes, refrigerant agent reclaims, equipment conveying is cumbersome when filling; The 2nd, system's pressurize, vacuumize, refrigerant-recovery, fill and can not disposablely finish, the emptying nitrogen of intermediate demand, disassembling fixture, mounting tool multi-pass operations, the 3rd, test parameters (such as dwell pressure and time, evacuated pressure and time, refrigerant charge etc.), need manual control, the data human factor is large, and precision is low.
The utility model content
The utility model fundamental purpose is to address the above problem and is not enough, provides that a kind of equipment is simplified, air-conditioning system easy to operate, that accuracy of detection is high detects pilot system.
For achieving the above object, the technical solution of the utility model is:
A kind of air-conditioning system detects pilot system, comprise tested air-conditioning system, pressure dwelling loop, vacuumize the loop, refrigerant charging reclaims loop and control module, described pressure dwelling loop, vacuumize loop and refrigerant charging and reclaim the loop low-voltage tube interface by connecting pipe and described tested air-conditioning system parallel with one another and high-voltage tube interface and be connected respectively, all be serially connected with the solenoid valve for the control loop break-make on described each loop, each described solenoid valve is connected with described control module.
Further, described pressure dwelling loop comprises nitrogen cylinder, described nitrogen cylinder is connected with described connecting pipe by the pressurize pipeline, and the pressurize solenoid valve that is used for the pilot piping break-make is serially connected in described pressurize pipeline, also branches out one and be used for emptying pressurize bleeder pipe on the pipeline that described connecting pipe connects.
Further, the described loop that vacuumizes comprises vacuum pump, and described vacuum pump is connected with described connecting pipe by vacuum line, and the vacuum solenoid that is used for the pilot piping break-make is serially connected in described vacuum line.
Further, described refrigerant charging reclaims the loop and comprises that condensation loop, gas refrigerant for condensating refrigerant fills filled bottle and returnable bottle that pipeline, liquid refrigerant fill pipeline, reclaim line, are used for the storage cold-producing medium, described gas refrigerant fills pipeline and is connected reclaim line and all is connected with described connecting pipe by described condensation loop again, described liquid refrigerant fills pipeline and directly is connected with described connecting pipe, is serially connected with the solenoid valve for the pilot piping break-make in the filled pipeline of described gas refrigerant, the filled pipeline of liquid refrigerant, reclaim line.
Further, described condensation loop comprises compressor, oil separator, condenser and the four-way change-over valve that is connected successively by pipeline.
Further, in described condensation loop, be serially connected with filtrator.
Further, described filled bottle and returnable bottle are connected with respectively be used to the electronic scales of weighing.
Further, described filled bottle and returnable bottle are connected with respectively for emptying evacuated tube.
Further, described pressure dwelling loop, vacuumize that the loop is reclaimed in loop, refrigerant charging and control module is integrated in the casing, described connecting pipe, pressurize pipeline are provided with connecting interface at described casing.
Content to sum up, air-conditioning system described in the utility model detects pilot system, pressurize with air-conditioning system, vacuumize, reclaim, the functions such as charging refrigerant are in one, by each action of solenoid valve open and close controlling, finish the pressurize of motor train unit air-conditioning system, vacuumize, refrigerant-recovery, fill and detect the full automatic working of each function, equipment is simplified, easy to operate, by control module to the air-conditioning system pressurize, evacuated pressure and time, to refrigerant-recovery, charging amount is controlled and is detected, and improves the air-conditioning system pressurize, vacuumize, refrigerant-recovery, fill the accuracy that detects data.
Description of drawings
Fig. 1 is the utility model fundamental diagram;
Fig. 2 is the utility model test platform structure synoptic diagram;
Fig. 3 is that the A of Fig. 2 is to view.
As shown in Figure 1 to Figure 3, tested air-conditioning system 1, pilot system 2, low-voltage tube interface 3, high-voltage tube interface 4, low-pressure connection tube 5, high-pressure connecting pipe 6, nitrogen cylinder 7, pressurize pipeline 8, pressurize bleeder pipe 9, vacuum pump 10, vacuum line 11, total connecting pipe 12 fills bottle 13, and liquid refrigerant fills pipeline 14, and gas refrigerant fills pipeline 15, compressor 16, oil separator 17, filtrator 18, pressure controller 19, fill evacuated tube 20, scavenge pipe 21, safety valve 22, returnable bottle 23, reclaim line 24, condenser 25, condensation fan 26 reclaims evacuated tube 28, safety valve 29, display 30 fills bottle electronic scales panel 31, returnable bottle electronic scales panel 32, casing 33, movable pulley 34, handle 35, electronic scales 36, electronic scales 37, liquid-sighting glass 38, kapillary 39, four-way change-over valve 40, gauge tap 41.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As shown in Figure 1, a kind of air-conditioning system detects pilot system, comprises tested air-conditioning system 1 and pilot system 2, comprises pressure dwelling loop in the pilot system 2, vacuumizes the loop, refrigerant charging reclaims loop and control module.Pressure dwelling loop, vacuumize loop, refrigerant charging and reclaim loop connection parallel with one another, separately complete independently system pressurize, vacuumize, refrigerant charging and refrigerant-recovery, the steps such as the cleaning of system pipeline.
Wherein, tested air-conditioning system 1 has low-voltage tube interface 3 and high-voltage tube interface 4, and pilot system 2 is connected with high-pressure connecting pipe to be connected with the high-voltage tube interface with low-voltage tube interface 3 respectively by low-pressure connection tube 5 and is connected.
Be used for the solenoid valve DF4A of control low-pressure connection tube 5 break-makes and for detection of the pressure transducer B1 of line pressure in low-pressure connection tube 5 serial connection one, be used for the kapillary 39 of cold-producing medium throttling and the pressure transducer B2 of signal piping pressure in high-pressure connecting pipe 6 serial connections one, low-pressure connection tube 5 is connected with high-pressure connecting pipe and is converged into total connecting pipe 12 after the parallel connection and be connected with the pipeline in other loop, at the electrical ball valve DF3 of total connecting pipe 12 serial connections one control break-make and for the stop valve JF2 that manually disconnects, this hand stop valve JF2 can be manually with low-pressure connection tube 5 in needs, high-pressure connecting pipe 6 disconnects with each loop of back.Electrical ball valve DF3, solenoid valve DF4A, pressure transducer B1, pressure transducer B2 all are connected with control module.Between low-pressure connection tube 5 and high-pressure connecting pipe 6, be intersection and be provided with four retaining valve DXF1, DXF2, DXF3, DXF4, with the flow direction of gas or liquid in the restriction pipeline.
Pressure dwelling loop comprises nitrogen cylinder 7, nitrogen cylinder 7 is connected the total connecting pipe 12 that converges into by pressurize pipeline 8 and low-pressure connection tube 5 and is connected with high-pressure connecting pipe, serial connection is used for pressurize solenoid valve DF1, the pressure transducer B7 for detection of pressure, the retaining valve DXF5 of pilot piping break-make on the pressurize pipeline 8, and pressurize solenoid valve DF1, pressure transducer B7 are connected with control module.
Also branch out a pressurize bleeder pipe 9 on the total connecting pipe 12 that between pressurize pipeline 8 and low-pressure connection tube 5 and high-pressure connecting pipe 6, is connected, be provided with pressure-releasing electromagnetic valve DF10 in the port of pressurize bleeder pipe 9, pressure-releasing electromagnetic valve DF10 is communicated with atmosphere and is connected with control module.After pressurize finishes, pressure-releasing electromagnetic valve DF10 opens, all be disposed to the nitrogen in tested air-conditioning system 1 pipeline in the atmosphere, be connected in series again a retaining valve DXF7 in the porch of pressure-releasing electromagnetic valve DF10, retaining valve DXF7 is to the conducting of pressure-releasing electromagnetic valve DF10 direction, can avoid extraneous air to enter in the tested air-conditioning system 1 by pressure-releasing electromagnetic valve DF10 and pipeline, to guarantee accuracy of detection, a manual stop valve JF3 is set on pressurize bleeder pipe 9 again.
Vacuumize the loop and comprise vacuum pump 10, vacuum pump 10 is connected the total connecting pipe 12 that converges into by vacuum line 11 and low-pressure connection tube 5 and is connected with high-pressure connecting pipe, vacuum line 11 is connected in parallel on total connecting pipe 12 with pressurize pipeline 8 and pressurize bleeder pipe 9, the vacuum solenoid DF2 that is used for control vacuum line 11 break-makes is serially connected in vacuum line 11, the porch that is positioned at vacuum solenoid DF2 at vacuum line 11 is connected in series a retaining valve DXF6, retaining valve DXF6 is to vacuum pump 10 direction conductings, can avoid extraneous air to enter in the tested air-conditioning system 1 by vacuum pump 10 and pipeline, to guarantee the vacuum tightness of system.Vacuum pump 10, vacuum solenoid DF2 are connected with control module.
Refrigerant charging reclaims the loop and comprises filled bottle 13 and returnable bottle 23 for the storage cold-producing medium, because what fill that bottle 13 and returnable bottle 23 deposit mainly is liquid refrigerant, so refrigerant charging and removal process are mainly carried out filling and reclaiming of liquid refrigerant.In the automatic filling process, system default is that liquid refrigerant fills, when filled bottle 13 interior liquid fill quantity not sufficients, when not satisfying tested air-conditioning system 1 charging amount requirement, automatically enter the filled process of pressure equilibrium process and gas refrigerant, until charging amount satisfies till the testing requirements.So, refrigerant charging recovery loop also comprises the condensation loop for the condensed gas cold-producing medium, gas refrigerant fills pipeline 15 and is connected with reclaim line all and is connected with total connecting pipe 12 by the condensation loop, liquid refrigerant fills pipeline 14 and directly is connected with total connecting pipe 12, and gas refrigerant fills connection parallel with one another between pipeline 15, reclaim line 24, the filled pipeline 14 of liquid refrigerant.
The two ends that liquid refrigerant fills pipeline 14 connect respectively filled bottle 13 and total connecting pipe 12, fill pipeline 14 at liquid refrigerant and are serially connected with liquid fill solenoid valve DF5, a retaining valve DXF8 for the control break-make.
Gas refrigerant fills the end connection condensation loop of pipeline 15, and the other end connects filled bottle 13, fills pipeline 15 at gas refrigerant and is serially connected with for gas charge solenoid valve DF6, the retaining valve DXF9, the pressure transducer B5 that control break-make.
One end of reclaim line 24 connects the condensation loop, and the other end connects returnable bottle 23, is serially connected with for recovery solenoid valve DF4B, the retaining valve DXF12, the pressure transducer B6 that control break-make in reclaim line 24.
The condensation loop comprises compressor 16, oil separator 17, condenser 25 and the four-way change-over valve 40 that is connected successively by pipeline, and 25 places arrange condensation fan 26 at condenser.The outlet of compressor 16 connects oil separator 17, oil separator 17 is for separating of the compressor oil in the refrigerant gas, each cut-in pressure sensor B3 and B4 in the two ends pipeline of compressor 16, air inlet and discharge pressure for detection of compressor 16, on compressor 16, also access compressor pressure controller 19, be connected to solenoid valve DF9 between the air inlet of compressor 16 and the exhaust, between the outlet of oil separator 17 and compressor 16, be provided with scavenge pipe 21, be provided with solenoid valve DF13 at scavenge pipe 21.The port one of four-way change-over valve 40 is connected with total connecting pipe 12, the port 2 of four-way change-over valve 40 is connected with the air intake opening of compressor 16,3 minutes two-way of the port of four-way change-over valve 40 are connected with gas filler line road with reclaim line 24 respectively and are connected, and the port 4 of four-way change-over valve 40 is connected with the outlet of condenser 25.
The pipeline that connects between condenser 25 and four-way change-over valve 40 arranges a filtrator 18, is used for filtering cold-producing medium, is provided with hand stop valve JF5 and JF4 at the two ends of filtrator 18, is used for the hand off pipeline, so that periodic replacement filtrator 18.
The condensation loop fills between the pipeline 14 with liquid refrigerant and is connected with DXF11 with DF7B and two retaining valve DXF10 by two solenoid valve DF7A, is used for controlling the refrigerant flow direction when filling and reclaiming.
Be connected the pipeline that pipeline 14 is connected in total connecting pipe 12 and condensation loop with liquid refrigerant and be serially connected with liquid-sighting glass 38, electrical ball valve DF8 and stop valve JF1.The effect of liquid-sighting glass 38 is when cold-producing medium fills and reclaim, and can observe intuitively the filled state of cold-producing medium.
Be warranty test safety, be provided with a safety valve 22 at filled bottle 13, be provided with a safety valve 29 at returnable bottle 23.Fill bottle 13 and link to each other with electronic scales 36, weighed by electronic scales 36, and then control charging amount.Returnable bottle 23 links to each other with electronic scales 37, weighed by electronic scales 37, and then the control yield.Electronic scales 36 is connected with electronic scales and all is connected with control module.
Control module comprises industrial computer and controller, and control module is according to the pressure control of the switch of each solenoid valve in the test needs control test system 2, each process and time etc.Comprise display 30, printer etc. in the industrial computer, has operation interface on the display 30, can set test condition for operating personnel, in addition, with the line pressure real time record of tested air-conditioning system 1, and at the relevant pressure curve of display demonstration, carry out data analysis for operating personnel, after test is finished, tested air-conditioning system 1 pipeline pressurize, evacuated pressure curve can be accessed at any time, output and the printing of data can be carried out as requested simultaneously.
When carrying out the system pipeline pressurize, can set dwell time, pressurize desired value maximal value, minimum value, pressure surge value, data acquisition interval time etc. by operation interface.In pressure maintaining period, in each data acquisition constantly, when pressure changes above the regulation undulating quantity, automatic alarm module meeting automatic alarm in the control module, automatic alarm can be by audible alarms such as hummers, also can be on display 30 display alarm information, can also report to the police by the mode of signal lamp flicker.
Carry out system when vacuumizing, can set vacuum tightness desired value maximal value and minimum value, vacuum keep time, fluctuation vacuum value, data acquisition time interval etc. by operation interface.In the vacuum test process, in each data acquisition constantly, when vacuum tightness changed above the regulation undulating quantity, automatic alarm supervised staff's find problem also to repair.Vacuum tightness unit can be at Microns, PSI, and InHg, mBar, PascaIs, Torr switches between mTorr.
Comprise that in control module filling bottle electronic scales panel 31 is connected with 37 with two electronic scaless 36 respectively with returnable bottle electronic scales panel 32, is used for the weight that fills bottle 13 and returnable bottle 23 that shows directly perceived.
As shown in Figures 2 and 3, for the ease of operation, in the present embodiment, with equal integrated being arranged in the casing 33 of equipment all in the pilot system 2, be provided with the connecting interface of low-pressure connection tube 5, high-pressure connecting pipe 6, pressurize pipeline 8 in a side of casing 33, be used for being connected with nitrogen cylinder with tested air-conditioning system 1 being connected.Display 30, a filled bottle electronic scales panel 31, returnable bottle electronic scales panel 32, gauge tap 41, various hand stop valves etc. all are arranged on the table top of casing 33, operate and intuitively observe for operating personnel.
Be provided with movable pulley 34 in the bottom of casing 33, be provided with the handle 35 that promotes casing 33 in a side of casing 33, operating personnel can be pushed into suitable testing position with pilot system 2 arbitrarily as required.For easy to operate, in the present embodiment, will all adopt flexible pipe with tested air-conditioning system 1, nitrogen cylinder 7, returnable bottle 23, filled bottle 13 pipelines that are connected.
As shown in Figure 1, the below describes process of the test in detail.
One, system pipeline pressurize step:
Open pressurize solenoid valve DF1 and electrical ball valve DF3 by control module, nitrogen in the nitrogen cylinder 7 is successively by retaining valve DXF5, solenoid valve DF1, electrical ball valve DF3 and stop valve JF2, leading up to retaining valve DXF1, low-pressure connection tube 5 and low-voltage tube interface 3 enters tested air-conditioning system 1, simultaneously, another road enters tested air-conditioning system 1 by retaining valve DXF2, kapillary 39, high-pressure connecting pipe 6 and high-voltage tube interface 4.
Pressure in pressure transducer B1, pressure transducer B2 and the pressure transducer B7 signal piping and to the control module feedback signal, when reaching testing requirements, control module control pressurize solenoid valve DF1, electrical ball valve DF3 close, and system begins to enter packing state.Have the time relay in the control module, the time relay begins timing, the control dwell time.When control module confirms that the dwell time reaches testing requirements, control module sends signal, control again electrical ball valve DF3, pressure-releasing electromagnetic valve DF10, low-voltage solenoid valve DF4A opens, under the restriction of retaining valve DXF1 and retaining valve DXF2, the nitrogen in the tested air-conditioning system 1 discharges by low-voltage tube interface 3, low-pressure connection tube 5, retaining valve DXF3, low-voltage solenoid valve DF4A, stop valve JF2, electrical ball valve DF3, stop valve JF3, retaining valve DXF7 and pressure-releasing electromagnetic valve DF10.This process need is closed the solenoid valve in other loop.Tested air-conditioning system 1 Pressure Drop is during to atmospheric pressure state, and pressurize is finished, and system enters next work step automatically.
When carrying out the system pipeline pressurize, can set dwell time, pressurize desired value maximal value, minimum value, pressure surge value, data acquisition interval time etc. by operation interface.In pressure maintaining period, in each data acquisition constantly, pressure transducer B7 is at any time to control module feedback data information, whether the pressurize of control module automated decision system is qualified, when pressure changes above the regulation undulating quantity, be sealing detection when defective, the automatic alarm module in the control module can automatic alarm, reminds the operator to search leakage point and repairs.
With the pressure real time record in tested air-conditioning system 1 pipeline, and draw out the dwell pressure curve by industrial computer, pressure curve shows by display 30.After the pressurize test is finished, can access at any time tested air-conditioning system 1 pipeline dwell pressure curve by industrial computer, can carry out related data simultaneously and print.
Two, system pipeline vacuumizes step:
When system pipeline vacuumizes, do not need to change any frock, industrial computer automatically switches to system and vacuumizes pattern.In the vacuum test process, vacuum solenoid DF2, electrical ball valve DF3, low-voltage solenoid valve DF4A open unlatching, start simultaneously vacuum pump 10.Air in the tested air-conditioning system 1 enters vacuum pump 10 by low-voltage tube interface 3, low-pressure connection tube 5, retaining valve DXF3, low-voltage solenoid valve DF4A, stop valve JF2, electrical ball valve DF3, vacuum solenoid DF2, retaining valve DXF6.
When vacuumize finish after, system enters next work step automatically.
When system vacuumizes, can set vacuum tightness desired value maximal value and minimum value, vacuum keep time, fluctuation vacuum value, data acquisition time interval etc. by operation interface.In the vacuum test process, in each data acquisition constantly, pressure transducer B1 and pressure transducer B2 are at any time to control module feedback data information, whether control module automated decision system vacuum tightness is qualified, when vacuum tightness changes above the regulation undulating quantity, automatic alarm module meeting automatic alarm in the control module is supervised staff's find problem and reparation.
Vacuum tightness unit can be at Microns, PSI, and InHg, mBar, PascaIs, Torr switches between mTorr.
With the pressure real time record in tested air-conditioning system 1 pipeline, and draw out the evacuated pressure curve by industrial computer, pressure curve shows by display 30.After vacuumizing test and finishing, can access at any time tested air-conditioning system 1 pipeline evacuated pressure curve by industrial computer, can carry out simultaneously related data and print.
Three, refrigerant charging step:
Possess and manually fill and two kinds of functions of automatic filling.When manually filling, the electronic scales 36 that fills bottle 13 connects LCD display, and the operator looks into by sight and fills bottle 13 weight LCD display control refrigerant charge.During automatic filling, system pressure equilibration time before can setting refrigerant type and fill weight and gas charge by operation interface, and pass through to fill bottle electronic scales panel 31 and observe charging amount.
The automatic filling process comprises liquid fill and two stages of gas charge; when the liquid fill amount does not satisfy the charging amount requirement; automatically enter pressure equilibrium process and gas charge process, auto stop when filled weight reaches requirement shows " finishing " prompting at operation interface.
In the liquid fill process, liquid fill solenoid valve DF5, electrical ball valve DF8, electrical ball valve DF3 opens, because this moment, tested air-conditioning system 1 pipeline was in vacuum state, fill the pressure that bottle 13 interior pressure are higher than tested air-conditioning system 1 pipeline, the liquid refrigerant that fills in the bottle 13 passes through liquid fill solenoid valve DF5 automatically successively, retaining valve DXF8, liquid-sighting glass 38, electrical ball valve DF8, stop valve JF1, electrical ball valve DF3, stop valve JF2, lead up to again retaining valve DXF1, low-pressure connection tube 5 and low-voltage tube interface 3 enter tested air-conditioning system 1, simultaneously, another road is by retaining valve DXF2, kapillary 39, high-pressure connecting pipe 6 and high-voltage tube interface 4 enter tested air-conditioning system 1, finish filling of liquid refrigerant.
After filling a period of time, fill the pressure decreased in the bottle 13, be in equilibrium state with pressure in tested air-conditioning system 1 pipeline, fill liquid refrigerants in the bottle 13 and can evaporate and become gaseous refrigerant, at this moment, beginning gas charge process.
In the gas charge process, compressor 16, condensation fan 26 work, solenoid valve DF7A, gas charge solenoid valve DF6, electrical ball valve DF8, electrical ball valve DF3 open.Gas refrigerant is successively by gas charge solenoid valve DF6, retaining valve DXF9 enters the STF3 mouth of four-way change-over valve 40, four-way change-over valve 40 gets electric at this moment, gas refrigerant enters compressor 16 by the STF2 mouth outflow of four-way change-over valve 40 again, gas refrigerant is compressed into the state of High Temperature High Pressure, enter condenser 25 by oil separator 17 again, gas refrigerant is condensed into liquid refrigerant in condenser 25, liquid refrigerant is through filtrator 18, enter again the STF4 mouth of four-way change-over valve 40, flow out from the STF1 mouth of four-way change-over valve 40, through solenoid valve DF7A, retaining valve DXF10, liquid-sighting glass 38, electrical ball valve DF8, stop valve JF1, electrical ball valve DF3, stop valve JF2, lead up to again retaining valve DXF1, low-pressure connection tube 5 and low-voltage tube interface 3 enter tested air-conditioning system 1, simultaneously, another road is by retaining valve DXF2, kapillary 39, high-pressure connecting pipe 6 and high-voltage tube interface 4 enter tested air-conditioning system 1, finish filling of gas refrigerant, reach requirement until fill weight.
Four, refrigerant-recovery step:
Select refrigerant type by operation interface.
In the refrigerant-recovery process, compressor 16, condensation fan 26 work, low-voltage solenoid valve DF4A, electrical ball valve DF3, electrical ball valve DF8, solenoid valve DF7B, recovery solenoid valve DF4B open.At this moment, pressure in the returnable bottle 23 is lower than the pressure in the tested air-conditioning system 1, cold-producing medium in the tested air-conditioning system 1 is successively by low-voltage tube interface 3, low-pressure connection tube 5, retaining valve DXF3, low-voltage solenoid valve DF4A, stop valve JF2, electrical ball valve DF3, stop valve JF1, electrical ball valve DF8, liquid-sighting glass 38, solenoid valve DF7B, retaining valve DXF11 enters the STF1 mouth of four-way change-over valve 40, this moment four-way change-over valve 40 dead electricity, cold-producing medium is flowed out by the STF2 mouth of four-way change-over valve 40, enter compressor 16, gas refrigerant is compressed into the state of High Temperature High Pressure, enter condenser 25 by oil separator 17 again, gas refrigerant is condensed into liquid refrigerant in condenser 25, liquid refrigerant is through filtrator 18, enter again the STF4 mouth of four-way change-over valve 40, flow out from the STF3 mouth of four-way change-over valve 40, through retaining valve DXF12, reclaiming solenoid valve DF4B is recycled in the returnable bottle 23.
The weight of returnable bottle 23 is weighed by electronic scales 37, and observes yield by returnable bottle electronic scales panel 32.When the weight of returnable bottle 23 did not change in 4 minutes, think reclaim complete, or when the weight of returnable bottle 23 reach maximum weight 80% the time, stop recovery, at control desk alarm is arranged.
Five, will fill the interior emptying step of gas of bottle:
Open and fill emptying solenoid valve DF11, stop valve JF6, the not solidifying refrigerant gas that fills in the bottle 13 is emptying.
Six, the step that the gas in the returnable bottle is emptying:
Open and reclaim emptying solenoid valve DF12 and stop valve JF8, the not solidifying refrigerant gas in the returnable bottle 23 is emptying.
Seven, the cleaning step of pipeline in the pilot system:
1) control solenoid valve DF7A, solenoid valve DF7B, electrical ball valve DF8, solenoid valve DF9, pressure-releasing electromagnetic valve 10 are opened, and the cold-producing medium in the pipeline is emitted.
2) control vacuum solenoid DF2, solenoid valve DF7A, solenoid valve DF7B, electrical ball valve DF8, solenoid valve DF9 open, and start simultaneously vacuum pump 10, and pipeline is vacuumized.
3) again electrical ball valve DF8 is closed, continue to open vacuum solenoid DF2, pipeline is proceeded to vacuumize.
4) control liquid fill solenoid valve DF5, gas charge solenoid valve DF6, solenoid valve DF9, solenoid valve DF7A, solenoid valve DF7B open, charging refrigerant in the pipeline.
5) then repeat the discharging of above-mentioned cold-producing medium and pipeline and vacuumize step, again the second time charging refrigerant in the pipeline, with this pipeline is cleaned.
Air-conditioning system described in the present embodiment detects pilot system and test method, compared with prior art, has following advantage:
(1) equipment is simplified, and only needs to use that refrigeration system detects that testing table can be finished the pressurize of motor train unit air-conditioning system, vacuumizes, refrigerant-recovery, fills and detect, and transports more convenient.
(2) easy to operate, connect flexible pipe before only need to be before system's operation, the centre does not need any frock of dismounting, can once finish the air-conditioning system pressurize, vacuumizes, refrigerant-recovery, filled function.
(3) the equipment operation avoids manually producing maloperation by computer program control, and pressure is detected by sensor simultaneously, and digital instrumentation shows data, and is more accurate than manual observation tensimeter.
(4) Output rusults is more concrete in detail, and not only output pressure changes, and real-time curve that can output pressure, makes things convenient for post analysis, and experimental data can not artificially revise, and has guaranteed the authenticity of experimental data, reduces simultaneously the human factor of test.
As mentioned above, given scheme content can derive similar technical scheme in conjunction with the accompanying drawings and embodiments.In every case be the content that does not break away from technical solutions of the utility model,, all still belong in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment does according to technical spirit of the present utility model.
Claims (9)
1. an air-conditioning system detects pilot system, it is characterized in that: comprise tested air-conditioning system, pressure dwelling loop, vacuumize the loop, refrigerant charging reclaims loop and control module, described pressure dwelling loop, vacuumize loop and refrigerant charging and reclaim the loop low-voltage tube interface by connecting pipe and described tested air-conditioning system parallel with one another and high-voltage tube interface and be connected respectively, all be serially connected with the solenoid valve for the control loop break-make on described each loop, each described solenoid valve is connected with described control module.
2. air-conditioning system according to claim 1 detects pilot system, it is characterized in that: described pressure dwelling loop comprises nitrogen cylinder, described nitrogen cylinder is connected with described connecting pipe by the pressurize pipeline, the pressurize solenoid valve that is used for the pilot piping break-make is serially connected in described pressurize pipeline, also branches out one and be used for emptying pressurize bleeder pipe on the pipeline that described connecting pipe connects.
3. air-conditioning system according to claim 1 detects pilot system, it is characterized in that: the described loop that vacuumizes comprises vacuum pump, described vacuum pump is connected with described connecting pipe by vacuum line, and the vacuum solenoid that is used for the pilot piping break-make is serially connected in described vacuum line.
4. air-conditioning system according to claim 1 detects pilot system, it is characterized in that: described refrigerant charging recovery loop comprises the condensation loop for condensating refrigerant, gas refrigerant fills pipeline, liquid refrigerant fills pipeline, reclaim line, the filled bottle and the returnable bottle that are used for the storage cold-producing medium, described gas refrigerant fills pipeline and is connected reclaim line and all is connected with described connecting pipe by described condensation loop again, described liquid refrigerant fills pipeline and directly is connected with described connecting pipe, fills pipeline at described gas refrigerant, liquid refrigerant fills pipeline, be serially connected with the solenoid valve for the pilot piping break-make on the reclaim line.
5. air-conditioning system according to claim 4 detects pilot system, and it is characterized in that: described condensation loop comprises compressor, oil separator, condenser and the four-way change-over valve that is connected successively by pipeline.
6. air-conditioning system according to claim 5 detects pilot system, it is characterized in that: be serially connected with filtrator in described condensation loop.
7. air-conditioning system according to claim 4 detects pilot system, it is characterized in that: described filled bottle and returnable bottle are connected with respectively be used to the electronic scales of weighing.
8. air-conditioning system according to claim 4 detects pilot system, it is characterized in that: described filled bottle and returnable bottle are connected with respectively for emptying evacuated tube.
9. air-conditioning system according to claim 1 detects pilot system, it is characterized in that: described pressure dwelling loop, vacuumize that the loop is reclaimed in loop, refrigerant charging and control module is integrated in the casing, described connecting pipe, pressurize pipeline are provided with connecting interface at described casing.
Priority Applications (1)
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| CN 201220467686 CN202814723U (en) | 2012-09-13 | 2012-09-13 | Detection test system for air-conditioning system |
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| CN 201220467686 CN202814723U (en) | 2012-09-13 | 2012-09-13 | Detection test system for air-conditioning system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674587A (en) * | 2012-09-13 | 2014-03-26 | 南车青岛四方机车车辆股份有限公司 | Test system and method for detection of air conditioning system |
| CN104848487A (en) * | 2015-05-14 | 2015-08-19 | 珠海格力电器股份有限公司 | Intelligent maintenance control system and method |
| CN106813422A (en) * | 2016-12-29 | 2017-06-09 | 华为数字技术（苏州）有限公司 | A kind of detection of air-conditioning device |
| CN106840549A (en) * | 2016-12-29 | 2017-06-13 | 华为数字技术（苏州）有限公司 | A kind of detection of air-conditioning device |
| CN107883619A (en) * | 2017-10-30 | 2018-04-06 | 重庆工业职业技术学院 | A kind of small refrigerant recycling machine TT＆C system and method |
| CN111023641A (en) * | 2019-11-25 | 2020-04-17 | 中国人民解放军陆军军事交通学院镇江校区 | Refrigerant recovery, purification and filling system |
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2012
- 2012-09-13 CN CN 201220467686 patent/CN202814723U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674587A (en) * | 2012-09-13 | 2014-03-26 | 南车青岛四方机车车辆股份有限公司 | Test system and method for detection of air conditioning system |
| CN103674587B (en) * | 2012-09-13 | 2016-04-20 | 中车青岛四方机车车辆股份有限公司 | Air-conditioning system detection experiment system and test method |
| CN104848487A (en) * | 2015-05-14 | 2015-08-19 | 珠海格力电器股份有限公司 | Intelligent maintenance control system and method |
| CN104848487B (en) * | 2015-05-14 | 2018-07-06 | 珠海格力电器股份有限公司 | Intelligent maintenance control system and method |
| CN106813422A (en) * | 2016-12-29 | 2017-06-09 | 华为数字技术（苏州）有限公司 | A kind of detection of air-conditioning device |
| CN106840549A (en) * | 2016-12-29 | 2017-06-13 | 华为数字技术（苏州）有限公司 | A kind of detection of air-conditioning device |
| CN106813422B (en) * | 2016-12-29 | 2020-02-14 | 华为数字技术（苏州）有限公司 | Air conditioner detection device |
| CN107883619A (en) * | 2017-10-30 | 2018-04-06 | 重庆工业职业技术学院 | A kind of small refrigerant recycling machine TT＆C system and method |
| CN111023641A (en) * | 2019-11-25 | 2020-04-17 | 中国人民解放军陆军军事交通学院镇江校区 | Refrigerant recovery, purification and filling system |
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