CN102042661B - Pressure protection method for metro vehicle air-conditioning system - Google Patents
Pressure protection method for metro vehicle air-conditioning system Download PDFInfo
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- CN102042661B CN102042661B CN201010610572A CN201010610572A CN102042661B CN 102042661 B CN102042661 B CN 102042661B CN 201010610572 A CN201010610572 A CN 201010610572A CN 201010610572 A CN201010610572 A CN 201010610572A CN 102042661 B CN102042661 B CN 102042661B
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Abstract
The invention discloses a pressure protection method for a metro vehicle air-conditioning system. The method is completed based on a pressure protection processing system, wherein the pressure protection processing system separates a primary high-pressure protective switch, a secondary high-pressure protective switch and a low-pressure protective switch from hardware circuits; and an air-conditioning controller performs signal acquisition and protection processing on the switches. The method has the advantages that: the traditional railway air-conditioning pressure protection design mode is improved from hardware design and software processing aspects, so that the air-conditioning system can adapt to hostile working environments, safety and reliability of air-conditioning unit operation can be ensured, and an excellent riding environment is built for passengers.
Description
Technical field
The present invention relates to a kind of subway ' s air-conditioning system pressure protect method, be applicable to the rail traffic vehicles air conditioner technical field.
Background technology
At present, in the domestic train air-conditioning system, bad and station installs situation such as shield door additional and makes tunnel temperature constantly raise because of tunnel ventilation, and the operation of air conditioner environment is abominable day by day.Traditional air conditioning pressure protective device generally has only the protection of one-level high-pressure; And on hardware circuit, be together in series and together handle with low pressure protection; The pressure fault system that any degree occurs all can locked fault; Associated compressors is no longer worked, and this design is difficult to guarantee that air-conditioning runs well in adverse circumstances.
Summary of the invention
The technical problem that the present invention will solve provides a kind ofly carries out the guard method of improved air conditioner of subway vehicle system pressure to conventional train air conditioning pressure protection from hardware designs and software processes aspect; Be used for guaranteeing the normal operation of train air-conditioning system, make the passenger that a good environment by bus arranged.
For solving the problems of the technologies described above; The technical scheme that the present invention taked is: the method for the invention is accomplished based on the pressure protect treatment system, and said pressure protect treatment system comprises one-level high-pressure protection switch, secondary high-pressure protection switch, low pressure protection switch and air-conditioner controller; Be connected with the power supply common port of air-conditioner controller after the lower end of said one-level high-pressure protection switch, secondary high-pressure protection switch and low pressure protection switch is connected in parallel, the upper end of said one-level high-pressure protection switch, secondary high-pressure protection switch and low pressure protection switch is connected with signals collecting input B, C, the D of air-conditioner controller respectively; Concrete grammar is following:
Air-conditioner controller is judged the rank of pressure fault according to the switching signal that collects, and the branch situation is carried out troubleshooting:
(1) after the low pressure protection switch broke off because of the low pressure fault, air-conditioner controller was gathered fault-signal, and carries out the low pressure troubleshooting, and treatment step is following:
Step 1, compressor of air conditioner start back preceding 10 seconds, ignore the signal of low pressure protection switch, and compressor normally moves;
Step 2, compressor of air conditioner started after 10 seconds, and the low pressure fault takes place, and compressor of air conditioner was shut down 2 minutes, and write down the low pressure number of stoppages 1 time;
Step 3, when the low pressure protection switch does not recover yet after compressor of air conditioner is shut down 2 minutes, locked fault; When the low pressure protection switch recovered after compressor of air conditioner is shut down 2 minutes, compressor of air conditioner changed normal operating condition over to;
Step 4, compressor of air conditioner because of the low pressure disorderly closedown after, from the low pressure protection switch recover, compressor of air conditioner once more normally operation pick up counting, in when, in 2 minutes the low pressure fault taking place once more when, locked fault; When between 15 minutes, the low pressure fault taking place once more in 2 minutes, the low pressure number of stoppages of record adds 1, and program changes step 3 over to; When within 15 minutes the low pressure fault not taking place, with the low pressure number of stoppages zero clearing of record;
Step 5, when the low pressure number of stoppages of record is 3 times, locked fault;
(2) after one-level high-pressure protection switch broke off because of one-level high-pressure fault, air-conditioner controller was gathered fault-signal, and carries out the troubleshooting of one-level high-pressure, and treatment step is following:
One-level high-pressure fault takes place in step 1, and compressor of air conditioner was shut down 2 minutes or directly changed the unloading running status over to, and writes down the one-level high-pressure number of stoppages 1 time;
Step 2, when one-level high-pressure protection switch does not recover yet after compressor of air conditioner is shut down 2 minutes, locked fault; When one-level high-pressure protection switch recovered after compressor of air conditioner is shut down 2 minutes, compressor of air conditioner changed unloading running status (if compressor of air conditioner does not have offloading functions, then compressor of air conditioner changes normal operating condition over to, down with) over to;
Step 3, compressor of air conditioner because of one-level high-pressure disorderly closedown after, from one-level high-pressure protection switch recover, compressor of air conditioner once more normally operation pick up counting, when one-level high-pressure fault takes place in 2 minutes once more when, locked fault; When one-level high-pressure fault taking place once more in 2 minutes between 15 minutes, the one-level high-pressure number of stoppages of record adds 1, and program changes step 2 over to; When one-level high-pressure fault did not take place within 15 minutes, with the one-level high-pressure number of stoppages zero clearing of record;
Step 4, when the one-level high-pressure number of stoppages of record is 5 times, locked fault;
(3) after secondary high-pressure protection switch broke off because of secondary high-pressure fault, air-conditioner controller (4) was gathered fault-signal, and carries out the troubleshooting of secondary high-pressure, and treatment step is following:
Secondary high-pressure fault takes place in step 1, and compressor of air conditioner was shut down 2 minutes;
Step 2, when secondary high-pressure protection switch does not recover yet after compressor of air conditioner is shut down 2 minutes, locked fault; When secondary high-pressure protection switch recovered after compressor of air conditioner is shut down 2 minutes, compressor of air conditioner changed the unloading running status over to;
Step 3, when compressor of air conditioner changes the unloading running status over to and secondary high-pressure fault takes place once more within 1 minute, locked fault; Otherwise compressor of air conditioner keeps normal operating condition, up to finish refrigeration because of temperature conditions.
Said one-level high-pressure protection switch is the little switch of return difference value.
When compressor of air conditioner did not possess offloading functions, said unloading running status changed normal operating condition into
Adopt the beneficial effect that technique scheme produced to be: to improve traditional railway air conditioning pressure protect design from hardware designs and software processes aspect; Make air-conditioning system can adapt to bad working environment; Guarantee the security and the reliability of air-conditioning unit operation, for the passenger builds a good environment by bus.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation.
Fig. 1 is a hardware design structure sketch map of the present invention;
Fig. 2-1 is to Fig. 2-the 6th, low pressure fault treating procedure sketch map of the present invention;
Fig. 3-1 is to Fig. 3-the 5th, one-level high-pressure fault treating procedure sketch map of the present invention;
Fig. 4-1 is to Fig. 4-the 3rd, secondary high-pressure fault treating procedure sketch map of the present invention.
The specific embodiment
The method of the invention is accomplished based on the pressure protect treatment system, and as shown in Figure 1, said pressure protect treatment system comprises one-level high-pressure protection switch 1, secondary high-pressure protection switch 2, low pressure protection switch 3 and air-conditioner controller 4; The back that is connected in parallel, the lower end of said one-level high-pressure protection switch 1, secondary high-pressure protection switch 2 and low pressure protection switch 3 is connected with the power supply common port of air-conditioner controller 4, and the upper end of said one-level high-pressure protection switch 1, secondary high-pressure protection switch 2 and low pressure protection switch 3 is connected with signals collecting input B, C, the D of air-conditioner controller 4 respectively.Concrete implementation method is following:
Air-conditioner controller 4 is judged the rank of pressure fault according to the switching signal that collects, and the branch situation is carried out troubleshooting:
(1) after low pressure protection switch 3 broke off because of the low pressure fault, air-conditioner controller 4 was gathered fault-signal, and carries out the low pressure troubleshooting, and treatment step is following:
Step 1, compressor of air conditioner start back preceding 10 seconds, ignore the signal of low pressure protection switch 3, and compressor normally moves, shown in Fig. 2-1;
Step 2, compressor of air conditioner started after 10 seconds, and the low pressure fault takes place, and compressor of air conditioner was shut down 2 minutes, and write down the low pressure number of stoppages 1 time, shown in Fig. 2-2;
Step 3, when low pressure protection switch 3 did not recover yet after compressor of air conditioner is shut down 2 minutes, locked fault was shown in Fig. 2-3; When low pressure protection switch 3 recovered after compressor of air conditioner is shut down 2 minutes, compressor of air conditioner changed normal operating condition over to, shown in Fig. 2-2;
Step 4, compressor of air conditioner because of the low pressure disorderly closedown after, from low pressure protection switch 3 recover, compressor of air conditioner once more normally operation pick up counting, when in 2 minutes the low pressure fault taking place once more, locked fault is shown in Fig. 2-4; When between 15 minutes, the low pressure fault taking place once more in 2 minutes, the low pressure number of stoppages of record adds 1, and program changes step 3 over to; When within 15 minutes the low pressure fault not taking place, with the low pressure number of stoppages zero clearing of record, shown in Fig. 2-5;
Step 5, when the low pressure number of stoppages of record was 3 times, locked fault was shown in Fig. 2-6.
(2) after one-level high-pressure protection switch 1 broke off because of one-level high-pressure fault, air-conditioner controller 4 was gathered fault-signal, and carries out the troubleshooting of one-level high-pressure, and treatment step is following:
One-level high-pressure fault takes place in step 1, and compressor of air conditioner was shut down 2 minutes or directly changed the unloading running status over to, and writes down the one-level high-pressure number of stoppages 1 time, shown in Fig. 3-1;
Step 2, when one-level high-pressure protection switch 1 did not recover yet after compressor of air conditioner is shut down 2 minutes, locked fault was shown in Fig. 3-2; When one-level high-pressure protection switch 1 recovered after compressor of air conditioner is shut down 2 minutes, compressor of air conditioner changed unloading running status (if compressor of air conditioner does not have offloading functions, then compressor of air conditioner changes normal operating condition over to, down with) over to, shown in Fig. 3-1;
Step 3, compressor of air conditioner because of one-level high-pressure disorderly closedown after, from one-level high-pressure protection switch 1 recover, compressor of air conditioner once more normally operation pick up counting, when one-level high-pressure fault took place in 2 minutes once more, locked fault was shown in Fig. 3-3; When one-level high-pressure fault taking place once more in 2 minutes between 15 minutes, the one-level high-pressure number of stoppages of record adds 1, and program changes step 2 over to; When one-level high-pressure fault did not take place within 15 minutes, with the one-level high-pressure number of stoppages zero clearing of record, shown in Fig. 3-4;
Step 4, when the one-level high-pressure number of stoppages of record was 5 times, locked fault was shown in Fig. 3-5;
(3) after secondary high-pressure protection switch 2 broke off because of secondary high-pressure fault, air-conditioner controller 4 was gathered fault-signal, and carries out the troubleshooting of secondary high-pressure, and treatment step is following:
Secondary high-pressure fault takes place in step 1, and compressor of air conditioner was shut down 2 minutes, shown in Fig. 4-1;
Step 2, when secondary high-pressure protection switch 2 did not recover yet after compressor of air conditioner is shut down 2 minutes, locked fault was shown in Fig. 4-2; When secondary high-pressure protection switch 2 recovered after compressor of air conditioner is shut down 2 minutes, compressor of air conditioner changed the unloading running status over to, shown in Fig. 4-1;
Step 3, when compressor of air conditioner changed the unloading running status over to and secondary high-pressure fault takes place once more within 1 minute, locked fault was shown in Fig. 4-3; Otherwise compressor of air conditioner keeps normal operating condition, up to finish refrigeration because of temperature conditions.
For the air conditioning pressure protection treatment system that is provided with secondary high-pressure protection switch, said one-level high-pressure protection switch considered is selected the less switch of return difference value for use.
In sum; Air conditioner of subway vehicle system pressure according to the invention guard method; One-level high-pressure protection switch, secondary high-pressure protection switch and low pressure protection switch are separated from hardware circuit, and air-conditioner controller carries out signals collecting to it respectively to be handled with protection, can make air-conditioning system adapt to bad working environment like this; Guarantee the normal operation of air-conditioning system, make the passenger that a good environment by bus arranged.
Claims (3)
1. air conditioner of subway vehicle system pressure guard method; It is characterized in that: said method is accomplished based on the pressure protect treatment system, and said pressure protect treatment system comprises one-level high-pressure protection switch (1), secondary high-pressure protection switch (2), low pressure protection switch (3) and air-conditioner controller (4); Be connected with the power supply common port A of air-conditioner controller (4) after the lower end of said one-level high-pressure protection switch (1), secondary high-pressure protection switch (2) and low pressure protection switch (3) is connected in parallel, the upper end of said one-level high-pressure protection switch (1), secondary high-pressure protection switch (2) and low pressure protection switch (3) is connected with signals collecting input B, C, the D of air-conditioner controller (4) respectively; Concrete grammar is following:
Air-conditioner controller (4) is judged the rank of pressure fault according to the switching signal that collects, and the branch situation is carried out troubleshooting:
One, after low pressure protection switch (3) broke off because of the low pressure fault, air-conditioner controller (4) was gathered fault-signal, and carries out the low pressure troubleshooting, and treatment step is following:
Step 1, compressor of air conditioner start back preceding 10 seconds, ignore the signal of low pressure protection switch (3), and compressor normally moves;
Step 2, compressor of air conditioner started after 10 seconds, and the low pressure fault takes place, and compressor of air conditioner was shut down 2 minutes, and write down the low pressure number of stoppages 1 time;
Step 3, low pressure protection switch (3) when recovering not yet after compressor of air conditioner is shut down 2 minutes, locked fault; When low pressure protection switch (3) recovered after compressor of air conditioner is shut down 2 minutes, compressor of air conditioner changed normal operating condition over to;
Step 4, compressor of air conditioner because of the low pressure disorderly closedown after, from low pressure protection switch (3) recover, compressor of air conditioner once more normally operation pick up counting, in when, in 2 minutes the low pressure fault taking place once more when, locked fault; When between 15 minutes, the low pressure fault taking place once more in 2 minutes, the low pressure number of stoppages of record adds 1, and program changes step 3 over to; When within 15 minutes the low pressure fault not taking place, with the low pressure number of stoppages zero clearing of record;
Step 5, when the low pressure number of stoppages of record is 3 times, locked fault;
Two, after one-level high-pressure protection switch (1) broke off because of one-level high-pressure fault, air-conditioner controller (4) was gathered fault-signal, and carries out the troubleshooting of one-level high-pressure, and treatment step is following:
One-level high-pressure fault takes place in step 1, and compressor of air conditioner was shut down 2 minutes or directly changed the unloading running status over to, and writes down the one-level high-pressure number of stoppages 1 time;
Step 2, one-level high-pressure protection switch (1) when recovering not yet after compressor of air conditioner is shut down 2 minutes, locked fault; When one-level high-pressure protection switch (1) recovered after compressor of air conditioner is shut down 2 minutes, compressor of air conditioner changed the unloading running status over to;
Step 3, compressor of air conditioner because of one-level high-pressure disorderly closedown after, from one-level high-pressure protection switch (1) recover, compressor of air conditioner once more normally operation pick up counting, when one-level high-pressure fault takes place in 2 minutes once more when, locked fault; When one-level high-pressure fault taking place once more in 2 minutes between 15 minutes, the one-level high-pressure number of stoppages of record adds 1, and program changes step 2 over to; When one-level high-pressure fault did not take place within 15 minutes, with the one-level high-pressure number of stoppages zero clearing of record;
Step 4, when the one-level high-pressure number of stoppages of record is 5 times, locked fault;
Three, after secondary high-pressure protection switch (2) broke off because of secondary high-pressure fault, air-conditioner controller (4) was gathered fault-signal, and carries out the troubleshooting of secondary high-pressure, and treatment step is following:
Secondary high-pressure fault takes place in step 1, and compressor of air conditioner was shut down 2 minutes;
Step 2, secondary high-pressure protection switch (2) when recovering not yet after compressor of air conditioner is shut down 2 minutes, locked fault; When secondary high-pressure protection switch (2) recovered after compressor of air conditioner is shut down 2 minutes, compressor of air conditioner changed the unloading running status over to;
Step 3, when compressor of air conditioner changes the unloading running status over to and secondary high-pressure fault takes place once more within 1 minute, locked fault; Otherwise compressor of air conditioner keeps normal operating condition, up to finish refrigeration because of temperature conditions.
2. air conditioner of subway vehicle system pressure according to claim 1 guard method is characterized in that said one-level high-pressure protection switch (1) is the little switch of return difference value.
3. air conditioner of subway vehicle system pressure according to claim 1 guard method is characterized in that when compressor of air conditioner does not possess offloading functions said unloading running status changes normal operating condition into.
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| CN201010610572A CN102042661B (en) | 2010-12-29 | 2010-12-29 | Pressure protection method for metro vehicle air-conditioning system |
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| CN201010610572A CN102042661B (en) | 2010-12-29 | 2010-12-29 | Pressure protection method for metro vehicle air-conditioning system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102937323B (en) * | 2011-08-16 | 2015-02-11 | 中国钢铁股份有限公司 | Air-conditioning set operation protection device |
| CN106766423B (en) * | 2016-12-30 | 2019-04-12 | 石家庄国祥运输设备有限公司 | The method of the high pressure storage and transportation mechanism security monitoring of rail traffic air-conditioning system |
| CN107528293A (en) * | 2017-07-28 | 2017-12-29 | 珠海格力电器股份有限公司 | The treating method and apparatus of unit failure |
| CN111055862B (en) * | 2019-10-18 | 2020-11-10 | 石家庄国祥运输设备有限公司 | Low-voltage protection method for air conditioner of railway vehicle |
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| EP1577132A1 (en) * | 2004-03-15 | 2005-09-21 | Sanyo Electric Co., Ltd. | Vehicle air conditioner |
| JP2008201335A (en) * | 2007-02-22 | 2008-09-04 | Denso Corp | Vehicular air-conditioner |
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| CN201181836Y (en) * | 2008-04-02 | 2009-01-14 | Tcl集团股份有限公司 | Protecting equipment for air conditioner compressor |
| CN201288650Y (en) * | 2008-11-06 | 2009-08-12 | 上海通用汽车有限公司 | Air-conditioner compressor system for vehicle |
| JP2010038080A (en) * | 2008-08-06 | 2010-02-18 | Toyota Industries Corp | Air conditioner for vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006088979A (en) * | 2004-09-27 | 2006-04-06 | Denso Corp | Air conditioner for vehicle |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1577132A1 (en) * | 2004-03-15 | 2005-09-21 | Sanyo Electric Co., Ltd. | Vehicle air conditioner |
| JP2008201335A (en) * | 2007-02-22 | 2008-09-04 | Denso Corp | Vehicular air-conditioner |
| CN201166796Y (en) * | 2007-12-11 | 2008-12-17 | 株洲南车时代电气股份有限公司 | Universal controller of an air conditioner |
| CN201181836Y (en) * | 2008-04-02 | 2009-01-14 | Tcl集团股份有限公司 | Protecting equipment for air conditioner compressor |
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