CN117308431A - Electronic expansion valve regulating method and system, electronic equipment and computer readable medium - Google Patents
Electronic expansion valve regulating method and system, electronic equipment and computer readable medium Download PDFInfo
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- CN117308431A CN117308431A CN202311386787.5A CN202311386787A CN117308431A CN 117308431 A CN117308431 A CN 117308431A CN 202311386787 A CN202311386787 A CN 202311386787A CN 117308431 A CN117308431 A CN 117308431A
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 13
- 238000001704 evaporation Methods 0.000 claims abstract description 133
- 238000004378 air conditioning Methods 0.000 claims abstract description 34
- 238000012423 maintenance Methods 0.000 claims abstract description 20
- 238000004422 calculation algorithm Methods 0.000 claims abstract description 13
- 238000010025 steaming Methods 0.000 claims description 37
- 230000008020 evaporation Effects 0.000 claims description 23
- 238000004364 calculation method Methods 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an electronic expansion valve adjusting method and system, electronic equipment and a computer readable medium, wherein the electronic expansion valve adjusting method comprises the following steps: receiving the evaporating temperature and the air suction temperature sent by an air conditioning unit; judging whether the evaporating temperature sensor and the air suction temperature sensor have faults or not according to the evaporating temperature, the air suction temperature and the temperature data sent by the intelligent operation and maintenance platform; when the evaporating temperature sensor and the air suction temperature sensor are normal, calculating normal superheat according to the evaporating temperature or the air suction temperature; when any one of the evaporating temperature sensor and the air suction temperature sensor has a fault, calculating redundant superheat according to the evaporating temperature or the air suction temperature; inputting the normal superheat degree or the redundant superheat degree into an adjustment control algorithm, and calculating the opening value of the electronic expansion valve; and adjusting the opening degree of the electronic expansion valve according to the opening degree value of the electronic expansion valve. In the sudden fault situation of the air suction temperature sensor or the evaporating temperature sensor, the electronic expansion valve is regulated relatively accurately according to the redundant superheat degree.
Description
Technical Field
The invention relates to the technical field of rail transit air conditioners, in particular to an electronic expansion valve adjusting method and system, electronic equipment and a computer readable medium.
Background
In the conventional subway air conditioner refrigerating/heating system, an electronic expansion valve is used as a throttling device, and the degree of superheat is adjusted in two ways, namely the degree of superheat of air suction and the degree of superheat of evaporation. The air conditioning unit of the subway train can be provided with 1 air suction temperature sensor or 1 evaporating temperature sensor on an air suction pipeline (a pipeline between an evaporator outlet and a compressor air suction port) of a compressor for a single refrigerating/heating system according to related technical requirements, and meanwhile, a low pressure sensor is arranged on the air suction pipeline, and a software control system can calculate the air suction superheat degree or the evaporating superheat degree according to the acquired temperature and pressure values and adjust an electronic expansion valve according to the air suction superheat degree or the evaporating superheat degree.
In the process of implementing the present invention, the inventor finds that at least the following problems exist in the prior art:
when only one air suction temperature sensor or evaporating temperature sensor for superheat calculation of the air conditioner unit suddenly fails and the software control system cannot effectively process, the software control system cannot accurately adjust the electronic expansion valve according to the superheat, and insufficient evaporation of the refrigerant in a pipeline can be caused, so that a series of system problems such as damage to a compressor due to liquid impact, incapability of refrigerating the refrigerating system and the like are caused, and further poor user experience is caused.
Disclosure of Invention
In view of the foregoing, it is an object of the present invention to provide an electronic expansion valve adjusting method and system, an electronic device, and a computer readable medium, which can adjust an electronic expansion valve relatively accurately in the case of an abrupt failure of an intake air temperature sensor or a boil-off temperature sensor.
In a first aspect, the present invention provides a method for regulating an electronic expansion valve, the method comprising:
receiving the evaporating temperature and the air suction temperature sent by an air conditioning unit, wherein the air conditioning unit comprises an evaporating temperature sensor and an air suction temperature sensor;
judging whether faults exist in the distilling temperature sensor and the air suction temperature sensor according to the distilling temperature, the air suction temperature and temperature data sent by the intelligent operation and maintenance platform;
when the evaporating temperature sensor and the air suction temperature sensor are normal, calculating normal superheat according to the evaporating temperature or the air suction temperature;
when any one of the evaporating temperature sensor and the air suction temperature sensor has a fault, calculating redundant superheat according to the evaporating temperature or the air suction temperature;
inputting the normal superheat degree or the redundant superheat degree and the target superheat degree into an adjustment control algorithm, and calculating the opening value of the electronic expansion valve;
and adjusting the opening degree of the electronic expansion valve according to the opening degree value of the electronic expansion valve.
Further, the redundant superheat degree includes a first suction superheat degree, and when any one of the evaporating temperature sensor and the suction temperature sensor has a fault, calculating the redundant superheat degree according to the evaporating temperature or the suction temperature includes:
and when the evaporation temperature sensor fails and the air suction temperature sensor is normal, calculating the first air suction superheat degree according to the evaporation dew point temperature corresponding to the air suction temperature and the low pressure.
Further, the redundant superheat degree includes a first superheat degree, and when any one of the evaporating temperature sensor and the air suction temperature sensor has a fault, calculating the redundant superheat degree according to the evaporating temperature or the air suction temperature includes:
and when the air suction temperature sensor fails and the evaporating temperature sensor is normal, calculating the first evaporating superheat degree according to the evaporating dew point temperature corresponding to the evaporating temperature and the low-pressure.
Further, the method further comprises:
and sending fault information to the intelligent operation and maintenance platform and the train fault monitoring system, wherein the fault information comprises fault information of the distilling temperature sensor, fault information of the air suction temperature sensor and device fault information.
Further, the method further comprises:
when a single refrigerating system in the air conditioning unit is not provided with the distilling temperature sensor and the air suction temperature sensor at the same time, monitoring the second distilling superheat degree and the third distilling superheat degree of the single refrigerating system in real time;
judging whether faults exist in the second steaming-out superheat degree and the third steaming-out superheat degree;
when the second steaming superheat degree is faulty and the third steaming superheat degree is normal, adjusting through the third steaming superheat degree;
and when the third steaming superheat degree is in fault and the second steaming superheat degree is normal, adjusting through the second steaming superheat degree.
In a second aspect, the present invention provides an electronic expansion valve regulating system, the system comprising:
the receiving module is used for receiving the evaporating temperature and the air suction temperature sent by the air conditioning unit, and the air conditioning unit comprises an evaporating temperature sensor and an air suction temperature sensor;
the judging module is used for judging whether faults exist in the evaporating temperature sensor and the air suction temperature sensor according to the evaporating temperature, the air suction temperature and temperature data sent by the intelligent operation and maintenance platform;
the normal superheat degree calculation module is used for calculating the normal superheat degree according to the evaporating temperature or the air suction temperature when the evaporating temperature sensor and the air suction temperature sensor are normal;
the redundant superheat degree calculation module is used for calculating redundant superheat degree according to the evaporating temperature or the air suction temperature when any one of the evaporating temperature sensor and the air suction temperature sensor has faults;
the opening value calculation module is used for inputting the normal superheat degree or the redundant superheat degree and the target superheat degree into an adjustment control algorithm and calculating the opening value of the electronic expansion valve;
and the adjusting module is used for adjusting the opening degree of the electronic expansion valve according to the opening degree value of the electronic expansion valve.
Further, the redundant superheat degree includes a first suction superheat degree, and the redundant superheat degree calculation module is specifically configured to:
and when the evaporation temperature sensor fails and the air suction temperature sensor is normal, calculating the first air suction superheat degree according to the evaporation dew point temperature corresponding to the air suction temperature and the low pressure.
Further, the redundant superheat degree includes a first superheat degree, and the redundant superheat degree calculation module is specifically configured to:
and when the air suction temperature sensor fails and the evaporating temperature sensor is normal, calculating the first evaporating superheat degree according to the evaporating dew point temperature corresponding to the evaporating temperature and the low-pressure.
In a third aspect, the present invention provides an electronic device comprising a memory, a processor, the memory having stored thereon a computer program executable on the processor, the processor implementing the electronic expansion valve adjustment method as described above when executing the computer program.
In a fourth aspect, the present invention provides a computer readable medium having stored thereon a computer program which, when executed by a processor, performs the electronic expansion valve adjustment method as described above.
Compared with the prior art, the electronic expansion valve adjusting method and system, the electronic equipment and the computer readable medium have at least the following beneficial effects:
the electronic expansion valve adjusting method provided by the invention can be applied to an air conditioner software control system, and comprises the following steps: receiving the evaporating temperature and the air suction temperature sent by an air conditioning unit, wherein the air conditioning unit comprises an evaporating temperature sensor and an air suction temperature sensor; judging whether the evaporating temperature sensor and the air suction temperature sensor have faults or not according to the evaporating temperature, the air suction temperature and the temperature data sent by the intelligent operation and maintenance platform; when the evaporating temperature sensor and the air suction temperature sensor are normal, calculating normal superheat according to the evaporating temperature or the air suction temperature; when any one of the evaporating temperature sensor and the air suction temperature sensor has a fault, calculating redundant superheat according to the evaporating temperature or the air suction temperature; inputting the normal superheat degree or the redundant superheat degree and the target superheat degree into an adjustment control algorithm, and calculating the opening value of the electronic expansion valve; and adjusting the opening degree of the electronic expansion valve according to the opening degree value of the electronic expansion valve. According to the invention, redundancy is realized between the suction superheat degree and the evaporation superheat degree by collecting the evaporation temperature and the suction temperature at the same time, and under the situation that the suction temperature sensor or the evaporation temperature sensor suddenly fails, the air conditioning software control system can calculate the redundancy superheat degree according to the temperature data of the normal sensor, and can relatively accurately adjust the electronic expansion valve according to the redundancy superheat degree, so that the refrigeration/heating stability of the air conditioning system can be greatly improved.
The electronic expansion valve regulating system, the electronic equipment and the computer readable medium provided by the invention belong to the same conception with the electronic expansion valve regulating method, so that the electronic expansion valve regulating system and the electronic equipment have the same advantages with the electronic expansion valve regulating method.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flowchart of a method for adjusting an electronic expansion valve according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of an internal circuit of an air conditioning unit according to a first embodiment of the present invention;
FIG. 3 is a flow chart of a single system double-steaming-out superheat redundancy method in an air conditioning unit according to an embodiment of the invention;
FIG. 4 is a flow chart of a single-system double-steaming-out superheat redundancy method in another air conditioning unit according to an embodiment of the invention;
fig. 5 is a schematic diagram of an air conditioner application control system according to a second embodiment of the present invention;
fig. 6 is a schematic diagram of an electronic expansion valve adjusting system according to a third embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The existing new subway train is usually fully-automatic and unmanned, has extremely high requirements on the safety, stability, reliability and intelligent treatment of each system on the train, and basically requires redundancy of the functions of the systems on the train (namely, one equipment fails, and at least one set of equipment keeps normal functions); under the condition of the technical requirement, only one air suction temperature sensor or one evaporating temperature sensor is arranged on one refrigerating pipeline in the air conditioning unit, so that the effective operation of the air conditioning unit cannot be ensured.
When the software control system judges that the steaming temperature sensor or the air suction temperature sensor fails, the refrigeration can be stopped immediately due to the consideration of protecting the compressor, and after the subway train exits operation, relevant technicians need to analyze through a large amount of system data and check whether each device in the refrigeration system has a problem one by one to obtain the failure reason, the whole process is time-consuming and labor-consuming, and the customer is not full and trusty due to untimely treatment, so that irrecoverable loss is caused.
In view of this, this application increases multiple spot temperature measurement (gather evaporating temperature and air suction temperature simultaneously) on the refrigeration pipeline, combines air conditioning software control system to do more comprehensive, more reliable redundant design of superheat degree, promptly after any kind of sensor breaks down, through mutually doing redundancy between air suction superheat degree and the evaporating superheat degree to ensure that electronic expansion valve still can accurate regulation and control under the fault scenario, and the stability of refrigeration/heating of promotion air conditioning system that just can be very big.
In order to facilitate understanding of the present embodiment, the following describes embodiments of the present invention in detail.
Embodiment one:
fig. 1 is a flowchart of a method for adjusting an electronic expansion valve according to an embodiment of the present invention.
Referring to fig. 1, the electronic expansion valve adjusting method provided in the present embodiment may be applied to an air conditioning software control system, and the method includes the following steps:
step S101, receiving the evaporating temperature and the air suction temperature sent by an air conditioning unit, wherein the air conditioning unit comprises an evaporating temperature sensor and an air suction temperature sensor;
specifically, the intake air temperature is collected by an intake air temperature sensor, and the evaporating temperature is collected by an evaporating temperature sensor.
Referring to fig. 2, a distilling temperature sensor and a suction temperature sensor are installed in a single cooling/heating system circuit in an air conditioning unit, and the distilling temperature and the suction temperature can be measured at multiple points to ensure the reliability and accuracy of data. The air conditioning unit shown in fig. 2 is a dual-system unit, and it can be understood that the present application is also applicable to a single-system unit.
When the evaporating temperature and the air suction temperature are acquired, filtering and correcting treatment are needed to be carried out on the evaporating temperature and the air suction temperature, so that the accuracy of the temperature is ensured.
Step S102, judging whether a steaming temperature sensor and an air suction temperature sensor have faults or not according to the steaming temperature, the air suction temperature and temperature data sent by the intelligent operation and maintenance platform;
alternatively, the intelligent operation and maintenance platform will record data within 7 days (settable parameters) of the recent steaming out temperature and the inhalation temperature. When the temperature value in the abnormal range in the recent evaporating temperature data or the air suction temperature data reaches 10 times (settable parameters), the temperature value is transmitted to an air conditioning software control system to be a fault early warning message (fault/non-fault) of the temperature sensor, and the air conditioning software control system judges whether the evaporating temperature sensor or the air suction temperature sensor is truly faulty or not according to the early warning message and the local current message (such as temperature failure, temperature offset and the like), for example, the intelligent operation and maintenance platform is received to be fault early warning, the local current message is that the temperature is invalid, and the temperature sensor is judged to be truly faulty; if the intelligent operation and maintenance platform receives non-fault information and the local temperature is invalid, the local records the times of the conditions, and the conditions appear for 3 times in a cumulative way within 1 hour, so that even if the intelligent operation and maintenance platform gives the non-fault information, the temperature sensor is faulty.
Step S103, when the evaporating temperature sensor and the air suction temperature sensor are normal, calculating normal superheat according to the evaporating temperature or the air suction temperature;
specifically, when the evaporating temperature sensor and the air suction temperature sensor are normal, redundant logic is not executed, and the air conditioning software control system calculates a fourth evaporating superheat degree according to the evaporating temperature (the fourth evaporating superheat degree is closer to the evaporator and the electronic expansion valve and can more truly reflect the control condition of the system under normal conditions); the air conditioning software control system may also calculate the second suction superheat based on the suction temperature, but will generally preferably calculate using the boil-off temperature.
Step S104, when any one of the evaporating temperature sensor and the air suction temperature sensor has a fault, calculating redundant superheat according to the evaporating temperature or the air suction temperature;
here, when there is a failure in either one of the evaporating temperature sensor and the suction temperature sensor, redundancy logic is executed, that is, redundancy superheat is calculated from the evaporating temperature or the suction temperature.
Step S105, inputting the normal superheat degree or the redundant superheat degree and the target superheat degree into an adjustment control algorithm, and calculating the opening value of the electronic expansion valve;
specifically, when the steaming temperature sensor and the air suction temperature sensor are normal, the normal superheat degree and the target superheat degree are input into an adjustment control algorithm; when any one of the evaporating temperature sensor and the air suction temperature sensor has a fault, inputting the redundant superheat degree and the target superheat degree into an adjustment control algorithm; and finally, outputting the opening value of the electronic expansion valve, so that continuous and reliable adjustment of electronic expansion is realized, and stable operation of the system is ensured. The adjusting control algorithm can be a PID algorithm or a fuzzy algorithm. The target superheat degree is obtained by refrigerating system personnel according to air conditioning unit configuration and laboratory tests and is a preset value.
Step S106, the opening degree of the electronic expansion valve is adjusted according to the opening degree value of the electronic expansion valve.
According to the invention, redundancy is realized between the suction superheat degree and the evaporation superheat degree by collecting the evaporation temperature and the suction temperature at the same time, and under the situation that the suction temperature sensor or the evaporation temperature sensor suddenly fails, the air conditioning software control system can calculate the redundancy superheat degree according to the temperature data of the normal sensor, and can relatively accurately adjust the electronic expansion valve according to the redundancy superheat degree, so that the refrigeration/heating stability of the air conditioning system can be greatly improved.
Further, the redundant superheat degree includes a first suction superheat degree, and step S104 includes:
when the evaporating temperature sensor fails and the air suction temperature sensor is normal, calculating a first air suction superheat according to the evaporating dew point temperature corresponding to the air suction temperature and the low pressure.
Further, the redundant superheat degree includes a first superheat degree, and step S104 includes:
when the air suction temperature sensor fails and the evaporating temperature sensor is normal, calculating a first evaporating superheat degree according to the evaporating dew point temperature corresponding to the evaporating temperature and the low pressure.
Specifically, the first suction superheat is calculated from the suction temperature (the temperature of the refrigerant gas sucked by the compressor, which is acquired by a suction temperature sensor provided at the suction port of the compressor) and the evaporation dew point temperature corresponding to the low pressure (the pressure of the refrigerant gas sucked by the compressor, which is acquired by a pressure sensor provided at the suction port of the compressor),
the first evaporation superheat degree is calculated according to the evaporation dew point temperature corresponding to the low pressure and the evaporation temperature (the temperature of the refrigerant gas at the outlet of the evaporator, which is acquired by an evaporation temperature sensor arranged at the outlet of the evaporator).
Further, the method comprises the following steps:
step S201, fault information is sent to the intelligent operation and maintenance platform and the train fault monitoring system, wherein the fault information comprises fault information of a distilling temperature sensor, fault information of an air suction temperature sensor and device fault information.
Further, the method comprises the following steps:
step S301, when a single refrigerating system in the air conditioner unit is not provided with a distilling temperature sensor and an air suction temperature sensor at the same time, monitoring a second distilling superheat degree and a third distilling superheat degree of the single refrigerating system in real time;
step S302, judging whether faults exist in the second evaporation superheat degree and the third evaporation superheat degree;
step S303, when the second steaming superheat degree fails and the third steaming superheat degree is normal, adjusting through the third steaming superheat degree;
step S304, when the third steaming superheat degree fails and the second steaming superheat degree is normal, the second steaming superheat degree is used for adjusting.
Specifically, the method is implemented on the basis of fig. 2, wherein the second steaming superheat degree corresponds to the steaming superheat degree 1 of fig. 2, and the third steaming superheat degree corresponds to the steaming superheat degree 2 of fig. 2; judging whether the second and third superheat degree have faults or not, wherein the first scenario refers to fig. 3, when the second superheat degree 1 has faults and the second superheat degree 2 is normal, the electronic expansion valve 1 is not regulated according to the second superheat degree 1 in a short time, but is regulated by the second superheat degree 2; referring to fig. 4, when the superheat degree 2 is in failure, and the superheat degree 1 is normal, the electronic expansion valve 2 is not adjusted according to the superheat degree 2 in a short time, but is adjusted by the superheat degree 2, so as to realize the redundancy function of the superheat degree.
The difference of the system pipelines may cause the superheat degree of the electronic expansion valve to have some deviation in adjustment after the redundant replacement is performed, so that the electronic expansion valve protection logic needs to be combined for further optimization to ensure the adjustment effect after the redundancy is adjusted.
And the air conditioning software control system monitors the conditions of 2 steaming temperature sensors in real time, and if one steaming temperature sensor with a fault is recovered to be normal, the software exits executing the redundant logic, and adjusts the electronic expansion valve according to the steaming superheat degree of the normal corresponding relation.
The method combines the device configuration in the current rail-mounted main flow air conditioning unit, and realizes the mutual redundancy between the air suction superheat degree and the steaming superheat degree, between the steaming superheat degree 1 and the steaming superheat degree 2 and the like through the cooperation between the control logic of the air conditioning software control system and the intelligent operation and maintenance platform; the method greatly improves the running stability and reliability of the air conditioning refrigerating/heating system of the train on the premise of not affecting the control effect of the electronic expansion valve, realizes quick response fault treatment, and meets the redundant design requirement of the air conditioning system devices in the rail transit industry.
Embodiment two:
fig. 5 is a schematic diagram of an air conditioner application control system according to a second embodiment of the present invention.
Referring to fig. 5, the air conditioner application control system includes: the system comprises an air conditioning unit, an air conditioning software control system, an intelligent operation and maintenance platform, a train fault monitoring system and an electronic expansion valve.
The air conditioning unit is used for detecting the steaming temperature and the air suction temperature, detecting other temperature data and pressure data and then sending the data to the air conditioning software control system through a related communication protocol;
the air conditioner software control system is used for judging whether the steaming temperature sensor and the air suction temperature sensor have faults, if the faults cannot be effectively judged, analyzing by combining temperature data of the intelligent operation and maintenance platform, and further confirming the faults: the evaporating temperature sensor or the air suction temperature sensor is a real fault, and the overheat redundancy logic needs to be executed, and meanwhile fault information is reported to the intelligent operation and maintenance platform and the train fault monitoring system.
The intelligent operation and maintenance platform is used for feeding back recent temperature data of the evaporating temperature sensor and the air suction temperature sensor to the air conditioning software control system so that the air conditioning software control system can judge the sensor condition more accurately; the system is also used for collecting fault information (information such as pressure, temperature, device faults and the like) of the air conditioning software control system in real time, so that related personnel can conveniently and remotely analyze the fault information and check the running state of the air conditioner in time, and the air conditioner can timely run in line with the fault of the closed loop air conditioner.
The train fault monitoring system is used for receiving the sensor fault information and fault help sent by the air conditioner software control system, so that a train driver can know the positive running condition of the air conditioner of the backup train conveniently.
Embodiment III:
fig. 6 is a schematic diagram of an electronic expansion valve adjusting system according to a third embodiment of the present invention.
Referring to fig. 6, the electronic expansion valve adjusting system provided in the present embodiment may be applied to an air conditioning software control system, which includes:
the receiving module is used for receiving the evaporating temperature and the air suction temperature sent by the air conditioning unit, and the air conditioning unit comprises an evaporating temperature sensor and an air suction temperature sensor;
the judging module is used for judging whether the steaming temperature sensor and the air suction temperature sensor have faults or not according to the steaming temperature, the air suction temperature and the temperature data sent by the intelligent operation and maintenance platform;
the normal superheat degree calculation module is used for calculating the normal superheat degree according to the evaporating temperature or the air suction temperature when the evaporating temperature sensor and the air suction temperature sensor are normal;
the redundant superheat degree calculation module is used for calculating the redundant superheat degree according to the evaporating temperature or the air suction temperature when any one of the evaporating temperature sensor and the air suction temperature sensor has a fault;
the opening value calculation module is used for inputting the normal superheat degree or the redundant superheat degree and the target superheat degree into an adjustment control algorithm and calculating the opening value of the electronic expansion valve;
and the adjusting module is used for adjusting the opening degree of the electronic expansion valve according to the opening degree value of the electronic expansion valve.
Further, the redundant superheat degree includes a first suction superheat degree, and the redundant superheat degree calculation module is specifically configured to:
when the evaporating temperature sensor fails and the air suction temperature sensor is normal, calculating a first air suction superheat according to the evaporating dew point temperature corresponding to the air suction temperature and the low pressure.
Further, the redundant superheat degree includes a first superheat degree, and the redundant superheat degree calculation module is specifically configured to:
when the air suction temperature sensor fails and the evaporating temperature sensor is normal, calculating a first evaporating superheat degree according to the evaporating dew point temperature corresponding to the evaporating temperature and the low pressure.
The embodiment of the invention also provides electronic equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the steps of the electronic expansion valve regulating method provided by the embodiment when executing the computer program.
The present invention also provides a computer readable medium having a processor executable non-volatile program code, the computer readable medium having a computer program stored thereon, which when executed by a processor performs the steps of the electronic expansion valve adjustment method of the above embodiments.
The computer program product provided by the embodiment of the present invention includes a computer readable storage medium storing a program code, where instructions included in the program code may be used to perform the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment and will not be described herein.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system and apparatus may refer to corresponding procedures in the foregoing method embodiments, which are not described herein again.
In addition, in the description of embodiments of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method of electronic expansion valve adjustment, the method comprising:
receiving the evaporating temperature and the air suction temperature sent by an air conditioning unit, wherein the air conditioning unit comprises an evaporating temperature sensor and an air suction temperature sensor;
judging whether faults exist in the distilling temperature sensor and the air suction temperature sensor according to the distilling temperature, the air suction temperature and temperature data sent by the intelligent operation and maintenance platform;
when the evaporating temperature sensor and the air suction temperature sensor are normal, calculating normal superheat according to the evaporating temperature or the air suction temperature;
when any one of the evaporating temperature sensor and the air suction temperature sensor has a fault, calculating redundant superheat according to the evaporating temperature or the air suction temperature;
inputting the normal superheat degree or the redundant superheat degree and the target superheat degree into an adjustment control algorithm, and calculating the opening value of the electronic expansion valve;
and adjusting the opening degree of the electronic expansion valve according to the opening degree value of the electronic expansion valve.
2. The electronic expansion valve adjusting method according to claim 1, wherein the redundant superheat degree includes a first suction superheat degree, and when any one of the distilled-out temperature sensor and the suction temperature sensor has a failure, calculating the redundant superheat degree from the distilled-out temperature or the suction temperature includes:
and when the evaporation temperature sensor fails and the air suction temperature sensor is normal, calculating the first air suction superheat degree according to the evaporation dew point temperature corresponding to the air suction temperature and the low pressure.
3. The electronic expansion valve adjusting method according to claim 1, wherein the redundant superheat degree includes a first boil-off superheat degree, and when any one of the boil-off temperature sensor and the intake temperature sensor has a failure, calculating the redundant superheat degree based on the boil-off temperature or the intake temperature includes:
and when the air suction temperature sensor fails and the evaporating temperature sensor is normal, calculating the first evaporating superheat degree according to the evaporating dew point temperature corresponding to the evaporating temperature and the low-pressure.
4. The electronic expansion valve adjustment method according to claim 1, characterized in that the method further comprises:
and sending fault information to the intelligent operation and maintenance platform and the train fault monitoring system, wherein the fault information comprises fault information of the distilling temperature sensor, fault information of the air suction temperature sensor and device fault information.
5. The electronic expansion valve adjustment method according to claim 1, characterized in that the method further comprises:
when a single refrigerating system in the air conditioning unit is not provided with the distilling temperature sensor and the air suction temperature sensor at the same time, monitoring the second distilling superheat degree and the third distilling superheat degree of the single refrigerating system in real time;
judging whether faults exist in the second steaming-out superheat degree and the third steaming-out superheat degree;
when the second steaming superheat degree is faulty and the third steaming superheat degree is normal, adjusting through the third steaming superheat degree;
and when the third steaming superheat degree is in fault and the second steaming superheat degree is normal, adjusting through the second steaming superheat degree.
6. An electronic expansion valve regulating system, the system comprising:
the receiving module is used for receiving the evaporating temperature and the air suction temperature sent by the air conditioning unit, and the air conditioning unit comprises an evaporating temperature sensor and an air suction temperature sensor;
the judging module is used for judging whether faults exist in the evaporating temperature sensor and the air suction temperature sensor according to the evaporating temperature, the air suction temperature and temperature data sent by the intelligent operation and maintenance platform;
the normal superheat degree calculation module is used for calculating the normal superheat degree according to the evaporating temperature or the air suction temperature when the evaporating temperature sensor and the air suction temperature sensor are normal;
the redundant superheat degree calculation module is used for calculating redundant superheat degree according to the evaporating temperature or the air suction temperature when any one of the evaporating temperature sensor and the air suction temperature sensor has faults;
the opening value calculation module is used for inputting the normal superheat degree or the redundant superheat degree and the target superheat degree into an adjustment control algorithm and calculating the opening value of the electronic expansion valve;
and the adjusting module is used for adjusting the opening degree of the electronic expansion valve according to the opening degree value of the electronic expansion valve.
7. The electronic expansion valve adjustment system of claim 6, wherein said redundant superheat comprises a first suction superheat, said redundant superheat calculation module being specifically configured to:
and when the evaporation temperature sensor fails and the air suction temperature sensor is normal, calculating the first air suction superheat degree according to the evaporation dew point temperature corresponding to the air suction temperature and the low pressure.
8. The electronic expansion valve adjustment system of claim 6, wherein the redundant superheat comprises a first superheat, the redundant superheat calculation module being specifically configured to:
and when the air suction temperature sensor fails and the evaporating temperature sensor is normal, calculating the first evaporating superheat degree according to the evaporating dew point temperature corresponding to the evaporating temperature and the low-pressure.
9. An electronic device comprising a memory, a processor, the memory having stored thereon a computer program executable on the processor, wherein the processor implements the electronic expansion valve adjustment method of any of the preceding claims 1 to 5 when the computer program is executed.
10. A computer readable medium, characterized in that it has stored thereon a computer program which, when executed by a processor, performs the electronic expansion valve adjustment method according to any of the preceding claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311386787.5A CN117308431A (en) | 2023-10-24 | 2023-10-24 | Electronic expansion valve regulating method and system, electronic equipment and computer readable medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311386787.5A CN117308431A (en) | 2023-10-24 | 2023-10-24 | Electronic expansion valve regulating method and system, electronic equipment and computer readable medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117308431A true CN117308431A (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311386787.5A Pending CN117308431A (en) | 2023-10-24 | 2023-10-24 | Electronic expansion valve regulating method and system, electronic equipment and computer readable medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117308431A (en) |
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2023
- 2023-10-24 CN CN202311386787.5A patent/CN117308431A/en active Pending
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