CN114383346B - Method and device for processing fault of refrigerating unit and computer readable storage medium - Google Patents
Method and device for processing fault of refrigerating unit and computer readable storage medium Download PDFInfo
- Publication number
- CN114383346B CN114383346B CN202111620354.2A CN202111620354A CN114383346B CN 114383346 B CN114383346 B CN 114383346B CN 202111620354 A CN202111620354 A CN 202111620354A CN 114383346 B CN114383346 B CN 114383346B
- Authority
- CN
- China
- Prior art keywords
- fault
- unit
- signal
- refrigerating
- refrigeration unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 62
- 238000012545 processing Methods 0.000 title abstract description 10
- 238000005057 refrigeration Methods 0.000 claims abstract description 94
- 238000001514 detection method Methods 0.000 claims abstract description 87
- 230000008569 process Effects 0.000 claims abstract description 29
- 238000012544 monitoring process Methods 0.000 claims abstract description 23
- 230000006870 function Effects 0.000 claims description 64
- 238000007710 freezing Methods 0.000 claims description 31
- 230000008014 freezing Effects 0.000 claims description 31
- 238000001816 cooling Methods 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000004590 computer program Methods 0.000 claims description 9
- 230000007257 malfunction Effects 0.000 claims description 6
- 230000008054 signal transmission Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application discloses a method and a device for processing faults of a refrigerating unit and a computer readable storage medium, wherein the scheme provided by the application comprises the following steps: monitoring fault detection signals of all equipment in the refrigerating unit in the running process of the refrigerating unit; determining a fault type of the refrigeration unit according to the fault detection signal, wherein the fault type comprises a function available fault and a function unavailable fault; if the fault type is a function available fault, continuing to operate the refrigeration unit.
Description
Technical Field
The present application relates to the field of cold source technologies, and in particular, to a method and an apparatus for processing a fault of a refrigeration unit, and a computer readable storage medium.
Background
The cold source group control system is abbreviated as a BA system, the BA system is popular in a data center at present, how to improve the safety of the BA system is a topic which is studied in the industry, system improvement based on a large number of safety accidents at present and redundancy improvement are achieved, and the main stream system can be basically used for dealing with primary faults at present.
When the current system detects that the target refrigeration unit fails, the redundant refrigeration unit is typically turned on and the failed refrigeration unit is turned off. When there is no redundant refrigeration unit available at present due to a refrigeration unit failure or refrigeration unit maintenance, etc., the failed refrigeration unit is directly turned off again when the refrigeration unit failure occurs, and thus the refrigerating capacity is insufficient and the end temperature rises.
Disclosure of Invention
An object of an embodiment of the application is to provide a method and a device for processing a fault of a refrigerating unit, and a computer readable storage medium, which are used for solving the problem of insufficient refrigerating capacity caused by directly closing the fault refrigerating unit at present.
In order to solve the technical problems, the present specification is implemented as follows:
in a first aspect, a method for processing a fault of a refrigeration unit is provided, including:
monitoring fault detection signals of all equipment in the refrigerating unit in the running process of the refrigerating unit;
determining a fault type of the refrigeration unit according to the fault detection signal, wherein the fault type comprises a function available fault and a function unavailable fault;
if the fault type is a function available fault, continuing to operate the refrigeration unit.
Optionally, monitoring fault detection signals of devices in the refrigeration unit includes:
if the target equipment in the refrigerating unit is a refrigerating pump, a cooling tower or a chiller, monitoring a detection signal of a fault detection point corresponding to the target equipment;
if the target device is a valve, a feedback signal of the target device after the freezer unit sends an open command or a manual command is monitored.
Optionally, determining the fault type of the refrigeration unit according to the fault detection signal includes at least one of:
if the detection signal of the fault detection point position corresponding to the target equipment is a fault signal, determining that the freezing unit is a function unavailable fault;
if the detection signal of the fault detection point position corresponding to the target equipment is an on-state signal or a manual-automatic signal and the on-state signal or the manual-automatic signal does not meet a preset condition, determining that the freezing unit is a function available fault;
if the feedback signal of the target device is not an on state signal or a manual signal, the refrigeration unit is determined to be a malfunction available for function.
Optionally, the method further comprises:
in the process of continuously operating the refrigeration unit, verifying whether a determination result of the functional available fault is correct by combining at least one of a signal of a fault detection point corresponding to target equipment in the refrigeration unit, the water outlet temperature of the refrigeration unit and the pipeline pressure in the refrigeration unit;
if the determination is verified to be correct, continuing to operate the refrigeration unit.
Optionally, the device corresponding to the functional available fault is a cryopump, a cooling pump or a cooling tower, and verifying whether the determination result of the functional available fault is correct includes:
monitoring a detection signal of a fault detection point position corresponding to a chiller in the refrigerating unit or the water outlet temperature of the refrigerating unit in the process of continuously operating the refrigerating unit;
if the detection signal of the fault detection point position corresponding to the chiller is not a fault signal or the water outlet temperature of the freezing unit does not exceed a preset temperature value within a first preset time period, the determination result is verified to be correct.
Optionally, the device corresponding to the functional available fault is a chiller, and verifying whether the detection result of the functional available fault is correct includes:
monitoring the outlet water temperature of the freezing unit in the process of continuously operating the freezing unit;
and if the outlet water temperature of the freezing unit does not exceed the preset temperature value within the first preset time, verifying that the determination result is correct.
Optionally, the device corresponding to the functional available fault is a valve, and verifying whether the determination result of the functional available fault is correct includes:
monitoring signals of corresponding fault detection points of a chiller in the refrigerating unit and pipeline pressure in the refrigerating unit in the process of continuously operating the refrigerating unit; if the detection signal of the fault detection point position corresponding to the chiller is not a fault signal and the pipeline pressure in the refrigerating unit does not exceed a preset pressure value within a second preset time period, verifying that the determination result is correct; or alternatively
Monitoring the outlet water temperature of the refrigerating unit and the pipeline pressure in the refrigerating unit in the process of continuously operating the refrigerating unit; and if the outlet water temperature of the freezing unit does not exceed the preset temperature value within the first preset time period and the pipeline pressure in the freezing unit does not exceed the preset pressure value within the second preset time period, verifying that the determination result is correct.
Optionally, the fault detection signal is a switching value input signal.
In a second aspect, there is provided a refrigeration unit failure handling apparatus comprising: a memory and a processor electrically connected to the memory, the memory storing a computer program executable by the processor, the computer program implementing the steps of the method according to the first aspect when executed by the processor.
In a third aspect, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to the first aspect.
In the embodiment of the application, fault detection signals of all equipment in the refrigerating unit are monitored in the running process of the refrigerating unit; determining a fault type of the refrigeration unit according to the fault detection signal, wherein the fault type comprises a function available fault and a function unavailable fault; if the fault type is a function available fault, the refrigerating unit is operated continuously, so that the refrigerating unit can continue to provide a normal refrigerating function, the problems of insufficient refrigerating capacity and rising of tail end temperature caused by direct shutdown of the refrigerating unit due to real faults of unavailable non-equipment functions caused by signal transmission and the like are avoided, the refrigerating efficiency of a low system is improved, the performance of the whole cold source group control system is not damaged, and meanwhile, the aim of guaranteeing the safety of the system is fulfilled.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a flow chart of a method for handling a refrigeration unit failure according to an embodiment of the present application.
Fig. 2 is a block diagram illustrating an exemplary structure of a cold source group control system according to an embodiment of the present application.
Fig. 3 is a diagram illustrating an exemplary type of refrigeration unit failure in accordance with an embodiment of the present application.
FIG. 4 is an exemplary diagram of a malfunction upgrade condition for a refrigeration unit in accordance with an embodiment of the present application.
Fig. 5 is a diagram illustrating an overall flow of a method for handling a refrigeration unit failure according to an embodiment of the present application.
Fig. 6 is a block diagram showing the structure of a refrigerating unit failure processing apparatus according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. The reference numerals in the present application are only used for distinguishing the steps in the scheme, and are not used for limiting the execution sequence of the steps, and the specific execution sequence controls the description in the specification.
In order to solve the problems in the prior art, an embodiment of the present application provides a method for processing a fault of a refrigeration unit, and fig. 1 is a schematic flow chart of the method for processing a fault of a refrigeration unit according to the embodiment of the present application, where the method is applied to a target unit controller for controlling a target refrigeration unit.
The cold source group control system can comprise a plurality of unit controllers, each unit controller is used for controlling one refrigeration unit in a one-to-one correspondence mode, and equipment in the refrigeration unit comprises a refrigeration pump, a cooling tower, a chiller, corresponding valves and the like.
Fig. 2 is a block diagram illustrating a structure of a cold source group control system according to an embodiment of the present application, as shown in fig. 2, in which the cold source group control system includes one group control controller and 3 unit controllers, a 1# unit controller, a 2# unit controller, and a 3# unit controller. The unit controllers respectively control the on-off of the equipment and the on-off of the valves of the corresponding freezing units, and each unit controller can interact with the group control controller in a command manner, and the unit controllers are described in the following.
Referring to fig. 1, as shown in fig. 1, a refrigerating unit fault handling method according to an embodiment of the present application includes the following steps 102 to 104:
step 102, monitoring fault detection signals of all equipment in the refrigeration unit during the operation process of the refrigeration unit.
Here, the monitoring operation is performed by a target unit controller of a target refrigeration unit, the equipment in which includes a refrigeration pump, a cooling tower, a chiller, and corresponding valves.
Based on the solution provided in the foregoing embodiment, optionally, in step 102, monitoring a fault detection signal of each device in the refrigeration unit includes: if the target equipment in the refrigerating unit is a refrigerating pump, a cooling tower or a chiller, monitoring a detection signal of a fault detection point corresponding to the target equipment; if the target device is a valve, a feedback signal of the target device after sending an open command or a manual command to the freezer unit is monitored.
For the freezing pump, the cooling tower and the chiller, the corresponding point positions for detecting faults are correspondingly arranged on each device, and the unit controller can acquire corresponding detection signals in real time through the fault detection point positions. The fault detection point of the device may include a point for detecting whether the device has a hardware fault, and may also include a point for detecting whether an on state signal or a manual signal is lost in operation of the device.
Therefore, the hardware fault, the on-state loss or the manual and automatic loss of the equipment can be determined according to the detection signal result through the fault detection point positions arranged on the equipment.
In one embodiment, the fault point may implement detection signal acquisition through a digital input point (DI), i.e., the fault detection signal is a switching value input signal, and the detection signal values may be represented by numerals 0 and 1, respectively.
For example, for a device hardware failure, the failure detection signal value is set to 1. And if the detection signal value detected from the hardware fault point of the current equipment is 1, indicating that the corresponding equipment has hardware faults.
For an on state signal or manual loss of signal fault, the on state signal or manual loss of signal is set to 1. If the detected signal value detected from the current equipment on-state signal loss or manual automatic signal loss fault point is 1, the corresponding equipment is indicated to have on-state signal loss or manual automatic signal loss fault.
For the valve, since the valve itself is not provided with a fault point for detecting the hardware fault or the fault point of the valve, the unit controller may detect the fault detection signal of the valve by first sending an open command or a manual command to the freezing unit, and then according to a feedback signal corresponding to the valve, for example, an open state signal in response to the open command, or a manual signal in response to the manual command, as the detection signal.
Likewise, the fault detection signal is a switching value input signal, and the feedback signal values may be represented using the numbers 0 and 1, respectively.
For example, after the unit controller issues an open command to the target valve, the target valve normally returns an open state signal in response to the open command within a predetermined time, e.g., the open state signal has a value of 1, indicating that the valve is normal. If the open state signal is not transmitted back, the unit controller monitors a feedback signal with a value of 0, and the open state signal loss fault of the valve is indicated.
And 104, determining the fault type of the refrigeration unit according to the fault detection signal, wherein the fault type comprises a function available fault and a function unavailable fault.
Optionally, based on the solution provided in the foregoing embodiment, optionally, in step 106, determining, according to the fault detection signal, a fault type of the refrigeration unit includes at least one of:
if the detection signal of the fault detection point position corresponding to the target equipment is a fault signal, determining that the freezing unit is a function unavailable fault;
if the detection signal of the fault detection point position corresponding to the target equipment is an on-state signal or a manual-automatic signal and the on-state signal or the manual-automatic signal does not meet a preset condition, determining that the freezing unit is a function available fault;
if the feedback signal of the target device is not an on state signal or a manual signal, the refrigeration unit is determined to be a malfunction available for function.
The function unavailable fault includes the above-described equipment hardware fault, i.e., an equipment function unavailable fault, which is an absolute fault. The automatic manual rotary switch also comprises a manual rotary knob or an on command of the control cabinet of each device, which causes the failure of losing the manual automatic signal or the on state signal.
If any one of the devices in the refrigeration unit has a malfunction that is not functional, the refrigeration unit will not function properly. For example, if the fault detection signal value of each device in the refrigeration unit is 0, it indicates that the refrigeration unit has no function disabled fault, and the refrigeration unit can operate normally.
Functional faults include signal transmission faults between the refrigeration unit and the corresponding unit controller, which may be caused by damage to the signal transmission line itself, a signal transmitting or receiving end of the transmission line connection, or a fault detection point.
For example, loosening of a manual or on state signal transmission line of a target device results in a virtual connection, resulting in loss of the manual or on state signal; or, the DI fault detection point is damaged, resulting in that the detection signal cannot be normally acquired.
The corresponding freezing pump, cooling tower and chiller which can be provided with fault detection points, wherein the detected on-state signal or manual-automatic signal does not meet the preset condition, namely if the on-state signal or manual-automatic signal value is preset to be 1 under normal conditions, if the detection signal value is 0, the preset condition is not met, and the fault that the on-state signal or the manual-automatic signal is lost exists in the corresponding equipment is indicated.
In the event of a fault corresponding to the above, the individual devices in the freezer unit are still operating normally, i.e. the device functions are available and therefore belong to a function-available fault.
Referring to fig. 3, fig. 3 shows examples of fault types corresponding to various fault detection results according to an embodiment of the present application. For example, when the fault signals of the cooling pump frequency converter, the cooling pump frequency converter or the cooling tower and the cooling machine corresponding to the serial numbers 1 to 4 are monitored, the hardware fault of the corresponding equipment is indicated, and therefore the fault belongs to the function unavailable fault.
For the fault signals of the on state loss and the manual signal loss of each device in operation, the fault signals indicate that the corresponding device is in a fault but available state, namely, the fault signals belong to the function available faults.
And 106, if the fault type is a function available fault, continuing to operate the refrigeration unit.
As described above, under the condition that the malfunction of the available function occurs, each device in the refrigeration unit still operates normally, and at this time, the refrigeration unit can still provide normal refrigeration function, and the whole cold source group control system is not damaged, so as to achieve the purpose of ensuring the system safety. And under the condition that no redundant refrigerating unit can replace the refrigerating unit, the defects of insufficient refrigerating capacity and rising of tail end temperature caused by directly closing the refrigerating unit can be avoided, so that the refrigerating efficiency of the system is reduced.
In order to further improve the safe operation of the cold source group control system, optionally, the method further comprises: in the process of continuously operating the refrigeration unit, verifying whether a determination result of the functional available fault is correct by combining at least one of a signal of a fault detection point corresponding to target equipment in the refrigeration unit, the water outlet temperature of the refrigeration unit and the pipeline pressure in the refrigeration unit; if the determination is verified to be correct, continuing to operate the refrigeration unit.
The on-state signal or the manual-automatic signal does not meet the preset condition, and may be caused by a fault occurring in a process of a certain device, so that the target fault type can be further verified in a process of continuously running the freezing unit with the function available fault, so as to judge whether the current fault can evolve or be upgraded into the function unavailable fault.
And verifying whether the available faults of the functions are accurate, namely whether the original fault type of the available states is upgraded or evolved into the unavailable fault type of the functions in the process that the freezing unit continues to normally operate in the fault but available states. I.e. whether the fault type of the function available fault remains unchanged or upgrades to the fault type of the function unavailable fault.
For determining whether the fault type is upgraded to an unavailable fault condition, reference may be made to the example of fig. 4.
As shown in fig. 4, the manner in which the functional available failsafe is performed is correspondingly different for different devices. For device hardware failures of sequence numbers 1 to 4, initially determined as a function unavailable failure, no upgrade condition exists subsequently. The faults available for each function of sequence numbers 5 to 13 can be judged in several categories. The cryopump, the cooling pump and the cooling tower may be classified into a first type, the chiller into a second type, and the valve into a third type.
The upgrade determination conditions employed are also different for different refrigeration modes of the refrigeration unit. Refrigeration units typically include three modes of refrigeration: 1. a chiller mode including only chillers; 2. a plate heat exchanger mode comprising only plate heat exchangers; 3. the method comprises a pre-cooling mode of the plate heat exchanger and the cooler, wherein the plate heat exchanger is used for pre-cooling in the pre-cooling mode, and then the cooler is used for cooling to a preset temperature.
Optionally, the device corresponding to the functional available fault is a cryopump, a cooling pump or a cooling tower, and verifying whether the determination result of the functional available fault is correct includes: monitoring a detection signal of a fault detection point position corresponding to a chiller in the refrigerating unit or the water outlet temperature of the refrigerating unit in the process of continuously operating the refrigerating unit; if the detection signal of the fault detection point position corresponding to the chiller is not a fault signal or the water outlet temperature of the freezing unit does not exceed a preset temperature value within a first preset time period, the determination result is verified to be correct.
Verifying whether the fault type of the function available fault of the first type of equipment is upgraded to the fault type of the function unavailable fault, and judging whether the cold machine is in fault shutdown or not according to the upgrading conditions for the precooling mode and the cold machine mode as shown in fig. 4; for the plate change mode, the upgrading condition is judged as whether the water outlet temperature of the refrigerating unit is higher than the set value +2.5deg.C for 1 min.
It should be noted that 2.5 degrees celsius and 1 minute are only examples, and the present application may take other suitable values of the peripheral range of values, and the present application is not limited to this particular embodiment.
Optionally, the device corresponding to the functional available fault is a chiller, and verifying whether the detection result of the functional available fault is correct includes: monitoring the outlet water temperature of the freezing unit in the process of continuously operating the freezing unit; and if the outlet water temperature of the freezing unit does not exceed the preset temperature value within the first preset time, verifying that the determination result is correct.
And verifying whether the fault type of the function available fault of the second type of equipment is upgraded to the fault type of the function unavailable fault, and judging whether the upgrading condition is judging whether the water outlet temperature of the refrigerating unit is higher than the set value +2.5 ℃ for 1 minute, whether the pre-cooling mode, the cooling mode or the plate change mode is adopted as shown in the figure 4.
Optionally, the device corresponding to the functional available fault is a valve, and verifying whether the determination result of the functional available fault is correct includes: monitoring signals of corresponding fault detection points of a chiller in the refrigerating unit and pipeline pressure in the refrigerating unit in the process of continuously operating the refrigerating unit; and if the detection signal of the fault detection point position corresponding to the chiller is not a fault signal and the pipeline pressure in the freezing unit does not exceed the preset pressure value within the second preset time period, verifying that the determination result is correct.
Or, the device corresponding to the functional available fault is a valve, and the verification of whether the determination result of the functional available fault is correct includes: monitoring the outlet water temperature of the refrigerating unit and the pipeline pressure in the refrigerating unit in the process of continuously operating the refrigerating unit; and if the outlet water temperature of the freezing unit does not exceed the preset temperature value within the first preset time period and the pipeline pressure in the freezing unit does not exceed the preset pressure value within the second preset time period, verifying that the determination result is correct.
Verifying whether the fault type of the function available fault of the third type of equipment is upgraded to the fault type of the function unavailable fault, and judging whether the cooling machine is in fault shutdown or not according to the upgrading conditions for the precooling mode and the cooling machine mode as shown in fig. 4; for the plate change mode, judging whether the upgrading condition is that whether the water outlet temperature of the refrigerating unit is higher than a set value +2.5deg.C for 1 minute; it is also possible to determine whether the condition of the upgrade is that the line pressure in the freezer unit is higher than a set value for 10 seconds, without distinguishing between the pre-cooling mode, the chiller mode and the plate change mode.
It should be noted that 10 seconds is only an example, and the present application may take other suitable values within the range around the value, and the present application is not limited to this specific embodiment.
Of course, in case the determination of the functional availability failure is still correct, the freezer unit is continued to be operated.
Through further verifying the available fault of function, can accurately judge the trouble type of freezing unit, avoid the trouble to upgrade and lead to damaging the going on of whole cold source group control system, further ensure high system security. Meanwhile, under the condition that no redundant refrigerating unit can replace the refrigerating unit, the phenomenon that the refrigerating capacity is insufficient due to the fact that the refrigerating unit is directly closed is avoided, the tail end temperature rises, and the refrigerating efficiency of the system is reduced.
In embodiments of the present application, the presence of redundant refrigeration units may not be considered. And if the unit controller determines that the fault type is a function available fault, the unit controller continues to control the refrigerating unit to operate.
The situation that the redundant refrigerating units exist can also be considered, and if the redundant refrigerating units are currently available, whether the fault type is a function available fault or a function unavailable fault, the fault type is switched to the redundant refrigerating units by the group control controller so as to ensure the operation safety of the system to the greatest extent. If a redundant refrigeration unit is not currently available, the refrigeration unit operation may be continued to be controlled by the unit controller for the purpose of improving the refrigeration efficiency of the system.
An embodiment in which redundant refrigeration units are present will now be described with reference to fig. 5, which is an exemplary diagram of the overall flow of a refrigeration unit failure processing method of the embodiment of the present application of fig. 5.
As shown in fig. 5, the method comprises the following steps:
step 202, a target refrigeration unit fails;
step 204, is the unit controller detecting that the type of fault of the refrigeration unit is a function unavailable fault? If yes, sending a fault instruction to the group control controller, and entering step 216; otherwise, go to step 206;
step 206, the unit controller sends a fault instruction to the group control controller; here, the fault instruction may not distinguish the fault type, only inform the group control controller that the target refrigeration unit currently has a fault;
step 208, the group control controller determines whether there are redundant refrigeration units to cut? If yes, go to step 218; otherwise, go to step 210;
step 210, the unit controller controls the target refrigeration unit to continue to operate;
step 212, the unit controller determines if the target refrigeration unit is upgraded to a function unavailable fault? If yes, go to step 222; otherwise, go to step 214;
step 214, the target refrigeration unit continues to operate until the redundant refrigeration unit cutting machine is successful or the manual confirmation is closed;
in step 216, the group control controller determines whether there is a redundant refrigeration unit for switching according to the failure instruction sent by the unit controller? If yes, go to step 218; otherwise, go to step 222;
step 218, the group control controller performs redundant refrigeration unit cutting, and switches the work of the target refrigeration unit to be replaced by the redundant refrigeration unit;
step 220, the group control controller judges whether the redundant refrigerating unit is successfully started or not, and informs the unit controller; if not, go to step 210; otherwise, go to step 222;
step 222, the unit controller sends a shutdown command to the equipment and valves of the target refrigeration unit.
In the embodiment of the application, fault detection signals of all equipment in the refrigerating unit are monitored in the running process of the refrigerating unit; determining a fault type of the refrigeration unit according to the fault detection signal, wherein the fault type comprises a function available fault and a function unavailable fault; if the fault type is a function available fault, the refrigerating unit is operated continuously, so that the refrigerating unit can continue to provide a normal refrigerating function, the problems of insufficient refrigerating capacity and rising of tail end temperature caused by direct shutdown of the refrigerating unit due to real faults of unavailable non-equipment functions caused by signal transmission and the like are avoided, the refrigerating efficiency of a low system is improved, the performance of the whole cold source group control system is not damaged, and meanwhile, the aim of guaranteeing the safety of the system is fulfilled.
In one embodiment, the unit controller is hard-wired to the group control controller, and the hard-wired heartbeat is used as the unit controller to transmit the unavailable fault condition to the group control controller. For example, normally, a hard-wired heartbeat of a 2V signal is sent by the unit controller to the group control controller, and a fault command is sent by the unit controller to the group control controller by sending the 2V signal, and a function available fault signal of a predetermined voltage value is sent to the group control controller. The signal parameters can be configured on the basis of the original circuit, and the wire drawing is not needed again, so that the labor and the circuit cost are reduced.
Optionally, an embodiment of the present application further provides a refrigerating unit fault handling apparatus, and fig. 6 is a block diagram of a structure of the refrigerating unit fault handling apparatus according to the embodiment of the present application.
As shown in fig. 6, the refrigerating unit fault handling apparatus 2000 includes a memory 2200 and a processor 2400 electrically connected to the memory 2200, where the memory 2200 stores a computer program that can be executed by the processor 2400, where the computer program implements each process of any one of the embodiments of the refrigerating unit fault handling method described above, and the same technical effects can be achieved, and for avoiding repetition, a detailed description is omitted herein.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements each process of any one of the above embodiments of the method for processing a fault of a refrigeration unit, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (8)
1. A method of handling a refrigeration unit failure, comprising:
during the running process of the refrigerating unit, monitoring fault detection signals of all equipment in the refrigerating unit, wherein the fault detection signals comprise detection signals of fault detection points, and if target equipment in the refrigerating unit is a refrigerating pump, a cooling tower or a chiller, monitoring the detection signals of the fault detection points corresponding to the target equipment; if the target equipment is a valve, monitoring a feedback signal of the target equipment after the refrigerating unit sends an opening command or a manual command, wherein the fault detection point positions comprise a point position for detecting whether hardware faults exist in the equipment and a point position for detecting whether an opening state signal or a manual signal loss exists in the operation of the equipment;
determining the fault type of the refrigeration unit according to the fault detection signals, wherein the fault type comprises a function available fault and a function unavailable fault, the function unavailable fault comprises a device hardware fault, the function available fault comprises a signal transmission fault between the refrigeration unit and a corresponding unit controller, and if the detection signal of the corresponding fault detection point of the target device is a fault signal, the refrigeration unit is determined to be a function unavailable fault; if the detection signal of the corresponding fault detection point position of the target equipment is an on-state signal or a manual-automatic signal and the on-state signal or the manual-automatic signal does not meet a preset condition, determining that the freezing unit is a function available fault when the target equipment is determined to have the fault of on-state signal loss or manual-automatic signal loss; if the feedback signal of the target device is not an on state signal or a manual signal, determining that the refrigeration unit is a malfunction available for function;
if the fault type is a function available fault, continuing to operate the refrigeration unit.
2. The method as recited in claim 1, further comprising:
in the process of continuously operating the refrigeration unit, verifying whether a determination result of the functional available fault is correct by combining at least one of a signal of a fault detection point corresponding to target equipment in the refrigeration unit, the water outlet temperature of the refrigeration unit and the pipeline pressure in the refrigeration unit;
if the determination is verified to be correct, continuing to operate the refrigeration unit.
3. The method of claim 2, wherein the device corresponding to the functional availability fault is a cryopump, a cooling pump, or a cooling tower, and verifying whether the determination of the functional availability fault is correct comprises:
monitoring a detection signal of a fault detection point position corresponding to a chiller in the refrigerating unit or the water outlet temperature of the refrigerating unit in the process of continuously operating the refrigerating unit;
if the detection signal of the fault detection point position corresponding to the chiller is not a fault signal or the water outlet temperature of the freezing unit does not exceed a preset temperature value within a first preset time period, the determination result is verified to be correct.
4. The method of claim 2, wherein the device corresponding to the function available fault is a chiller, and verifying whether the detection result of the function available fault is correct comprises:
monitoring the outlet water temperature of the freezing unit in the process of continuously operating the freezing unit;
and if the outlet water temperature of the freezing unit does not exceed the preset temperature value within the first preset time, verifying that the determination result is correct.
5. The method of claim 2, wherein the device corresponding to the function available fault is a valve, and verifying whether the determination result of the function available fault is correct comprises:
monitoring signals of corresponding fault detection points of a chiller in the refrigerating unit and pipeline pressure in the refrigerating unit in the process of continuously operating the refrigerating unit; if the detection signal of the fault detection point position corresponding to the chiller is not a fault signal and the pipeline pressure in the refrigerating unit does not exceed a preset pressure value within a second preset time period, verifying that the determination result is correct; or alternatively
Monitoring the outlet water temperature of the refrigerating unit and the pipeline pressure in the refrigerating unit in the process of continuously operating the refrigerating unit; and if the outlet water temperature of the freezing unit does not exceed the preset temperature value within the first preset time period and the pipeline pressure in the freezing unit does not exceed the preset pressure value within the second preset time period, verifying that the determination result is correct.
6. The method of claim 1, wherein the fault detection signal is a switching value input signal.
7. A refrigeration unit failure handling apparatus, comprising: a memory and a processor electrically connected to the memory, the memory storing a computer program executable by the processor, the computer program implementing the steps of the method of any one of claims 1 to 6 when executed by the processor.
8. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, implements the steps of the method according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620354.2A CN114383346B (en) | 2021-12-27 | 2021-12-27 | Method and device for processing fault of refrigerating unit and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620354.2A CN114383346B (en) | 2021-12-27 | 2021-12-27 | Method and device for processing fault of refrigerating unit and computer readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114383346A CN114383346A (en) | 2022-04-22 |
| CN114383346B true CN114383346B (en) | 2023-10-27 |
Family
ID=81198415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111620354.2A Active CN114383346B (en) | 2021-12-27 | 2021-12-27 | Method and device for processing fault of refrigerating unit and computer readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114383346B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01169640A (en) * | 1987-12-25 | 1989-07-04 | Hitachi Ltd | Pseudo trouble generating system for information processor |
| JPH11120154A (en) * | 1997-10-20 | 1999-04-30 | Fujitsu Ltd | Device and method for access control in computer system |
| JP2003254645A (en) * | 2002-02-26 | 2003-09-10 | Mitsubishi Heavy Ind Ltd | Refrigerating device and malfunction detecting method |
| CN102345915B (en) * | 2011-08-02 | 2013-11-27 | 宁波奥克斯电气有限公司 | Fault operation control method of DC (direct current) convertible frequency air conditioner |
| CN104613730A (en) * | 2015-03-05 | 2015-05-13 | 合肥美菱股份有限公司 | Fault operation method for refrigerators, and refrigerator using fault operation method |
| WO2017006474A1 (en) * | 2015-07-09 | 2017-01-12 | 三菱電機株式会社 | Refrigeration cycle device, remote monitoring system, remote monitoring device, and abnormality determination method |
| CN107388721A (en) * | 2017-06-30 | 2017-11-24 | Tcl家用电器（合肥）有限公司 | Fault repairing method, fault restoration device, refrigerator and the computer-readable recording medium of refrigerator air door |
| CN112161377A (en) * | 2020-09-08 | 2021-01-01 | 珠海格力电器股份有限公司 | Unit fault classification processing method and device and air conditioning unit |
-
2021
- 2021-12-27 CN CN202111620354.2A patent/CN114383346B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01169640A (en) * | 1987-12-25 | 1989-07-04 | Hitachi Ltd | Pseudo trouble generating system for information processor |
| JPH11120154A (en) * | 1997-10-20 | 1999-04-30 | Fujitsu Ltd | Device and method for access control in computer system |
| JP2003254645A (en) * | 2002-02-26 | 2003-09-10 | Mitsubishi Heavy Ind Ltd | Refrigerating device and malfunction detecting method |
| CN102345915B (en) * | 2011-08-02 | 2013-11-27 | 宁波奥克斯电气有限公司 | Fault operation control method of DC (direct current) convertible frequency air conditioner |
| CN104613730A (en) * | 2015-03-05 | 2015-05-13 | 合肥美菱股份有限公司 | Fault operation method for refrigerators, and refrigerator using fault operation method |
| WO2017006474A1 (en) * | 2015-07-09 | 2017-01-12 | 三菱電機株式会社 | Refrigeration cycle device, remote monitoring system, remote monitoring device, and abnormality determination method |
| CN107388721A (en) * | 2017-06-30 | 2017-11-24 | Tcl家用电器（合肥）有限公司 | Fault repairing method, fault restoration device, refrigerator and the computer-readable recording medium of refrigerator air door |
| CN112161377A (en) * | 2020-09-08 | 2021-01-01 | 珠海格力电器股份有限公司 | Unit fault classification processing method and device and air conditioning unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114383346A (en) | 2022-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111706959B (en) | Electronic expansion valve fault detection method and device for multi-split air conditioner and air conditioner | |
| US11168913B2 (en) | Control method and control device of air conditioner and air conditioner | |
| CN104122463A (en) | Electronic expansion valve detection method and system | |
| CN106352489A (en) | Air conditioner fault detecting method and system | |
| CN109062184B (en) | Double-machine emergency rescue equipment, fault switching method and rescue system | |
| KR20070046472A (en) | System for diagnosis communication error of air-conditioner and method thereof | |
| CN106338168B (en) | A kind of refrigeration unit control method and system | |
| CN114383346B (en) | Method and device for processing fault of refrigerating unit and computer readable storage medium | |
| CN116085938A (en) | Refrigerant safety control device, air conditioner, method and medium | |
| CN108631360B (en) | Multi-machine load shedding synchronous triggering method and system for single-outlet pumped storage power station | |
| CN112099551B (en) | Transformer cooling control system | |
| CN114165426A (en) | Control system and control method of air compressor unit | |
| KR20120072106A (en) | Apparatus and method for managing defect and maintain of building facility | |
| CN107728047A (en) | Relay detection method and device, relay, storage medium and equipment | |
| CN116613702A (en) | Automatic reclosing control system and method for circuit breaker | |
| CN108870641B (en) | Drive fault detection method and device and air conditioner | |
| CN114279072B (en) | Operation control method and device, electronic equipment and storage medium | |
| CN111649498B (en) | Refrigerator refrigerating system | |
| CN112503722B (en) | Linkage control method and system of equipment, computer equipment and storage medium | |
| CN114790979A (en) | Air compressor control system and method based on DCS control cabinet | |
| CN110542173B (en) | Detection method for multi-split air conditioner | |
| CN118380610A (en) | Purge control method, apparatus and storage medium for fuel cell system | |
| JP5518130B2 (en) | Refrigeration air conditioner | |
| CN113852396B (en) | Data protection control method, device and system | |
| CN114221441A (en) | Circuit protection method, device, equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |