CN101303273A - Method and apparatus for detecting heat pump machine unit malfunction - Google Patents
Method and apparatus for detecting heat pump machine unit malfunction Download PDFInfo
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- CN101303273A CN101303273A CNA2008100316297A CN200810031629A CN101303273A CN 101303273 A CN101303273 A CN 101303273A CN A2008100316297 A CNA2008100316297 A CN A2008100316297A CN 200810031629 A CN200810031629 A CN 200810031629A CN 101303273 A CN101303273 A CN 101303273A
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Abstract
The invention discloses a fault detection method for heat pump units and a device thereof. The method includes the steps that: (a) inlet water temperature, outlet water temperature, inlet refrigerant temperature and outlet refrigerant temperature of a first water-cooled heat exchanger are measured respectively by a temperature sensor, and inlet refrigerant temperature, outlet refrigerant temperature, inlet air temperature and outlet air temperature of an air-cooled heat exchanger or inlet water temperature, outlet water temperature, inlet refrigerant temperature and outlet refrigerant temperature of a second water-cooled heat exchanger are measured respectively by a temperature sensor; (b) the temperature data are transmitted to a data acquisition card or a digital recording instrument; (c) a microcomputer reads the temperature signal on the data acquisition card or the temperature data recorded by the digital recording instrument, runs a fault detection program to make a fault detection analysis on the heat pump units, and displays fault running status and fault alarm. The invention is a fault detection method for heat pump units with easy measuring point arrangement, and is easy to operate and realize. Besides, the device for realizing the method is simple in structure, and is reliable in performance.
Description
Technical field
The present invention relates to a kind of fault detection method, particularly relate to a kind of source pump fault detection method, the invention still further relates to the device of this method of realization.
Background technology
Source pump generally is compression HEAT PUMP TYPE WATER CHILLERS and compression water-water heat pump unit, and the compression HEAT PUMP TYPE WATER CHILLERS comprises first water cooling heat exchanger, four-way valve, compressor, gas-liquid separator and regenerator, device for drying and filtering, reservoir, air cooling heat exchanger and blower fan; Compression water-water heat pump unit comprises first water cooling heat exchanger, four-way valve, compressor, gas-liquid separator and regenerator, device for drying and filtering, reservoir and second water cooling heat exchanger.Source pump adopts clean energy resource, raising energy utilization rate and reduces on the environmental pollution problems in solution and demonstrates the effect that becomes more and more important.Various source pump are extensively utilized in fields such as building heat supplying air-conditioning, waste heat recovery, refrigeration because of its outstanding advantage.But in heat pump, the generation of fault can cause system's abnormal running and cause that performance descends.In general, hard fault is easy to detect and judge, finds and soft fault is difficult.The common soft fault of source pump has: (1) air-side heat exchanger heat-transfer effect is poor; (2) water-side heat discharge reduces; (3) water-side heat fouling; (4) compressor suction and discharge valve block leaks; (5) freezing medium leakage; (6) refrigerant charging is excessive; (7) high-pressure liquid line is obstructed; (8) expansion valve opening is excessive; (9) air or other fouling gass are arranged in the system.Therefore, need to strengthen the fault detect of heat pump, the reason that fault takes place is searched at place and position that the quick diagnosis fault takes place, and the probability that the minimizing fault takes place is very important.
After source pump broke down, the characteristic of system can change, thereby caused the relation between the variable that system can survey also can change.
Summary of the invention
Technical matters to be solved by this invention provides a kind of measuring point and arranges simply, the source pump fault detection method of easy operating and realization.
Second technical matters to be solved by this invention provides a kind of device of realizing this method.
In order to solve the problems of the technologies described above, source pump fault detection method provided by the invention, a, with temperature sensor measure respectively first water cooling heat exchanger inlet water temperature, the outlet water temperature, inlet refrigerant temperature and outlet refrigerant temperature, with temperature sensor measure respectively air cooling heat exchanger inlet refrigerant temperature, the outlet refrigerant temperature, EAT and the leaving air temp or second water cooling heat exchanger inlet water temperature, the outlet water temperature, inlet refrigerant temperature and outlet refrigerant temperature; B, said temperature is transferred to data collecting card or digital recorder; The temperature data of temperature signal on c, the microcomputer reading of data capture card or digital recorder record, and the operation troubles trace routine is carried out fault detection analysis to source pump, demonstration failure operation state and fault alarm.
The device of realization source pump fault detection method provided by the invention, 8 temperature sensors corresponding with each temperature detecting point are electrically connected with 1 microcomputer by one 8 channel data capture card or datalogger, and moving at described microcomputer has 1 fault detection program based on principal component analysis (PCA).
Described temperature sensor is platinum resistance or thermopair, thermistor, copper resistance temperature sensor.
Adopt the source pump fault detection method and the device thereof of technique scheme, utilize the source pump soft fault can cause the characteristics of measurand relationship change, 8 temperature sensors are platinum resistance (or thermopair, thermistor, copper resistance) temperature sensor, a part places the water of source pump heat interchanger or cold-producing medium to import and export below the heat-insulation layer of pipe, and be pasted on the pipeline outer wall, a part is suspended in the air ports place of heat interchanger.Therefore, in fact to record be the duct wall surface temperature or the import and export air themperature of corresponding position to 8 temperature sensors.8 passages of 8 temperature sensors and 8 channel data capture cards join, or are connected on the digital recorder of 8 passages.
Temperature signal on the microcomputer reading of data capture card, or the temperature data of digital recorder record, and the operation troubles trace routine is carried out modeling and fault detection analysis to source pump.
Fault detection program is based on principal component analytical method and the fault detection program that is specifically designed to this patent system worked out, and it has major component modeling function, best major component to determine function, fault detection capability and fault prompting warning function.Fault detection program is set up the major component model of source pump with the temperature data that records under the normal steady working condition, determines number of principal components, calculates detection threshold.
After the major component modelling, read the temperature measuring data under the operating condition, carry out fault detection analysis, show failure operation state and fault alarm.
The variable that this patent need be measured is temperature entirely, and measurand number temperature point little, that need is arranged simple, easy operating and realization; This patent adopts principal component analytical method, utilizes correlativity between the measurement data extraction source pump variable normal steady state condition under to realize fault detect under the fault condition.
This patent is applicable to the refrigeration of compression HEAT PUMP TYPE WATER CHILLERS and compression water-water heat pump unit and the fault detect of heating condition and compression refrigerating machine.
In sum, the present invention is that a kind of measuring point arranges simple, and the source pump fault detection method of easy operating and realization realizes that the apparatus structure of this method is simple, dependable performance.
Description of drawings
Fig. 1 is a source pump fault detect block diagram of the present invention;
Fig. 2 is a HEAT PUMP TYPE WATER CHILLERS temperature point arrangenent diagram.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1,8 platinum resistance corresponding with each temperature detecting point (or thermopair, thermistor, copper resistance) temperature sensor 9 is electrically connected with 1 microcomputer 11 by one 8 channel data capture card or datalogger 10, and moving in microcomputer 11 has 1 fault detection program based on principal component analysis (PCA).
Different source pump is under different operating modes, and the measurand that its 8 platinum resistance (or thermopair, thermistor, copper resistance) temperature sensor is surveyed is as shown in table 1.They at the distributing position of HEAT PUMP TYPE WATER CHILLERS as shown in Figure 2.For the water-water heat pump unit, the surface exchanger among Fig. 2 becomes second plate type heat exchanger, and what T7 and T8 measured is that second plate type heat exchanger is imported and exported water temperature.
The measurand of table 1 temperature sensor
Arrange that below by HEAT PUMP TYPE WATER CHILLERS temperature point under the refrigerating state the invention will be further described.
Referring to Fig. 1 and Fig. 2, the compression HEAT PUMP TYPE WATER CHILLERS comprises the first board-like water cooling heat exchanger 1, four-way valve 3, compressor 2, gas-liquid separator and regenerator 8, device for drying and filtering 7, reservoir 4, surface wind cold heat exchanger 5, blower fan 6 and throttling valve 11,8 platinum resistance (or thermopairs, thermistor, copper resistance) temperature sensor 9 is measured the inlet water temperature T1 of first plate type heat exchanger 1 respectively, outlet water temperature T 2, inlet refrigerant temperature T4 and outlet refrigerant temperature T3 are with the inlet refrigerant temperature T5 of temperature sensor difference surface measurements heat interchanger 5, outlet refrigerant temperature T6, EAT T7 and leaving air temp T8; 6 platinum resistance (or thermopair, thermistor, copper resistance) temperature sensor 9 places respectively below the water of first plate type heat exchanger 1 and surface exchanger 5 or the heat-insulation layer that cold-producing medium is imported and exported pipe, and be pasted on the pipeline outer wall, 2 platinum resistance (or thermopair, thermistor, copper resistance) temperature sensor 9 is suspended in the air ports place of surface exchanger 5 respectively.Therefore, in fact temperature sensor 9 records respectively 8 platinum resistance (or thermopair, thermistor, copper resistance) is the duct wall surface temperature or the import and export air themperature of corresponding position.8 passages of 8 platinum resistance (or thermopair, thermistor, copper resistance) temperature sensor 9 and 8 channel data capture cards join, or are connected on the digital recorder of 8 passages.
Temperature signal on the microcomputer 12 reading of data capture cards 11, or the temperature data of digital recorder 11 records, and the operation troubles trace routine is carried out modeling and fault detection analysis to source pump.
Fault detection program is based on principal component analytical method and the fault detection program that is specifically designed to this patent system worked out, and it has major component modeling function, best major component to determine function, fault detection capability and fault prompting warning function.Fault detection program is set up the major component model of source pump with the temperature data that records under the normal steady working condition, determines number of principal components, calculates detection threshold.
After the major component modelling, read the temperature measuring data under the operating condition, carry out fault detection analysis, show failure operation state and fault alarm.
For the water-water heat pump unit, the surface wind cold heat exchanger 5 among Fig. 2 becomes the second board-like water cooling heat exchanger, and what T7 and T8 measured is that the second board-like water cooling heat exchanger is imported and exported water temperature.
This patent is applicable to the refrigeration of compression HEAT PUMP TYPE WATER CHILLERS and compression water-water heat pump unit and the fault detect of heating condition and compression refrigerating machine.
Claims (4)
1, a kind of source pump fault detection method, it is characterized in that: a, with temperature sensor measure respectively first water cooling heat exchanger inlet water temperature, the outlet water temperature, inlet refrigerant temperature and outlet refrigerant temperature, with temperature sensor measure respectively air cooling heat exchanger inlet refrigerant temperature, the outlet refrigerant temperature, EAT and the leaving air temp or second water cooling heat exchanger inlet water temperature, the outlet water temperature, inlet refrigerant temperature and outlet refrigerant temperature; B, said temperature is transferred to data collecting card or digital recorder; The temperature data of temperature signal on c, the microcomputer reading of data capture card or digital recorder record, and the operation troubles trace routine is carried out fault detection analysis to source pump, demonstration failure operation state and fault alarm.
2, source pump fault detection method according to claim 1, it is characterized in that: a described temperature sensor part places the water of heat interchanger or cold-producing medium to import and export below the heat-insulation layer of pipe, and be pasted on the pipeline outer wall, or a part is suspended in the air ports place of heat interchanger.
3, realize the device of the described source pump fault detection method of claim 1, it is characterized in that: 8 temperature sensors corresponding with each temperature detecting point are electrically connected with 1 microcomputer (12) by one 8 channel data capture card or datalogger (11), and moving at described microcomputer (12) has 1 fault detection program based on principal component analysis (PCA).
4, the device of realization source pump fault detection method according to claim 3 is characterized in that: described temperature sensor is platinum resistance or thermopair, thermistor, copper resistance temperature sensor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100316297A CN101303273A (en) | 2008-06-30 | 2008-06-30 | Method and apparatus for detecting heat pump machine unit malfunction |
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| CNA2008100316297A CN101303273A (en) | 2008-06-30 | 2008-06-30 | Method and apparatus for detecting heat pump machine unit malfunction |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949741A (en) * | 2010-08-13 | 2011-01-19 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for measuring temperature of inner ring and outer ring of bearing between double-rotor engine rotors |
| CN102829991A (en) * | 2012-09-21 | 2012-12-19 | 三一重机有限公司 | Fault detection system, fault detection method and module |
| CN103454924A (en) * | 2013-08-20 | 2013-12-18 | 江苏天舒电器有限公司 | On-line self-diagnosis control method for heat pump water heater and on-line self-diagnosis control device of heat pump water heater |
| CN103759860A (en) * | 2014-02-20 | 2014-04-30 | 北京七星华创电子股份有限公司 | Thermocouple fault diagnosis and processing method and system of semiconductor heat treatment device |
| CN104266855A (en) * | 2013-08-20 | 2015-01-07 | 江苏天舒电器有限公司 | Heat pump water heater diagnosis device and control method thereof |
| CN104501403A (en) * | 2013-07-09 | 2015-04-08 | 广东美的暖通设备有限公司 | Control system and method of water heater |
| CN106871389A (en) * | 2017-04-19 | 2017-06-20 | 河南工业大学 | The active method for diagnosing faults of variable air volume air handling group |
| CN111190375A (en) * | 2020-01-21 | 2020-05-22 | 武汉瑞莱保能源技术有限公司 | Intelligent monitoring system and monitoring method for hydropower station equipment |
| CN111457546A (en) * | 2020-05-22 | 2020-07-28 | 北京工业大学 | Dirty blocking fault detection device and method for air-cooled cold water (heat pump) unit |
| CN113882130A (en) * | 2020-07-02 | 2022-01-04 | 青岛海尔滚筒洗衣机有限公司 | Fault detection method for heat pump type clothes drying equipment |
| CN114248995A (en) * | 2020-09-22 | 2022-03-29 | 佳能医疗系统株式会社 | Biochemical analyzer and reagent storage |
-
2008
- 2008-06-30 CN CNA2008100316297A patent/CN101303273A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949741A (en) * | 2010-08-13 | 2011-01-19 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for measuring temperature of inner ring and outer ring of bearing between double-rotor engine rotors |
| CN102829991A (en) * | 2012-09-21 | 2012-12-19 | 三一重机有限公司 | Fault detection system, fault detection method and module |
| CN104501403B (en) * | 2013-07-09 | 2018-05-08 | 广东美的暖通设备有限公司 | Hot water machine control system and hot water machine control method |
| CN104501403A (en) * | 2013-07-09 | 2015-04-08 | 广东美的暖通设备有限公司 | Control system and method of water heater |
| CN103454924A (en) * | 2013-08-20 | 2013-12-18 | 江苏天舒电器有限公司 | On-line self-diagnosis control method for heat pump water heater and on-line self-diagnosis control device of heat pump water heater |
| CN104266855A (en) * | 2013-08-20 | 2015-01-07 | 江苏天舒电器有限公司 | Heat pump water heater diagnosis device and control method thereof |
| CN103454924B (en) * | 2013-08-20 | 2015-09-30 | 江苏天舒电器有限公司 | A kind of online self diagnosis control method of heat pump water-heating machine and control device thereof |
| CN104266855B (en) * | 2013-08-20 | 2017-02-15 | 江苏天舒电器有限公司 | Heat pump water heater diagnosis device and control method thereof |
| CN103759860A (en) * | 2014-02-20 | 2014-04-30 | 北京七星华创电子股份有限公司 | Thermocouple fault diagnosis and processing method and system of semiconductor heat treatment device |
| CN106871389A (en) * | 2017-04-19 | 2017-06-20 | 河南工业大学 | The active method for diagnosing faults of variable air volume air handling group |
| CN106871389B (en) * | 2017-04-19 | 2019-06-28 | 河南工业大学 | The active method for diagnosing faults of variable air volume air handling group |
| CN111190375A (en) * | 2020-01-21 | 2020-05-22 | 武汉瑞莱保能源技术有限公司 | Intelligent monitoring system and monitoring method for hydropower station equipment |
| CN111457546A (en) * | 2020-05-22 | 2020-07-28 | 北京工业大学 | Dirty blocking fault detection device and method for air-cooled cold water (heat pump) unit |
| CN113882130A (en) * | 2020-07-02 | 2022-01-04 | 青岛海尔滚筒洗衣机有限公司 | Fault detection method for heat pump type clothes drying equipment |
| CN113882130B (en) * | 2020-07-02 | 2023-09-22 | 重庆海尔滚筒洗衣机有限公司 | Fault detection method of heat pump type clothes drying equipment |
| CN114248995A (en) * | 2020-09-22 | 2022-03-29 | 佳能医疗系统株式会社 | Biochemical analyzer and reagent storage |
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Open date: 20081112 |