CN109282421B - Fault diagnosis simulation device for water chilling unit - Google Patents
Fault diagnosis simulation device for water chilling unit Download PDFInfo
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- CN109282421B CN109282421B CN201810908778.0A CN201810908778A CN109282421B CN 109282421 B CN109282421 B CN 109282421B CN 201810908778 A CN201810908778 A CN 201810908778A CN 109282421 B CN109282421 B CN 109282421B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- General Engineering & Computer Science (AREA)
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- Biomedical Technology (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a fault diagnosis simulation device for a water chilling unit, which comprises a refrigerant loop with an evaporator and a condenser, a cooling water-tap water heat exchanger, a cooling water-chilled water heat exchanger, a steam-hot water heat exchanger and a chilled water-hot water heat exchanger, wherein a chilled water outlet of the evaporator is connected with a chilled water inlet of the cooling water-chilled water heat exchanger, a chilled water outlet of the cooling water-chilled water heat exchanger is connected with a chilled water inlet of the chilled water-hot water heat exchanger, and a chilled water outlet of the chilled water-hot water heat exchanger is connected with a chilled water return port of the evaporator. The device can detect, diagnose and predict faults in time, and has remarkable economic and social benefits and simple structure.
Description
Technical Field
The invention relates to a fault diagnosis simulation device for a water chilling unit. Belongs to the technical field of refrigeration air conditioners.
Background
The application of air-conditioning refrigeration systems has penetrated into various fields of society, the scale of the systems and automatic control systems is increased year by year, the selection of main components, auxiliary accessories and control elements has diversity, circulating substances in the systems have certain complexity, and various faults can inevitably occur in the operation process of the systems. At the moment, the system output is inconsistent with the expectation, namely, the functions specified by the original design are lost, the reliability and the safety of the system operation are influenced, and the fault diagnosis is carried out on the air-conditioning cooling system so as to ensure the normal operation of the system, discover and maintain in time and reduce the loss, thereby having certain practical significance.
The faults of the air-conditioning refrigeration system can be divided into local faults and system faults, wherein the faults comprise faults of insufficient water flow of a heat exchanger, damage of a suction valve and an exhaust valve of a compressor, abnormal temperature of an inlet and an outlet of cooling water, scaling of the heat exchanger, non-condensable gas contained in a condenser, blockage of a filter and a capillary tube, stop of a fan and the like; the latter includes inadequate refrigerant and lubricant content. The selected fault diagnosis parameters can be divided into parameters directly measured by a sensor and parameters obtained by calculation, and the parameters directly measured by the sensor are temperature parameters, pressure parameters and other signals of each circulation link of the system, such as condenser water flow, power consumption and the like; the parameters obtained by calculation include refrigerating capacity, COP and the like.
The fault diagnosis simulation device for the water chilling unit is designed, can simulate various water chilling unit faults, obtains a large amount of data, timely detects, diagnoses and predicts the faults, is favorable for saving energy, reduces equipment loss, prolongs the service life of equipment, reduces the operating cost of a system, maintains the comfort level of an indoor environment and protects the atmospheric environment.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a fault diagnosis simulation device for a water chilling unit, which is simple in structure, can simulate typical faults of the water chilling unit under different common working conditions, and provides a large amount of fault operation data of the water chilling unit for a fault diagnosis system.
In order to achieve the purpose, the invention provides a fault diagnosis simulation device of a water chilling unit, which comprises a refrigerant loop with an evaporator and a condenser, a cooling water-tap water heat exchanger, a cooling water-chilled water heat exchanger, a steam-hot water heat exchanger and a chilled water-hot water heat exchanger, wherein a chilled water outlet of the evaporator is connected with a chilled water inlet of the cooling water-chilled water heat exchanger, a chilled water outlet of the cooling water-chilled water heat exchanger is connected with a chilled water inlet of the chilled water-hot water heat exchanger, a chilled water outlet of the chilled water-hot water heat exchanger is connected with a chilled water return port of the evaporator, a hot water outlet of the steam-hot water heat exchanger is connected with a hot water inlet of the chilled water-hot water heat exchanger, a hot water outlet of the chilled water-hot water heat exchanger is connected with a hot water return port of the steam-hot water heat exchanger, a cooling water outlet of the condenser is connected with a cooling water inlet of the cooling water-tap water, and a cooling water outlet of the cooling water-tap water heat exchanger is connected with a cooling water inlet of the cooling water-chilled water heat exchanger, and a cooling water outlet of the cooling water-chilled water heat exchanger is connected with a cooling water inlet of the condenser.
Preferably, an evaporator water outlet temperature sensor, a chilled water pump and an electric control valve for chilled water are sequentially arranged on a pipeline connecting a chilled water outlet of the evaporator and a chilled water inlet of the cooling water-chilled water heat exchanger according to the water flow direction.
Preferably, a chilled water flow meter and a chilled water inlet temperature sensor are sequentially arranged on a pipeline connecting a chilled water outlet of the chilled water-chilled water heat exchanger and a chilled water inlet of the chilled water-hot water heat exchanger according to the water flow direction.
Preferably, a chilled water outlet temperature sensor and an evaporator inlet temperature sensor are sequentially arranged on a pipeline, which is connected with a chilled water return port of the evaporator, of a chilled water outlet of the chilled water-hot water heat exchanger according to the water flow direction.
Preferably, a hot water inlet temperature sensor and a hot water pump are sequentially arranged on a pipeline, connected with a hot water outlet of the steam-hot water heat exchanger and a hot water inlet of the chilled water-hot water heat exchanger, according to a water flow direction, and a hot water outlet temperature sensor and an electric regulating valve for hot water are sequentially arranged on a pipeline, connected with a hot water return port of the steam-hot water heat exchanger, of the chilled water-hot water heat exchanger according to the water flow direction.
Preferably, a pipeline connecting a cooling water outlet of the condenser and a cooling water inlet of the cooling water-tap water heat exchanger is sequentially provided with a condenser water outlet temperature sensor and a cooling water pump according to the water flow direction, a cooling water flowmeter and a cooling water-chilled water heat exchanger water inlet temperature sensor are sequentially arranged on a pipeline connecting a cooling water outlet of the cooling water-tap water heat exchanger and a cooling water inlet of the cooling water-chilled water heat exchanger according to the water flow direction, the pipeline that the cooling water entry linkage of cooling water-refrigerated water heat exchanger's cooling water export and condenser is equipped with cooling water-refrigerated water heat exchanger according to the rivers direction in proper order and goes out water temperature sensor, electron tee bend mixing valve, for the cooling water electric control valve and condenser temperature sensor that intakes, the output of cooling water flowmeter still is connected with electron tee bend mixing valve through the bypass valve.
Preferably, a tap water inlet of the cooling water-tap water heat exchanger and a tap water supply device for inputting tap water into the cooling water-tap water heat exchanger are provided, a tap water inlet temperature sensor is arranged on a pipeline connecting the tap water inlet of the cooling water-tap water heat exchanger and the tap water supply device, and a tap water outlet temperature sensor and an electric regulating valve for tap water are sequentially arranged on a pipeline connecting the tap water outlet of the cooling water-tap water heat exchanger and the tap water recovery device according to a water flow direction.
Preferably, the refrigerant circuit is formed by connecting a compressor, a condenser, an expansion valve, and an evaporator in this order.
Preferably, an electric control valve for steam is provided on a pipe connecting a steam inlet of the steam-hot water heat exchanger and a steam supply device for supplying steam to the steam-hot water heat exchanger, and a steam outlet of the steam-hot water heat exchanger is connected to a steam recovery device.
The invention has the beneficial effects that: the method can simulate the common typical faults of the water chilling unit, the simulated 27 working conditions basically cover the operating working conditions of the common water chilling unit, and a large number of parameter samples are provided when the water chilling unit is in the fault operating state. The device can detect, diagnose and predict faults in time, and has remarkable economic and social benefits and simple structure.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a fault diagnosis simulation device for a water chilling unit according to the present invention.
In the figure: 1-evaporator, 2-condenser, 3-cooling water-tap water heat exchanger, 4-cooling water-chilled water heat exchanger, 5-steam-hot water heat exchanger, 6-chilled water-hot water heat exchanger, 7-tap water supply device, 8-electric control valve for cooling water, 9-electronic three-way mixing valve, 10-electric control valve for tap water, 11-electric control valve for chilled water, 12-electric control valve for hot water, 13-electric control valve for steam, 14-cooling water flowmeter, 15-chilled water flowmeter, 16-cooling water pump, 17-chilled water pump, 18-hot water pump, 19-condenser inlet water temperature sensor, 20-condenser outlet water temperature sensor, 21-evaporator inlet water temperature sensor, 21-condenser inlet water temperature sensor, 9-electronic three-way mixing valve, and 9-electronic three-way mixing, 22-evaporator water outlet temperature sensor, 23-tap water inlet temperature sensor, 24-tap water outlet temperature sensor, 25-cooling water-chilled water heat exchanger water inlet temperature sensor, 26-cooling water-chilled water heat exchanger water outlet temperature sensor, 27-chilled water inlet temperature sensor, 28-chilled water outlet temperature sensor, 29-hot water inlet temperature sensor, 30-hot water outlet temperature sensor, 31-steam supply device, 32-steam recovery device, 33-bypass valve and 34-tap water recovery device.
Detailed Description
Referring to fig. 1, the fault diagnosis simulation device for the water chilling unit of the invention comprises a refrigerant loop with an evaporator 1 and a condenser 2, a cooling water-tap water heat exchanger 3, a cooling water-chilled water heat exchanger 4, a steam-hot water heat exchanger 5 and a chilled water-hot water heat exchanger 6, wherein a chilled water outlet of the evaporator 1 is connected with a chilled water inlet of the cooling water-chilled water heat exchanger 4, a chilled water outlet of the cooling water-chilled water heat exchanger 4 is connected with a chilled water inlet of the chilled water-hot water heat exchanger 6, a chilled water outlet of the chilled water-hot water heat exchanger 6 is connected with a chilled water return port of the evaporator 1, a hot water outlet of the steam-hot water heat exchanger 5 is connected with a hot water inlet of the chilled water-hot water heat exchanger 6, a hot water outlet of the chilled water-hot water heat exchanger 6 is connected with a hot water return port of the steam-hot water heat exchanger 5, the cooling water outlet of the condenser 2 is connected with the cooling water inlet of the cooling water-tap water heat exchanger 3, the cooling water outlet of the cooling water-tap water heat exchanger 3 is connected with the cooling water inlet of the cooling water-chilled water heat exchanger 4, the cooling water outlet of the cooling water-chilled water heat exchanger 4 is connected with the cooling water inlet of the condenser 2, an evaporator water outlet temperature sensor 22, a chilled water pump 17 and an electric adjusting valve 11 for chilled water are sequentially arranged on a pipeline connected with the chilled water inlet of the cooling water-chilled water heat exchanger 4 and the chilled water inlet of the cooling water-chilled water heat exchanger 6 according to the water flow direction, a chilled water flow meter 15 and a chilled water inlet temperature sensor 27 are sequentially arranged on a pipeline connected with the chilled water inlet of the chilled water-chilled water heat exchanger 6 according to the water flow direction, and the chilled water outlet of the chilled water-chilled water heat exchanger 6 is connected with the chilled water return port of the evaporator 1 A chilled water outlet temperature sensor 28 and an evaporator inlet temperature sensor 21 are sequentially arranged in the water flow direction, a hot water inlet temperature sensor 29 and a hot water pump 18 are sequentially arranged in the water flow direction on a pipeline connected with a hot water outlet of the steam-hot water heat exchanger 5 and a hot water inlet of the chilled water-hot water heat exchanger 6, a hot water outlet temperature sensor 30 and an electric control valve 12 for hot water are sequentially arranged in the water flow direction on a pipeline connected with a hot water return port of the steam-hot water heat exchanger 5 in the chilled water-hot water heat exchanger 6, a condenser outlet temperature sensor 20 and a cooling water pump 16 are sequentially arranged in the water flow direction on a pipeline connected with a cooling water inlet of the cooling water-tap water heat exchanger 3 in the cooling water outlet of the condenser 2, and a cooling water inlet of the cooling water-chilled water heat exchanger 4 are sequentially arranged in the water flow direction on a pipeline connected with a cooling water outlet of the cooling water-tap water heat exchanger 3 and a cooling Meter 14 and cooling water-chilled water heat exchanger temperature sensor 25 that intakes, be equipped with cooling water-chilled water heat exchanger play water temperature sensor 26, electron tee bend mixing valve 9, electric control valve 8 and condenser intake temperature sensor 19 for the cooling water on the pipeline of the cooling water exit of cooling water-chilled water heat exchanger 4 and the cooling water entry of condenser 2 according to the rivers direction in proper order, cooling water flowmeter 14's output still is connected with electron tee bend mixing valve 9 through bypass valve 33, the running water import of cooling water-running water heat exchanger 3 with be used for the running water supply device 7 with running water input cooling water-running water heat exchanger 3, be equipped with running water intake temperature sensor 23 on the pipeline that the running water import of cooling water-running water heat exchanger 3 and running water supply device 7 are connected, be connected according to rivers direction on the pipeline of the running water export of cooling water-running water heat exchanger 3 and running water recovery unit 34 The system is characterized in that a tap water outlet temperature sensor 24 and an electric regulating valve 10 for tap water are sequentially arranged, a refrigerant loop is formed by sequentially connecting a compressor, a condenser 2, an expansion valve and an evaporator 1, the electric regulating valve 13 for steam is arranged on a pipeline connecting a steam inlet of the steam-hot water heat exchanger 5 and a steam supply device 31 for supplying steam to the steam-hot water heat exchanger 5, and a steam outlet of the steam-hot water heat exchanger 5 is connected with a steam recovery device 32.
The working process of the invention is as follows:
in the working process of the fault diagnosis simulation device of the water chilling unit, chilled water output by the evaporator 1 in a chilled water loop is regulated by the cooling water-chilled water heat exchanger 4. The bypass valve 33 is used for adjusting the amount of cooling water so as to enable the outlet water temperature of the chilled water to reach the required working condition. The chilled water reaching the required working condition after the temperature of the chilled water is adjusted passes through the chilled water-heat water exchanger 6, is heated therein, is equivalent to the condition of the user use side in the actual air conditioning system, and then returns to the evaporator 1 to complete the circulation.
In the cooling water loop, the cooling water heated after the cooling water exchanges heat with the refrigerant through the condenser 2 transfers heat to the tap water through the cooling water-tap water heat exchanger 3, the cooling water is cooled, the device is equivalent to a cooling device in an actual air conditioning system, one part of the cooled cooling water is used for adjusting the temperature of the chilled water to a required working condition through the cooling water-chilled water heat exchanger 4, then the cooled cooling water enters the electronic three-way mixing valve 9 and is mixed with the other part of the cooling water entering the electronic three-way mixing valve 9 from the bypass valve 33, and then the cooled cooling water returns to the condenser 2 to complete heat exchange with the refrigerant, so that circulation is completed, wherein the water inlet temperature of the cooling water can be controlled through the electric regulating valve 10.
In the hot water loop, high-temperature water heated by the steam-hot water heat exchanger 5 is led to the chilled water-hot water heat exchanger 6, heat is transferred to chilled water for simulating building load in an actual air conditioner, and cooled hot water in the chilled water-hot water heat exchanger 6 returns to the steam-hot water heat exchanger 5 to complete circulation. The temperature of the hot water can be adjusted through the electric adjusting valve 13 for steam, and the electric adjusting valve is used for simulating and adjusting the load of the unit.
Tap water is supplied to the cooling water-tap water heat exchanger 3 from the tap water supply device 7, has a constant water temperature, and is mainly used for cooling the cooling water. The water inlet temperature of the cooling water of the water chilling unit is controlled by adjusting the electric control valve 10 for tap water, and the water chilling unit is used for simulating different working conditions of the unit.
The steam supply device 31 supplies steam to the steam-hot water heat exchanger 5, has a high heating effect, and is mainly used for heating circulating hot water. The temperature of the hot water is controlled by adjusting the electric adjusting valve 13 for steam, so as to simulate different unit loads.
Different operation conditions of the water chilling unit are mainly realized by adjusting the chilled water outlet temperature, the cooling water return temperature and the load factor of the water chilling unit. The temperature of the chilled water is mainly regulated by an evaporator 1 and a cooling water-chilled water heat exchanger 4; the temperature of the cooling water is mainly regulated by a condenser 2 and a cooling water-tap water heat exchanger 3; the load factor of the unit is mainly controlled by adjusting the temperature of hot water, and the temperature of the hot water is mainly adjusted by an electric adjusting valve 13 for steam in a hot water loop and a steam-hot water heat exchanger 5.
Different operation conditions of the water chilling unit are mainly realized by adjusting the chilled water outlet temperature, the cooling water return temperature and the load factor of the water chilling unit. The setting of the outlet water temperature of the chilled water is mainly divided into three levels of 4.4 ℃, 7.2 ℃ and 10 ℃, the outlet water temperature is measured by an evaporator outlet water temperature sensor 22, the return water temperature of the cooling water is mainly divided into three levels of 15.6 ℃, 23.9 ℃ and 29.4 ℃, the inlet water temperature is measured by a condenser inlet water temperature sensor 19, and the load factor of the unit is adjusted within the range of 25-100%. The three variables are respectively in three different grades, and 27 different working condition combinations are provided. The normal condition and each fault condition of the unit are tested under 27 conditions respectively, the running conditions of the common water chilling unit are basically covered, and normal running data under each working condition are tested into two groups for comparison with the unit running parameters under the corresponding fault occurrence condition.
The device simulates normal operating conditions and 6 typical failure refrigerant leaks, refrigerant excess, cooling water deficiency, chilled water deficiency, lube excess and condenser fouling, and each failure contains 4 failure severity levels, 10%, 20%, 30% and 40%, respectively.
The refrigerant leakage fault is simulated by reducing the amount of refrigerant in the refrigerating unit, the refrigerant in the unit is 136kg under normal conditions, the fault grades are reduced by 10 percent, 20 percent, 30 percent and 40 percent in sequence and are changed into 122kg, 109kg, 95kg and 82 kg; the refrigerant excess fault is simulated by increasing the refrigerant amount in the refrigerating unit, the refrigerant in the unit is 136kg under normal conditions, the fault levels are increased by 10%, 20%, 30% and 40% in sequence and become 150kg, 163kg, 177kg and 191 kg; the fault of insufficient cooling water is simulated by reducing the flow of cooling water in a cooling water loop, and the flow of cooling water under the normal working condition of the loop is 61 m3The fault severity levels are respectively reduced by 10%, 20%, 30% and 40% when increasing in sequence, and become 54.9 m3/h、49 m3/h、42.9 m3/h、36.8 m3H; the fault of insufficient chilled water is simulated by reducing the flow of chilled water in a chilled water loop, and the flow of the chilled water under the normal condition is 49m3The fault severity levels are respectively reduced by 10%, 20%, 30% and 40% when increasing in sequence, and become 44 m3/h、39.3 m3/h、34.3 m3/h、29.5 m3H; the excessive lubricating oil fault is simulated by increasing the lubricating oil quantity in the compressor, the lubricating oil quantity in a normal state is 10kg, and the lubricating oil quantity is respectively increased by 10%, 20%, 30% and 40% according to different severity grades to 11kg, 12kg, 13kg and 14 kg; the scaling fault of the condenser is simulated by adopting a method of blocking a condenser pipe, 164 heat exchange pipes are arranged under a normal condition, the fault severity grades are gradually increased and respectively reduced by 10%, 20%, 30% and 40%, and 148, 131, 115 and 98 can be used.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (9)
1. The utility model provides a cooling water set fault diagnosis analogue means which characterized in that: the system comprises a refrigerant loop with an evaporator (1) and a condenser (2), a cooling water-tap water heat exchanger (3), a cooling water-chilled water heat exchanger (4), a steam-hot water heat exchanger (5) and a chilled water-hot water heat exchanger (6), wherein a chilled water outlet of the evaporator (1) is connected with a chilled water inlet of the cooling water-chilled water heat exchanger (4), a chilled water outlet of the cooling water-chilled water heat exchanger (4) is connected with a chilled water inlet of the chilled water-hot water heat exchanger (6), a chilled water outlet of the chilled water-hot water heat exchanger (6) is connected with a chilled water return port of the evaporator (1), a hot water outlet of the steam-hot water heat exchanger (5) is connected with a hot water inlet of the chilled water-hot water heat exchanger (6), a hot water outlet of the chilled water-hot water heat exchanger (6) is connected with a hot water return port of the steam-hot water heat exchanger (5), the cooling water outlet of the condenser (2) is connected with the cooling water inlet of the cooling water-tap water heat exchanger (3), the cooling water outlet of the cooling water-tap water heat exchanger (3) is connected with the cooling water inlet of the cooling water-chilled water heat exchanger (4), and the cooling water outlet of the cooling water-chilled water heat exchanger (4) is connected with the cooling water inlet of the condenser (2).
2. The water chilling unit fault diagnosis simulation device according to claim 1, wherein: an evaporator water outlet temperature sensor (22), a chilled water pump (17) and an electric control valve (11) for chilled water are sequentially arranged on a pipeline for connecting a chilled water outlet of the evaporator (1) and a chilled water inlet of the cooling water-chilled water heat exchanger (4) according to the water flow direction.
3. The water chilling unit fault diagnosis simulation device according to claim 1, wherein: and a chilled water flowmeter (15) and a chilled water inlet temperature sensor (27) are sequentially arranged on a pipeline connected with a chilled water outlet of the chilled water-chilled water heat exchanger (4) and a chilled water inlet of the chilled water-hot water heat exchanger (6) according to the water flow direction.
4. The water chilling unit fault diagnosis simulation device according to claim 1, wherein: the chilled water outlet of the chilled water-hot water heat exchanger (6) is connected with the chilled water return port of the evaporator (1) through a pipeline, and a chilled water outlet temperature sensor (28) and an evaporator water inlet temperature sensor (21) are sequentially arranged on the pipeline according to the water flow direction.
5. The water chilling unit fault diagnosis simulation device according to claim 1, wherein: the pipeline that the hot water export of steam-hot water heat exchanger (5) and the hot water inlet of refrigerated water-hot water heat exchanger (6) are connected is equipped with hot water temperature sensor (29) and hot-water pump (18) in proper order according to the rivers direction on, be equipped with hot water temperature sensor (30) and for hot water electric control valve (12) according to the rivers direction in proper order on the pipeline that the hot water export of refrigerated water-hot water heat exchanger (6) and the hot water backward flow mouth of steam-hot water heat exchanger (5) are connected.
6. The water chilling unit fault diagnosis simulation device according to claim 1, wherein: the condenser outlet water temperature sensor (20) and the cooling water pump (16) are sequentially arranged on a pipeline connected with a cooling water inlet of the cooling water-tap water heat exchanger (3) and a cooling water outlet of the condenser (2) according to the water flow direction, a cooling water flowmeter (14) and a cooling water-chilled water heat exchanger inlet water temperature sensor (25) are sequentially arranged on a pipeline connected with a cooling water inlet of the cooling water-chilled water heat exchanger (3) and a cooling water-chilled water heat exchanger inlet water temperature sensor (4) according to the water flow direction, a cooling water-chilled water heat exchanger outlet water temperature sensor (26), an electronic three-way mixing valve (9), an electric control valve (8) for cooling water and a condenser inlet water temperature sensor (19) are sequentially arranged on a pipeline connected with a cooling water inlet of the condenser (2) and a cooling water outlet of the cooling water-chilled water heat exchanger according to the water flow direction, the output end of the cooling water flow meter (14) is also connected with an electronic three-way mixing valve (9) through a bypass valve (33).
7. The water chilling unit fault diagnosis simulation device according to claim 1, wherein: the utility model discloses a cooling water, including cooling water-running water heat exchanger (3), the running water import of cooling water-running water heat exchanger (3) with be used for importing running water into running water supply device (7) of cooling water-running water heat exchanger (3), be equipped with running water temperature sensor (23) of intaking on the pipeline that the running water import of cooling water-running water heat exchanger (3) and running water supply device (7) are connected, be equipped with running water play water temperature sensor (24) and running water in proper order according to the rivers direction on the pipeline that the running water export of cooling water-running water heat exchanger (3) and running water recovery unit (34) are connected.
8. The water chilling unit fault diagnosis simulation device according to claim 1, wherein: the refrigerant loop is formed by connecting a compressor, a condenser (2), an expansion valve and an evaporator (1) in sequence.
9. The water chilling unit fault diagnosis simulation device according to any one of claims 1 to 8, wherein: an electric regulating valve (13) for steam is arranged on a pipeline connecting a steam inlet of the steam-hot water heat exchanger (5) and a steam supply device (31) for supplying steam to the steam-hot water heat exchanger (5), and a steam outlet of the steam-hot water heat exchanger (5) is connected with a steam recovery device (32).
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| CN201810908778.0A CN109282421B (en) | 2018-08-10 | 2018-08-10 | Fault diagnosis simulation device for water chilling unit |
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| CN201810908778.0A CN109282421B (en) | 2018-08-10 | 2018-08-10 | Fault diagnosis simulation device for water chilling unit |
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| CN110186148B (en) * | 2019-05-27 | 2021-10-15 | 宁波奥克斯电气股份有限公司 | Control method and system for preventing refrigerant leakage protection in water heating mode and air conditioner |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003279079A (en) * | 2002-03-22 | 2003-10-02 | Kobe Steel Ltd | Ice thermal accumulating system and heating method of ice thermal accumulating system |
| CN1598428A (en) * | 2004-09-09 | 2005-03-23 | 贵州汇诚科技有限公司 | Method for self-adaptive optimizing controlling cold water system of central air conditioner and its apparatus |
| JP2011141072A (en) * | 2010-01-06 | 2011-07-21 | Hitachi Plant Technologies Ltd | Cooling system and cooling method |
| CN102155811A (en) * | 2011-04-30 | 2011-08-17 | 浙江理工大学 | Double-temperature double-effect lithium bromide absorption refrigerating unit |
| CN204027841U (en) * | 2014-04-08 | 2014-12-17 | 深圳麦克维尔空调有限公司 | Cooling-water machine varying load system |
| CN104807227A (en) * | 2015-05-15 | 2015-07-29 | 上海海洋大学 | Experiment system of evaporative condenser |
| CN204555466U (en) * | 2014-12-26 | 2015-08-12 | 珠海格力电器股份有限公司 | Load adjusting system of water chilling unit, water chilling unit and central air conditioner |
| CN204854097U (en) * | 2015-07-16 | 2015-12-09 | 上海出入境检验检疫局机电产品检测技术中心 | Water -cooled cooling water set test system |
| CN106524410A (en) * | 2016-11-07 | 2017-03-22 | 深圳市奥宇节能技术股份有限公司 | Diagnosis method for actual efficiency of central air conditioner cooling water unit |
| CN206207627U (en) * | 2016-11-16 | 2017-05-31 | 杭州紫光楼宇机电工程有限公司 | Water-cooled cooling water air conditioner system |
-
2018
- 2018-08-10 CN CN201810908778.0A patent/CN109282421B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003279079A (en) * | 2002-03-22 | 2003-10-02 | Kobe Steel Ltd | Ice thermal accumulating system and heating method of ice thermal accumulating system |
| CN1598428A (en) * | 2004-09-09 | 2005-03-23 | 贵州汇诚科技有限公司 | Method for self-adaptive optimizing controlling cold water system of central air conditioner and its apparatus |
| JP2011141072A (en) * | 2010-01-06 | 2011-07-21 | Hitachi Plant Technologies Ltd | Cooling system and cooling method |
| CN102155811A (en) * | 2011-04-30 | 2011-08-17 | 浙江理工大学 | Double-temperature double-effect lithium bromide absorption refrigerating unit |
| CN204027841U (en) * | 2014-04-08 | 2014-12-17 | 深圳麦克维尔空调有限公司 | Cooling-water machine varying load system |
| CN204555466U (en) * | 2014-12-26 | 2015-08-12 | 珠海格力电器股份有限公司 | Load adjusting system of water chilling unit, water chilling unit and central air conditioner |
| CN104807227A (en) * | 2015-05-15 | 2015-07-29 | 上海海洋大学 | Experiment system of evaporative condenser |
| CN204854097U (en) * | 2015-07-16 | 2015-12-09 | 上海出入境检验检疫局机电产品检测技术中心 | Water -cooled cooling water set test system |
| CN106524410A (en) * | 2016-11-07 | 2017-03-22 | 深圳市奥宇节能技术股份有限公司 | Diagnosis method for actual efficiency of central air conditioner cooling water unit |
| CN206207627U (en) * | 2016-11-16 | 2017-05-31 | 杭州紫光楼宇机电工程有限公司 | Water-cooled cooling water air conditioner system |
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