CN107014013A - A kind of secondary cycle formula evaporative condenser natural cooling cooling-water machine and its control method - Google Patents
A kind of secondary cycle formula evaporative condenser natural cooling cooling-water machine and its control method Download PDFInfo
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- CN107014013A CN107014013A CN201710261896.2A CN201710261896A CN107014013A CN 107014013 A CN107014013 A CN 107014013A CN 201710261896 A CN201710261896 A CN 201710261896A CN 107014013 A CN107014013 A CN 107014013A
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
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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
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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
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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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
- F24F11/85—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 variable-flow pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/54—Free-cooling systems
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Atmospheric Sciences (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The application is related to refrigeration technology field, disclose secondary cycle formula evaporative condenser natural cooling cooling-water machine, including compressor, condenser, flow controller, the mechanical refrigeration system that evaporator is constituted, also include carrying out the internal circulation system of heat exchange with evaporator and the secondary circulation system of heat exchange is carried out by liquid-liquid heat exchanger and internal circulation system, the internal circulation system is provided with refrigerant in controllable internal circulation system and flows to carry out the Cooling System of heat exchange with refrigerant, the mechanical refrigeration system, internal circulation system, Cooling System and secondary circulation system are electrically connected with the controller, controller controls the operation of each system.Mechanical refrigeration system, internal circulation system, secondary circulation system and Cooling System are realized five kinds of regulation and control methods by the application, adapt to the refrigeration demand under different temperatures environment, can be when outdoor environment temperature be relatively low, free cold is obtained by Cooling System, reduce and even disable mechanical refrigeration system completely, energy-saving effect is notable.
Description
Technical field
The application is related to refrigeration technology field, more particularly to a kind of secondary cycle formula evaporative condenser natural cooling cooling-water machine and
Its control method.
Background technology
Current communication machine room, particularly large-scale data center, it is logical usually to use wind-cooled cold-water machine as low-temperature receiver
The air-conditioning equipment indoor end interrogated in computer room provides chilled water, so that the indoor environment to communication machine room carries out refrigeration cool-down.By
Annual continual running status is lain substantially in the communication apparatus in communication machine room, and caloric value is very big, therefore,
For the wind-cooled cold-water machine of communication machine room, year round cooling operation is generally required, operation energy consumption is big, and seasonal energy efficiency ratio (seer) is low.
It is additionally, since the wind-cooled cold-water machine and still needs startup compressor in cold winter and be operated, when outdoor ring
When border is too low, compressor easily occurs because condensing pressure is too low and causes the problem of feed flow is not enough, and communication machine room now
Thermic load it is smaller, will also result in the frequent start-stop of compressor, this situation not only causes energy resource consumption big, and can reduce
The service life of compressor.Therefore, the reliability of the wind-cooled cold-water machine is difficult to be resolved always.
Even if be configured with condensing pressure control system and design of condenser be Multistage Control, when wind-cooled cold-water machine is transported for a long time
Row still has larger hidden danger, and the increase and control of system cost can be caused difficult at subzero outdoor and environment temperature
The increase of degree.
Application No. CN201210205485.9 disclose a kind of closed cooling tower refrigeration system applied to IDC computer rooms and
Its refrigerating method.Including closed cooling tower, water cooling refrigeration unit, cold water tank, chilled water pump, cooling water pump, IDC computer rooms end dress
Put, embedded control system, water cooling refrigeration unit return water temperature sensor, closed cooling tower return water temperature sensor, enclosed it is cold
But tower air intake wet and dry bulb temperature sensor.The refrigerating method of the patent application is closed cooling tower dry cooling condition operation in the winter time, is kept away
Exempt from the start of water cooling refrigeration unit, energy-conservation is antifreeze；Conditioning in Transition Season closed cooling tower wet cooling condition is run, it is to avoid water cooling refrigeration unit is started shooting,
Energy-conservation；Night summer closed cooling tower wet cooling condition is run, it is to avoid water cooling refrigeration unit is started shooting, energy-conservation；Summer, water cooling was freezed in the daytime
Unit is started shooting；Using cold water tank accumulation of energy, water cooling refrigeration unit run time is postponed；Cut off the water the phase utilize cold water tank water storage function,
Ensure the normal operation for period IDC computer-room air conditioning system of cutting off the water.Such control method is suitable for having a moderate climate and not water shortage
Area.However, in northern area because night in winter minimum temperature is -20 ~ -30 DEG C, even more low temperature when there is extreme weather
When spending, using water-cooling pattern, cooling tower must take into consideration antifreezing measures, and antifreezing effect is general, unsatisfactory, be needed for this to cold
But the anti-icing fluid of high concentration is added in tower recirculated water and pipeline, it not only increases investment and also has corruption to pipeline and equipment
Erosion.
The content of the invention
In view of this, it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of energy-saving effect substantially, compression
Machine does not need the secondary cycle formula evaporative condenser natural cooling cooling-water machine of year round cooling operation.In addition, the present invention also provides a kind of
Control method based on secondary cycle formula evaporative condenser natural cooling cooling-water machine.
In order to solve the above-mentioned technical problem, the present invention is realized using following scheme：
A kind of secondary cycle formula evaporative condenser natural cooling cooling-water machine, including compressor, condenser（It is preferred that use vaporation-type
Condenser）, flow controller, evaporator constitute mechanical refrigeration system, in addition to evaporator carry out heat exchange internal circulation system
And the secondary circulation system of heat exchange is carried out by liquid-liquid heat exchanger and internal circulation system, the internal circulation system is provided with
In controllable internal circulation system refrigerant flow direction with refrigerant（Refrigerant is also known as snow kind, refrigerant, to transferring heat energy, produces freezing
Effect.Refrigerant in internal circulation system can be water）The Cooling System of heat exchange is carried out, it is the mechanical refrigeration system, interior
The circulatory system, Cooling System and secondary circulation system are electrically connected with the controller, and controller controls the operation of each system（Control
Device controls the operation of each part in the operation of each system of cooling-water machine, namely each system of control）.
Secondary circulation system provides chilled water for air-conditioning equipment indoor end.The kind of refrigeration cycle that mechanical refrigeration system is constituted is led to
Pervaporation device carries out heat exchange with internal circulation system, and internal circulation system carries out heat exchange, secondary cycle with secondary circulation system again
System endlessly provides chilled water.It can cause to increase in the waste of the energy, the application due to opening mechanical refrigeration system throughout the year
If Cooling System, refrigerant and environment are carried out heat exchange by Cooling System, in some seasons, utilize natural cooling system
System carries out heat exchange with internal circulation system, it is not necessary to run mechanical refrigeration system, to reach the effect for saving the energy.Comprehensive utilization is certainly
Right cooling system and mechanical refrigeration system, to reduce energy consumption.Due to mechanical refrigeration system and Cooling System independently, phase
Running non-interference between mutually, can both be freezed individually with Cooling System, can also isolated operation machinery
Refrigeration system is freezed, and can also be integrated both and be carried out hybrid refrigeration, strengthen overall refrigerating efficiency, be easy to two systems
Flexibly controlled, adapt to different season demands.In the application, particular for the computer room of some existing internal circulation systems, lead to
Cross increase Cooling System and secondary circulation system so that whole process of refrigerastion environmental protection and energy saving.
The effect of internal circulation system is that the cold of mechanical refrigeration system and/or Cooling System is transferred into secondary cycle
System, the internal circulation system includes interior circulation water influent pipeline and interior circulation drain pipe road, the two of the interior circulation water influent pipeline
The two ends on end and interior circulation drain pipe road are connected with evaporator and liquid-liquid heat exchanger respectively, and refrigerant interior circulation is constituted with this, described
Interior circulation water influent pipeline or interior circulation drain pipe road are provided with interior circulation kinetic pump.The refrigerant interior circulation of internal circulation system is refrigerant
Evaporator is entered from interior circulation water influent pipeline, the refrigerant come out from evaporator flows into interior circulation drain pipe road, is then followed from interior
Ring drain pipe road flows into liquid-liquid heat exchanger, and the refrigerant come out from liquid-liquid heat exchanger flows into interior circulation water influent pipeline, is constituted with this
Interior circulation.The setting of internal circulation system, when the refrigerant temperature reduction of internal circulation system, directly with secondary circulation system to enter
Row heat exchange so that the arrangement of whole system is more flexible.
The Cooling System includes natural cooling coil pipe and natural cooling water influent pipeline and natural cooling drain pipe
Road, one end of natural cooling water influent pipeline and the one end on natural cooling drain pipe road connect with the both ends of natural cooling coil pipe respectively
Connect, the other end of natural cooling water influent pipeline and the other end on natural cooling drain pipe road are connected to interior circulation water influent pipeline or interior
Liquid pipeline is recycled, and natural cooling water influent pipeline or natural cooling drain pipe road go out liquid with interior circulation water influent pipeline or interior circulation
The junction of pipeline is provided with triple valve（The words is construed to：The junction of natural cooling water influent pipeline and interior circulation water influent pipeline
Triple valve is provided with provided with triple valve, or natural cooling water influent pipeline and the junction on interior circulation drain pipe road, or natural cooling goes out
The junction of liquid pipeline and interior circulation water influent pipeline is provided with triple valve, or natural cooling drain pipe road and interior circulation drain pipe road
Junction is provided with triple valve）.Cooling System by the regulation of triple valve to change the flow direction of refrigerant in internal circulation system, when
Triple valve opens the branch road of connection Cooling System so that whole refrigerants flow into natural cooling coil pipe, natural cooling coil pipe
High efficient heat exchanging is carried out to refrigerant.The triple valve is the triple valve or switch triple valve that can be adjusted in proportion, and preferred proportion is adjusted
Save port valve.
The secondary circulation system includes secondary cycle water influent pipeline and secondary cycle drain pipe road, secondary cycle feed tube
The one end on road and the one end on secondary cycle drain pipe road are connected with liquid-liquid heat exchanger respectively, secondary cycle water influent pipeline or secondary
Liquid pipeline is recycled provided with secondary cycle kinetic pump.The refrigerant of secondary circulation system（Refrigerant, to transferring heat energy, is produced cold
Freeze effect.Refrigerant in secondary circulation system can be water）Air conditioning terminal is input to after liquid-liquid heat exchanger carries out heat exchange to set
In standby（I.e. the other end of secondary cycle water influent pipeline and the other end air conditioner end equipment on secondary cycle drain pipe road are connected, with
This constitutes circulation）.
Further, the condenser is provided with condensation fan, and the natural cooling coil pipe is provided with cooling blower.It is described
Condensation fan and cooling blower can be adjustable speed fan or constant speed blower fan, preferably adjustable speed fan.Condensation fan and cooling blower
Setting further increases radiating effect, gives mechanical refrigeration system, the refrigeration combination of Cooling System is provided more
Control mode, adapts to the demand of different temperatures.Condensation fan and cooling blower are electrically connected with the controller.
The interior circulation water influent pipeline of the internal circulation system is provided with interior circulation feed liquor temperature sensor, and its interior circulation goes out liquid
Pipeline goes out liquid temperature sensor provided with interior circulation；The secondary cycle water influent pipeline of the secondary circulation system is followed provided with secondary
Ring feed liquor temperature sensor, its secondary liquid pipeline that recycles goes out cooling-water machine described in liquid temperature sensor money also provided with secondary cycle
Including the outdoor environment temperature sensor for detecting outdoor environment temperature.Interior circulation feed liquor temperature sensor is that detection enters steaming
The temperature of the refrigerant of device is sent out, interior circulation goes out the temperature that liquid temperature sensor is the refrigerant that detection comes out from evaporator.Secondary cycle
Feed liquor temperature sensor is the temperature for the refrigerant that detection enters liquid-liquid heat exchanger, and it is detection that secondary cycle, which goes out liquid temperature sensor,
The temperature of the refrigerant come out from liquid-liquid heat exchanger.The sensor is electrically connected with the controller, interior circulation feed liquor TEMP
Device, interior circulation go out liquid temperature sensor, secondary cycle feed liquor temperature sensor, secondary cycle and go out liquid temperature sensor and directly detect
The temperature of refrigerant, the temperature detected with outdoor environment temperature sensor is contrasted, to reach the purpose accurately controlled.
Further, the pipeline of the mechanical refrigeration system is provided with condensing pressure sensor.Condensing pressure sensor with
Controller is electrically connected.If condensing pressure is too high when mechanical refrigeration system is run, the damage of refrigeration plant and the increasing of power consumption can be caused
Greatly；If condensing pressure is too low, the work of the liquefaction process and expansion valve of refrigerant can be influenceed, prevents mechanical refrigeration system from normal
Work, causes the significantly decline of refrigerating capacity.Controller can according to the operation of each system of Numerical Control of condensing pressure sensor,
Condensing pressure is maintained in normal scope.
A kind of control method of secondary cycle formula evaporative condenser natural cooling cooling-water machine, including following control logic：
1）When the temperature that outdoor environment temperature sensor is detected is higher than the temperature that interior circulation feed liquor temperature sensor is detected,
Triple valve closes the bypass of connection natural cooling coil pipe, and whole refrigerants of internal circulation system directly enter without natural cooling coil pipe
Enter evaporator heat exchange, interior circulation kinetic pump full-load run；Compressor is according to secondary cycle feed liquor temperature sensor or secondary cycle
Go out temperature progress plus Unloading Control that liquid temperature sensor is detected.Compressor is carried out plus Unloading Control is specially：Followed when secondary
When ring feed liquor temperature sensor or secondary cycle go out the temperature that liquid temperature sensor detects and be higher than setting value, control compressor adds
Carrying row, is less than setting value when secondary cycle feed liquor temperature sensor or secondary cycle go out the temperature that liquid temperature sensor detects
When, control compressor unloading operation.
2）When the temperature that outdoor environment temperature sensor is detected is less than the temperature that interior circulation feed liquor temperature sensor is detected
Degree but higher than compressor can completely temperature out of service when, triple valve is interior the bypass opening of connection natural cooling coil pipe
Whole refrigerants of the circulatory system first flow through natural cooling coil pipe, enter back into evaporator heat exchange, interior circulation kinetic pump full-load run；Pressure
Contracting machine goes out temperature progress plus unloading that liquid temperature sensor is detected according to secondary cycle feed liquor temperature sensor or secondary cycle
Control.Compressor is carried out plus Unloading Control is specially：Passed when secondary cycle feed liquor temperature sensor or secondary cycle go out liquid temperature degree
When the temperature that sensor is detected is higher than setting value, control compressor loads operation, when secondary cycle feed liquor temperature sensor or two
It is secondary when recycling the temperature that liquid temperature sensor detects and being less than setting value, control compressor unloading operation.
3）The temperature detected when outdoor environment temperature sensor less than compressor can completely temperature out of service but
When can be by the operation of minimum air quantity or temperature completely out of service higher than cooling blower, compressor and condensation fan stop fortune
OK, triple valve opens the bypass of connection natural cooling coil pipe, and whole refrigerants of internal circulation system first flow through natural cooling coil pipe,
Enter back into evaporator, interior circulation kinetic pump full-load run；Cooling blower is according to secondary cycle feed liquor temperature sensor or secondary follows
Ring goes out the temperature progress rotational speed regulation control that liquid temperature sensor is detected.Cooling blower carries out rotational speed regulation control：
When secondary cycle feed liquor temperature sensor or secondary cycle, which go out the temperature that liquid temperature sensor detects, is higher than setting value, control
Cooling blower load operating, when secondary cycle feed liquor temperature sensor or secondary cycle go out the temperature that liquid temperature sensor is detected
During less than setting value, control cooling blower unloading operation.
4）When the temperature that outdoor environment temperature sensor is detected can be by the operation or complete of minimum air quantity less than cooling blower
Full during temperature out of service, cooling blower presses minimum air quantity operation or completely out of service, compressor and condensation fan stopping
Operation, triple valve opens the bypass of connection natural cooling coil pipe, and whole refrigerants of internal circulation system first flow through natural cooling disk
Pipe, enters back into evaporator；Interior circulation kinetic pump goes out liquid TEMP according to secondary cycle feed liquor temperature sensor or secondary cycle
The temperature that device is detected carries out rotational speed regulation control.Interior circulation kinetic pump carries out rotational speed regulation control：Work as secondary cycle
When feed liquor temperature sensor or secondary cycle go out the temperature that liquid temperature sensor detects and be higher than setting value, interior circulation power is controlled
Pump load operating, when secondary cycle feed liquor temperature sensor or secondary cycle go out temperature that liquid temperature sensor detects less than setting
During definite value, the kinetic pump unloading operation of control interior circulation.
5）When the temperature that outdoor environment temperature sensor is detected can be by the operation or complete of minimum air quantity less than cooling blower
Full temperature out of service and when internal circulation system kinetic pump reaches minimum speed running status, cooling blower presses minimum air quantity fortune
Row is completely out of service, and internal circulation system kinetic pump is run by minimum speed, and triple valve is passed according to secondary cycle feed liquor temperature
Sensor or secondary cycle go out the temperature that liquid temperature sensor detects and control are adjusted.It is specific that control is adjusted in triple valve
For：When secondary cycle feed liquor temperature sensor or secondary cycle, which go out the temperature that liquid temperature sensor detects, is higher than setting value,
Control triple valve that the bypass of connection natural cooling coil pipe is opened, when secondary cycle feed liquor temperature sensor or secondary cycle go out liquid
When the temperature that temperature sensor is detected is less than setting value, control triple valve closes the bypass of connection natural cooling coil pipe.
Compared with prior art, the present invention has the advantages that：The application is by mechanical refrigeration system, interior circulation system
System, secondary circulation system and Cooling System integrate composition cooling-water machine, realize five kinds of regulation and control methods, adapt to different temperatures
Refrigeration demand under environment；It is separate between mechanical refrigeration system and Cooling System, it will not be influenced each other during work, it is real
Now control mode is flexible and changeable.Independent blower fan is respectively adopted in condenser and natural cooling coil pipe, cold using high-efficiency evaporation type
Solidifying technology, significantly improves the Energy Efficiency Ratio of unit, can be when outdoor environment temperature is lower than refrigerant interior circulation feed liquor temperature, by certainly
Right cooling coil obtains free cold, reduces and even disables mechanical refrigeration system completely, so as to reduce unit operation energy consumption, saves
Energy effect is notable.And the too low caused confession of high pressure that compressor cooling easily occurs when outdoor environment temperature can be avoided too low
The problems such as liquid deficiency and frequent start-stop, operational reliability is high, and control method is simple, and compact conformation, floor space is small, maintainability
It is good, the occasion of the year round cooling such as data center and communication machine room that are particularly suitable for use in operation.
Brief description of the drawings
Fig. 1 is example structure schematic diagram（The dotted line connection being connected with controller represents electrical connection）；
Fig. 2 is example structure schematic diagram.
Embodiment
In order to allow those skilled in the art to more fully understand technical scheme, below in conjunction with the accompanying drawings to the present invention
It is further elaborated.
Embodiment
As illustrated in fig. 1 and 2, a kind of secondary cycle formula evaporative condenser natural cooling cooling-water machine, including compressor 110, evaporation
The mechanical refrigeration system 100 that formula condenser 120, flow controller 130, evaporator 140 are constituted, in addition to carry out heat with evaporator 140
The internal circulation system 200 of exchange and the secondary cycle that heat exchange is carried out by water-water heat exchanger 700 and internal circulation system 200
System 400, the internal circulation system 200 is provided with the flow direction of the controllable reclaimed water of internal circulation system 200 to carry out heat exchange with water
Cooling System 300, the mechanical refrigeration system 100, internal circulation system 200, Cooling System 300 and secondary cycle
System 400 is electrically connected with controller 500, and controller 500 controls the operation of each system.
The internal circulation system 200 includes interior circulation water influent pipeline 210 and interior circulation drain pipe road 220, the interior circulation
The two ends of water influent pipeline 210 and the two ends on interior circulation drain pipe road 220 connect with evaporator 140 and water-water heat exchanger 700 respectively
Connect, the interior circulation of water is constituted with this, the interior circulation drain pipe road 220 is provided with interior circulation kinetic pump 250.
The Cooling System 300 includes natural cooling coil pipe 340 and natural cooling water influent pipeline 310 and naturally cold
But drain pipe road 320, one end of natural cooling water influent pipeline 310 and the one end on natural cooling drain pipe road 320 respectively with nature
The both ends connection of cooling coil 340, the other end of natural cooling water influent pipeline 310 and natural cooling drain pipe road 320 it is another
One end is connected to interior circulation water influent pipeline 210, and natural cooling drain pipe road 320 and the junction of interior circulation water influent pipeline 210
Provided with triple valve 350.
The secondary circulation system 400 includes secondary cycle water influent pipeline 410 and secondary cycle drain pipe road 420, secondary
One end of one end and secondary cycle drain pipe road 420 for circulating water influent pipeline 410 is connected with water-water heat exchanger respectively, secondary to follow
Ring drain pipe road 420 is provided with secondary cycle kinetic pump 450.
The evaporative condenser 120 is provided with condensation fan 150, and the natural cooling coil pipe 340 is provided with cooling wind
Machine 330.
The interior circulation water influent pipeline 210 of the internal circulation system is provided with interior circulation feed liquor temperature sensor 230（Interior circulation
Refrigerant temperature will be continued to monitor by entering night temperature sensor, therefore it is arranged on evaporator and natural cooling drain pipe road and interior circulation
On pipeline between the junction of water influent pipeline, or natural cooling water influent pipeline and interior circulation water influent pipeline junction and end
On pipeline between air-conditioning equipment）, its interior circulation drain pipe road 220 goes out liquid temperature sensor 240 provided with interior circulation；Described two
The secondary cycle water influent pipeline 410 of the secondary circulatory system is provided with secondary cycle feed liquor temperature sensor 430, and its is secondary to recycle liquid
Pipeline 420 goes out liquid temperature sensor 440 provided with secondary cycle, and the cooling-water machine also includes being used to detect outdoor environment temperature
Outdoor environment temperature sensor 600.The pipeline of the mechanical refrigeration system 100 is provided with condensing pressure sensor 160.
The control method of above-mentioned secondary cycle formula evaporative condenser natural cooling cooling-water machine, including following control logic：
1）When the temperature that outdoor environment temperature sensor is detected is higher than the temperature that interior circulation feed liquor temperature sensor is detected,
Triple valve closes the bypass of connection natural cooling coil pipe, and whole refrigerants of internal circulation system directly enter without natural cooling coil pipe
Enter evaporator heat exchange, interior circulation kinetic pump full-load run；Compressor is according to secondary cycle feed liquor temperature sensor or secondary cycle
Go out temperature progress plus Unloading Control that liquid temperature sensor is detected；
2）The temperature that detects less than interior circulation feed liquor temperature sensor when the temperature that outdoor environment temperature sensor is detected but
Higher than compressor can completely temperature out of service when, triple valve opens the bypass of connection natural cooling coil pipe, interior circulation
Whole refrigerants of system first flow through natural cooling coil pipe, enter back into evaporator heat exchange, interior circulation kinetic pump full-load run；Compressor
Temperature progress plus the Unloading Control that liquid temperature sensor is detected are gone out according to secondary cycle feed liquor temperature sensor or secondary cycle；
3）When the temperature that outdoor environment temperature sensor is detected temperature out of service but can be higher than completely less than compressor
When cooling blower can be by the operation of minimum air quantity or temperature completely out of service, compressor and condensation fan are out of service, and three
Port valve opens the bypass of connection natural cooling coil pipe, and whole refrigerants of internal circulation system first flow through natural cooling coil pipe, then enter
Enter evaporator, interior circulation kinetic pump full-load run；Cooling blower goes out according to secondary cycle feed liquor temperature sensor or secondary cycle
The temperature that liquid temperature sensor is detected carries out rotational speed regulation control；
4）When the temperature that outdoor environment temperature sensor is detected can be run less than cooling blower by minimum air quantity or be stopped completely
During the temperature only run, cooling blower presses minimum air quantity operation or completely out of service, and compressor and condensation fan are out of service,
Triple valve opens the bypass of connection natural cooling coil pipe, and whole refrigerants of internal circulation system first flow through natural cooling coil pipe, then
Into evaporator；Interior circulation kinetic pump goes out the detection of liquid temperature sensor according to secondary cycle feed liquor temperature sensor or secondary cycle
The temperature arrived carries out rotational speed regulation control；
5）When the temperature that outdoor environment temperature sensor is detected can be run less than cooling blower by minimum air quantity or be stopped completely
When the temperature and internal circulation system kinetic pump only run reach minimum speed running status, cooling blower press minimum air quantity operation or
Completely out of service, internal circulation system kinetic pump is run by minimum speed, and triple valve is according to secondary cycle feed liquor temperature sensor
Or secondary cycle goes out the temperature that liquid temperature sensor detects and control is adjusted.
Above-described embodiment is only the wherein specific implementation of the present invention, and it describes more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these obvious alternative forms are equal
Belong to protection scope of the present invention.
Claims (10)
1. a kind of secondary cycle formula evaporative condenser natural cooling cooling-water machine, including compressor, condenser, flow controller, evaporator structure
Into mechanical refrigeration system, it is characterised in that also including with evaporator carry out heat exchange internal circulation system and pass through liquid-liquid
Heat exchanger carries out the secondary circulation system of heat exchange with internal circulation system, and the internal circulation system is provided with controllable interior circulation system
Refrigerant flow direction is with the Cooling System with refrigerant progress heat exchange, the mechanical refrigeration system, internal circulation system, nature in system
Cooling system and secondary circulation system are electrically connected with the controller, and controller controls the operation of each system.
2. secondary cycle formula evaporative condenser natural cooling cooling-water machine according to claim 1, it is characterised in that followed in described
Loop system includes interior circulation water influent pipeline and interior circulation drain pipe road, and the two ends of the interior circulation water influent pipeline and interior circulation go out liquid
The two ends of pipeline are connected with evaporator and liquid-liquid heat exchanger respectively, and refrigerant interior circulation, the interior circulation water influent pipeline are constituted with this
Or interior circulation drain pipe road is provided with interior circulation kinetic pump.
3. secondary cycle formula evaporative condenser natural cooling cooling-water machine according to claim 2, it is characterised in that the nature
Cooling system includes natural cooling coil pipe and natural cooling water influent pipeline and natural cooling drain pipe road, natural cooling feed tube
The both ends of the one end on road and the one end on natural cooling drain pipe road respectively with natural cooling coil pipe are connected, natural cooling feed tube
The other end on road and the other end on natural cooling drain pipe road are connected to interior circulation water influent pipeline or interior circulation drain pipe road, and certainly
So cooling water influent pipeline or natural cooling drain pipe road and the junction of interior circulation water influent pipeline or interior circulation drain pipe road are provided with
Triple valve.
4. secondary cycle formula evaporative condenser natural cooling cooling-water machine according to claim 3, it is characterised in that described secondary
The circulatory system includes secondary cycle water influent pipeline and secondary cycle drain pipe road, one end of secondary cycle water influent pipeline and secondary follows
The one end on ring drain pipe road is connected with liquid-liquid heat exchanger respectively, secondary cycle water influent pipeline or secondary cycle drain pipe Lu Shangshe
There is secondary cycle kinetic pump.
5. secondary cycle formula evaporative condenser natural cooling cooling-water machine according to claim 4, it is characterised in that the condensation
Device is provided with condensation fan, and the natural cooling coil pipe is provided with cooling blower.
6. secondary cycle formula evaporative condenser natural cooling cooling-water machine according to claim 5, it is characterised in that followed in described
The interior circulation water influent pipeline of loop system is provided with interior circulation feed liquor temperature sensor, and its interior circulation drain pipe road is provided with interior circulation
Go out liquid temperature sensor；The secondary cycle water influent pipeline of the secondary circulation system is provided with secondary cycle feed liquor TEMP
Device, its secondary liquid pipeline that recycles goes out liquid temperature sensor provided with secondary cycle, and the cooling-water machine also includes being used for sensing chamber
The outdoor environment temperature sensor of external environment temperature.
7. secondary cycle formula evaporative condenser natural cooling cooling-water machine according to claim 1, it is characterised in that the machinery
The pipeline of refrigeration system is provided with condensing pressure sensor.
8. a kind of control method of secondary cycle formula evaporative condenser natural cooling cooling-water machine as claimed in claim 6, its feature
It is, including following control logic：
1）When the temperature that outdoor environment temperature sensor is detected is higher than the temperature that interior circulation feed liquor temperature sensor is detected,
Triple valve closes the bypass of connection natural cooling coil pipe, and whole refrigerants of internal circulation system directly enter without natural cooling coil pipe
Enter evaporator heat exchange, interior circulation kinetic pump full-load run；Compressor is according to secondary cycle feed liquor temperature sensor or secondary cycle
Go out temperature progress plus Unloading Control that liquid temperature sensor is detected；
2）The temperature that detects less than interior circulation feed liquor temperature sensor when the temperature that outdoor environment temperature sensor is detected but
Higher than compressor can completely temperature out of service when, triple valve opens the bypass of connection natural cooling coil pipe, interior circulation
Whole refrigerants of system first flow through natural cooling coil pipe, enter back into evaporator heat exchange, interior circulation kinetic pump full-load run；Compressor
Temperature progress plus the Unloading Control that liquid temperature sensor is detected are gone out according to secondary cycle feed liquor temperature sensor or secondary cycle；
3）When the temperature that outdoor environment temperature sensor is detected temperature out of service but can be higher than completely less than compressor
When cooling blower can be by the operation of minimum air quantity or temperature completely out of service, compressor and condensation fan are out of service, and three
Port valve opens the bypass of connection natural cooling coil pipe, and whole refrigerants of internal circulation system first flow through natural cooling coil pipe, then enter
Enter evaporator, interior circulation kinetic pump full-load run；Cooling blower goes out according to secondary cycle feed liquor temperature sensor or secondary cycle
The temperature that liquid temperature sensor is detected carries out rotational speed regulation control；
4）When the temperature that outdoor environment temperature sensor is detected can be run less than cooling blower by minimum air quantity or be stopped completely
During the temperature only run, cooling blower presses minimum air quantity operation or completely out of service, and compressor and condensation fan are out of service,
Triple valve opens the bypass of connection natural cooling coil pipe, and whole refrigerants of internal circulation system first flow through natural cooling coil pipe, then
Into evaporator；Interior circulation kinetic pump goes out the detection of liquid temperature sensor according to secondary cycle feed liquor temperature sensor or secondary cycle
The temperature arrived carries out rotational speed regulation control；
5）When the temperature that outdoor environment temperature sensor is detected can be run less than cooling blower by minimum air quantity or be stopped completely
When the temperature and internal circulation system kinetic pump only run reach minimum speed running status, cooling blower press minimum air quantity operation or
Completely out of service, internal circulation system kinetic pump is run by minimum speed, and triple valve is according to secondary cycle feed liquor temperature sensor
Or secondary cycle goes out the temperature that liquid temperature sensor detects and control is adjusted.
9. control method according to claim 8, it is characterised in that control logic 1）With 2）In, when secondary cycle feed liquor
When temperature sensor or secondary cycle go out the temperature that liquid temperature sensor detects and are higher than setting value, control compressor loads fortune
OK, when secondary cycle feed liquor temperature sensor or secondary cycle, which go out the temperature that liquid temperature sensor detects, is less than setting value,
Control compressor unloading operation.
10. control method according to claim 8, it is characterised in that
Control logic 3）In, when secondary cycle feed liquor temperature sensor or secondary cycle go out the temperature that liquid temperature sensor is detected
During higher than setting value, cooling blower load operating is controlled；When secondary cycle feed liquor temperature sensor or secondary cycle go out liquid temperature degree
When the temperature that sensor is detected is less than setting value, control cooling blower unloading operation；
Control logic 4）In, when secondary cycle feed liquor temperature sensor or secondary cycle go out the temperature that liquid temperature sensor is detected
During higher than setting value, interior circulation kinetic pump load operating is controlled；When secondary cycle feed liquor temperature sensor or secondary cycle go out liquid
When the temperature that temperature sensor is detected is less than setting value, the kinetic pump unloading operation of control interior circulation；
Control logic 5）In, when secondary cycle feed liquor temperature sensor or secondary cycle go out the temperature that liquid temperature sensor is detected
During higher than setting value, control triple valve opens the bypass of connection natural cooling coil pipe；When secondary cycle feed liquor temperature sensor
Or secondary cycle, when going out the temperature that liquid temperature sensor detects and being less than setting value, control triple valve is connection natural cooling coil pipe
Bypass close.
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| CN201710261896.2A CN107014013A (en) | 2017-04-20 | 2017-04-20 | A kind of secondary cycle formula evaporative condenser natural cooling cooling-water machine and its control method |
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| CN114111170A (en) * | 2021-11-19 | 2022-03-01 | 合肥天鹅制冷科技有限公司 | Cold accumulation type cooling liquid circulating cooling system |
| CN116817477A (en) * | 2023-08-31 | 2023-09-29 | 苏州黑盾环境股份有限公司 | Liquid cooling air conditioner refrigerating system and control method thereof |
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Application publication date: 20170804 |