CN214536606U - Modular phase change cooling cold station - Google Patents

Abstract

The application discloses a modular phase change cooling cold station, which comprises a first module, a second module and a condenser; the first module is detachably arranged on the second module; the second module comprises a host system, a control system and a power distribution system; the host system comprises a compressor, a throttle valve, a flash tank, a first circulating pump, a refrigerant output pipeline and a refrigerant input pipeline; the compressor, the condenser, the throttle valve and the flash tank are sequentially connected to form a primary refrigerant circulation loop; refrigerant output pipeline is connected with the first output of flash tank, and first circulating pump setting is on refrigerant output pipeline, and refrigerant input pipeline is connected with the first input of flash tank. The method has the advantages that the cooling tower, the host machine set, the control system, the power distribution system and the like are integrated in a modular design around a single variable-frequency centrifugal compressor unit, so that factory prefabrication is realized, the installation process is simplified, the deployment is rapid, and the installation period is shortened; and the frequency conversion centrifugal compressor is adopted, so that the refrigeration efficiency and the operation reliability of the air conditioning system are improved.

Description

Modular phase change cooling cold station

Technical Field

The application relates to the field of air conditioner refrigeration, in particular to a modular phase-change cooling cold station.

Background

The air-conditioning refrigeration system comprises a cooling system, a main machine unit and an air-conditioning tail end, wherein the cooling system is generally placed outdoors, and the main machine unit is placed in a special machine room and occupies a large area; because each device is transported as discrete parts and installed on site, the installation process is complex and the construction period is long; and the distance from the cooling system to the main machine unit is long, the running pipeline of cooling water is long, and the loss of cooling capacity and water pressure head along the way is large.

Disclosure of Invention

The modular phase-change cooling cold station is characterized in that a cooling tower, a host machine set, a control system, a power distribution system and other modular integrated designs are integrated around a single variable-frequency centrifugal compressor unit, factory prefabrication is achieved, the installation process is simplified, rapid deployment is achieved, and the installation period is shortened; and the frequency conversion centrifugal compressor is adopted, so that the refrigeration efficiency and the operation reliability of the air conditioning system are improved.

The technical scheme for solving the technical problem is as follows:

a modular phase change cooling cold station comprising a first module, a second module, and a condenser; the first module is detachably arranged on the second module; the first module comprises a fan; the second module comprises a host system, a control system and a power distribution system; the host system comprises a compressor, a throttle valve, a flash tank, a first circulating pump, a refrigerant output pipeline and a refrigerant input pipeline; the compressor, the condenser, the throttle valve and the flash tank are sequentially connected to form a primary refrigerant circulation loop; the refrigerant output pipeline is connected with the first output end of the flash tank, the first circulating pump is arranged on the refrigerant output pipeline, and the refrigerant input pipeline is connected with the first input end of the flash tank.

Furthermore, the connecting end of the refrigerant output pipeline and the flash tank is positioned below the liquid level of the refrigeration working medium of the flash tank; the connecting end of the refrigerant input pipeline and the flash tank is positioned above the liquid level of the refrigeration working medium of the flash tank; the connecting end of the compressor and the flash tank is positioned above the liquid level of the refrigeration working medium of the flash tank; the connecting end of the throttling valve and the flash tank is positioned below the liquid level of the refrigeration working medium of the flash tank; the compressor is an oil-free centrifugal compressor.

Further, the first module is a cooling tower which comprises a fan, a spraying device, a filler and a water storage tank which are arranged from top to bottom.

Further, the cooling tower is a counter-flow wet cooling tower or a cross-flow wet cooling tower.

Furthermore, the condenser is a water-cooled condenser, is arranged in the second module and comprises two channels of an isolated refrigerant side and an isolated water side.

Further, the water-cooled condenser is a shell-and-tube heat exchanger or a plate heat exchanger or a flooded heat exchanger.

Further, the second module still includes second circulating pump and water treatment system, the second circulating pump input is connected with the cistern, and the output is connected with the water side input of condenser, and the water side output of condenser is connected with spray set, water treatment system and condenser water side parallel connection.

Furthermore, the cooling tower is an evaporative cooling tower, and the condenser is arranged in the cooling tower and is arranged between the spraying device and the filler.

Furthermore, the second module still includes second circulating pump and water treatment system, the second circulating pump input is connected with the cistern, and the output is connected with spray set, the water treatment system input is connected with second circulating pump output, and the output is connected with the cistern.

Furthermore, the second module also comprises a water softening device for softening the cooling water.

Further, the first module is an air-cooled cooling tower, and the condenser is an air-cooled condenser and is arranged in the cooling tower.

Further, the condenser is a micro-channel heat exchanger or a coil heat exchanger.

Further, fins are arranged on the outer surface of the condenser.

Furthermore, the condenser comprises an input end and an output end, the input end of the condenser is connected with the output end of the compressor, and the output end of the condenser is connected with the input end of the throttle valve.

Further, the second module further comprises a cooling water filter, and the cooling water filter is arranged between the water storage tank and the second circulating pump.

Furthermore, the first module is provided with a spray pipe water inlet pipeline and a connector thereof, a cooling water outlet pipeline and a connector thereof, and the second module is provided with a spray pipe water outlet pipeline and a connector thereof, and a cooling water inlet pipeline and a connector thereof.

Furthermore, the first module is provided with a condenser input pipeline and a connecting port thereof, and an output pipeline and a connecting port thereof; the second module is provided with a compressor output pipeline and a connecting port thereof, and a throttle valve input pipeline and a connecting port thereof.

Furthermore, the refrigerant output pipeline and the refrigerant input pipeline are respectively provided with a connecting port.

Further, the control system controls the start, stop and parameters of the compressor, the throttle valve, the first circulating pump, the second circulating pump and the fan.

Further, the power distribution system comprises a distribution box, a battery pack and an Uninterruptible Power Supply (UPS), and the power distribution and on-off control is carried out on the compressor, the throttle valve, the first circulating pump, the second circulating pump and the fan.

Further, the compressor is a variable frequency magnetic suspension centrifugal compressor.

Further, the throttle valve is an electronic expansion valve.

Further, the water treatment system comprises a dosing system and a sewage system, wherein the input end of the dosing system is connected with the output end of the second circulating pump, the dosing system comprises a dosing barrel, a PH instrument and a conductivity meter, and the sewage system comprises a filter, an electric valve and a flowmeter which are connected in series.

Furthermore, the dosing system is provided with a temperature sensor for detecting the temperature of the cooling water and correcting the conductivity value measured by the conductivity meter.

Furthermore, the dosing system comprises a manual valve for controlling the on-off of cooling water and a regulating valve for regulating the flow of the water.

Further, the sewage system comprises a manual valve for controlling the on-off of the cooling water.

Further, the flowmeter is an electromagnetic flowmeter.

Furthermore, the number of the medicine adding barrels is a plurality of, and medicine adding pumps are arranged.

The application has the following beneficial effects:

(1) the system has the advantages that modular integrated design of a cooling tower, a host machine set, an air conditioner tail end, a control system, a power supply system and the like is realized around a single variable-frequency centrifugal compressor unit, so that factory prefabrication is realized, the installation process is simplified, the deployment is rapid, and the installation period is shortened; and the frequency conversion centrifugal compressor is adopted, so that the refrigeration efficiency and the operation reliability of the air conditioning system are improved.

(2) The electric valve is accurately controlled according to the conductivity for automatic pollution discharge, the amount of the discharged sewage is accurately measured, and the dosage is accurately calculated according to the accumulated amount of the discharged sewage, so that the dosage is added according to the requirement and the dosage is added in time.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.

Fig. 1 is a schematic structural diagram of a first embodiment of the modular phase change cooling cold station of the present application.

Fig. 2 is a schematic structural diagram of a second embodiment of the modular phase change cooling cold station of the present application.

Fig. 3 is a schematic structural diagram of a third embodiment of the modular phase change cooling cold station of the present application.

FIG. 4 is a schematic diagram of a water treatment system of the modular phase change cooling cold station of the present application.

In the figure: (101) a compressor; (102) a flash tank; (103) a throttle valve; (104) a first circulation pump; (105) a condenser; (201) a cooling water filter; (202) a second circulation pump; (203) a water treatment system; (301) a second fan; (302) an air filter (303) evaporator; (401) a first fan; (402) a spraying device; (403) a filler; (404) a reservoir; (501) a distribution box; (502) a control system; (503) a battery pack; (504) an Uninterruptible Power Supply (UPS); (2031) a flow meter; (2032) an electrically operated valve; (2033) a filter; (2034) a medicine adding barrel; (2035) a pH meter; (2036) a conductivity meter; (2037) a temperature sensor; (2038) a manual valve; (2039) and adjusting the valve.

Detailed Description

In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, refer to orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally found in use of products of the application, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of description and simplicity of description, but do not refer to or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present application. The term "connected" as used herein also includes not only a direct connection between two devices or components, but also an indirect connection via other components or devices, and therefore should not be construed as limiting the present application.

The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1-3, a modular phase change cooling cold station of the present application includes a first module, a second module, and a condenser 105; the first module can be detachably arranged on the second module, so that the first module is convenient to transport, and the first module and the second module can be separately transported during transportation and then arranged on site. The second module includes a host system, a control system 502, and a power distribution system; the main machine system comprises a compressor 101, a throttle valve 103, a flash tank 102, a first circulating pump 104, a refrigerant output pipeline 106 and a refrigerant input pipeline 107; the compressor 101, the condenser 105, the throttle valve 103 and the flash tank 102 are sequentially connected to form a primary refrigerant circulation loop; the refrigerant output pipeline 106 and the first output end O of the flash tank 102₁A first circulation pump 104 is disposed on the refrigerant output line 106 for delivering the low-temperature refrigerant to the evaporator, a refrigerant input line 107 and a first input terminal i of the flash tank 102₁Connecting; the connecting end of the refrigerant output pipeline 106 and the flash tank 102 is positioned below the liquid level of the refrigerant of the flash tank 102; the connection end of the refrigerant input pipeline 107 and the flash tank 102 is positioned at the refrigerating station of the flash tank 102Above the medium liquid level; the connecting end of the compressor 101 and the flash tank 102 is positioned above the liquid level of the refrigerant of the flash tank 102; the connecting end of the throttling valve 103 and the flash tank 102 is positioned below the liquid level of the refrigeration working medium of the flash tank 102; the compressor 101 is an oil-free centrifugal compressor 101, and the oil return problem of the compressor 101 is not considered. When the refrigeration cycle is performed, the high-temperature gaseous working medium discharged from the compressor 101 enters the condenser 105 for cooling, then enters the flash tank 102 after throttling, pressure reducing and temperature reducing through the throttle valve 103, and the gaseous working medium in the flash tank 102 is sucked and compressed by the compressor 101 and then is discharged into the condenser 105 for the next refrigeration cycle. The low-temperature liquid working medium in the flash tank 102 is conveyed to the evaporator by the first circulating pump 104 for heat exchange, and then the temperature is increased to become a gaseous working medium, and the gaseous working medium returns to the flash tank 102 to be cooled by the low-temperature working medium in the flash tank 102.

Fig. 1 is a schematic structural diagram of a first embodiment of the present application, in which a first module is a water-cooling tower, and a high-temperature working medium in the condenser 105 is cooled by cooling water, and the cooling tower includes a fan 401, a spraying device 402, a packing 403 and a water reservoir 404 arranged from top to bottom. The cooling tower can be a counter-flow wet cooling tower, a cross-flow wet cooling tower, a closed cooling tower or an open cooling tower. When a water-cooled cooling tower is used, the condenser 105 is a water-cooled condenser 105, and is installed in the second module, preferably, the water-cooled condenser 105 is a shell-and-tube heat exchanger, a plate heat exchanger or a flooded heat exchanger, and includes two channels separated by a refrigerant side and a water side. The second module further comprises a second circulation pump 202 and a cooling water filter 201, wherein the input end of the second circulation pump 202 is connected with the water storage tank 404, the output end of the second circulation pump 202 is connected with the water side input end of the condenser 105, the water side output end of the condenser 105 is connected with the spraying device 402, and the filter is arranged between the water storage tank 404 and the second circulation pump 202. The low-temperature cooling water in the reservoir 404 enters the water side channel of the condenser 105 after being filtered by the cooling water filter 201 under the pumping action of the second circulating pump 202, the high-temperature working medium on the refrigerant side is cooled and then the temperature is increased, the high-temperature working medium is conveyed to the spraying device 402 and sprayed into the filler 403, and the cooling water in the filler 403 flows into the reservoir 404 for next circulation after being cooled by cold air pumped by the fan 401. The second module further comprises a water treatment system 203, wherein the water treatment system 203 is connected with the water side of the condenser 105 in parallel, and is used for sterilizing, killing algae, removing scale and the like of the cooling water.

As shown in fig. 2, which is a schematic structural diagram of a second embodiment of the present application, unlike the first embodiment, in the second embodiment, the first module is an evaporative cooling tower, the condenser 105 is arranged in the cooling tower and is installed between the spraying device 402 and the packing 403, preferably, the condenser 105 is a coil condenser 105 or a V-shaped condenser 105, and comprises an input end and an output end, the input end is connected with the output end of the compressor 101, and the output end is connected with the input end of the throttle valve 103. The input end of the second circulating pump 202 is connected with the water storage tank 404, the output end of the second circulating pump is connected with the spraying device 402, the input end of the water treatment system 203 is connected with the output end of the second circulating pump 202, and the output end of the water treatment system is connected with the water storage tank 404. The low-temperature cooling water in the reservoir 404 is filtered by the cooling water filter 201 under the suction action of the second circulating pump 202, and then enters the spraying device 402, is sprayed on the surface of the condenser 105 to form a water film, and is rapidly evaporated on the surface of the condenser 105 under the strong air inducing action of the first fan 401 to cool the high-temperature working medium in the condenser 105, the temperature of the cooling water after heat exchange is increased, and the cooling water falls into the filler 403, and the cooling water in the filler 403 flows into the reservoir 404 for the next circulation after being cooled by the cold air extracted by the fan 401. The second module also comprises a water softening device for softening the cooling water so as to prevent the cooling water from evaporating in a large quantity to cause the concentration of calcium and magnesium ions in the water to increase and scale on the surface of the condenser to influence the heat exchange effect.

Fig. 3 is a schematic structural diagram of a third embodiment of the present application, in which the first module is an air-cooled cooling tower, the condenser 105 is an air-cooled condenser 105, and the air-cooled condenser 105 is disposed in the cooling tower to directly cool the high-temperature working medium in the condenser 105. Preferably, the air-cooled condenser 105 is a micro-channel heat exchanger or a coil heat exchanger, and fins are arranged on the outer surface of the condenser 105 to enhance the heat exchange effect.

When the first module is a water-cooling tower, the condenser 105 is arranged on the second module, the first module and the second module need to be provided with a cooling water pipeline and a connecting port thereof, the first module is provided with a spray pipe water inlet pipeline and a connecting port thereof, a cooling water outlet pipeline and a connecting port thereof, and the second module is provided with a spray pipe water outlet pipeline and a connecting port thereof, a cooling water inlet pipeline and a connecting port thereof; when the first module is an evaporative cooling tower, the condenser 105 is arranged on the first module, the first module and the second module are also required to be provided with a refrigerant pipeline and a connecting port thereof, the first module is also provided with an input pipeline and a connecting port thereof of the condenser 105, an output pipeline and a connecting port thereof of the condenser 105, and the second module is provided with an output pipeline and a connecting port thereof of the compressor 101, and an input pipeline and a connecting port thereof of the throttle valve 103; when the first module is an air-cooled cooling tower, the condenser 105 is disposed on the first module, and the first module and the second module need not to be provided with cooling water pipelines and connectors thereof. Preferably, cooling water pipeline and refrigerant pipeline set up inside first module and second module, and first module and second module when the installation, preferred adoption flange joint or quick-operation joint connect, reduce the installation degree of difficulty, simplify the installation.

As shown in fig. 1 to 3, the second module integrates a control system 502 and a power distribution system, and the control system 502 controls start-stop and parameters of the compressor 101, the throttle valve 103, the first circulation pump 104, the second circulation pump 202, and the fan 401. The power distribution system includes a distribution box, a battery pack 503, and an Uninterruptible Power Supply (UPS) 504, and performs power distribution and on-off control of the compressor 101, the throttle valve 103, the first circulation pump 104, the second circulation pump 202, and the fan 401. Preferably, the compressor 101 is a magnetic suspension variable frequency centrifugal compressor 101, so as to improve the refrigeration efficiency and the operational reliability of the air conditioning system, and the throttle valve 103 is an electronic expansion valve.

When the condenser 105 is cooled by cooling water, the problems of scaling on the surface of equipment, breeding of microorganisms, corrosion of the equipment and the like are easy to occur, and a dosing device is required to be installed for sterilization, algae removal and corrosion prevention of the cooling water. Fig. 4 is a schematic diagram showing the structure of the water treatment system of the modular phase change cooling cold station of the present application. The water treatment system 203 comprises a dosing system and a sewage system, the input end of the dosing system and the sewage system are connected with the output end of the second circulating pump 202, when the first module is a water-cooling tower, the output end of the water treatment system 203 is connected with the output end of the water side of the condenser 105, namely the water treatment system 203 is connected with the water side of the condenser 105 in parallel; when the first module is an evaporative cooling tower, the output of the water treatment system 203 is connected to a reservoir 404. The dosing system comprises a dosing barrel 2034, a PH meter 2035 and a conductivity meter 2036, the sewage disposal system comprises a filter 2033, an electric valve 2032 and a flow meter 2031 which are connected in series, and preferably, the flow meter 2031 is an electromagnetic flow meter 2031. The medicine adding barrel 2034 is an automatic medicine adding barrel 2034 with a medicine adding pump, and the number is several. The conductivity meter 2035 detects the conductivity of the cooling water system in real time, the PH meter 2036 detects the PH value of the cooling water system in real time, the conductivity value exceeds a set value, the electric valve 2032 is opened for automatic sewage discharge, the flow meter 2031 monitors the sewage discharge amount, the accumulated flow reaches the set value, and the dosing pump automatically starts to dose the medicament. In order to improve the accuracy of the conductivity value, the dosing system is further provided with a temperature sensor 2037 for detecting the temperature of the cooling water, and the conductivity value is corrected according to the temperature value. The dosing system is also provided with a regulating valve 2039 for regulating water flow. In order to facilitate the maintenance, replacement and the like of the equipment, the dosing system and the sewage system are provided with a manual valve 2038 for controlling the on-off of the cooling water. The sewage discharge amount is accurately measured, the dosage can be accurately calculated according to the accumulated amount of the sewage discharge amount, so that the waste caused by too much dosage can be avoided, and the influence on the water quality caused by untimely dosage or insufficient dosage can be avoided.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (15)

1. A modular phase change cooling cold station, comprising a first module, a second module, and a condenser; the first module is detachably arranged on the second module; the first module comprises a fan; the second module comprises a host system, a control system and a power distribution system; the host system comprises a compressor, a throttle valve, a flash tank, a first circulating pump, a refrigerant output pipeline and a refrigerant input pipeline; the compressor, the condenser, the throttle valve and the flash tank are sequentially connected to form a primary refrigerant circulation loop; the refrigerant output pipeline is connected with the first output end of the flash tank, the first circulating pump is arranged on the refrigerant output pipeline, and the refrigerant input pipeline is connected with the first input end of the flash tank.

2. The modular phase change cooling station as claimed in claim 1, wherein the connection end of the refrigerant output pipeline and the flash tank is located below the refrigerant liquid level of the flash tank; the connecting end of the refrigerant input pipeline and the flash tank is positioned above the liquid level of the refrigeration working medium of the flash tank; the connecting end of the compressor and the flash tank is positioned above the liquid level of the refrigeration working medium of the flash tank; the connecting end of the throttling valve and the flash tank is positioned below the liquid level of the refrigeration working medium of the flash tank; the compressor is an oil-free centrifugal compressor.

3. The modular phase change cooled cold station of claim 1, wherein the first module is a cooling tower comprising a fan, a spray, a fill and a reservoir arranged from top to bottom.

4. The modular phase change cooled cold station of claim 3, wherein the condenser is a water cooled condenser, mounted in the second module, comprising two channels separated by a coolant side and a water side.

5. The modular phase change chilled cold station of claim 4, wherein the second module further comprises a second circulation pump connected to the reservoir at an input and to the water side input of the condenser at an output, the water side output of the condenser connected to the spray device, and a water treatment system connected in parallel to the water side of the condenser.

6. The modular phase change cooled cold station as claimed in claim 3, wherein the cooling tower is an evaporative cooling tower and the condenser is located within the cooling tower between the spray means and the fill material.

7. The modular phase change chilled cold station of claim 6, wherein the second module further comprises a second circulation pump having an input connected to the reservoir and an output connected to the spray system, and a water treatment system having an input connected to the second circulation pump output and an output connected to the reservoir.

8. The modular phase change chilled station of claim 1, wherein the first module is an air-cooled cooling tower and the condenser is an air-cooled condenser disposed within the cooling tower.

9. The modular phase change chilled cold station of claim 4 or 6, wherein the condenser includes an input and an output, the input of the condenser being connected to the output of the compressor, and the output of the condenser being connected to the input of the throttle valve.

10. The modular phase change chilled cold station of claim 5 or 7, wherein the second module further comprises a cooling water filter disposed between the water reservoir and the second circulation pump.

11. The modular phase change cooling cold station as claimed in any one of claims 3 to 7, wherein the first module is provided with a shower inlet line and its connection port and a cooling water outlet line and its connection port, and the second module is provided with a shower outlet line and its connection port and a cooling water inlet line and its connection port.

12. The modular phase change cooled cold station according to claim 6, 7 or 8, wherein the first module is provided with a condenser input line and its connection port and an output line and its connection port; the second module is provided with a compressor output pipeline and a connecting port thereof, and a throttle valve input pipeline and a connecting port thereof.

13. The modular phase change cooling cold station as claimed in claim 1, wherein the control system controls start and stop and parameters of the compressor, throttle valve, first circulation pump, second circulation pump and fan.

14. The modular phase change cooled cold station as claimed in claim 1, wherein the power distribution system comprises a distribution box, a battery pack and an Uninterruptible Power Supply (UPS) to distribute and power on and off control the compressor, throttle valve, first circulation pump, second circulation pump and fan.

15. The modular phase change cooling cold station as claimed in claim 5 or 7, wherein the water treatment system comprises a dosing system with an input connected to the output of the second circulation pump and a blowdown system comprising a dosing tank, a PH meter and a conductivity meter, the blowdown system comprising a filter, an electric valve and a flow meter in series.

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