CN211116425U - Centralized cooling system - Google Patents
Centralized cooling system Download PDFInfo
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- CN211116425U CN211116425U CN201922232798.3U CN201922232798U CN211116425U CN 211116425 U CN211116425 U CN 211116425U CN 201922232798 U CN201922232798 U CN 201922232798U CN 211116425 U CN211116425 U CN 211116425U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The embodiment of the present application provides a centralized cooling system, which includes: the system comprises at least one external heat exchanger, a flow regulating assembly for controlling the flow of cooling liquid and a purification treatment assembly for purifying water; liquid outlets of the external heat exchangers are communicated with a liquid inlet of the flow regulating assembly through a first branch pipeline; the liquid outlet of the flow regulating assembly is divided into two paths, one path is communicated with the liquid inlet of the purification treatment assembly through a first return pipeline, and the other path is communicated with the liquid inlets of the heat generating unit heat exchangers through a first collecting pipeline; the liquid outlet of the purification treatment assembly is communicated with the liquid inlet of each external heat exchanger; the liquid outlets of the heat generating unit heat exchangers are communicated with the liquid inlet and liquid path of each external heat exchanger through a second return pipeline. The technical problem of the energy waste that each heat production unit heat exchanger of current wind generating set system level test center cools off respectively and brings is solved in this application embodiment.
Description
Technical Field
The embodiment of the application relates to the technical field of cooling, in particular to a centralized cooling system.
Background
In the prior art, the working driving mode of each subsystem of a wind generating set system level test center is mostly operated through a motor and a hydraulic actuator, and each subsystem is accompanied with a large amount of heat generation in the working process.
Generally, each subsystem corresponds to each self-cooling system, and basically presents a distributed layout configuration mode. A plurality of cooling systems are respectively cooled, so that energy waste is easily caused. And moreover, the cooling liquid purification and the anti-freezing treatment are respectively carried out in the cooling circulation loops of the subsystems, and the heat exchange quantity, the cooling requirement and the operating characteristics of the subsystems are not considered.
Therefore, a new cooling system needs to be redesigned, and the concentrated heat dissipation cooling, purification and anti-freezing treatment can be performed on each heat generating unit of the wind generating set system level test center with energy saving and high efficiency.
SUMMERY OF THE UTILITY MODEL
The purpose of the embodiment of the application aims at providing a centralized cooling system for solve the technical problem that energy is wasted because each heat generating unit of the existing wind generating set system level test center is cooled respectively.
In order to achieve the above object, an embodiment of the present application provides a concentrated cooling system, including: the system comprises at least one external heat exchanger, a flow regulating assembly for controlling the flow of cooling liquid and a purification treatment assembly for purifying water;
liquid outlets of the external heat exchangers are communicated with a liquid inlet of the flow regulating assembly through a first branch pipeline;
the liquid outlet of the flow regulating assembly is divided into two paths, one path is communicated with the liquid inlet of the purification treatment assembly through a first return pipeline, and the other path is communicated with the liquid inlets of the heat generating unit heat exchangers through a first collecting pipeline;
the liquid outlet of the purification treatment assembly is communicated with the liquid inlet of each external heat exchanger;
the liquid outlets of the heat generating unit heat exchangers are communicated with the liquid inlet and liquid path of each external heat exchanger through a second return pipeline.
Optionally, the flow regulating assembly comprises at least one set of water pump assemblies;
the liquid inlet of each group of water pump components is connected in parallel to be used as a liquid inlet of a flow regulating component;
the liquid outlet of each group of water pump assemblies is connected in parallel to be used as the liquid outlet of the flow regulating assembly;
each group of water pump components comprises a water pump, a liquid inlet valve arranged at the liquid inlet of the water pump and a liquid outlet valve arranged at the liquid outlet of the water pump.
Optionally, at least one of the following is provided on the first collecting line:
pressure sensor, first voltage regulator, first temperature sensor.
Optionally, the purification treatment assembly comprises a first filter for purifying the water quality and a second pressure stabilizer for maintaining the coolant at a constant pressure.
Optionally, at least one of the following is provided on the second return line:
a second temperature sensor, a flow measuring device, a water return valve and a second filter.
Optionally, the centralized cooling system further comprises at least one branch end heat exchanger;
the first liquid inlet of each branch tail end heat exchanger is communicated with a first collecting pipeline;
the first liquid outlet and the second liquid inlet of each branch tail end heat exchanger are correspondingly communicated with the liquid inlet and the liquid outlet of one heat generating unit heat exchanger;
and a second liquid outlet of each branch end heat exchanger is communicated with a second return pipeline.
Optionally, the heat generating unit heat exchanger comprises at least one of:
the device comprises a dragging motor, a hydraulic loading system, a tested motor, a frequency converter, a tested alternating current system, a fatigue test bed, an environment simulator, a power grid simulator and a stress testing cabin.
Optionally, the cooling liquid is a non-antifreeze liquid.
Optionally, the outer wall of each external heat exchanger is provided with a third temperature sensor;
the monitoring temperature end of the third temperature sensor is suspended in the air and used for monitoring the temperature of the external environment;
and the bottom of each external heat exchanger is provided with a fourth temperature sensor for monitoring the temperature in the external heat exchanger.
Optionally, the first branch pipe is provided with at least one layer of heat insulation cotton or electric tracing band.
Optionally, the centralized cooling system further comprises: at least one heater;
the heater is arranged at least one of the following positions:
the bottom of each external heat exchanger, a first branch pipeline, a first collecting pipeline and a second return pipeline.
Compared with the prior art, the technical scheme of the embodiment of the application has at least the following beneficial technical effects:
the cooling system is concentrated to this application embodiment includes at least one outside heat exchanger, a flow control subassembly for controlling the coolant liquid flow, at least one temperature measuring device and the purification treatment subassembly that is used for purifying the coolant liquid, each outside heat exchanger passes through the flow control subassembly with the coolant liquid that circulates out from each outside heat exchanger, partly purify the back through the purification treatment subassembly and get into each outside heat exchanger, partly get into each heat production unit heat exchanger, cool off the heat dissipation to each heat production unit, constantly purify the coolant liquid and carry out concentrated heat dissipation cooling to each heat production unit simultaneously.
The concentrated cooling system of the embodiment of the application can carry out concentrated heat dissipation cooling on each heat generating unit of a wind generating set system level test center, is the organic integration of the cooling device of each heat generating unit of the wind generating set system level test center, can support the operation demand that combines each heat generating unit to carry out the mode of heat dissipation configuration optimization such as flow, purification, prevent frostbite, can avoid the cooling device heat-sinking capability that some heat generating units correspond not enough and the cooling device heat-sinking capability that another part heat generating unit corresponds but have the abundant condition, thereby concentrated cooling system can enough improve cooling device's utilization efficiency, and is favorable to energy-conservation again.
Additional aspects and advantages will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a centralized cooling system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a centralized cooling system according to another embodiment of the present application.
Reference numerals: 1-an external heat exchanger, 2-a flow regulating component, 3-a purification treatment component and 4-a heat generating unit heat exchanger;
101-a first branch pipeline, 102-a first return pipeline, 103-a first collecting pipeline, 104-a second return pipeline;
21-a water pump, 22-a liquid inlet valve and 23-a liquid outlet valve;
5-a pressure sensor, 6-a first pressure stabilizing device and 7-a first temperature sensor;
31-a first filter, 32-a second pressure stabilizer;
8-a second temperature sensor, 9-a flow measuring device, 10-a water return valve, 11-a second filter and 12-a branch end heat exchanger.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
The system level test center of the wind generating set generally comprises a plurality of subsystems such as a transmission test subsystem, a variable flow test subsystem and a variable pitch yaw test subsystem, and aiming and customized cooling modes of a dragging motor of the transmission test subsystem, a dragging motor of the variable flow test subsystem and a hydraulic loading system of the variable pitch yaw test subsystem need to be carried out through a centralized cooling system to ensure the system level test performance of the wind generating set.
In an embodiment of the present application, the heat generating unit refers to a driving unit that generates heat for completing a test project in a wind turbine generator system level test center.
An embodiment of the present application provides a centralized cooling system, which is shown in fig. 1 and includes: at least one external heat exchanger 1, a flow regulating assembly 2 for controlling the flow of the cooling liquid and a purification treatment assembly 3 for purifying the cooling liquid.
The liquid outlet of each external heat exchanger 1 is communicated with the liquid inlet of the flow regulating assembly 2 through a first branch pipeline 101.
The liquid outlet of the flow regulating assembly 2 is divided into two paths, one path is communicated with the liquid inlet of the purification treatment assembly 3 through a first return pipeline 102, and the other path is communicated with the liquid inlets of the heat generating unit heat exchangers 4 through a first collecting pipeline 103.
The liquid outlet of the purification treatment component 3 is communicated with the liquid inlet of each external heat exchanger 1.
The liquid outlet of each heat generating unit heat exchanger 4 is communicated with the liquid inlet of each external heat exchanger 1 through a second return pipeline 104.
Each outside heat exchanger 1 of this application embodiment passes through flow control assembly 2 with the coolant liquid that circulates out from each outside heat exchanger 1, and partly purify back through purification treatment component 3 and get into each outside heat exchanger 1, and partly get into each heat production unit heat exchanger 4, constantly purifies the coolant liquid while to each heat production unit heat exchanger 4 heat dissipation centralized cooling. The concentrated cooling system of the embodiment of the application is a concentrated cooling system which is relatively energy-saving and efficient and serves each heat generating unit heat exchanger 4 of the wind generating set system level test center, the cooling devices of each heat generating unit heat exchanger 4 of the wind generating set system level test center are integrated, the running requirements of each heat generating unit heat exchanger 4 can be combined, configuration optimization is carried out, and therefore the utilization rate of the cooling devices is improved.
Alternatively, the external heat exchanger 1 may be a cooling tower or an air-water heat exchanger. The external heat exchanger 1 is used for exchanging heat generated by each heat generating unit heat exchanger 4 with the external environment through the cooling liquid.
Alternatively, referring to fig. 2, the flow regulating assembly 2 comprises at least one set of water pump assemblies; the liquid inlet of each group of water pump components is connected in parallel to be used as a liquid inlet of the flow regulating component 2; the liquid outlet of each group of water pump assemblies is connected in parallel to be used as the liquid outlet of the flow regulating assembly 2; each group of water pump components comprises a water pump 21, a liquid inlet valve 22 arranged at the liquid inlet of the water pump 21 and a liquid outlet valve 23 arranged at the liquid outlet of the water pump 21. As an example, in the embodiment shown in fig. 2, three sets of water pump assemblies and three external heat exchangers 1 are provided, liquid outlets of the three external heat exchangers 1 flow out through a first branch pipeline 101 and are collected into one pipeline and then divided into three branches, the three branches respectively enter the three sets of water pump assemblies and are collected into one pipeline, and the pipeline is divided into two branches and is respectively communicated with a first return pipeline 102 and a first collection pipeline 103.
Optionally, the water pump 21 is a centrifugal water pump, and overcomes the resistance of the centralized cooling system to obtain a certain circulating flow rate, and corresponding flow rate matching is performed according to the load of the heat exchanger 4 of the heat generating unit. In order to reduce the operation load and cost of a single large-lift and large-resistance water pump 21, a plurality of relatively small-lift water pumps 21 can be connected in parallel. In order to achieve low energy consumption of the whole set of centralized cooling system, the water pumps 21 are started and connected in parallel to perform frequency conversion control matching with the load of the heat exchangers 4 of the heat generating units.
Optionally, referring to fig. 2, at least one of the following is provided on the first collecting line 103: a pressure sensor 5, a first pressure stabilizer 6, a first temperature sensor 7. As an example, in the embodiment shown in fig. 2, the pressure sensor 5, the first pressure stabilizer 6 and the first temperature sensor 7 are arranged in sequence on a pipeline communicating with the liquid outlet of the flow regulating assembly 2, and the first temperature sensor 7 is located on the first collecting pipeline 103.
Alternatively, specifically, the first pressure stabilizer 6 is a centralized cooling system for obtaining a pressure-stabilized pressure, and is not changed by the internal load and temperature of the centralized cooling system, and the first pressure stabilizer 6 may be in the form of a head tank or a nitrogen pressure stabilizer.
Alternatively, referring to fig. 2, the purification treatment unit 3 includes a first filter 31 for purifying the water and a second pressure stabilizer 32 for maintaining a constant pressure of the cooling liquid. The second voltage stabilization device 32 and the first voltage stabilization device 6 may be identical or different.
Optionally, the centralized cooling system further comprises at least one branch end heat exchanger 12; the first liquid inlet of each branch end heat exchanger 12 is communicated with a first collecting pipeline 103; the first liquid outlet and the second liquid inlet of each branch tail end heat exchanger 12 are correspondingly communicated with the liquid inlet and the liquid outlet of one heat generating unit heat exchanger 4; the second outlet port of each branch end heat exchanger 12 communicates with a second return line 104. The number of the external heat exchangers 1 to be opened depends on the operating load of the branch end heat exchanger 12 and the number of the openings.
As an example, in the embodiment shown in fig. 2, a flow measuring device 9 is provided near the first inlet of each end-of-branch heat exchanger 12, and a second temperature sensor 8 is provided near the second outlet of each end-of-branch heat exchanger 12. The cooling liquid of the second liquid outlet of each branch end heat exchanger 12 is collected again on a pipeline, and the water return valve 10 and the second filter 11 are sequentially arranged on the pipeline. The cooling liquid passes through the second return line 104 and then enters the branch lines, and then the branch lines are divided into a plurality of branch lines, and the branch lines respectively return to the external heat exchangers 1.
Optionally, at least one of the following is provided on the second return line 104: a second temperature sensor 8, a flow rate measuring device 9, a return valve 10, and a second filter 11.
Alternatively, the first filter 31 and the second filter 11 may adopt mechanical filtration or resin filtration, etc. to ensure the purity of the circulating cooling liquid, and further ensure the heat exchange efficiency of the whole centralized cooling system and the long-term reliability of the equipment.
Optionally, the first temperature sensor 7, the second temperature sensor 8 and the flow measurement device 9 configured in the centralized cooling system may perform heat test and calculation on each heat generating unit heat exchanger 4, and add the heat exchange amounts of each heat generating unit heat exchanger 4 so as to obtain the heat exchange load corresponding to the heat generating unit heat exchanger 4 in the whole wind turbine generator system-level test center.
Specifically, the concentrated cooling system of the wind generating set system level test center relates to a plurality of subsystems, namely a plurality of heat generating unit heat exchangers 4, and the working heat and the operating time of the plurality of heat generating unit heat exchangers 4 are different, so that the concentrated cooling system can operate efficiently and save energy, and corresponding power adjustment can be performed on high-power components in the system, such as the water pump 21, the external heat exchanger 1 and the branch end heat exchanger 12, by combining the total heat exchange capacity of the system. This application embodiment combines heat transfer theory formula through circulation medium inlet temperature, the temperature of returning the liquid, the circulation flow of each heat production unit heat exchanger 4, can try to get the circulation heat transfer volume, carries out the accumulative total to the circulation heat transfer volume that each heat production unit heat exchanger 4 got, can obtain the total heat transfer volume W value of system.
When the total heat exchange amount of the centralized cooling system is less than or equal to the heat exchange amount A, a single external heat exchanger 1 is started and is in a passive heat exchange mode, and at the moment, a single water pump in the system runs at 50% of power; when the total heat exchange amount of the centralized cooling system is between the heat exchange amount A and the heat exchange amount B, a single external heat exchanger 1 is started and is in an active heat exchange mode, and at the moment, a single water pump 21 in the system runs at full power; when the total heat exchange amount of the system is between the heat exchange amount B and the heat exchange amount C, the two external heat exchangers 1 are simultaneously started and are in an active heat exchange mode, the active heat exchange corresponding fan is in a half-power operation mode, and the two water pumps 21 in the centralized cooling system run in parallel at full power; when the total heat exchange amount W of the system is larger than the heat exchange amount C, the external heat exchangers 1 are simultaneously started and are in an active heat exchange mode, the active heat exchange corresponding fan is in a full-power operation mode, and the water pumps 21 in the system run in parallel at full power.
Optionally, the heat generating unit corresponding to the heat generating unit heat exchanger 4 comprises at least one of the following: the device comprises a dragging motor, a hydraulic loading system, a tested motor, a frequency converter, a tested alternating current system, a fatigue test bed, an environment simulator, a power grid simulator and a stress testing cabin. In the embodiment of the present application, the heat generating unit is, for example, a driving motor of a transmission testing subsystem, a driving motor of a variable flow testing subsystem, a hydraulic loading system of a pitch and yaw testing subsystem, and the like.
As an example, in the embodiment shown in fig. 2, the heat generating unit heat exchanger 4 comprises all of the components described above. When the branch end heat exchanger 12 is provided in the embodiment of the present application, the branch end heat exchanger 12 communicates with the heat generating unit heat exchangers 4 in a one-to-one correspondence.
Referring to fig. 2, in practical application, the centralized cooling system of the embodiment of the present application provides a constant flow rate of cooling liquid through the liquid inlet valve 22 and the liquid outlet valve 23 of the flow regulating assembly 2, provides a constant pressure of cooling liquid through the first pressure stabilizing device 6 and the second pressure stabilizing device 32, performs heat exchange inside each heat generating unit heat exchanger 4 that needs to be cooled, and through the heat exchange, a part of heat energy emitted by the heat generating unit heat exchanger 4 is transferred to the cooling liquid circulated in the centralized cooling system, so as to obtain a cooling liquid meeting an operating temperature, and the heated circulating cooling liquid is conveyed to the external heat exchanger 1 through pressurization of the power plant water pump 21, so as to realize heat transfer, and thus the circulation is repeated.
Further, the water pump 21 of each water pump assembly provides power for the centralized cooling system, and conveys the cooled circulating cooling liquid passing through the external heat exchanger 1 to the branch end heat exchanger 12, and then repeatedly circulates and exchanges heat through the first collecting pipeline 103. The external heat exchanger 1 transfers the heat corresponding to each branch end heat exchanger 12 to the external environment, thereby obtaining low-temperature cooling liquid for the centralized cooling system.
Optionally, the cooling liquid is a non-antifreeze liquid. Since the coolant in the embodiment of the present application is a non-antifreeze, when the coolant is in a solidified state, the coolant needs to be heated, thereby realizing a circulating flow of the coolant.
Optionally, the outer wall of each external heat exchanger 1 is provided with a third temperature sensor; the monitoring temperature end of the third temperature sensor is suspended in the air and used for monitoring the temperature of the external environment; the bottom of each external heat exchanger 1 is provided with a fourth temperature sensor for monitoring the temperature inside the external heat exchanger 1. All temperature sensors in the embodiments of the present application may be the same or different.
Optionally, the first branch pipe 101 is provided with at least one layer of heat insulating cotton or electric tracing band for preventing the cooling liquid from solidifying, so that the cooling liquid can circulate.
Optionally, the centralized cooling system further comprises: at least one heater;
the heater is arranged at least one of the following positions: the bottom of each external heat exchanger 1, a first branch line 101, a first collecting line 103, a second return line 104. The heater is used for preventing the cooling liquid from solidifying and enabling the cooling liquid to flow circularly.
The energy-saving control principle of the embodiment of the application is as follows: when a third temperature sensor for monitoring the external environment temperature monitors that the environment temperature is lower than Tt1And when the centralized cooling system is in a non-working state, the heater at the bottom of the external heat exchanger 1 is started at the moment; when the third temperature sensor monitors that the ambient temperature is lower than Tt2And the accumulated low-temperature time is less than t1In the meantime, except for starting the heater at the bottom of the external heat exchanger 1, the spray pump of the external heat exchanger 1 needs to be started; when a third temperature sensor for monitoring the external environment temperature monitors that the environment temperature is lower than Tt2And when accumulated low temperature is higher than t1And is less than t3When the temperature is high, a heater at the bottom of the external heat exchanger 1 is started, and a spray pump of the external heat exchanger 1 is started; starting the electric tracing band of the first branch pipeline 101 and starting the water pump 21; when a third temperature sensor for monitoring the external environment temperature monitors that the environment temperature is lower than Tt2And the accumulated low temperature duration is greater than t3When the temperature is high, a heater at the bottom of the external heat exchanger 1 is started, and a spray pump of the external heat exchanger 1 is started; the electric tracing band of the first branch line 101 is turned on, the water pump 21 is started, and the heaters of the first collecting line 103 and the second return line 104 are started.
Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
The terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description only, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting. When an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (11)
1. A centralized cooling system, comprising: at least one external heat exchanger (1), a flow regulating assembly (2) for controlling the flow of the cooling liquid and a purification treatment assembly (3) for purifying the cooling liquid;
liquid outlets of the external heat exchangers (1) are communicated with a liquid inlet of the flow regulating assembly (2) through a first branch pipeline (101);
the liquid outlet of the flow regulating assembly (2) is divided into two paths, one path is communicated with the liquid inlet of the purification treatment assembly (3) through a first return pipeline (102), and the other path is communicated with the liquid inlets of heat generating unit heat exchangers (4) of a system-level test of the wind generating set through a first collecting pipeline (103);
the liquid outlet of the purification treatment component (3) is communicated with the liquid inlet of each external heat exchanger (1);
and the liquid outlet of each heat generating unit heat exchanger (4) is communicated with the liquid inlet of each external heat exchanger (1) through a second return pipeline (104).
2. Concentrated cooling system according to claim 1, characterized in that said flow regulation assembly (2) comprises at least one group of water pump assemblies;
the liquid inlet of each group of water pump components is connected in parallel to be used as a liquid inlet of the flow regulating component (2);
the liquid outlet of each group of water pump assemblies is connected in parallel to be used as the liquid outlet of the flow regulating assembly (2);
each group of water pump components comprises a water pump (21), a liquid inlet valve (22) arranged at the liquid inlet of the water pump (21) and a liquid outlet valve (23) arranged at the liquid outlet of the water pump (21).
3. The centralized cooling system of claim 1, wherein at least one of the following is provided on the first collection line (103):
the device comprises a pressure sensor (5), a first pressure stabilizer (6) and a first temperature sensor (7).
4. Concentrated cooling system according to claim 1, characterized in that the purification treatment assembly (3) comprises a first filter (31) for purifying the water and a second pressure-stabilizing device (32) for maintaining a constant pressure of the cooling liquid.
5. The centralized cooling system of claim 1, wherein the second return line (104) has at least one of:
a second temperature sensor (8), a flow rate measuring device (9), a water return valve (10), and a second filter (11).
6. The centralized cooling system of claim 1, further comprising at least one branch end heat exchanger (12);
the first liquid inlet of each branch end heat exchanger (12) is communicated with the first collecting pipeline (103);
a first liquid outlet and a second liquid inlet of each branch tail end heat exchanger (12) are correspondingly communicated with a liquid inlet and a liquid outlet of a heat generating unit heat exchanger (4);
the second liquid outlet of each branch end heat exchanger (12) is communicated with the second return pipeline (104).
7. Centralized cooling system according to claim 1, wherein the heat generating unit to which the heat generating unit heat exchanger (4) corresponds comprises at least one of:
the device comprises a dragging motor, a hydraulic loading system, a tested motor, a frequency converter, a tested alternating current system, a fatigue test bed, an environment simulator, a power grid simulator and a stress testing cabin.
8. The centralized cooling system of claim 1, wherein the cooling fluid is a non-antifreeze fluid.
9. Concentrated cooling system according to claim 8, characterized in that the outer wall of each external heat exchanger (1) is provided with a third temperature sensor;
the temperature monitoring end of the temperature sensor is suspended in the air and used for monitoring the temperature of the external environment;
and the bottom of each external heat exchanger (1) is provided with a fourth temperature sensor for monitoring the temperature in the external heat exchanger (1).
10. Concentrated cooling system according to claim 9, characterized in that the first branch line (101) is provided with at least one layer of heat insulating cotton or electric tracing band.
11. The centralized cooling system of claim 9, further comprising: at least one heater;
the heater is arranged at least one of the following positions:
the bottom of each external heat exchanger (1), a first branch pipeline (101), a first collecting pipeline (103) and a second return pipeline (104).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922232798.3U CN211116425U (en) | 2019-12-12 | 2019-12-12 | Centralized cooling system |
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| CN201922232798.3U CN211116425U (en) | 2019-12-12 | 2019-12-12 | Centralized cooling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113193702A (en) * | 2021-04-29 | 2021-07-30 | 中国华能集团清洁能源技术研究院有限公司 | Dragging motor coupling cooling system and method |
| CN113775490A (en) * | 2021-09-28 | 2021-12-10 | 中国船舶重工集团海装风电股份有限公司 | Design method of centralized water cooling system of wind generating set |
-
2019
- 2019-12-12 CN CN201922232798.3U patent/CN211116425U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113193702A (en) * | 2021-04-29 | 2021-07-30 | 中国华能集团清洁能源技术研究院有限公司 | Dragging motor coupling cooling system and method |
| CN113775490A (en) * | 2021-09-28 | 2021-12-10 | 中国船舶重工集团海装风电股份有限公司 | Design method of centralized water cooling system of wind generating set |
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