CN111594903A - Hydraulic balance control system and hydraulic balance control method - Google Patents
Hydraulic balance control system and hydraulic balance control method Download PDFInfo
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- CN111594903A CN111594903A CN202010465694.1A CN202010465694A CN111594903A CN 111594903 A CN111594903 A CN 111594903A CN 202010465694 A CN202010465694 A CN 202010465694A CN 111594903 A CN111594903 A CN 111594903A
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- 238000000034 method Methods 0.000 title claims description 20
- 238000004378 air conditioning Methods 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 128
- 230000001105 regulatory effect Effects 0.000 claims description 22
- 239000002699 waste material Substances 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000013480 data collection Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000011897 real-time detection Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F13/02—Ducting arrangements
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a hydraulic balance control system and a hydraulic balance control system thereof, wherein the hydraulic balance control system comprises an adjusting component, an acquisition component and a control component, the adjusting component comprises a first adjusting part and a second adjusting part, the first adjusting part is arranged on a main pipeline of an air conditioning device, the second adjusting part is arranged on a branch pipeline of the air conditioning device, the acquisition component comprises a first acquisition module and a second acquisition module, the first acquisition module is used for acquiring the pressure difference of the main pipeline, the second acquisition module is used for acquiring the pressure difference of the branch pipeline, the first acquisition module and the second acquisition module are respectively and electrically connected with the control component, and the first adjusting part and the second adjusting part are respectively and electrically connected with the control component. The hydraulic balance control system realizes the hierarchical regulation, the dynamic balance and the intercommunication complementation, realizes the dynamic balance of the hydraulic system of the air conditioning device, and avoids the waste of resources.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to a hydraulic balance control system. The invention also relates to a hydraulic balance control method.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
At present, large buildings (such as hospitals and office buildings) are generally heated or cooled through an air conditioning device, the air conditioning device generally comprises a host, a water collector, a water distributor, a main pipeline and a plurality of branch pipelines, wherein the host is arranged on the main pipeline, the main pipeline is respectively communicated with the water collector and the water distributor, two ends of each branch pipeline are respectively communicated with the water collector and the water distributor, the branch pipelines are arranged at positions needing heating or cooling, water circulates in the main pipeline and the branch pipelines and exchanges heat with a use space, and therefore heating and cooling requirements of the large buildings are met.
However, since the use load of the air conditioner in a large building is greatly changed (for example, the use load in the daytime is larger than the use load in the nighttime), the water circulation cannot be effectively matched with the use load, so that the hydraulic balance control effect is not good, and the waste of resources is caused.
Disclosure of Invention
The invention aims to at least solve the problem of resource waste caused by poor hydraulic balance control effect. The purpose is realized by the following technical scheme:
a first aspect of the present invention provides a hydraulic balance control system for an air conditioning apparatus of a large building, the hydraulic balance control system comprising:
the adjusting assembly comprises a first adjusting piece and a second adjusting piece, the first adjusting piece is arranged on a main pipeline of the air conditioner, and the second adjusting piece is arranged on a branch pipeline of the air conditioner;
the collecting assembly comprises a first collecting module and a second collecting module, the first collecting module is used for collecting the pressure difference of the main pipeline, and the second collecting module is used for collecting the pressure difference of the branch pipeline;
the first acquisition module and the second acquisition module are respectively electrically connected with the control assembly, and the first adjusting piece and the second adjusting piece are respectively electrically connected with the control assembly.
According to the hydraulic balance control system, when the hydraulic balance control system is used for an air conditioner of a large building, the first acquisition module acquires the pressure difference of the main pipeline, the second acquisition module acquires the pressure difference of the branch pipelines and respectively feeds the pressure difference of the main pipeline and the pressure difference of the branch pipelines back to the control assembly, and when the pressure difference of the main pipeline changes greatly, the control assembly controls the first regulating part to increase the flow rate of water in the main pipeline; when the pressure difference of the main pipeline is not changed greatly and the pressure difference of the branch pipeline is changed, the control component controls the second adjusting component to increase the flow rate of water in the branch pipeline.
The hydraulic balance control system realizes the hierarchical regulation, the dynamic balance and the intercommunication complementation, realizes the dynamic balance of the hydraulic system of the air conditioning device, and avoids the waste of resources.
In addition, the hydraulic balance control system according to the invention can also have the following additional technical characteristics:
in some embodiments of the invention, the first acquisition module comprises:
the first acquisition unit is arranged on a water collector of the air conditioning device;
and the second acquisition unit is arranged on the water separator of the air conditioning device.
In some embodiments of the invention, the first acquisition unit is a first pressure sensor;
and/or the second acquisition unit is a second pressure sensor.
In some embodiments of the present invention, the second collecting module includes third collecting units, the number of the third collecting units is the same as the number of the branch pipelines, the third collecting unit is disposed on any one of the branch pipelines, and the third collecting unit is disposed near the water collector.
In some embodiments of the present invention, the second collection module includes fourth collection units, the number of the fourth collection units is the same as the number of the branch pipelines, the fourth collection unit is disposed on any one of the branch pipelines, and the third collection unit is disposed near the water separator.
In some embodiments of the invention, the third acquisition unit is a third pressure sensor;
and/or the fourth acquisition unit is a fourth pressure sensor.
In some embodiments of the invention, the control assembly includes a controller electrically connected to the first and second conditioning members, the first and second acquisition modules, respectively.
In some embodiments of the present invention, the first adjusting member is a first water pump and is located between a water collector of the air conditioner and a main machine of the air conditioner, and the control assembly further includes a first frequency converter, and the first water pump is electrically connected to the controller through the first frequency converter.
In some embodiments of the present invention, the second adjusting member is an electric control valve, the number of the electric control valves is the same as the number of the branch pipes, the electric control valve is disposed on any one of the branch pipes, and the electric control valve is disposed near a water collector of the air conditioner;
and/or the second regulating part is a second water pump, the control assembly further comprises a second frequency converter, the number of the second water pumps is consistent with that of the branch pipelines, the second water pumps are arranged on any branch pipeline, the number of the second frequency converters is consistent with that of the second water pumps, and the second frequency converters and the second water pumps are correspondingly arranged.
A second aspect of the present invention proposes a hydraulic balance control method implemented by the hydraulic balance control method as described above, the hydraulic balance control method including the steps of:
acquiring the pressure of the water separator;
acquiring the pressure of a water collector;
acquiring the pressure of an inlet of a branch pipeline;
acquiring the pressure of an outlet of the branch pipeline;
comparing the pressure of the water separator with the pressure of the water collector to obtain a first pressure difference;
comparing the pressure at the inlet of the branch line with the pressure at the outlet of the branch line to obtain a second pressure difference;
increasing the flow rate of the first regulating member according to the first pressure difference being greater than a first preset value;
and increasing the flow of the second regulating part according to the condition that the first pressure difference is smaller than the first preset value and the second pressure difference is larger than the second preset value.
According to the hydraulic balance control method, a first acquisition unit acquires the pressure of a water collector in real time, a second acquisition unit acquires the pressure of a water separator in real time, a third acquisition unit acquires the pressure of an outlet position of a branch pipeline in real time, a fourth acquisition unit acquires the pressure of an inlet position of the branch pipeline in real time, the first acquisition unit, the second acquisition unit and the third acquisition unit respectively feed back the acquired pressures to a controller, the controller obtains a first pressure difference and a second pressure difference through calculation, the controller carries out preliminary judgment on a hydraulic system of an air conditioning device by comparing the first pressure difference with a first preset value, when the first pressure difference is larger than the first preset value, the water flow of a main pipeline needs to be adjusted, and the controller controls a first water pump to increase the operating frequency of the first water pump so as to increase the flow of water in the main pipeline; when the first pressure difference is smaller than the first preset value and the second pressure difference is larger than the second preset value, the controller controls the second adjusting piece to increase the flow of water in the branch pipeline.
The hydraulic balance control system realizes the hierarchical regulation, the dynamic balance and the intercommunication complementation, realizes the dynamic balance of the hydraulic system of the air conditioning device, and avoids the waste of resources.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
fig. 1 is a view schematically showing the structure of a first embodiment of a hydraulic balance control system according to an embodiment of the present invention (black arrows in the figure indicate water flow directions);
FIG. 2 is a diagram schematically illustrating the structure of a second embodiment of a hydraulic balance control system according to an embodiment of the present invention (black arrows in the diagram indicate water flow directions);
fig. 3 fig. 1 schematically shows a flow chart of a hydraulic balance control method according to an embodiment of the invention.
The reference numbers are as follows:
100 is an air conditioning device;
101 is a host, 102 is a main pipeline, 103 is a water collector, 104 is a water separator, and 105 is a branch pipeline;
200 is a hydraulic balance control system;
210 is a control component, 211 is a controller, 212 is a first frequency converter, 213 is a second frequency converter;
220 is an acquisition component, 221 is a first acquisition module, 2211 is a first acquisition unit, 2212 is a second acquisition unit, 222 is a second acquisition module, 2221 is a third acquisition unit, and 2222 is a fourth acquisition unit;
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 3, according to an embodiment of the present invention, there is provided a hydraulic balance control system 200, the hydraulic balance control system 200 comprises a regulating component 230, a collecting component 220 and a control component 210, wherein the regulating component 230 comprises a first regulating part 231 and a second regulating part 232, the first regulating part 231 is arranged on a main pipeline 102 of the air-conditioning device 100, the second regulating component 230 is arranged on a branch pipeline 105 of the air-conditioning device 100, the collecting component 220 comprises a first collecting module 221 and a second collecting module 222, the first collecting module 221 is used for collecting the pressure difference of the main pipeline 102, the second collecting module 222 is used for collecting the pressure difference of the branch pipeline 105, the first collecting module 221 and the second collecting module 222 are respectively electrically connected with the control component 210, and the first regulating part 231 and the second regulating part 232 are respectively electrically connected with the control component 210.
Specifically, when the hydraulic balance control system 200 is used for an air conditioner of a large building, the first collecting module 221 collects a pressure difference of the main pipeline 102, the second collecting module 222 collects a pressure difference of the branch pipelines 105, and respectively feeds back the pressure difference of the main pipeline 102 and the pressure difference of the branch pipelines 105 to the control assembly 210, and when the pressure difference of the main pipeline 102 changes greatly, the control assembly 210 controls the first regulating member 231 to increase a flow rate of water in the main pipeline 102; when the pressure difference of the main pipe 102 does not vary much and the pressure difference of the branch pipe 105 varies, the control unit 210 controls the second regulating member 232 to increase the flow rate of water in the branch pipe 105. The hydraulic balance control system 200 realizes hierarchical adjustment, dynamic balance and intercommunication complementation, realizes the dynamic balance of the hydraulic system of the air conditioning device 100, and avoids the waste of resources.
It should be understood that the branch pipes 105 of the air conditioner 100 include a plurality of branch pipes 105, the second collecting module 222 is configured to collect a pressure difference of each branch pipe 105, and feed back collected data to the control component 210, the second adjusting part 232 can independently adjust a flow rate of each branch pipe 105, when a pressure difference of any branch pipe 105 changes greatly, the controller 211 controls the second adjusting part 232 to adjust the branch pipe 105 with a large pressure change, so as to ensure an increase in a flow rate of water in the branch pipe 105, and further ensure a heating or cooling effect.
It is noted that the adjustment assembly 230 further includes a static flow balancing valve 233, a first valve 235 and a second valve 234, wherein the static flow balance valve 233 is arranged on the main pipeline 102 and is positioned between the main machine 101 of the air conditioner 100 and the water collector 103 of the air conditioner 100, the first valve 235 is arranged on the main pipeline 102 and is positioned between the main machine 101 and the water separator 104, the number of the second valves 234 is the same as that of the branch pipelines 105, one second valve 234 is arranged on each branch pipeline 105, wherein, the static flow balance valve 233, the first valve 235 and the second valve 234 are all electrically connected with the control component 210, the automatic control of each valve is realized through the control component 210, in addition, the control component 210 controls the adjusting component 230 according to the signal collected by the collecting component 220 in combination with a set control logic, thereby further realizing the dynamic balance of the hydraulic system of the air conditioner 100 and avoiding the waste of resources.
It is further understood that the first collection module 221 includes a first collection unit 2211 and a second collection unit 2212, the first collection unit 2211 is disposed on the water collector 103 of the air conditioner 100, and the second collection unit 2212 is disposed on the water separator 104 of the air conditioner 100. Specifically, an inlet of the branch pipeline 105 is communicated with the water separator 104, an outlet of the branch pipeline 105 is communicated with the water collector 103, the first collecting unit 2211 is arranged on the water collector 103, and the second collecting units 2212 are respectively arranged on the water separator 104, so that a pressure difference between a water outlet of the main pipeline 102 and a water inlet of the main pipeline 102 can be accurately obtained, accuracy of pressure difference detection of the main pipeline 102 is further ensured, and control accuracy of the hydraulic balance control system 200 is improved.
It should be understood that, since the water collector 103 is a position where the backflow of each branch pipe 105 converges, and the water separator 104 is a position where water is supplied to each branch pipe 105, the water collector 103 and the water separator 104 are sensitive to the pressure change of the main pipe 102, and the first collecting unit 2211 is disposed on the water collector 103, and the second collecting unit 2212 is disposed on the water separator 104, it is ensured that the first collecting unit 2211 and the second collecting unit 2212 can obtain accurate data, so that the pressure difference of the main pipe 102 is more accurate, and the control accuracy of the hydraulic balance control system 200 is ensured.
Further, the first collecting unit 2211 is a first pressure sensor. Specifically, first pressure sensor sets up on water collector 103 and is connected with control assembly 210 electricity, and pressure in the first pressure sensor real-time detection water collector 103 and real-time to control assembly 210 feedback, and first pressure sensor's is small, has effectively saved the space of installation, and simultaneously, the dismouting of being convenient for can effectively improve the efficiency of maintenance change, and in addition, the reaction is sensitive, has effectively guaranteed the accuracy of data collection for the precision of control has obtained further improvement.
In other embodiments, the first collecting unit 2211 is a first pressure gauge, which has low cost, and thus the overall cost of the hydraulic balance control system 200 is effectively reduced.
Specifically, the second collecting unit 2212 is a second pressure sensor. The second pressure sensor is arranged on the water separator 104 and is electrically connected with the control assembly 210, the second pressure sensor detects the pressure in the water collector 103 in real time and feeds back the pressure to the control assembly 210 in real time, the second pressure sensor is small in size, the installation space is effectively saved, meanwhile, the disassembly and assembly are convenient, the maintenance and replacement efficiency can be effectively improved, in addition, the reaction is sensitive, the accuracy of data acquisition is effectively guaranteed, and the control precision is further improved.
In other embodiments, the second collecting unit 2212 is a second pressure gauge, which has low cost, and thus the overall cost of the hydraulic balance control system 200 is effectively reduced.
Further, the second collection module 222 includes third collection units 2221, the number of the third collection units 2221 is the same as the number of the branch pipes 105, each branch pipe 105 is provided with a third collection unit 2221, and the third collection units 2221 are disposed close to the water collector 103. Specifically, the branch pipes 105 of the air conditioning device 100 are multiple, each branch pipe 105 is provided with one third collecting unit 2221, each third collecting unit 2221 is arranged at a position close to the water collector 103, each third collecting unit 2221 is electrically connected with the control component 210, and each third collecting unit 2221 collects the pressure of each branch pipe 105 in real time, so that the control component 210 can accurately obtain the pressure of each branch pipe 105 at a position close to the water collector 103, thereby providing an accurate basis for the control of the control component 210, and further improving the control precision of the hydraulic balance control system 200.
It should be noted that, since each branch pipe 105 is communicated with the water collector 103, the third collecting unit 2221 is disposed close to the water collector 103, so that the pressure at the water outlet of each branch pipe 105 is effectively collected, the influence of pressure fluctuation in the branch pipe 105 on the control precision is reduced, and the control accuracy of the hydraulic balance control system 200 is further ensured.
Further, the second collection module 222 includes fourth collection units 2222, the number of the fourth collection units 2222 is the same as the number of the branch pipes 105, a fourth collection unit 2222 is disposed on any branch pipe 105, and the third collection unit 2221 is disposed close to the water separator 104. Specifically, the branch pipes 105 of the air conditioning device 100 are multiple, each branch pipe 105 is provided with one fourth collecting unit 2222, each fourth collecting unit 2222 is arranged at a position close to the water separator 104, each fourth collecting unit 2222 is electrically connected with the control component 210, and each fourth collecting unit 2222 collects the pressure of each branch pipe 105 in real time, so that the control component 210 can accurately obtain the pressure of each branch pipe 105 at a position close to the water separator 104, thereby providing an accurate basis for the control of the control component 210, and further improving the control precision of the hydraulic balance control system 200.
It should be noted that, since each branch pipe 105 is communicated with the water separator 104, the fourth collecting unit 2222 is disposed close to the water separator 104, so that the pressure at the water inlet of each branch pipe 105 is effectively collected, the influence of pressure fluctuation in the branch pipe 105 on the control precision is reduced, and the control accuracy of the hydraulic balance control system 200 is further ensured.
Further, the third collecting unit 2221 is a third pressure sensor. Specifically, third pressure sensor sets up on branch pipeline 105 and is connected with control assembly 210 electricity, and the pressure of the delivery port of third pressure sensor real-time detection branch pipeline 105 just feeds back to control assembly 210 in real time, and third pressure sensor's is small, has effectively saved the space of installation, and simultaneously, the dismouting of being convenient for can effectively improve the efficiency of maintenance change, and in addition, the reaction is sensitive, has effectively guaranteed the accuracy of data collection for the precision of control has obtained further improvement.
In other embodiments, the third collecting unit 2221 is a third pressure gauge, which has a low cost, and thus the overall cost of the hydraulic balance control system 200 is effectively reduced.
Specifically, the fourth collection unit 2222 is a fourth pressure sensor. Fourth pressure sensor sets up on branch pipeline 105 and is connected with control assembly 210 electricity, and fourth pressure sensor real-time detection branch pipeline 105's the water inlet the pressure and feed back to control assembly 210 in real time, and fourth pressure sensor's is small, has effectively saved the space of installation, and simultaneously, the dismouting of being convenient for can effectively improve the efficiency of maintenance change, and in addition, the reaction is sensitive, has effectively guaranteed the accuracy of data collection for the precision of control has obtained further improvement.
In other embodiments, the fourth collecting unit 2222 is a fourth pressure gauge, which has a low cost, and thus the overall cost of the hydraulic balance control system 200 is effectively reduced.
Further, the control assembly 210 includes a controller 211, and the controller 211 is electrically connected to the first adjuster 231, the second adjuster 232, the first collection module 221 and the second collection module 222, respectively. Specifically, the controller 211 receives the pressure difference of the main pipeline 102 collected by the first collecting module 221 and the pressure difference of the branch pipeline 105 collected by the second collecting module 222 in real time, and judges the current conditions of the main pipeline 102 and the branch pipeline 105 through comparison, and the controller 211 starts the first adjusting part 231 or the second adjusting part 232 according to the judgment result, so as to adjust the hydraulic balance control system 200, further realize the dynamic balance of the hydraulic system of the air conditioning device 100, and avoid the waste of resources.
It should be noted that a first preset value, a second preset value and a calculation and judgment logic are prestored in the controller 211, the first acquisition unit 2211, the second acquisition unit 2212 and the third acquisition unit 2221 respectively feed back the acquired pressures to the controller 211, the controller 211 obtains a first pressure difference and a second pressure difference through calculation, the controller 211 performs preliminary judgment on the hydraulic system of the air conditioning device 100 by comparing the first pressure difference with the first preset value, when the first pressure difference is greater than the first preset value, the water flow of the main pipeline 102 needs to be adjusted, and the controller 211 controls the first water pump to increase the operating frequency of the first water pump, so as to increase the water flow of the main pipeline 102; when the first pressure difference is smaller than the first preset value and the second pressure difference is larger than the second preset value, the controller 211 controls the second adjusting member 232 to increase the flow rate of water in the branch pipe 105, so that the dynamic balance of the hydraulic system is realized, and the waste of resources is avoided.
Further, the first adjusting member 231 is a first water pump and is located between the water collector 103 of the air conditioner 100 and the main unit 101 of the air conditioner, and the control assembly 210 further includes a first inverter 212, and the first water pump is electrically connected to the controller 211 through the first inverter 212. Specifically, the controller 211 is connected to the first water pump through the first frequency converter 212, and when the flow of the main water pipe needs to be adjusted, the controller 211 adjusts the operating frequency of the first water pump by adjusting the frequency of the first frequency converter 212, so that the adjustment of the flow of water in the main pipeline 102 is realized, the adjustment of the hydraulic system is realized, and the air conditioning device 100 is ensured to provide a stable and efficient cold source for a large building.
It should be appreciated that the first water pump has a simple structure and low cost, and effectively reduces the cost of the hydraulic balance control system 200.
In one embodiment, the second adjusting member 232 is an electric control valve, the number of the electric control valves is the same as the number of the branch pipes 105, and an electric control valve is disposed on any one of the branch pipes 105 and is disposed near the water collector 103 of the air conditioner 100. Specifically, the quantity of branch pipeline 105 is a plurality of, all is equipped with an electrical control valve on each branch pipeline 105 to each electrical control valve all is connected with controller 211 electricity, when needs adjust arbitrary branch pipeline 105, controller 211 control electrical control valve starts, thereby the aperture of adjustment electrical control valve, and then realize the regulation of branch pipeline 105 flow, overall structure is simple, low in manufacturing cost, in addition, electrical control valve's precision is high, further improves hydraulic balance control system 200's overall control precision.
In an embodiment, the second adjusting element 232 is a second water pump, the control assembly 210 further includes second frequency converters 213, the number of the second water pumps is equal to the number of the branch pipes 105, any branch pipe 105 is provided with a second water pump, the number of the second frequency converters 213 is equal to the number of the second water pumps, and the second frequency converters 213 are disposed corresponding to the second water pumps. Specifically, the number of the branch pipes 105 is multiple, each branch pipe 105 is provided with a second water pump and a second frequency converter 213, each second water pump is electrically connected with the controller 211 through the corresponding second frequency converter 213, when any branch pipe 105 needs to be adjusted, the controller 211 adjusts the operating frequency of the second water pump by adjusting the frequency of the first frequency converter, so that the adjustment of the flow rate of water in the branch pipe 105 is realized, the adjustment of a hydraulic system is realized, and the air conditioning device 100 is ensured to provide a stable and efficient cold source for a large building. In addition, the requirement change of the tail end to the flow can be better met by arranging the second water pump and the second frequency converter 213, and the power consumption of the air conditioning device 100 is reduced.
The invention also provides a hydraulic balance control method, which is implemented by the hydraulic balance control method, and comprises the following steps:
acquiring the pressure of the water separator 104;
acquiring the pressure of the water collector 103;
acquiring the pressure of the inlet of the branch pipe 105;
acquiring the pressure of the outlet of the branch pipe 105;
comparing the pressure of the water separator 104 with the pressure of the water collector 103 to obtain a first pressure difference;
comparing the pressure at the inlet of the branch pipe 105 with the pressure at the outlet of the branch pipe 105 to obtain a second pressure difference;
increasing the flow rate of the first regulating member 231 according to the first pressure difference being greater than the first preset value;
the flow rate of the second regulating member 232 is increased according to the first pressure difference being less than the first preset value and the second pressure difference being greater than the second preset value.
Specifically, the first collecting unit 2211 collects the pressure of the water collector 103 in real time, the second collecting unit 2212 collects the pressure of the water separator 104 in real time, the third collecting unit 2221 collects the pressure of the outlet position of the branch pipe 105 in real time, the fourth collecting unit 2222 collects the pressure of the inlet position of the branch pipe 105 in real time, the first collecting unit 2211, the second collecting unit 2212 and the third collecting unit 2221 respectively feed back the respective collected pressures to the controller 211, the controller 211 obtains a first pressure difference and a second pressure difference through calculation, the controller 211 compares the first pressure difference with a first preset value, the hydraulic system of the air conditioner 100 is preliminarily judged, and when the first pressure difference is greater than the first preset value, the water flow of the main pipeline 102 needs to be adjusted, and the controller 211 controls the first water pump to increase the operating frequency of the first water pump, so as to increase the water flow in the main pipeline 102; when the first pressure difference is smaller than the first preset value and the second pressure difference is larger than the second preset value, the controller 211 controls the second adjusting member 232 to increase the flow rate of the water in the branch pipe 105.
The hydraulic balance control method realizes the hierarchical adjustment, the dynamic balance and the intercommunication complementation, realizes the dynamic balance of the hydraulic system of the air conditioning device 100, and avoids the waste of resources.
It should be noted that the method for controlling hydraulic balance of the present application is suitable for air conditioning systems with large load demand differences of the branch pipes 105, such as air conditioning systems in buildings such as office buildings, hospitals and schools.
If in the air conditioning system of the hospital, the load requirements of partial outpatients and partial departments at night are low, and the load requirements of wards and operating rooms are high, by adopting the control hydraulic balance control method, the proportion is distributed according to the needs according to the load requirements of all branch pipelines 105, the change of the whole flow demand is adjusted through the frequency conversion of the water pump, the delivery and the reasonable distribution of the cooling capacity according to the demand are realized, and the control hydraulic balance control method can save 20 to 30 percent of the cooling capacity in the air conditioning system of the hospital.
For example, in the air conditioning system of the integrated office building, the change of the external condition and the temperature and the change of the number of people in the building cause the change of the load in the building frequently, the method for controlling the hydraulic balance is adopted to monitor the operation parameters of each branch pipeline 105, adjust the flow of each branch pipeline 105 in time according to the load characteristics of different branch pipelines 105 and adjust the flow in real time according to the requirement, and the method for controlling the hydraulic balance is adopted to save the cold energy by 10 to 20 percent in the air conditioning system of the integrated office building.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A hydraulic balance control system for an air conditioning unit of a large building, the hydraulic balance control system comprising:
the adjusting assembly comprises a first adjusting piece and a second adjusting piece, the first adjusting piece is arranged on a main pipeline of the air conditioner, and the second adjusting piece is arranged on a branch pipeline of the air conditioner;
the collecting assembly comprises a first collecting module and a second collecting module, the first collecting module is used for collecting the pressure difference of the main pipeline, and the second collecting module is used for collecting the pressure difference of the branch pipeline;
the first acquisition module and the second acquisition module are respectively electrically connected with the control assembly, and the first adjusting piece and the second adjusting piece are respectively electrically connected with the control assembly.
2. The hydraulic balance control system of claim 1, wherein the first acquisition module comprises:
the first acquisition unit is arranged on a water collector of the air conditioning device;
and the second acquisition unit is arranged on the water separator of the air conditioning device.
3. The hydraulic balance control system of claim 2, wherein the first acquisition unit is a first pressure sensor;
and/or the second acquisition unit is a second pressure sensor.
4. The hydraulic balance control system of claim 3, wherein the second collection module comprises a number of third collection units corresponding to the number of branch lines, the third collection units are disposed on any of the branch lines, and the third collection units are disposed near the water collector.
5. The hydraulic balance control system of claim 4, wherein the second collection module comprises fourth collection units, the number of the fourth collection units is the same as the number of the branch pipelines, the fourth collection unit is arranged on any branch pipeline, and the third collection unit is arranged close to the water separator.
6. The hydraulic balance control system of claim 5, wherein the third acquisition unit is a third pressure sensor;
and/or the fourth acquisition unit is a fourth pressure sensor.
7. The hydraulic balance control system of any one of claims 1 to 6, wherein the control assembly comprises a controller electrically connected to the first and second adjusters and the first and second acquisition modules, respectively.
8. The hydraulic balance control system of claim 7, wherein the first adjusting member is a first water pump and is located between a water collector of the air conditioning device and a main machine of the air conditioner, and the control assembly further comprises a first frequency converter, and the first water pump is electrically connected with the controller through the first frequency converter.
9. The hydraulic balance control system according to claim 8, wherein the second adjusting member is an electric control valve, the number of the electric control valves is the same as the number of the branch pipes, the electric control valve is provided on any one of the branch pipes, and the electric control valve is provided near a water collector of the air conditioner;
and/or the second regulating part is a second water pump, the control assembly further comprises a second frequency converter, the number of the second water pumps is consistent with that of the branch pipelines, the second water pumps are arranged on any branch pipeline, the number of the second frequency converters is consistent with that of the second water pumps, and the second frequency converters and the second water pumps are correspondingly arranged.
10. A hydraulic balance control method implemented by the hydraulic balance control method according to any one of claims 1 to 9, characterized by comprising the steps of:
acquiring the pressure of the water separator;
acquiring the pressure of a water collector;
acquiring the pressure of an inlet of a branch pipeline;
acquiring the pressure of an outlet of the branch pipeline;
comparing the pressure of the water separator with the pressure of the water collector to obtain a first pressure difference;
comparing the pressure at the inlet of the branch line with the pressure at the outlet of the branch line to obtain a second pressure difference;
increasing the flow rate of the first regulating member according to the first pressure difference being greater than a first preset value;
and increasing the flow of the second regulating part according to the condition that the first pressure difference is smaller than the first preset value and the second pressure difference is larger than the second preset value.
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| CN112781130A (en) * | 2020-12-30 | 2021-05-11 | 深圳市前海能源科技发展有限公司 | Energy-saving control method for delivery pump based on regional centralized cooling and heating system |
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| CN113623722A (en) * | 2021-08-19 | 2021-11-09 | 山东华迪智能技术有限公司 | Heating method and system based on terminal room temperature parameter |
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| CN113623722A (en) * | 2021-08-19 | 2021-11-09 | 山东华迪智能技术有限公司 | Heating method and system based on terminal room temperature parameter |
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