CN113719988A - Self-adaptive energy pressure difference balance type electric adjusting system and adjusting method - Google Patents
Self-adaptive energy pressure difference balance type electric adjusting system and adjusting method Download PDFInfo
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- CN113719988A CN113719988A CN202111034179.9A CN202111034179A CN113719988A CN 113719988 A CN113719988 A CN 113719988A CN 202111034179 A CN202111034179 A CN 202111034179A CN 113719988 A CN113719988 A CN 113719988A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- 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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses a self-adaptive energy pressure difference balance type electric adjusting system and an adjusting method; the system comprises a valve body part and a control part; the valve body part comprises a static balance valve and an electric regulating valve; the control part comprises an energy metering unit, a pressure difference balancing unit and an acquisition processing unit; the air conditioner comprises an air conditioner water supply pipeline, an air conditioner water return pipeline, an air conditioner and a movable differential pressure measuring instrument, wherein one end of the air conditioner water supply pipeline is communicated with a water inlet of the air conditioner, and a water outlet of the air conditioner is communicated with the air conditioner water return pipeline; two measuring columns of the movable differential pressure measuring instrument are respectively connected to two different positions on a water return pipeline of the air conditioner; the self-adaptive energy pressure difference balance type electric regulating system realizes the correction processing of the initial target valve position of the electric regulating valve, and the temperature control precision of the system after the correction processing is higher.
Description
Technical Field
The invention relates to the field of intelligent control, in particular to a self-adaptive energy pressure difference balance type electric adjusting system and an adjusting method.
Background
It is known that the opening of a control regulating valve is influenced by the indoor return air temperature in an air conditioning system, so that the indoor temperature is ensured not to have an operation state exceeding a set target value for a long time. Because the influence of a loop pressure head can generate redundant pressure difference applied to the valve, the redundant pressure difference index can influence the regulation control characteristic of the stroke-flow of the regulating valve, and the interference of the redundant pressure difference larger than a set value on the regulating valve is shielded in a self-operated mode (a spring/a diaphragm) in the existing scheme, so that the regulation control characteristic of the regulating valve is ensured.
Researchers have found that because existing solutions implement the function of shielding differential pressure variations through mechanical mechanisms, they can only work for one differential pressure indicator after the product is manufactured and set in place. It is clear that the research considers that the existing solution can not really realize the pressure difference accurate balance treatment.
Disclosure of Invention
The invention aims to provide a self-adaptive energy pressure difference balance type electric adjusting system and an adjusting method, which can really realize effective control on indoor temperature only after comprehensive judgment through comprehensively detecting various data and solve the technical problems pointed out in the prior art.
The invention provides a self-adaptive energy pressure difference balance type electric adjusting system, which comprises a valve body part and a control part, wherein the valve body part is provided with a valve body opening and a valve body opening;
wherein the valve body part comprises a static balance valve and an electric regulating valve; the control part comprises an energy metering unit, a pressure difference balancing unit and an acquisition processing unit;
the air conditioner water supply pipeline is communicated with a water inlet of the air conditioner, and a water outlet of the air conditioner is communicated with the air conditioner water return pipeline; two measuring columns of the movable differential pressure measuring instrument are respectively connected to two different positions on a water return pipeline of the air conditioner;
the movable differential pressure measuring instrument is used for measuring differential pressure data at two different positions on a water return pipeline of the air conditioner and sending the differential pressure data to the acquisition and processing unit; the acquisition processing unit is also used for acquiring pressure difference data at two ends of the static balance valve;
the acquisition processing unit is used for acquiring the indoor temperature of a room to obtain the current indoor temperature and acquiring an indoor temperature set value; monitoring pressure difference data at two ends of the static balance valve under the full-open state of a return water pipeline of the air conditioner to obtain initial flow indexes at two ends of a target fixed circulation capacity original piece; collecting the temperature of the water supply side of a water supply pipeline of the air conditioner and the temperature of the water return side of a water return pipeline of the air conditioner;
the energy metering unit is used for acquiring the temperature of the water supply side of the water supply pipeline of the air conditioner and the temperature of the water return side of the water return pipeline of the air conditioner, and calculating to obtain the current temperature difference of the water supply temperature and the water return temperature; acquiring flow data of a water supply pipeline of the air conditioner in real time by calculating the flow of the air conditioner; calculating the real-time consumed air conditioner consumed energy according to the temperature difference of the water supply and return temperature and the flow data;
the energy metering unit is also used for calculating according to the current indoor temperature and the indoor temperature set value to obtain environment temperature difference data; performing access calculation according to a historical database to obtain the output energy required by the air conditioner corresponding to the current environmental temperature difference data; the energy metering unit is used for initially calculating target valve position information of the electric regulating valve according to the relation between the consumed energy of the air conditioner and the energy output required by the air conditioner and sending the initially calculated target valve position information to the differential pressure balancing unit for correction processing;
the pressure difference balancing unit is used for monitoring the fluctuation variation of the pressure difference data at the two ends of the static balance valve, calculating the additionally increased deviation pressure difference which is not beneficial to control precision on the electric regulating valve when the pressure difference fluctuation variation on the static balance valve is increased, and correcting the initial target valve position information according to the deviation pressure difference.
Preferably, as one possible embodiment; the pressure difference balancing unit comprises a monitoring module, a triggering module, a first calculating module, a second calculating module and a parameter correcting module:
the monitoring module is used for monitoring the differential pressure data at the two ends of the static balance valve;
the triggering module is used for triggering and promoting fluctuation change of the pressure difference data at two ends of the static balance valve;
the first calculation module is used for monitoring and calculating the fluctuation variation of the pressure difference data at the two ends of the static balance valve, namely the pressure difference fluctuation variation, after monitoring the fluctuation variation of the pressure difference data at the two ends of the static balance valve; when the pressure difference fluctuation variation on the static balance valve monitored in real time is increased, monitoring the flow index change deviation values at two ends of the target fixed circulation capacity original, and calculating the additionally increased deviation pressure difference on the electric regulating valve according to the flow index change deviation values;
the second calculation module is used for solving and calculating the stroke variable of the electric control valve according to the characteristic curve relation of the flow index corresponding to the stroke variable of the electric control valve;
and the parameter correction module is used for correcting the initial target valve position information by taking the stroke variable of the electric regulating valve as a correction parameter.
Accordingly, a regulation method, using an adaptive energy-pressure-difference-balanced electrodynamic regulation system, comprises the following operating steps:
s100, an energy metering unit acquires the temperature of a water supply side of a water supply pipeline of the air conditioner and the temperature of a water return side of a water return pipeline of the air conditioner, and calculates to obtain the current temperature difference of the water supply and return temperatures; the energy metering unit is used for acquiring the flow passing through the air conditioner and calculating the flow data of the water supply pipeline of the air conditioner in real time; calculating the real-time consumed air conditioner consumed energy according to the temperature difference of the water supply and return temperature and the flow data;
step S200, calculating by an energy metering unit according to the current indoor temperature and an indoor temperature set value to obtain environmental temperature difference data; performing access calculation according to a historical database to obtain the output energy required by the air conditioner corresponding to the current environmental temperature difference data; the energy metering unit is used for initially calculating target valve position information of the electric regulating valve according to the relation between the consumed energy of the air conditioner and the energy output required by the air conditioner and sending the initially calculated target valve position information to the differential pressure balancing unit for correction processing;
and S300, monitoring the fluctuation variation of the pressure difference data at the two ends of the static balance valve by a pressure difference balancing unit, calculating the additionally increased deviation pressure difference which is not beneficial to control precision on the electric regulating valve when the fluctuation variation of the pressure difference on the static balance valve is increased, and correcting the initial target valve position information according to the deviation pressure difference.
Preferably, as one possible embodiment; before step S100 is executed, the method further includes performing, by the acquisition processing unit, an information acquisition operation:
step S10, the collecting and processing unit collects the pressure difference data on the return water pipeline of the air conditioner and the pressure difference data at the two ends of the static balance valve;
step S20, the acquisition processing unit sends acquired pressure difference data on a return water pipeline of the air conditioner and pressure difference data at two ends of the static balance valve to the pressure difference balancing unit;
step S30, the acquisition processing unit acquires the room temperature to obtain the current room temperature and acquires the set value of the room temperature; monitoring pressure difference data at two ends of the static balance valve under the full-open state of a return water pipeline of the air conditioner to obtain initial flow indexes at two ends of a target fixed circulation capacity original piece; the acquisition and processing unit acquires the temperature of the water supply side of the water supply pipeline of the air conditioner and the temperature of the water return side of the water return pipeline of the air conditioner.
Preferably, as one possible embodiment; in the process of executing step S300, the differential pressure balancing unit monitors a fluctuation variation amount of differential pressure data at two ends of the static balance valve, calculates an additionally increased deviation differential pressure that is not beneficial to control accuracy on the electrical control valve when the fluctuation variation amount of differential pressure on the static balance valve is increased, and performs a correction processing operation on initial target valve position information according to the deviation differential pressure, specifically including the following operation steps:
step S310, the differential pressure balancing unit monitors differential pressure data at two ends of the static balancing valve;
step S320, triggering and promoting fluctuation change of the pressure difference data at two ends of the static balance valve;
step S330, after the fluctuation change of the pressure difference data at the two ends of the static balance valve is monitored, the fluctuation variable quantity of the pressure difference data at the two ends of the static balance valve, namely the pressure difference fluctuation variable quantity, is monitored and calculated; when the pressure difference fluctuation variation on the static balance valve monitored in real time is increased, monitoring the flow index change deviation values at two ends of the target fixed circulation capacity original, and calculating the additionally increased deviation pressure difference on the electric regulating valve according to the flow index change deviation values;
step S340, solving and calculating the stroke variable of the electric control valve according to the characteristic curve relation of the flow index corresponding to the stroke variable of the electric control valve;
and step S350, taking the stroke variable of the electric control valve as a correction parameter, and performing correction operation on initial target valve position information.
Preferably, as one possible embodiment; after step S350, the following steps are also included:
step S360, the differential pressure balancing unit sends the correction parameters to the electric regulating valve;
and step S370, the electric regulating valve receives the correction parameter to perform the operation of automatically regulating the stroke.
Preferably, as one possible embodiment; before the step S10 is executed, the method further includes the following steps of installing and connecting the mobile differential pressure measuring instrument for monitoring processing operation:
step S11: connecting two measuring columns on the movable differential pressure measuring instrument to two different position points on a water return pipeline of the air conditioner;
step S12: the movable differential pressure measuring instrument is in communication connection with the acquisition processing unit and sends differential pressure data at two different positions to the acquisition processing unit.
The application provides a self-adaptation energy pressure difference balanced type electric regulating system and regulating method, the technological effect that has:
according to the self-adaptive energy pressure difference balance type electric regulating system provided by the embodiment of the invention, a valve body part and a control part are mainly designed, wherein the valve body part comprises a static balance valve and an electric regulating valve; the control part comprises an energy metering unit, a pressure difference balancing unit and an acquisition processing unit; the system also comprises an air conditioner water supply pipeline, an air conditioner water return pipeline, an air conditioner and a movable differential pressure measuring instrument;
in specific application, the differential pressure balancing unit monitors fluctuation variation of differential pressure data at two ends of the static balancing valve; when the pressure difference fluctuation variation on the static balance valve is increased, calculating the additionally increased deviation pressure difference which is not beneficial to control precision on the electric regulating valve, and performing correction processing operation on the initial target valve position information according to the deviation pressure difference; therefore, the control mode can realize the adjustment processing of the initial target valve position information, finally realize the correction processing of the initial target valve position of the electric regulating valve, and the system temperature control precision after the correction processing is higher.
Drawings
FIG. 1 is a schematic diagram of an overall control architecture of an adaptive energy-pressure-difference-balanced electric control system;
FIG. 2 is a schematic diagram of the schematic structure of a control part in an adaptive energy-pressure difference balance type electric regulating system;
FIG. 3 is a schematic diagram of a pressure differential balancing unit in an adaptive energy pressure differential balancing-type electric regulating system;
fig. 4 is a schematic flow chart of an adjusting method according to an embodiment of the present invention.
Reference numbers: a static balance valve 11; an electric control valve 12; an air conditioner water supply line 13; an air conditioner return water line 14; an air conditioner 15; an energy metering unit 21; a differential pressure balancing unit 22; an acquisition processing unit 23.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Example one
Referring to fig. 1 to 3, the present invention provides an adaptive energy pressure difference balance type electric control system, including a valve body portion and a control portion;
wherein the valve body part comprises a static balance valve 11 and an electric regulating valve 12; the control part comprises an energy metering unit 21, a pressure difference balancing unit 22 and an acquisition processing unit 23; the electric regulating valve 12 can realize self-adaptive adjustment through the following calculation and analysis, and finally realize the correction processing operation on the initial target valve position information;
meanwhile, the self-adaptive energy pressure difference balance type electric adjusting system also comprises an air conditioner water supply pipeline 13, an air conditioner water return pipeline 14, an air conditioner 15 and a movable pressure difference measuring instrument, wherein one end of the air conditioner water supply pipeline 13 is communicated with a water inlet of the air conditioner 15, and a water outlet of the air conditioner 15 is communicated with the air conditioner water return pipeline 14; the two measuring columns of the movable differential pressure measuring instrument are respectively connected to two different positions on the air conditioner water return pipeline 14;
the movable differential pressure measuring instrument is used for measuring differential pressure data at two different positions on the air conditioner water return pipeline 14 and sending the differential pressure data to the acquisition and processing unit 23; the acquisition and processing unit 23 is further configured to acquire pressure difference data at two ends of the static balance valve 11;
the acquisition processing unit 23 is used for acquiring the indoor temperature of a room to obtain the current indoor temperature and acquiring an indoor temperature set value; monitoring the pressure difference data of two ends of the static balance valve 11 in the fully open state of the air conditioner water return pipeline 14 to obtain the initial flow indexes of two ends of the target fixed circulation capacity component; collecting the temperature of the water supply side of a water supply pipeline 13 of the air conditioner and the temperature of the water return side of a water return pipeline 14 of the air conditioner;
the energy metering unit 21 is configured to obtain a water supply side temperature of the water supply pipeline 13 of the air conditioner and a water return side temperature of the water return pipeline 14 of the air conditioner, and calculate a current temperature difference between the water supply temperature and the water return temperature; acquiring flow data of a water supply pipeline 13 of the air conditioner, which is calculated in real time according to the flow passing through the air conditioner; calculating the real-time consumed air conditioner energy consumption (namely the air conditioner energy consumption) of the air conditioner according to the temperature difference and the flow data of the water supply and return temperatures;
the energy metering unit 21 is further configured to calculate to obtain environment temperature difference data according to the current indoor temperature (10 ℃) and an indoor temperature set value; performing access calculation according to a historical database to obtain the output energy required by the air conditioner corresponding to the current environmental temperature difference data; the energy metering unit 21 is used for initially calculating target valve position information of the electric regulating valve according to the relation between the consumed energy of the air conditioner and the output energy required by the air conditioner, and sending the initially calculated target valve position information to the differential pressure balancing unit 22 for correction (namely, the final output result is an analog quantity signal);
the pressure difference balancing unit 22 is configured to monitor a fluctuation variation of pressure difference data at two ends of the static balance valve 11, calculate an additionally increased deviation pressure difference that is not beneficial to control accuracy on the electrical control valve 12 when the pressure difference fluctuation variation on the static balance valve 11 is increased, and perform a correction processing operation on initial target valve position information according to the deviation pressure difference.
Analyzing the self-adaptive energy pressure difference balance type electric regulating system, wherein the self-adaptive energy pressure difference balance type electric regulating system is mainly designed with a valve body part and a control part, wherein the valve body part comprises a static balance valve and an electric regulating valve; the control part comprises an energy metering unit, a pressure difference balancing unit and an acquisition processing unit; the system also comprises an air conditioner water supply pipeline, an air conditioner water return pipeline, an air conditioner and a movable differential pressure measuring instrument;
in specific application, the differential pressure balancing unit monitors fluctuation variation of differential pressure data at two ends of the static balancing valve; when the pressure difference fluctuation variation on the static balance valve is increased, calculating the additionally increased deviation pressure difference which is not beneficial to control precision on the electric regulating valve, and performing correction processing operation on the initial target valve position information according to the deviation pressure difference; therefore, the control mode can realize the adjustment processing of the initial target valve position information, finally realize the correction processing of the initial target valve position of the electric regulating valve, and the system temperature control precision after the correction processing is higher.
Referring to fig. 3, the differential pressure balancing unit 22 includes a monitoring module 221, a triggering module 222, first and second calculation modules 223 and 224, and a parameter modification module 225:
the monitoring module 221 is configured to monitor pressure difference data across the static balance valve 11;
a triggering module 222 for triggering a fluctuation of the differential pressure data across the static balancing valve 11;
the first calculating module 223 is configured to monitor and calculate a fluctuation variation amount of the differential pressure data at the two ends of the static balance valve 11, that is, a differential pressure fluctuation variation amount, after monitoring the fluctuation variation of the differential pressure data at the two ends of the static balance valve 11; when the pressure difference fluctuation variation on the static balance valve 11 monitored in real time is increased, monitoring the flow index change deviation values at the two ends of the target fixed circulation capacity original (namely the flow index reduction value, the difference between the initial flow index and the flow indexes at the two ends of the target fixed circulation capacity original is the flow index change deviation value), and calculating the additionally increased deviation pressure difference (namely the deviation pressure difference) on the electric regulating valve 12 according to the flow index change deviation value;
the second calculating module 224 is configured to solve and calculate a stroke variable of the electric control valve 12 according to a characteristic curve relationship of a flow index corresponding to the stroke variable of the electric control valve 12;
and a parameter correction module 225, configured to perform a correction operation on the initial target valve position information by using the stroke variable of the electric control valve 12 as a correction parameter.
Example two
Referring to fig. 4, correspondingly, a second embodiment of the present invention provides a regulation method, which utilizes an adaptive energy-pressure-difference-balancing electric regulation system, and includes the following operation steps:
step S100, an energy metering unit 21 obtains the temperature of the water supply side of the water supply pipeline 13 of the air conditioner and the temperature of the water return side of the water return pipeline 14 of the air conditioner, and calculates to obtain the current temperature difference of the water supply and return temperatures; the energy metering unit 21 is used for acquiring flow data of the air conditioner water supply pipeline 13, which is calculated in real time according to the flow passing through the air conditioner; calculating the real-time consumed air conditioner energy consumption (namely the air conditioner energy consumption) of the air conditioner according to the temperature difference and the flow data of the water supply and return temperatures;
step S200, calculating to obtain environment temperature difference data according to the current indoor temperature and an indoor temperature set value by using an energy metering unit 21; performing access calculation according to a historical database to obtain the output energy required by the air conditioner corresponding to the current environmental temperature difference data; the energy metering unit 21 is used for initially calculating target valve position information of the electric regulating valve according to the relation between the consumed energy of the air conditioner and the output energy required by the air conditioner, and sending the initially calculated target valve position information to the differential pressure balancing unit 22 for correction (namely, the final output result is an analog quantity signal);
step S300, the differential pressure balancing unit 22 monitors the fluctuation variation of the differential pressure data at the two ends of the static balance valve 11, calculates the additionally increased deviation differential pressure which is not beneficial to the control precision on the electric regulating valve 12 when the fluctuation variation of the differential pressure on the static balance valve 11 is increased, and corrects the initial target valve position information according to the deviation differential pressure.
Before step S100 is executed, the method further includes performing, by the acquisition processing unit 23:
step S10, the collecting and processing unit 23 collects the pressure difference data on the air conditioner water return pipeline 14 and the pressure difference data at the two ends of the static balance valve 11;
step S20, the acquisition processing unit 23 sends the acquired pressure difference data on the air conditioner water return pipeline 14 and the pressure difference data at the two ends of the static balance valve 11 to the pressure difference balancing unit 22;
step S30, the acquisition processing unit 23 acquires the room temperature to obtain the current room temperature and acquires the set value of the room temperature; monitoring the pressure difference data of two ends of the static balance valve 11 in the fully open state of the air conditioner water return pipeline 14 to obtain the initial flow indexes of two ends of the target fixed circulation capacity component; the collection processing unit 23 collects the temperature of the water supply side of the air conditioner water supply line 13 and the temperature of the water return side of the air conditioner water return line 14.
In the process of executing step S300, the differential pressure balancing unit 22 monitors a fluctuation variation of differential pressure data at two ends of the static balance valve 11, calculates an additionally increased deviation differential pressure that is not beneficial to control accuracy on the electrical control valve 12 when the fluctuation variation of differential pressure on the static balance valve 11 is increased, and performs a correction processing operation on the initial target valve position information according to the deviation differential pressure, specifically including the following operation steps:
step S310, the differential pressure balancing unit 22 monitors differential pressure data at two ends of the static balance valve 11;
step S320, triggering and promoting the fluctuation change of the pressure difference data at the two ends of the static balance valve 11;
step S330, after monitoring the fluctuation change of the pressure difference data at the two ends of the static balance valve 11, monitoring and calculating the fluctuation change quantity of the pressure difference data at the two ends of the static balance valve 11, namely the pressure difference fluctuation change quantity; when the pressure difference fluctuation variation on the static balance valve 11 monitored in real time is increased, monitoring the flow index change deviation values at the two ends of the target fixed circulation capacity original (namely the flow index reduction value, the difference between the initial flow index and the flow indexes at the two ends of the target fixed circulation capacity original is the flow index change deviation value), and calculating the additionally increased deviation pressure difference on the electric regulating valve 12 according to the flow index change deviation values (the deviation pressure difference is the additionally increased pressure difference on the electric regulating valve 12); it should be noted that the deviation pressure difference which is unfavorable for the control accuracy is actually caused by the fact that after the pressure difference on the static balance valve 11 is increased, the flow capacity corresponding to the stroke of the electric control valve 12 is reduced, so that the flow capacity of the electric control valve can be further reduced due to the change of the flow indexes at the two ends of the target fixed flow capacity element, and finally the deviation pressure difference is solved according to the value (i.e. the flow index change deviation value) of the reduction of the flow capacity;
step S340, solving and calculating the stroke variable of the electric regulating valve 12 according to the characteristic curve relation of the flow index corresponding to the stroke variable of the electric regulating valve 12;
and step S350, taking the stroke variable of the electric control valve 12 as a correction parameter, and performing correction operation on the initial target valve position information.
In the execution process of step S330, an additionally increased deviation pressure difference on the electric control valve 12 is calculated according to the flow index change deviation value, which specifically includes the following operation steps:
step S331, directly calculating a change of a pressure difference between two ends of the target fixed circulation capacity original caused by a reduction of the circulation capacity according to the target fixed circulation capacity original and the change deviation value of the flow index (the difference between the initial flow index and the flow index at two ends of the target fixed circulation capacity original is the change deviation value of the flow index, and since the section diameter, the material, the channel length and the like of the target fixed circulation capacity original are fixed values, the pressure change at two ends of the target fixed circulation capacity original can be obtained according to the change deviation value of the flow index, and the pressure change can be determined to be equal to the additionally increased deviation pressure difference on the electric regulating valve 12 through the change of the pressure difference; for example: the flow index change deviation value of the target fixed circulation capacity original piece can calculate the pressure difference change of two ends of the target fixed circulation capacity original piece;
and S332, calling the diameter and the channel length parameters of the electric regulating valve by using the differential pressure change value, and calculating to obtain the additionally increased deviation differential pressure on the electric regulating valve 12. For a target fixed flow capacity element, P is the pressure difference between the inlet and the outlet, the pipe length is set to be L, the specific resistance of the pipe is set to be S, and the flow rate Q is [ P/(pgSL) ] ^ (1/2). This pressure differential is linear with the length of the pipe, with longer pipe lengths giving greater pressure losses.
After step S350, the following steps are also included:
step S360, the differential pressure balancing unit 22 sends the correction parameters to the electric regulating valve 12;
and step S370, the electric regulating valve 12 receives the correction parameters to perform the operation of automatically regulating the stroke.
Before the step S10 is executed, the method further includes the following steps of installing and connecting the mobile differential pressure measuring instrument for monitoring processing operation:
step S11: connecting two measuring columns on the mobile differential pressure measuring instrument to two different positions on a water return pipeline 14 of the air conditioner;
step S12: the mobile differential pressure measuring instrument is in communication connection with the acquisition processing unit 23, and sends differential pressure data at two different positions to the acquisition processing unit 23.
The adjusting method adopted by the embodiment of the invention comprehensively considers various operating conditions and various main influence factors, provides an optimized control scheme, fully considers the balance unbalance problem caused by pressure difference change, and finally realizes intelligent coordination control by matching with a specific mechanical spray irrigation operation system through the stage, thereby realizing intelligent configuration of water delivery quantity and a water delivery mode.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; the technical solutions described in the foregoing embodiments can be modified by those skilled in the art, or some or all of the technical features can be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. An adaptive energy pressure difference balance type electric regulating system is characterized by comprising a valve body part and a control part;
wherein the valve body part comprises a static balance valve and an electric regulating valve; the control part comprises an energy metering unit, a pressure difference balancing unit and an acquisition processing unit;
the air conditioner water supply pipeline is communicated with a water inlet of the air conditioner, and a water outlet of the air conditioner is communicated with the air conditioner water return pipeline; two measuring columns of the movable differential pressure measuring instrument are respectively connected to two different positions on a water return pipeline of the air conditioner;
the movable differential pressure measuring instrument is used for measuring differential pressure data at two different positions on a water return pipeline of the air conditioner and sending the differential pressure data to the acquisition and processing unit; the acquisition processing unit is also used for acquiring pressure difference data at two ends of the static balance valve;
the acquisition processing unit is used for acquiring the indoor temperature of a room to obtain the current indoor temperature and acquiring an indoor temperature set value; monitoring pressure difference data at two ends of the static balance valve under the full-open state of a return water pipeline of the air conditioner to obtain initial flow indexes at two ends of a target fixed circulation capacity original piece; collecting the temperature of the water supply side of a water supply pipeline of the air conditioner and the temperature of the water return side of a water return pipeline of the air conditioner;
the energy metering unit is used for acquiring the temperature of the water supply side of the water supply pipeline of the air conditioner and the temperature of the water return side of the water return pipeline of the air conditioner, and calculating to obtain the current temperature difference of the water supply temperature and the water return temperature; acquiring flow data of a water supply pipeline of the air conditioner in real time by calculating the flow of the air conditioner; calculating the real-time consumed air conditioner consumed energy according to the temperature difference of the water supply and return temperature and the flow data;
the energy metering unit is also used for calculating according to the current indoor temperature and the indoor temperature set value to obtain environment temperature difference data; performing access calculation according to a historical database to obtain the output energy required by the air conditioner corresponding to the current environmental temperature difference data; the energy metering unit is used for initially calculating target valve position information of the electric regulating valve according to the relation between the consumed energy of the air conditioner and the energy output required by the air conditioner and sending the initially calculated target valve position information to the differential pressure balancing unit for correction processing;
the pressure difference balancing unit is used for monitoring the fluctuation variation of the pressure difference data at the two ends of the static balance valve, calculating the additionally increased deviation pressure difference which is not beneficial to control precision on the electric regulating valve when the pressure difference fluctuation variation on the static balance valve is increased, and correcting the initial target valve position information according to the deviation pressure difference.
2. The adaptive energy differential pressure balanced type electric regulator system according to claim 1, wherein the differential pressure balancing unit includes a monitoring module, a triggering module, first and second calculation modules, and a parameter correction module:
the monitoring module is used for monitoring the differential pressure data at the two ends of the static balance valve;
the triggering module is used for triggering and promoting fluctuation change of the pressure difference data at two ends of the static balance valve;
the first calculation module is used for monitoring and calculating the fluctuation variation of the pressure difference data at the two ends of the static balance valve, namely the pressure difference fluctuation variation, after monitoring the fluctuation variation of the pressure difference data at the two ends of the static balance valve; when the pressure difference fluctuation variation on the static balance valve monitored in real time is increased, monitoring the flow index change deviation values at two ends of the target fixed circulation capacity original, and calculating the additionally increased deviation pressure difference on the electric regulating valve according to the flow index change deviation values;
the second calculation module is used for solving and calculating the stroke variable of the electric control valve according to the characteristic curve relation of the flow index corresponding to the stroke variable of the electric control valve;
and the parameter correction module is used for correcting the initial target valve position information by taking the stroke variable of the electric regulating valve as a correction parameter.
3. A regulation method, characterized in that an adaptive differential-energy-pressure-balanced electrodynamic regulation system according to any one of claims 1-2 is used, comprising the following operating steps:
s100, an energy metering unit acquires the temperature of a water supply side of a water supply pipeline of the air conditioner and the temperature of a water return side of a water return pipeline of the air conditioner, and calculates to obtain the current temperature difference of the water supply and return temperatures; the energy metering unit is used for acquiring the flow passing through the air conditioner and calculating the flow data of the water supply pipeline of the air conditioner in real time; calculating the real-time consumed air conditioner consumed energy according to the temperature difference of the water supply and return temperature and the flow data;
step S200, calculating by an energy metering unit according to the current indoor temperature and an indoor temperature set value to obtain environmental temperature difference data; performing access calculation according to a historical database to obtain the output energy required by the air conditioner corresponding to the current environmental temperature difference data; the energy metering unit is used for initially calculating target valve position information of the electric regulating valve according to the relation between the consumed energy of the air conditioner and the energy output required by the air conditioner and sending the initially calculated target valve position information to the differential pressure balancing unit for correction processing;
and S300, monitoring the fluctuation variation of the pressure difference data at the two ends of the static balance valve by a pressure difference balancing unit, calculating the additionally increased deviation pressure difference which is not beneficial to control precision on the electric regulating valve when the fluctuation variation of the pressure difference on the static balance valve is increased, and correcting the initial target valve position information according to the deviation pressure difference.
4. The adjusting method of claim 3, further comprising, before performing step S100, performing an information acquisition operation by an acquisition processing unit:
step S10, the collecting and processing unit collects the pressure difference data on the return water pipeline of the air conditioner and the pressure difference data at the two ends of the static balance valve;
step S20, the acquisition processing unit sends acquired pressure difference data on a return water pipeline of the air conditioner and pressure difference data at two ends of the static balance valve to the pressure difference balancing unit;
step S30, the acquisition processing unit acquires the room temperature to obtain the current room temperature and acquires the set value of the room temperature; monitoring pressure difference data at two ends of the static balance valve under the full-open state of a return water pipeline of the air conditioner to obtain initial flow indexes at two ends of a target fixed circulation capacity original piece; the acquisition and processing unit acquires the temperature of the water supply side of the water supply pipeline of the air conditioner and the temperature of the water return side of the water return pipeline of the air conditioner.
5. The adjusting method according to claim 4, wherein during the step S300, the differential pressure balancing unit monitors a fluctuation variation of the differential pressure data across the static balance valve, calculates an additionally increased deviation differential pressure unfavorable for the control accuracy on the electric control valve when the fluctuation variation of the differential pressure across the static balance valve is increased, and performs a correction processing operation on the initial target valve position information according to the deviation differential pressure, and specifically includes the following steps:
step S310, the differential pressure balancing unit monitors differential pressure data at two ends of the static balancing valve;
step S320, triggering and promoting fluctuation change of the pressure difference data at two ends of the static balance valve;
step S330, after the fluctuation change of the pressure difference data at the two ends of the static balance valve is monitored, the fluctuation variable quantity of the pressure difference data at the two ends of the static balance valve, namely the pressure difference fluctuation variable quantity, is monitored and calculated; when the pressure difference fluctuation variation on the static balance valve monitored in real time is increased, monitoring the flow index change deviation values at two ends of the target fixed circulation capacity original, and calculating the additionally increased deviation pressure difference on the electric regulating valve according to the flow index change deviation values;
step S340, solving and calculating the stroke variable of the electric control valve according to the characteristic curve relation of the flow index corresponding to the stroke variable of the electric control valve;
and step S350, taking the stroke variable of the electric control valve as a correction parameter, and performing correction operation on initial target valve position information.
6. The adjusting method of claim 5, characterized in that after step S350, it further comprises the following operating steps:
step S360, the differential pressure balancing unit sends the correction parameters to the electric regulating valve;
and step S370, the electric regulating valve receives the correction parameter to perform the operation of automatically regulating the stroke.
7. The method of adjusting of claim 3, further comprising, before the step S10 is performed, installing a connected mobile differential pressure gauge for monitoring processing:
step S11: connecting two measuring columns on the movable differential pressure measuring instrument to two different position points on a water return pipeline of the air conditioner;
step S12: the movable differential pressure measuring instrument is in communication connection with the acquisition processing unit and sends differential pressure data at two different positions to the acquisition processing unit.
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