CN114577026A - Unmanned on duty circulating water station cloud intelligence accuse economizer system - Google Patents
Unmanned on duty circulating water station cloud intelligence accuse economizer system Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/14—Direct-contact trickle coolers, e.g. cooling towers comprising also a non-direct contact heat exchange
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C2001/006—Systems comprising cooling towers, e.g. for recooling a cooling medium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The invention discloses a cloud intelligent control energy-saving system of an unattended circulating water station, which is provided with a circulating loop formed by a tail end heat exchange assembly, a cooling tower and a water pump assembly, wherein a cloud intelligent control platform is configured as follows: determining a first theoretical value of the heat exchange amount Q4 of the end heat exchange assembly based on the first heat Q1 and the second heat Q2 generated by the material and the third heat Q3 of the heating agent or the cooling agent to the equipment and the treated material; determining the actual water consumption H of the circulation loop based on the temperature difference range of the circulation loop and the heat exchanged by the tail end heat exchange assembly required by material reaction; and determining the working performance parameters of the water pump assembly based on the actual water consumption and the pipe network pressure difference. This application adopts the reverse control mode, through terminal technology analysis, calculates true heat transfer volume and water supply volume in real time, and accurate control water supply volume, entire system are real-time data, and terminal technology becomes, then the water supply volume of water supply end also in time feeds back, keeps the accurate supply of terminal water yield constantly.
Description
Technical Field
The invention relates to the technical field of energy-saving systems, in particular to a cloud intelligent control energy-saving system of an unattended circulating water station.
Background
The circulating water station (also called circulating water system) in the current industrial field is a large energy-consuming user (power utilization + water utilization) and a large labor-consuming user of an energy consumption unit, a large amount of special staff is needed for management and maintenance, the staff usually accounts for dozens to hundreds of people, and thousands of people, and the energy consumption also accounts for more than 20 percent of the whole plant. The process and equipment of the existing circulating water system in China are relatively backward, the intelligent degree is low, manual operation is basically performed, the professional degree of personnel is not high, the system maintenance is not in place, and the maintenance cost is high. At the current critical period of epidemic situation prevention and control, how to improve quality, increase efficiency and convert digitalization becomes a work which needs to be considered by energy consumption unit circulating water station managers urgently. The emission reduction technology which can be provided in the market at present is basically limited to a pump system, intellectualization also floats on the surface, and a comprehensive technology for realizing deep intellectualization from the perspective of a full flow does not exist really, so that a real unattended pump station is not realized all the time.
The existing energy-saving reconstruction technology of the circulating water station is basically limited to a water pump and a motor in a pump room, and rarely relates to a system, and the basic principle is as follows: the high-efficiency energy-saving water pump and the high-efficiency energy-saving motor are directly purchased from the market through simply acquiring the operating parameters of the pump system, and the old water pump or the motor is replaced by a standard high-efficiency energy-saving product leaving the factory, so that the purposes of saving energy and improving the performance of equipment are achieved, and the system belongs to equipment replacement. In the current situation in China, due to the fact that energy consumption units lack professional energy-saving talents of circulating water stations, the lack of professional energy-saving knowledge of pump systems and the knowledge of energy saving still stay on equipment updating, and the knowledge of energy saving, process optimization energy saving, behavior energy saving and cloud intelligent control energy saving of equipment outside the pump systems is lacked, the energy-saving effect is general. Although the technology has certain energy-saving benefit, equipment is updated, the performance of a pump system is improved to a certain extent, the energy-saving potential of the pump system is far from being excavated, other links except the pump system are not involved, energy is not thoroughly saved, the energy-saving rate is generally 8% -10%, and a batch of circulating water pump energy-saving companies appear in China, and the energy-saving basic principle is as follows: the method comprises the steps of testing parameters such as current, voltage, water quantity and pressure of a pump system in detail through a professional detection tool, customizing a high-efficiency energy-saving water pump and a high-efficiency motor according to measured data, replacing the old water pump and the motor with the customized high-efficiency water pump and the customized high-efficiency motor, wherein the power saving rate is generally 10-15%, and after the high-efficiency energy-saving water pump and the customized high-efficiency motor are optimized by combining a pipeline and a valve, the power saving rate can be 20% (see a novel high-efficiency energy-saving water pump, and the patent number is ZL201821590903. X). The common characteristics of the prior art are that the water pump room is limited to work, the water pump system is focused on, the energy conservation of the whole flow of a circulating water station is not considered, and the process optimization energy conservation, the energy conservation of management specifications and the intelligent control of the whole flow are not considered.
Therefore, the cloud intelligent control energy-saving system for the unattended circulating water station can overcome the defects.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a cloud intelligent control energy-saving system of an unattended circulating water station.
The purpose of the invention is realized by the following technical scheme: the utility model provides an economizer system is controlled to unmanned on duty circulating water station cloud intelligence, the configuration is by terminal heat exchange assemblies, cooling tower and the common circulation circuit that constitutes of water pump assembly, terminal heat exchange assemblies with water pump assembly all communicatively couples to the platform is controlled to the cloud intelligence, the platform configuration is controlled to the cloud intelligence: s100, determining a first theoretical value of heat exchange quantity Q4 of the end heat exchange assembly based on a first heat quantity Q1 and a second heat quantity Q2 generated by the materials and a third heat quantity Q3 of a heating agent or a cooling agent, which is transmitted to the equipment and the materials to be processed; s101, determining the actual water consumption H of the circulation loop based on the temperature difference range of the circulation loop and the heat exchanged by the tail end heat exchange assembly required by material reaction; and S102, determining the working performance parameters of the water pump assembly based on the actual water consumption and the pipe network pressure difference.
Preferably, in the case where the cooling tower is coupled to a fan assembly, the cloud intelligent control platform is further configured to: s103, acquiring actual water consumption in real time, and generating a first control command based on the actual water consumption to adjust the working state of the water pump assembly, so that the water pump assembly can provide water according to the requirement; and S104, acquiring water temperature difference data of a water inlet and a water outlet of the tail end heat exchange assembly in real time, and adjusting the working state of the fan assembly when the water temperature difference data does not meet a control command so as to enable the water temperature difference data to meet the set requirement.
Preferably, the first theoretical value is determined by: setting a first theoretical value calculation formula Q1+ Q2+ Q3 as Q4; setting the first heat Q1 to calculate the formula Q1 ═ Σ mCp(T2-T1); setting the second heat Q2 to obtain the formula Q2 ═ nf (T)0V); setting a third heat calculation formula Q3 ═ DeltaH 1+ DeltaH 2+ ∑ DeltaHr，298kWherein Q1 is the first heat quantity generated by the material brought into the equipment, Q2 is the heat quantity transferred to the equipment and the treated material by the heating agent or the cooling agent, Q3 is the second heat quantity generated by the chemical reaction of the material, m is the mass of the material, CP is the average specific heat capacity of the material, T2 is the ambient temperature, T is the temperature of the environment1Is a reference temperature, n is a material thermal reaction constant, T0 is a material thermal reaction temperature, V is a material thermal reaction volume, delta H1 is the sum of enthalpy change and enthalpy change with phase change of materials entering a reactor in the process of isobaric temperature change, delta H2 is the sum of enthalpy change and enthalpy change with phase change of materials exiting the reactor in the process of isobaric temperature change, and sigma delta Hr,298kThe sum of the heat of reaction of all main and side reactions in the standard state, ni、n'iThe mass of material i in and out of the reactor, Cpi、C'piIsobaric heat capacity, Δ H, of material i to and from the reactori、ΔH'iIs the phase transition heat of the material i entering and exiting the reactor.
Preferably, the actual water consumption is determined according to the following steps: calculation formula for setting actual water consumption H
Wherein, Δ T ═ is (Tr-To), Q is the heat that the material reaction needs the end heat exchange assembly To exchange, C is the average specific heat capacity of the recirculated cooling water, Tr is the heat exchanger leaving water temperature, To is the heat exchanger entering water temperature, J is the design allowance.
Preferably, the determining the operating performance parameter of the water pump assembly comprises the following steps: determining the amount of circulating water based on a first theoretical value; and determining the required lift of the water pump according to the pressure difference between the water pump room and the water point at the farthest and highest tail end.
Preferably, the adjustment of the working state of the water pump assembly at least comprises the following steps: determining the power of a motor based on the power and allowance requirements of the motor matched with the water pump assembly; the motor is configured to be frequency conversion controlled or constant voltage controlled.
Preferably, the adjustment of the working state of the fan assembly comprises the following steps: in the actual circulation process, determining a standard value of water temperature difference data; generating a second control command to adjust the working state of the fan unit when the actually acquired water temperature difference data is not consistent with the standard value; when the actual water temperature difference data is smaller than the standard value, generating a second control command to reduce the air exhaust amount of the fan assembly so as to increase the actual water temperature difference data; or when the actual water temperature difference data is larger than the standard value, generating a second control command to increase the air exhaust quantity of the fan assembly so as to reduce the actual water temperature difference data.
Preferably, the terminal heat exchange assembly includes an evaporator, a liquid compensator, a condenser and a phase-change heat exchange tube, the liquid compensator is disposed in the evaporator, and the evaporator and the condenser are thermally coupled to each other through the phase-change heat exchange tube.
Preferably, the phase change heat exchange tube includes a vapor line and a condensation line, the vapor line is disposed in the evaporator, and the condensation line is disposed in the condenser.
Preferably, the vapor optical fiber and the condensation line both comprise a groove pipe, a capillary liquid absorption core and fins, the capillary liquid absorption core is arranged in the groove pipe, and the fins are arranged on the outer wall of the groove pipe.
The invention has the following advantages:
(1) the invention provides a reverse control cloud intelligent control technology, which utilizes a circulating water station reverse control logic, calculates the heat exchange quantity in real time, acquires the energy efficiency data in real time, analyzes and calculates big data, realizes the functions of real-time energy-saving measurement, self-correction of operation parameters, fault early warning and the like, and customizes high-efficiency intelligent equipment according to the reverse calculation result, so that a water pump is always operated in the most efficient region, the most power-saving state is achieved, the aim of real unattended operation is fulfilled, and a large amount of human resources are saved. The energy-saving technology of reverse control cloud intelligent control is different from the traditional speed regulation energy-saving technology in that: the traditional speed regulation control starts from a pump system, and rarely relates to the aspects of process and heat exchange, and the control signal source of the traditional speed regulation control does not produce a real required water quantity signal according to the process, but the traditional speed regulation control is an empirical value at present, so that the water quantity supply is not accurate, and energy is wasted; the traditional intelligent control mode is that a frequency converter is directly matched with a motor, analog signal parameters are set in the frequency converter, speed regulation control is carried out, the purposes of speed regulation control and energy conservation are achieved to a certain extent, but the traditional intelligent control mode is not thorough, the mode is backward, the frequency converter consumes power, the fault rate is high, more importantly, when the process production changes, the speed regulation is not timely, and the purposes of unattended operation and intellectualization are not achieved. The intelligent control aspect innovation point of this patent: adopt the reverse control mode, send out from terminal technology, through terminal process analysis, calculate true heat transfer volume and water supply volume in real time, through the diagnostic analysis module (the platform is controlled to the intelligence of cloud) of independently researching and developing, accurate control water supply volume, entire system are real-time data, and terminal technology becomes, then the water supply volume of water supply end also in time feeds back, keeps the accurate supply of terminal water yield constantly.
(2) The pump system frequency conversion debugging device solves the defects that under a constant working condition, the pump system frequency conversion debugging is basically ineffective, and under a variable working condition, the pump system frequency conversion speed regulation device is not thorough in energy conservation, and the frequency conversion device also needs to consume power and increase fault points; this patent need not variable frequency speed control device, starts from terminal heat transfer device, calculates the heat transfer volume in real time, and under the different ambient temperature, the circulation water yield is calculated out in reverse, and then the output water yield of control water pump and motor output, and the energy-efficient water pump of reverse design makes the water pump be in the interval operation of the most high efficiency all the time, reaches the most economize on work state, so no matter be permanent operating mode or become the operating mode, real speed governing function can all be realized to this patent.
(3) The energy-saving control system solves the defect of low energy-saving rate of the existing energy-saving technology, the existing energy-saving technology is local energy saving, equipment replacement and partial control, and process optimization, equipment and process management and full-flow intelligent control are not involved; the system has the advantages that real-time data calculation, acquisition, transmission, diagnosis and big data analysis are realized, the operation parameters are automatically and optimally combined, the water pump is ensured to be operated in a high-efficiency area constantly, the heat exchanger is ensured to keep high-efficiency heat exchange constantly, the energy is saved thoroughly, and the overall energy saving rate is 30% -60%.
Drawings
Fig. 1 is a schematic view of a modular structure of a cloud intelligent control energy-saving system of an unattended circulating water station according to the invention;
FIG. 2 is a schematic structural view of a terminal heat exchange assembly;
fig. 3 is a schematic structural diagram of a phase change heat exchange tube.
In the figure, a 1-cloud intelligent control platform, a 2-tail end heat exchange component, a 3-water pump component, a 4-cooling tower, a 5-fan component, a 2 a-evaporator, a 2 b-liquid compensator, a 2 c-condenser, a 2 d-phase change heat exchange tube, a 2 d-1-steam pipeline, a 2 d-2-condensation line, a 7-groove tube, an 8-capillary liquid absorption core and a 9-fin are arranged.
Detailed Description
The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:
example 1
As shown in fig. 1 to 3, the application provides an industrial circulating water station cloud intelligent control energy-saving system, which at least comprises a cloud intelligent control platform 1, a tail end heat exchange assembly 2, a water pump assembly 3, a cooling tower 4 and a fan assembly 5. The cloud intelligent control platform 1 is communicatively coupled to the terminal heat exchange assembly 2 and the water pump assembly 3. The cloud intelligent control platform 1 can determine a control strategy according to the real-time heat exchange quantity and the heat exchange efficiency of the tail end heat exchange assembly 2. The water pump assembly 3 can adjust its own operating state according to the amount of circulating water to change the amount of circulating water, and for example, the adjustment of the amount of circulating water can be realized by adjusting the power of the motor, the rotating speed, the opening size of the valve, and the like. The downstream of the water pump assembly 3 is communicated with the tail end heat exchange assembly 2. The downstream end of the end heat exchange assembly 2 is communicated with a cooling tower 4. The downstream of the cooling tower 4 is communicated with the water pump assembly 3. That is, the terminal heat exchange module 2, the water pump module 3, and the cooling tower 4 can form a closed circulation loop. The water pump assembly 3 can provide a driving force for the circulating flow of the fluid. The low-temperature fluid flows to the tail end heat exchange component 2 through the driving of the water pump component 3, and then can exchange heat with the tail end heat exchange component 2 to form high-temperature fluid. After the high-temperature fluid circularly flows to the cooling tower 4, the high-temperature fluid is cooled in the cooling tower to generate steam. The cooling tower 4 can be coupled to a fan assembly 5, and the generated water vapor can enter the fan assembly to drive the fan assembly 5 to work.
Preferably, the cloud intelligent control platform 1 is configured to determine the control strategy as follows:
a first theoretical value of the amount of heat exchange Q4 of the end heat exchange assembly 2 is determined based on the first heat Q1 and the second heat Q2 generated by the material and the third heat Q3 of the heating or cooling agent delivered to the equipment and the material being treated S100.
Preferably, the first theoretical value calculation formula of the heat exchange quantity Q4 of the end heat exchange assembly 2 is as follows:
Q1+Q2+Q3＝Q4+Q5+Q6
wherein Q1-the first heat, kJ, generated by the material being brought into the apparatus;
Q2-Heat transferred to the equipment and the material being treated by the heating or cooling agent, kJ;
q3-enthalpy change value (second heat) due to chemical reaction of the materials, kJ;
Q4-Heat consumed by Material leaving Heat exchange device (Heat exchange amount of end Heat exchange Assembly 2), kJ
Q5-Heat consumed by a heating or Cooling device (negligible), kJ
Q6-negligible heat loss from the device to the environment, kJ
Preferably, the first heat Q1 is calculated by the formula Q1 ═ Σ mCp(T2-T1), wherein m is the feedMass, kg; CP-average specific heat capacity of the material, kJ/(kg. degree. C.); t2 — ambient temperature, deg.c; t is1The base temperature, DEG C.
Preferably, the second heat Q2 is calculated by the formula Q2 ═ nf (T)0V), wherein n is the material thermal reaction constant; t0-temperature of thermal reaction of materials, ° C; v-volume of thermal reaction of the materials, cm3。
Preferably, the third heat Q3 is calculated by the formula Q3 ═ Δ H1 +/Δ H2 +. Σ Δ Hr，298kObtaining a mixture of, in which,
delta H1-the sum of the enthalpy change of the material entering the reactor during the isobaric temperature change and the enthalpy change with phase change, kJ;
delta H2-sum of enthalpy change of the material discharged from the reactor in the process of constant pressure and temperature change and enthalpy change when the material has phase change, kJ;
∑ΔHr,298kthe sum of the heats of reaction of all main and side reactions in the standard state, kJ;
ni、n'ithe mass of the material i entering and leaving the reactor, kmol/h;
Cpi、C'pi-the isobaric heat capacity, kJ/mol, of the material i entering and leaving the reactor;
ΔHi、ΔH'iheat of phase transition, kJ/mol, of the material i entering and leaving the reactor.
Preferably, the first theoretical value of the heat exchange amount Q4 is obtained based on a calculation formula Q4 ═ Σ AK (Tr-To), where a — heat exchange area of the end water device heat exchange plate, m2(ii) a K-Heat transfer coefficient of Heat exchange plate of Water-consuming end apparatus, W/m2DEG C; tr-heat exchanger water outlet temperature, DEG C; to-temperature of inlet water of heat exchanger, degree C. At a first theoretical value and a second theoretical valueWhen the deviation amount of (a) is larger than a set threshold value, the first theoretical value is corrected based on the second theoretical value. For example, when the deviation amount between the first theoretical value and the second theoretical value is greater than 10%, the first theoretical value and the second theoretical value may be averaged to achieve the purpose of correcting the first theoretical value.
And S101, determining the actual water consumption H of the circulation loop based on the temperature difference range of the circulation loop and the heat exchanged by the tail end heat exchange assembly required by material reaction.
The actual water consumption H is obtained by the following formula:
S102, determining the working performance parameters of the water pump assembly 3 based on the actual water consumption H and the pipe network pressure difference.
Preferably, the determination of the operating performance parameters of the water pump assembly 3 comprises the following steps: (1) through calculation of terminal heat load, determining circulating water quantity → (2) according to a pressure difference (equivalent to an altitude difference) between a water pump room and a farthest and highest terminal water consumption point, determining a required water pump lift → (3) according to a determined water pump flow and a determined lift value, designing a water pump mold → (4) according to a water pump type spectrum diagram of a manufacturer, determining materials of a water pump shell and an impeller → (5) through simulation calculation, designing a water pump structure, an impeller structure → (6) casting castings such as the water pump shell and the impeller → (7), processing and manufacturing, assembling → (8) balance test, performance test → (9) refitting the water pump (cavity turbulence fine adjustment, coating material adding, impeller appearance treatment, remote control data acquisition sensor integration and controller matching) → (10) simulating the field water consumption condition, and achieving design requirements (efficiency fine adjustment, coating material adding, impeller appearance treatment, remote control data acquisition sensor integration and controller matching) in a factory through performance test, Vibration, data acquisition, data analysis functions, etc.) → (11) shipping.
S103, acquiring actual water consumption in real time, and generating a first control command based on the actual water consumption to adjust the working state of the water pump assembly 3, so that the water pump assembly 5 can provide water according to needs, supply water in real time, and keep the optimal energy consumption state.
Preferably, the adjustment of the working state of the water pump assembly 5 can be realized by adjusting the power of a motor matched with the water pump assembly, and specifically includes the following steps: (1) according to the design of the matching power and the allowance of the water pump, determining the power of a motor → (2) according to the field installation condition, the use condition, the process change condition and the water quantity fluctuation condition, determining the frequency conversion control or the constant voltage control, determining the external dimension and the structural design of the motor → (3) designing the structure and the external shape of the motor according to the requirements, producing and manufacturing the motor → (4), testing the performance → (5) installing an online monitoring system → (6) and a test platform together with the water pump, simulating the field real water use condition, testing again, fine-adjusting → (7) and leaving the factory if the design requirement is met, and if the design requirement is not met, fine-adjusting the performance of the water pump and the motor again and testing again until the design requirement is completely met, and leaving the factory is achieved.
And S104, acquiring water temperature difference data of a water inlet and a water outlet of the tail end heat exchange assembly 2 in real time, and generating a second control command to adjust the working state of the fan assembly 5 under the condition that the water temperature difference data does not meet the set requirement, so that the water temperature difference data can meet the set requirement.
Specifically, during the actual cycle, the standard value of the water temperature difference data is determined. And generating a second control command to adjust the working state of the fan unit 5 when the actually acquired water temperature difference data is not consistent with the standard value. When the actual water temperature difference data is smaller than the standard value, a second control command is generated to reduce the air discharge amount of the fan assembly 5, so that the actual water temperature difference data is increased. Alternatively, when the actual water temperature difference data is larger than the standard value, a second control command is generated to increase the amount of air discharged from the fan assembly 5, thereby decreasing the actual water temperature difference data.
Preferably, fan subassembly 5 can be customized in order to satisfy the operating condition demand, and the customization process includes: (1) according to the requirement of the temperature difference of inlet and outlet water of the cooling tower and the environmental temperature, calculating the heat dissipation air volume required by temperature drop → (2) determining the specification and model of the fan and the matched power (standardized products, the type selection can be completed by manufacturers) → (3) determining the variable frequency control or the constant voltage control according to the field installation condition and the use condition, determining the external dimension and the structural design of the fan and the matched motor → (4) designing according to the requirements by manufacturers → (5) producing and manufacturing, and testing the performance → (6) installing an online monitoring system → (7) the fan and the motor on a test platform together, testing the air volume, the control and the stability → (7), if the design requirement is met, shipping, if the design requirement is not met, fine tuning is performed again, and testing is performed again until the design requirement is completely met, and shipping can be performed.
Example 2
Preferably, the industrial circulating water station cloud intelligent control energy-saving system further comprises a data acquisition component which is communicatively coupled to the cloud intelligent control platform 1. The data acquisition assembly at least comprises an intelligent water meter and an intelligent electric meter. The intelligent water meter is used for acquiring the flow and the pressure value of the circulation loop in real time. The intelligent electric meter is used for acquiring data such as power, power consumption, current, voltage and the like of each electric device in real time. For example, the outlet end of the water pump assembly 3, the inlet end of the terminal heat exchange assembly 2, and a passage between the terminal heat exchange assembly 2 and the cooling tower 4 may be provided with an intelligent water meter. Water pump assembly 3, cooling tower 4 and fan subassembly 5 all can be configured with smart electric meter in order to gather data such as its power, power consumption, electric current, voltage respectively.
Preferably, the data acquisition assembly can also be used for acquiring data such as flow, pressure, flow rate, resistance and the like of pipelines, valves and the like through the optical fiber conduction devices. Specifically, the optical fiber conduction device comprises an optical fiber, a ground analysis device and a control display, wherein the optical fiber is connected to the ground analysis device, and the ground analysis device comprises a transmitter, a receiver and an analysis box. The ground analysis device is connected to the control display. The installation mode of optic fibre includes two kinds, but one kind is the recovery type, and the water pipe is installed outward promptly, utilizes coupling protection card fixed, and ground resolver installs in circulation water station master control room, realizes the communication with the control display. The other type is a permanent type, namely a built-in water pipe is arranged, and the ground analysis device is arranged in a main control room of the circulating water station and is communicated with the control display.
The working principle of the optical fiber conduction device is as follows: the entire fiber itself is the sensor, and unlike conventional instrumentation probes, the fiber acts as a carrier for the emitted and reflected light, with physical properties such as temperature, pressure or deformation that can temporarily alter the properties of the backscattered light. A high-power narrow-pulse-width laser pulse is sent to an optical fiber through a ground analysis device to generate weak back scattering light. The physical properties of the optical fiber such as temperature, pressure or deformation can be accurately measured by analyzing the attenuation condition of the backscattered light. Thus, temperature, stress and acoustic wave data of tens of thousands of points on the length of the full optical fiber can be stably collected and analyzed in real time for a long time. The data collected by the optical fiber conduction device comprise circulating water flow, temperature, pressure and other data, and can be used for energy efficiency diagnosis analysis, pipeline resistance calculation and the like.
Preferably, the intelligent cloud control energy-saving system for the industrial circulating water station further comprises a fault acquisition component 7. The fault acquisition assembly 7 can acquire thermal imaging data of the water pump unit, the cooling tower 4, the fan assembly 5 and the like based on a thermal imaging technology. The thermal imaging data can be transmitted to the cloud intelligent control platform 1 to be analyzed and processed so as to judge whether the cloud intelligent control energy-saving system of the industrial circulating water station has faults or not. Specifically, the working principle of the thermal imaging technology is as follows: the invention utilizes an image troubleshooting tool to combine a reinforced three-dimensional system and a big data system to manage equipment fault hidden dangers, detect fault sources and waste sources of running equipment such as a motor and the like, solve the problem of the equipment fault hidden dangers while solving the problem of energy efficiency, eliminate the fault hidden dangers which can not be manually investigated under common conditions, such as mechanical installation problems, electrical problems, pipeline leakage problems, instruments, control systems, equipment loss problems and the like, thereby improving the reliability, stability and product quality of the equipment, and replacing manual fault troubleshooting, thereby improving the personal safety and production safety of workers. The thermal imaging technology adopts devices comprising: a micro-vibration image detection instrument, an infrared thermal imaging detection instrument (high frame rate), a noise leakage point imaging detection instrument, an ultraviolet imaging detection instrument, an ultrasonic imaging detector, a controller and the like. The controller can be an analysis center, a hidden danger file center, and data collected by detection instruments such as a micro-vibration image detection instrument, an infrared thermal imaging detection instrument (high frame rate), a noise leakage point imaging detection instrument, an ultraviolet imaging detection instrument, an ultrasonic imaging detector and the like can be transmitted to the controller for analysis and processing.
Preferably, the terminal heat exchange assembly 2 includes an evaporator 2a, a liquid compensator 2b, a condenser 2c, and a phase-change heat exchange tube 2 d. The liquid compensator is arranged in the evaporator, and the evaporator and the condenser are thermally coupled through the phase-change heat exchange pipe. The phase-change heat exchange tube is an efficient two-phase heat transfer device, a capillary force generated by a capillary core in an evaporator is used for driving a loop to operate, and heat is transferred by evaporation and condensation of a working medium, so that a large amount of heat can be transferred under the conditions of small temperature difference and long distance. The heat source of the phase-change heat exchange tube is an evaporator, a high-performance capillary core is arranged in the phase-change heat exchange tube, a liquid compensator connected with the evaporator is arranged on a liquid return pipeline and integrated with the evaporator, and the inside of the phase-change heat exchange tube is connected with the evaporator through an auxiliary core; the cold source is a condenser; the heat source and the cold source are connected by a phase change heat exchange pipe. The phase change heat exchange tube comprises a steam pipeline and a condensation line, the steam pipeline is arranged in the evaporator, and the condensation line is arranged in the condenser.
Preferably, the phase-change heat exchange tube 2d includes a vapor line 2d-1 and a condensation line 2 d-2. Vapor line 2d-1 and condensate line 2d-2 each include a grooved tube 7, a capillary wick 8, and fins 9. Capillary wicks 8 are disposed in grooved tubes 7, and fins 9 are disposed on the outer walls of grooved tubes 7.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an economizer system is controlled to unmanned on duty circulating water station cloud intelligence, the configuration is by terminal heat exchange assemblies (2), cooling tower (4) and water pump assembly (3) the common circulation circuit who constitutes, its characterized in that, terminal heat exchange assemblies (2) with water pump assembly (3) all communicatively couple to cloud intelligence accuse platform (1), cloud intelligence accuse platform (1) configuration is:
s100, determining a first theoretical value of heat exchange quantity Q4 of the end heat exchange component (2) based on the first heat quantity Q1 and the second heat quantity Q2 generated by the materials and the third heat quantity Q3 of the heating agent or the cooling agent transferred to the equipment and the processed materials;
s101, determining the actual water consumption H of the circulation loop based on the temperature difference range of the circulation loop and the heat exchanged by the tail end heat exchange assembly required by material reaction;
s102, determining working performance parameters of the water pump assembly (3) based on actual water consumption and pipe network pressure difference.
2. The unattended circulating water station cloud intelligent control energy saving system according to claim 1, wherein with the cooling tower (4) coupled to a fan assembly (5), the cloud intelligent control platform (1) is further configured to:
s103, acquiring actual water consumption in real time, and generating a first control command based on the actual water consumption to adjust the working state of the water pump assembly (3) so that the water pump assembly (3) can provide water according to the requirement;
and S104, acquiring water temperature difference data of a water inlet and a water outlet of the tail end heat exchange assembly (2) in real time, and adjusting the working state of the fan assembly (5) when the water temperature difference data does not meet a control command so as to enable the water temperature difference data to meet the set requirements.
3. The cloud intelligent-control energy-saving system for the unattended circulating water station according to claim 1, wherein the first theoretical value is determined by:
setting a first theoretical value calculation formula Q1+ Q2+ Q3 as Q4;
the first heat Q1 is set to the formula Q1 ═ ΣmCp(T2-T1)；
Setting the second heat Q2 to obtain the formula Q2 ═ nf (T)0,V)；
Setting a third heat calculation formula Q3 ═ DeltaH 1+ DeltaH 2+ ∑ DeltaHr，298kWherein Q1 is the first heat quantity generated by the material brought into the equipment, Q2 is the heat quantity transferred to the equipment and the treated material by the heating agent or the cooling agent, Q3 is the second heat quantity generated by the chemical reaction of the material, m is the mass of the material, CP is the average specific heat capacity of the material, T2 is the ambient temperature, T is the temperature of the environment1Is a reference temperature, n is a material thermal reaction constant, T0 is a material thermal reaction temperature, V is a material thermal reaction volume, delta H1 is the sum of enthalpy change and enthalpy change with phase change of materials entering a reactor in the process of isobaric temperature change, delta H2 is the sum of enthalpy change and enthalpy change with phase change of materials exiting the reactor in the process of isobaric temperature change, and sigma delta Hr,298kThe sum of the heat of reaction of all main and side reactions in the standard state, ni、n’iThe mass of material i in and out of the reactor, Cpi、C’piIsobaric heat capacity, Δ H, of material i to and from the reactori、ΔH’iIs the phase transition heat of the material i entering and exiting the reactor.
4. The cloud intelligent control energy-saving system for the unattended circulating water station according to claim 1, wherein the actual water consumption is determined according to the following steps:
calculation formula for setting actual water consumption H
Wherein, Δ T ═ is (Tr-To), Q is the heat that the material reaction needs the end heat exchange assembly To exchange, C is the average specific heat capacity of the recirculated cooling water, Tr is the heat exchanger leaving water temperature, To is the heat exchanger entering water temperature, J is the design allowance.
5. The cloud intelligent control energy-saving system for the unattended circulating water station according to claim 1, wherein the step of determining the working performance parameters of the water pump assembly (3) comprises the steps of:
determining the amount of circulating water based on a first theoretical value; and determining the required lift of the water pump according to the pressure difference between the water pump room and the water point at the farthest and highest tail end.
6. The cloud intelligent control energy-saving system for the unattended circulating water station according to claim 2, wherein the adjustment of the working state of the water pump assembly (3) comprises at least the following steps:
determining the power of the motor based on the power and allowance requirements of the motor matched with the water pump assembly (5); the motor is configured to be frequency conversion controlled or constant voltage controlled.
7. The cloud intelligent control energy-saving system for the unattended circulating water station according to claim 2, wherein the adjustment of the working state of the fan assembly (5) comprises the following steps:
in the actual circulation process, determining a standard value of water temperature difference data;
generating a second control command to adjust the working state of the fan unit (5) when the actually acquired water temperature difference data is inconsistent with the standard value;
when the actual water temperature difference data is smaller than the standard value, generating a second control command to reduce the air exhaust amount of the fan component (5) so that the actual water temperature difference data is increased; or when the actual water temperature difference data is larger than the standard value, generating a second control command to increase the air discharge amount of the fan component (5) so as to reduce the actual water temperature difference data.
8. The unattended circulating water station cloud intelligent control energy saving system according to claim 1, wherein the terminal heat exchange assembly (2) comprises an evaporator (2a), a liquid compensator (2b), a condenser (2c) and a phase change heat exchange pipe (2d), the liquid compensator (2b) is disposed in the evaporator (2a), and the evaporator (2a) and the condenser (2c) are thermally coupled to each other through the phase change heat exchange pipe (2 d).
9. The cloud intelligent control energy saving system of the unattended circulating water station according to claim 8, wherein the phase change heat exchange pipe (2d) comprises a steam line (2d-1) and a condensation line (2d-2), the steam line (2d-1) is disposed in the evaporator (2a), and the condensation line (2d-2) is disposed in the condenser (2 c).
10. The cloud intelligent energy-saving system for the unattended circulating water station according to claim 9, wherein the steam optical fiber (2d-1) and the condensation line (2d-2) each comprise a grooved tube (7), a capillary wick (8) and a fin (9), the capillary wick (8) is arranged in the grooved tube (7), and the fin (9) is arranged on the outer wall of the grooved tube (7).
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102542120A (en) * | 2012-01-17 | 2012-07-04 | 浙江科维节能技术有限公司 | Method for designing energy-saving type circulating cooling water system |
| CN102853712A (en) * | 2011-06-27 | 2013-01-02 | 上海隆协电子科技有限公司 | Circulating water cooling system for cooling towers |
| JP2016125771A (en) * | 2015-01-05 | 2016-07-11 | アズビル株式会社 | Power force optimization system |
| CN205400834U (en) * | 2016-02-04 | 2016-07-27 | 河南心连心化肥有限公司 | Ultralow grade waste heat power generation device of technology gas |
| CN209246757U (en) * | 2018-12-04 | 2019-08-13 | 四川长虹空调有限公司 | A kind of cold loop circuit heat pipe of list |
| CN110793379A (en) * | 2019-11-19 | 2020-02-14 | 上海颢世环境能源科技有限公司 | Circulating water management equipment, circulating system and management method based on cooling tower |
| US20210088264A1 (en) * | 2018-10-05 | 2021-03-25 | S. A. Armstrong Limited | Feed Forward Flow Control of Heat Transfer System |
| CN112797526A (en) * | 2021-02-03 | 2021-05-14 | 蔚海建 | Energy-saving industrial circulating water conveying technology with different water supply temperatures and different temperature differences |
| CN213300222U (en) * | 2020-09-08 | 2021-05-28 | 汇创电气设备制造有限公司 | Intelligent control system of heat exchange station |
| CN112922810A (en) * | 2021-03-23 | 2021-06-08 | 上海东禹能源科技有限公司 | Intelligent control method and device for cooling water of air compressor |
| CN214148191U (en) * | 2020-10-28 | 2021-09-07 | 北京丰联奥睿科技有限公司 | Gravity heat pipe air conditioning system with liquid replenishing tank |
-
2022
- 2022-03-02 CN CN202210197165.7A patent/CN114577026B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853712A (en) * | 2011-06-27 | 2013-01-02 | 上海隆协电子科技有限公司 | Circulating water cooling system for cooling towers |
| CN102542120A (en) * | 2012-01-17 | 2012-07-04 | 浙江科维节能技术有限公司 | Method for designing energy-saving type circulating cooling water system |
| JP2016125771A (en) * | 2015-01-05 | 2016-07-11 | アズビル株式会社 | Power force optimization system |
| CN205400834U (en) * | 2016-02-04 | 2016-07-27 | 河南心连心化肥有限公司 | Ultralow grade waste heat power generation device of technology gas |
| US20210088264A1 (en) * | 2018-10-05 | 2021-03-25 | S. A. Armstrong Limited | Feed Forward Flow Control of Heat Transfer System |
| CN209246757U (en) * | 2018-12-04 | 2019-08-13 | 四川长虹空调有限公司 | A kind of cold loop circuit heat pipe of list |
| CN110793379A (en) * | 2019-11-19 | 2020-02-14 | 上海颢世环境能源科技有限公司 | Circulating water management equipment, circulating system and management method based on cooling tower |
| CN213300222U (en) * | 2020-09-08 | 2021-05-28 | 汇创电气设备制造有限公司 | Intelligent control system of heat exchange station |
| CN214148191U (en) * | 2020-10-28 | 2021-09-07 | 北京丰联奥睿科技有限公司 | Gravity heat pipe air conditioning system with liquid replenishing tank |
| CN112797526A (en) * | 2021-02-03 | 2021-05-14 | 蔚海建 | Energy-saving industrial circulating water conveying technology with different water supply temperatures and different temperature differences |
| CN112922810A (en) * | 2021-03-23 | 2021-06-08 | 上海东禹能源科技有限公司 | Intelligent control method and device for cooling water of air compressor |
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