CN103411473A - Combined energy-saving method of an industrial circulating water system and industrial circulating water combined energy-saving system - Google Patents
Combined energy-saving method of an industrial circulating water system and industrial circulating water combined energy-saving system Download PDFInfo
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Abstract
The invention provides a combined energy-saving method of an industrial circulating water system. The combined energy-saving method comprises the following steps of firstly obtaining energy consumed by all combined equipment by researching the industrial circulating water system, comparing with similar or simulating systems with advanced and energy-saving operation so as to obtain the quantity of all the combined equipment with more energy consumption; initially determining selectable energy-saving combination; carrying out energy-efficiency analysis on the system determined initially; analyzing investment recovery condition and the investment benefit after the energy-saving equipment is adopted; and then determining technical combination of the optimized and energy-saving equipment to form the industrial circulating water combined energy-saving system. The invention also provides the industrial circulating water combined energy-saving system. The industrial circulating water combined energy-saving system comprises a water cooling pond, a circulating pump, a heat exchanger and a cooling tower which are connected in sequence by pipelines, wherein the circulating pump is a high-efficiency energy-saving pump; the combined energy-saving system also comprises a monitoring unit which is used for monitoring the operating state of all the combined equipment in the combined energy-saving method of the industrial circulating water system, controlling the openness of a valve arranged on the pipeline and controlling the speed of the high-efficiency energy-saving pump.
Description
Technical field
The present invention relates to the power-saving technology of industrial circulating water system, particularly a kind of industrial circulating water combination energy-saving system and industrial circulating water system combination energy-saving method.
Background technology
Industrial circulating water system is a large amount of process systems that adopt in industrial enterprise, and its energy consumption often occupies more than 20% of commercial power, and the energy-conservation of system helps the energy-saving and emission-reduction of industrial enterprise and strengthen industrial competition.Because industrial circulating water system the time is difficult to accurately calculate the resistance of pipe network and the actual demand of production technology in design, cause in system design margin very large, according to the circulation that design is built up, can not under optimum operating mode, move.Simultaneously, along with the variation of production status, the variation of environment, the variation of equipment state, make industrial circulating water system often be in the variable parameter operation state, the regulating power of artificial manual adjustments and equipment itself is difficult to the competent needs that change, cause the operational efficiency of system often very low, energy consumption is larger.In order to reduce the energy resource consumption of industrial circulating water system, except from management takes measures to do to a certain extent energy-conservation, also be necessary to take technical measures to accomplish energy-conservation.
But, at present in industrial circulating water system technical energy saving field, usually only adopt efficient pump, or variable-frequency control technique, or a kind of power-saving technology in the hydrodynamic force cooling tower.Although industrial circulating water system has certain general character, accomplish as much as possible energy-conservation, must consider the characteristics of personality of each industrial circulating water system.Simple certain individual event power-saving technology of employing is not optimal selection, so that the industrial circulating water system of these technology of application of having can't be accomplished energy-conservation due to the demand that can not meet variation and environment, or though the system had has energy-saving effect but energy-conservation not thorough, more not lasting, still there is huge energy-saving potential.
Summary of the invention
The object of the present invention is to provide a kind of industrial circulating water combination energy-saving system and method, for solving industrial circulating water system, the industrial circulating water system that adopts the individual event power-saving technology to cause is not energy-conservation, energy-conservation not thorough, an energy-conservation unabiding difficult problem.
The present invention also provides a kind of industrial circulating water system combination energy-saving method, comprises the following steps:
Step 1: by the investigation of the component devices to industrial circulating water system, process requirements, equipment state and environmental condition, industrial circulating water system is carried out to Energy Efficiency Analysis, obtain the energy of the required consumption of each component devices;
Step 2: the energy of the energy of the required consumption of each component devices and the consumption of advanced cycles, economized water system each several part is compared, obtain the quantity of the many power consumptions of each component devices of this industrial circulating water system, i.e. the energy-saving potential of each component devices;
Step 3: according to the distribution of the energy-saving potential of each component devices, tentatively determine the device combination that needs to use energy-saving equipment in each component devices.
Step 4: the industrial circulating water system after the use energy-saving equipment is carried out to Energy Efficiency Analysis, obtain the energy of the required consumption of each component devices;
Step 5: carry out the energy-saving benefit assessment to using the industrial circulating water system after energy-saving equipment, and determine the equipment and technology combination of Optimization of Energy Saving according to energy-saving benefit assessment and investment decision principle, form industrial circulating water combination energy-saving system.
In some embodiment, by the circulating pump group in industrial circulating water system, line segments, heat exchanger, cooling tower, set up respectively and take flow and the pressure energy consumption Mathematical Modeling as variable, pipe-line layout, the heat exchange demand with water spot, the cooling requirement of backwater, advanced energy-conservation class Sihe or the parameter of simulation system equipment are applied in model, thereby can calculate the energy that described advanced cycles, economized water system each several part consumes.
In some embodiment, described Energy Efficiency Analysis refers to that by each component devices is set up to the energy consumption Mathematical Modeling, the expection running status in conjunction with this equipment in industrial circulating water system, simulate its energy consumption, calculates the energy of this equipment application post consumption.
In some embodiment, described energy-saving benefit assessment is to build up investment by calculating this energy-saving equipment, and the energy-saving effect of the rear generation that comes into operation, analyze the investment recovering state and the returns of investment that adopt after this energy-saving equipment, for determining that different energy-saving equipment technical combinations provide decision-making foundation.
The present invention also provides a kind of industrial circulating water combination energy-saving system, comprise the water cooling pond, circulating pump, heat exchanger and the cooling tower that by pipeline, are connected successively, it is characterized in that, described circulating pump is high efficiency energy saving pump, described industrial circulating water combination energy-saving system also comprises monitoring unit, described monitoring unit for the aperture of the valve that arranges on the running state monitoring of each component devices of industrial circulating water combination energy-saving system and pipeline control, the speed of high efficiency energy saving pump controls.
In some embodiment, on the pipeline of the porch of described high efficiency energy saving pump, be provided with suction line and entrance control valve, the industrial circulating water in described water cooling pond is inhaled in described high efficiency energy saving pump by described suction line and entrance control valve.
In some embodiment, on the pipeline in the exit of described high efficiency energy saving pump, be provided with check-valves and the first electric control valve, described the first motor-operated control valve is connected with described monitoring unit, described the first motor-operated control valve goalkeeper aperture signal is uploaded to described monitoring unit, and accepts the valve regulated instruction that described monitoring unit sends.
In some embodiment, described high efficiency energy saving pump is connected with a RHVC, is provided with motor in described high efficiency energy saving pump, and described RHVC is for regulating the rotating speed of described motor.
In some embodiment, described frequency conversion adjustment device for high is connected with described monitoring unit, and described monitoring unit is controlled the rotating speed of described motor indirectly by described frequency conversion adjustment device for high.
In some embodiment, on the pipeline in the exit of described heat exchanger, be provided with the second electric control valve, and described the second electric control valve is connected with described monitoring unit, described monitoring unit is accepted the signal of described the second electric control valve transmission.
In some embodiment, be provided with temperature sensor on described the second electric control valve, described temperature sensor is for the leaving water temperature of described heat exchanger is measured, and the temperature information that will measure is passed to monitoring unit.
The present invention, owing to adopting above technical scheme, makes it compared with prior art, has following advantage and good effect:
1) industrial circulating water combination energy-saving system provided by the invention and industrial circulating water system combination energy-saving method, be applicable to the energy-conservation demand of various industrial circulating water systems;
2) industrial circulating water combination energy-saving system provided by the invention and industrial circulating water system combination energy-saving method, be convenient to reasonably invest the maximization of accomplishing industrial circulating water system energy-conservation;
3) industrial circulating water combination energy-saving system provided by the invention and industrial circulating water system combination energy-saving method, can meet the various processes demand and can self adaptation regulate, and the normal operation that can keep equipment;
4) industrial circulating water combination energy-saving system provided by the invention and industrial circulating water system combination energy-saving method, make energy-conservation can maintenance for a long time of maximization of industrial circulating water system.
The accompanying drawing explanation
By reference to the accompanying drawings, by detailed description hereinafter, can more clearly understand above-mentioned and other feature and advantage of the present invention, wherein:
Fig. 1 is the structural design intention of industrial circulating water combination energy-saving system provided by the invention.
Symbol description:
The 1-water cooling pond
2-entrance control valve
The 3-high efficiency energy saving pump
The 4-check-valves
5-the first electric control valve
The 6-heat exchanger
7-the second electric control valve
The 8-main line
The 9-RHVC
The 10-monitoring unit
The 11-cooling tower
The specific embodiment
Referring to the accompanying drawing of the embodiment of the present invention, hereinafter the present invention will be described in more detail.Yet the present invention can be with many multi-form realizations, and should not be construed as the restriction of the embodiment be subjected in this proposition.On the contrary, it is abundant and complete open in order to reach proposing these embodiment, and makes those skilled in the art understand scope of the present invention fully.In these accompanying drawings, for clarity sake, may amplify size and the relative size in layer and zone.
In the general industry circulation, include the water cooling pond, circulating pump group, heat exchanger package, backwater hot-tub, the cooling tower that by pipeline, are connected successively, wherein in circulating pump, be provided with motor.
The invention provides a kind of industrial circulating water system combination energy-saving method, for solving industrial circulating water system, not energy-conservation, energy-conservation not thorough, the energy-conservation unabiding difficult problem of industrial circulating water system that adopts the individual event power-saving technology to cause specifically comprises the following steps:
Step 1: by the investigation of the component devices to industrial circulating water system, process requirements, equipment state and environmental condition, industrial circulating water system is carried out to Energy Efficiency Analysis, obtain the energy of the required consumption of each component devices;
Wherein, carry out Energy Efficiency Analysis and refer to that by each component devices is set up to the energy consumption Mathematical Modeling, the expection running status in conjunction with this equipment in industrial circulating water system, simulate its energy consumption, calculates the process of the energy of this equipment application post consumption.
Concrete, the investigation of industrial circulating water system formation, process requirements, equipment state and environmental condition is comprised to the pressure that obtains pumps design parameter, design parameters of cooling tower, system design parameters, the current output flow of system, multiple spot, related datas such as flow, Inlet and outlet water temperature, pump and blower fan of cooling tower running current, voltage, valve opening, environment temperature, humidity, pipe-line layout, system operation situation variation, watering technology rhythm with water spot.
Concrete, it is as follows that each component devices is set up the energy consumption Mathematical Modeling:
In circulating pump, the computing formula of motor power consumption is: √ 3UIcos φ (U: motor working voltage; I: motor operating current; Cos φ: motor power factor); Effective merit computing formula of circulating pump group output is ρ gQH(ρ: the density of water; G: acceleration of gravity; Q: pump group volume flow; H: pump group output lift); Thereby calculate the operational efficiency (percentage) of circulating pump group.According to the line segments pressure loss, the heat exchanger pressure loss, the cooling tower pressure loss, in conjunction with the effective merit formula of pump group, can obtain the energy consumption of line segments, heat exchanger, cooling tower, and the power consumption of blower fan of cooling tower motor, thereby the energy consumption that can obtain each component part accounts for the percentage of total energy consumption.
Step 2, compare the energy of the energy of the required consumption of each component devices and the consumption of advanced cycles, economized water system each several part, obtains the quantity of the many power consumptions of each component devices of this industrial circulating water system, i.e. the energy-saving potential of each component devices;
Wherein, by the circulating pump group in industrial circulating water system, line segments, heat exchanger, cooling tower, set up respectively and take flow and the pressure energy consumption Mathematical Modeling as variable, pipe-line layout, the heat exchange demand with water spot, the cooling requirement of backwater, advanced energy-conservation class Sihe or the parameter of simulation system equipment are applied in model, thereby can calculate the energy that advanced cycles, economized water system each several part consumes.
Step 3, according to the distribution of the energy-saving potential of each component devices, tentatively determine the device combination that needs to use energy-saving equipment in each component devices.
Concrete, distribution by the energy-saving potential identified, energy-saving equipment in conjunction with the combination energy-saving system, as high efficiency energy saving pump, high efficiency motor, arrangements for speed regulation, intelligent regulating valve, high-performance heat exchanger, hydrodynamic(al) or water power hybrid power cooling tower, monitoring unit, tentatively determine the combination of available two kinds and above energy-saving equipment.
Step 4, carry out Energy Efficiency Analysis to the industrial circulating water system after the use energy-saving equipment, obtains the energy of the required consumption of each component devices;
Wherein, in this step, the method refer step one of Energy Efficiency Analysis repeats no more herein.
Step 5: carry out the energy-saving benefit assessment to using the industrial circulating water system after energy-saving equipment, determine the equipment and technology combination of Optimization of Energy Saving according to energy-saving benefit assessment and investment decision principle, form industrial circulating water combination energy-saving system.
Wherein, the energy-saving benefit assessment is to build up investment by calculating this energy-saving equipment, and the energy-saving effect of the rear generation that comes into operation, analyze the investment recovering state and the returns of investment that adopt after this energy-saving equipment, for determining that different energy-saving equipment technical combinations provide decision-making foundation.
Concrete, by calculating the investment of building up of the preliminary optional energy-saving equipment of determining, and the annual amount of energy saving of the rear generation that comes into operation and the energy-conservation amount of money (product by amount of energy saving and electric unit price obtains), the reutilization technology economic analysis draws investment recovering state and the returns of investment after this energy-saving equipment of employing, by predetermined returns of investment index computing formula, obtain the returns of investment desired value, according to the investment decision principle, meet investment while requiring when this value again, namely thinking can this energy-saving equipment of investment construction, thereby determine the combination of Optimization of Energy Saving equipment and technology, form industrial circulating water combination energy-saving system.These equipment, by replacing existing equipment, if with high efficiency energy saving pump, replaced old circulating pump, are replaced old motor with high efficiency motor, or increase energy-saving equipment, if increased intelligent regulating valve, arrangements for speed regulation, enter into this industrial circulating water system, the performance energy-conserving action.Wherein investment decision principle can be set according to user's concrete condition, is not restricted herein.
The a certain industrial water circulation system of below take describes as concrete implementation column, specific as follows:
Through the Field Research test, find, the average output flow of an industrial circulating water system period is 1000m
3/ h, output pressure are 0.5Mpa, and pump group working voltage is 380V, and running current is 200A, and motor power factor is 0.85.The pressure loss on pipeline is about 0.15Mpa, and the pressure loss on three heat exchangers is total up to 0.25Mpa, and on end, the cooling tower pressure loss is about 0.1Mpa, and the blower fan of cooling tower working voltage is 380V, and running current is 60A, and motor power factor is 0.85.
Therefore, can calculate the power consumption of whole circulating pump group is:
√3*380*200*2*0.85/1000=223.8kW。
By the effective merit computing formula ρ gQH of water circulating pump group output, can calculate the effective merit of circulating pump group output again is:
1000*9.81*1000*52/3600/1000=141.7kW。
Wherein the density of water is 1000kg/m
3, acceleration of gravity is 9.81m/s
2, pressure is converted lift and is about 52m.The power that is also the consumption of circulating pump group is: 223.8-141.7=82.1kW.Efficiency corresponding to the circulating pump group is: 141.7/223.8=63%.
Same, the energy consumption that can obtain respectively pipeline, heat exchanger, cooling tower by effective merit computing formula ρ gQH is: 43.6kW, 73.6kW, 24.5kW.The power consumption that can be calculated cooling tower by motor power consumption formula √ 3UIcos φ is: √ 3*380*60*0.85/1000=33.6kW.
Thereby the consumed power of whole circulation is: 223.8+33.6=257.4kW;
Water pump consumed power accounting is: 82.1/257.4=32%;
Pipeline consumed power accounting is: 43.6/257.4=17%;
Heat exchanger consumed power accounting is: 73.6/257.4=28%;
Cooling tower consumed power accounting is: (24.5+33.6)/257.4=23%.
By with circulation advanced, energy-saving run, carrying out marking rear discovery, the operational efficiency of circulating pump group can reach 80%, 17% the fractional energy savings of namely having an appointment on circulating pump.The pipeline upward pressure of the energy-saving run loss 0.14Mpa that only has an appointment, 7% the energy-saving potential of namely having an appointment.In like manner can determine the energy-saving potential approximately 4% on heat exchanger, the energy-saving potential on cooling tower approximately 3%.Thereby the preliminary combination energy-saving system of determining the industrial circulating water system that can select high efficiency energy saving pump (containing high efficiency motor), arrangements for speed regulation, high-performance heat exchanger, water power combination cooling tower, five kinds of energy-saving equipments compositions of monitoring unit.
By preliminary determine, the operation energy consumption that join five kinds of energy-saving equipments in this circulation of energy consumption Mathematical Modeling simulation, the energy-saving potential that calculates these five kinds of energy-saving equipment reality is respectively: high efficiency energy saving pump is that to contain high efficiency motor be 1.5% to 13%(), arrangements for speed regulation are 6%, high-performance heat exchanger is 3.5%, water power combination cooling tower is 2%, and monitoring unit is 3%.And to build up these energy-saving equipments, the expense of building up by high efficiency motor is that 1 unit calculating (is elected the construction cost of reference as, built up the difference of expense in order to avoid different phase, only need multiply each other and get final product with the unit costs of converting and actual unit price while accurately calculating construction investment, as the water pump construction, need 3 units, water pump is actual builds up the actual unit price that expense is the 3* motor), need respectively to invest 3,1,2,4,2,2 unit costs.If predetermined investment tactics is: the energy-saving equipment that can invest is that the ratio of those energy-saving potentials and investment (is established it and is the earning rate index, this index can be also other financial index, it can artificially be changed with spatial variations in time, be not what fix, just for doing the energy-saving investment decision service) surpass 2% equipment.By calculating, find: the high efficiency energy saving pump earning rate is 4.3%, and the high efficiency motor earning rate is 1.5%, and the arrangements for speed regulation earning rate is 3%, and high-performance heat exchanger is 0.9%, and water power combination cooling tower is 1%, and monitoring unit is 1.5%.Because arrangements for speed regulation need to be controlled according to the actual motion state, therefore also need to increase monitoring unit, thereby can determine the system of final combination energy-saving system for being formed by high efficiency energy saving pump, arrangements for speed regulation and monitoring unit.
According to said method, the present invention also provides a kind of industrial circulating water combination energy-saving system, with reference to shown in Figure 1, this industrial circulating water combination energy-saving system comprises water cooling pond 1, circulating pump group, heat exchanger package and cooling tower 11, between water cooling pond 1, circulating pump group, heat exchanger package and cooling tower 11, by pipeline 8, be connected successively, realize water circulation.
Wherein, the circulating pump group comprises the high efficiency energy saving pump 3 of three parallel connections in the present embodiment, and high efficiency energy saving pump 3 plays energy-conservation effect.This industrial circulating water combination energy-saving system also comprises monitoring unit 10, monitoring unit 10 for the aperture of the valve that arranges on the running state monitoring of this each component devices of industrial circulating water combination energy-saving system and pipeline control, the speed of high efficiency energy saving pump controls.
In the present embodiment, deposited industrial circulating water in water cooling pond 1, on the pipeline of the porch of high efficiency energy saving pump 3, be provided with suction line and entrance control valve 2, the industrial circulating water in water cooling pond 1 is inhaled in high efficiency energy saving pump 3 by suction line and entrance control valve 2.On the pipeline in the exit of high efficiency energy saving pump 3, be provided with check-valves 4 and the first electric control valve 5, check-valves 4 damages high efficiency energy saving pump 3 be used to preventing the industrial cycle aqueous reflux; The first electric control valve 5 is connected with monitoring unit 10, and the first electric control valve 5 is uploaded to monitoring unit 10 by the aperture signal, and accepts the valve regulated instruction that monitoring unit 10 sends.
In the present embodiment, be provided with motor in high efficiency energy saving pump 3, and high efficiency energy saving pump 3 is connected with a RHVC 9, RHVC 9 is be used to regulating the rotating speed of motor.RHVC 9 is connected with monitoring unit 10, when 10 pairs of high efficiency energy saving pumps 3 of monitoring unit are monitored, also RHVC 9 is sent to control instruction, passes to high efficiency energy saving pump by RHVC 9, thereby controls the rotating speed of high efficiency energy saving pump.
In the present embodiment, heat exchanger package comprises the heat exchanger 6 of three parallel connections, and is arranged on pipeline and needs cooling equipment place, and the industrial circulating water after the heat exchanger heat exchange is directly gone up cooling tower 11.Wherein, on the pipeline in the exit of heat exchanger 6, be provided with the second electric control valve 7, and the second electric control valve 7 is connected with monitoring unit 10; On the second electric control valve 7, be provided with temperature sensor, temperature sensor is measured for the leaving water temperature of heat exchanger 6, and the temperature information that will measure is passed to monitoring unit 10; Monitoring unit 10 receives second electric control valve 7 place's leaving water temperature information, and by this temperature information preserve, analyzing and processing.
The running of this industrial circulating water system is as follows:
Industrial circulating water is inhaled in high efficiency energy saving pump 3 by suction line and entrance control valve 2 in water cooling pond 1, under the control of RHVC 9, motor drives high efficiency energy saving pump 3, after recirculated water is boosted by high efficiency energy saving pump 3 through pump discharge check-valves 4 with the first electric control valve 5 is laggard enters main line 8; A set of heat-exchanger rig 6 that industrial circulating water is flowed through and arranged at the cooling equipment place of needs on main line 8, the recirculated water after heat exchange is directly gone up cooling tower, carries out cooling; Cooled recirculated water is got back to again in water cooling pond 1, thereby has formed whole industrial circulating water system.
Monitoring unit 10 receives second electric control valve 7 place's leaving water temperature information, and this temperature information is analyzed.If the process requirements of understanding must not surpass 33 ℃ for the leaving water temperature of this industrial circulating water system, when leaving water temperature only has 25 ℃, and the site environment temperature is when also low, illustrate that pushing quantity has necessarily to have more than needed, and can reduce certain water yield and accomplish energy-conservation.Monitoring unit 10 sends control instruction by analysis to RHVC 9, passes to high efficiency energy saving pump 3 by RHVC 9, thereby reduces the rotating speed of high efficiency energy saving pump 3, reduces its energy consumption, thereby accomplishes the energy-saving run of whole circulation.After operation by a period of time, after monitoring unit 10 has been collected abundant service data, just can accomplish according to the process requirements changed, automatically determine that the combination energy-saving system can maximize the adjustment parameter of energy-saving run, more just can accomplish that by regulating the lasting maximization of industrial circulating water system is energy-conservation.This system can be accomplished further energy-conservation by continuous close-loop automatic adjustment.
Industrial circulating water combination energy-saving system provided by the invention, introduce monitoring unit and realize energy-saving effect by automatic adjusting and/or Self Adaptive Control, guarantees that industrial circulating water system is in the long-term power save mode that continues to maximize.Wherein, automatically regulating is according to the changes in demand of main production technology to this industrial circulating water system, the parameter changed by Real-time Collection, adjust in time the running frequency of high efficiency energy saving pump, the aperture of intelligent regulating valve, with the demand that meets this kind variation and guarantee that this system is in normally, energy-saving run.Self Adaptive Control is by analyzing the parameter of Real-time Collection, the demand of forecast analysis production technology and the power consumption state of whole system, determine and maximize energy-conservation control parameter: the running frequency of high efficiency energy saving pump, the aperture of intelligent regulating valve, by adjusting, accomplish when meeting the production technology demand, system is in the maximization power save mode, thereby realizes that the long-term lasting maximization of this system is energy-conservation.
In sum, the invention provides a kind of industrial circulating water system combination energy-saving method, at first by abundant investigation industrial circulating water system formation, process requirements, equipment state and environmental condition, set up the energy consumption model of this system, evaluate the energy that each part consumes; By with class Sihe or simulation system advanced, energy-saving run, comparing, find out the quantity of the many power consumptions of each component parts of this industrial circulating water system; Preliminary definite available energy-saving; Simulate again the expection running status of those equipment in this circulation, simulate its energy consumption, calculate the energy-saving effect of obtaining after this equipment application; Calculate simultaneously the investment of building up of this energy-saving equipment, analyze the investment recovering state and the returns of investment that adopt after this kind energy-saving equipment; According to the investment decision principle, determine again the equipment and technology combination of Optimization of Energy Saving, form industrial circulating water combination energy-saving system.The present invention also provides a kind of industrial circulating water combination energy-saving system, comprises the water cooling pond, circulating pump, heat exchanger and the cooling tower that by pipeline, are connected successively, and circulating pump is high efficiency energy saving pump; This system also comprises monitoring unit, for the aperture of the valve that arranges on the running state monitoring of this each component devices of industrial circulating water combination energy-saving system and pipeline control, the speed of high efficiency energy saving pump controls.
Those skilled in the art should be understood that the present invention can not break away from the spirit or scope of the present invention with many other concrete forms realizations.Although described embodiments of the invention, the present invention should be understood and these embodiment should be restricted to, within the spirit and scope of the invention that those skilled in the art can define as appended claims, make and change and revise.
Claims (11)
1. an industrial circulating water system combination energy-saving method, is characterized in that, comprises the following steps:
Step 1: by the investigation of the component devices to industrial circulating water system, process requirements, equipment state and environmental condition, industrial circulating water system is carried out to Energy Efficiency Analysis, obtain the energy of the required consumption of each component devices;
Step 2: the energy of the energy of the required consumption of each component devices and the consumption of advanced cycles, economized water system each several part is compared, obtain the quantity of the many power consumptions of each component devices of this industrial circulating water system, i.e. the energy-saving potential of each component devices;
Step 3: according to the distribution of the energy-saving potential of each component devices, tentatively determine the device combination that needs to use energy-saving equipment in each component devices;
Step 4: the industrial circulating water system after the use energy-saving equipment is carried out to Energy Efficiency Analysis, obtain the energy of the required consumption of each component devices;
Step 5: carry out the energy-saving benefit assessment to using the industrial circulating water system after energy-saving equipment, and determine the equipment and technology combination of Optimization of Energy Saving according to energy-saving benefit assessment and investment decision principle, form industrial circulating water combination energy-saving system.
2. industrial circulating water system combination energy-saving method as claimed in claim 1, it is characterized in that, by the circulating pump group in industrial circulating water system, line segments, heat exchanger, cooling tower, set up respectively and take flow and the pressure energy consumption Mathematical Modeling as variable, pipe-line layout, the heat exchange demand with water spot, the cooling requirement of backwater, advanced energy-conservation class Sihe or the parameter of simulation system equipment are applied in model, thereby can calculate the energy that described advanced cycles, economized water system each several part consumes.
3. industrial circulating water system combination energy-saving method as claimed in claim 1 or 2, it is characterized in that, described Energy Efficiency Analysis refers to by each component devices is set up to the energy consumption Mathematical Modeling, expection running status in conjunction with this equipment in industrial circulating water system, simulate its energy consumption, calculate the energy of this equipment application post consumption.
4. industrial circulating water system combination energy-saving method as claimed in claim 2 or claim 3, it is characterized in that, described energy-saving benefit assessment is to build up investment by calculating this energy-saving equipment, and the energy-saving effect of the rear generation that comes into operation, analyze the investment recovering state and the returns of investment that adopt after this energy-saving equipment, for determining that different energy-saving equipment technical combinations provide decision-making foundation.
5. industrial circulating water combination energy-saving system, comprise the water cooling pond, circulating pump, heat exchanger and the cooling tower that by pipeline, are connected successively, it is characterized in that, described circulating pump is high efficiency energy saving pump, described industrial circulating water combination energy-saving system also comprises monitoring unit, described monitoring unit for the aperture of the valve that arranges on the running state monitoring of each component devices of industrial circulating water combination energy-saving system and pipeline control, the speed of high efficiency energy saving pump controls.
6. industrial circulating water combination energy-saving system as claimed in claim 5, it is characterized in that, on the pipeline of the porch of described high efficiency energy saving pump, be provided with suction line and entrance control valve, the industrial circulating water in described water cooling pond is inhaled in described high efficiency energy saving pump by described suction line and entrance control valve.
7. industrial circulating water combination energy-saving system as claimed in claim 6, it is characterized in that, on the pipeline in the exit of described high efficiency energy saving pump, be provided with check-valves and the first electric control valve, described the first motor-operated control valve is connected with described monitoring unit, described the first motor-operated control valve goalkeeper aperture signal is uploaded to described monitoring unit, and accepts the valve regulated instruction that described monitoring unit sends.
8. industrial circulating water combination energy-saving system as claimed in claim 7, is characterized in that, described high efficiency energy saving pump is connected with a RHVC, is provided with motor in described high efficiency energy saving pump, and described RHVC is for regulating the rotating speed of described motor.
9. industrial circulating water combination energy-saving system as claimed in claim 8, is characterized in that, described frequency conversion adjustment device for high is connected with described monitoring unit, and described monitoring unit is controlled the rotating speed of described motor indirectly by described frequency conversion adjustment device for high.
10. industrial circulating water combination energy-saving system as claimed in claim 9, it is characterized in that, on the pipeline in the exit of described heat exchanger, be provided with the second electric control valve, and described the second electric control valve is connected with described monitoring unit, described monitoring unit is accepted the signal of described the second electric control valve transmission.
11. industrial circulating water combination energy-saving system as claimed in claim 10, it is characterized in that, on described the second electric control valve, be provided with temperature sensor, described temperature sensor is for the leaving water temperature of described heat exchanger is measured, and the temperature information that will measure is passed to described monitoring unit.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104317281A (en) * | 2014-11-17 | 2015-01-28 | 广西远望科技有限责任公司 | Energy-saving and water-saving device for distributed control over industrial circulating water and control method thereof |
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| CN105649136A (en) * | 2016-03-17 | 2016-06-08 | 金田集团（桐城）塑业有限公司 | Intelligent energy-saving water supply device applied to BOPP production line |
| CN105841408A (en) * | 2016-05-19 | 2016-08-10 | 中国能源建设集团广东省电力设计研究院有限公司 | Closed-cycle cooling water energy-saving driving system and method |
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| CN112327613A (en) * | 2020-09-09 | 2021-02-05 | 中石化宁波工程有限公司 | Optimization method of industrial circulating water energy-saving system and industrial circulating water energy-saving system applying same |
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| CN105043804A (en) * | 2015-08-25 | 2015-11-11 | 上海宝钢节能环保技术有限公司 | Industrial circulating water system combination energy saving experiment system |
| CN105043804B (en) * | 2015-08-25 | 2018-01-02 | 上海宝钢节能环保技术有限公司 | Industrial circulating water system combination energy-saving experimental system |
| CN105115352A (en) * | 2015-09-29 | 2015-12-02 | 江苏永盛传热科技有限公司 | Tube-shell type heat exchange unit |
| CN105649136A (en) * | 2016-03-17 | 2016-06-08 | 金田集团（桐城）塑业有限公司 | Intelligent energy-saving water supply device applied to BOPP production line |
| CN105841408A (en) * | 2016-05-19 | 2016-08-10 | 中国能源建设集团广东省电力设计研究院有限公司 | Closed-cycle cooling water energy-saving driving system and method |
| CN106196799A (en) * | 2016-08-25 | 2016-12-07 | 浙江夏王纸业有限公司 | One utilizes public water delivery low-temperature receiver amount to replace production body paper thermal device |
| CN109174889A (en) * | 2018-08-28 | 2019-01-11 | 上海宝钢节能环保技术有限公司 | Industrial dedusting blower fan system combination energy-saving method and industrial dedusting blower combine energy conserving system |
| CN110298470A (en) * | 2018-12-07 | 2019-10-01 | 西安诺普电气工程技术有限公司 | On demand to the integrated recirculated water power-saving technology of energy |
| CN110145919A (en) * | 2019-06-20 | 2019-08-20 | 上海宝钢节能环保技术有限公司 | A kind of power-economizing method of recirculating cooling water system |
| CN112327613A (en) * | 2020-09-09 | 2021-02-05 | 中石化宁波工程有限公司 | Optimization method of industrial circulating water energy-saving system and industrial circulating water energy-saving system applying same |
| CN112327613B (en) * | 2020-09-09 | 2022-03-22 | 中石化宁波工程有限公司 | Optimization method of industrial circulating water energy-saving system and industrial circulating water energy-saving system applying same |
| CN113863422A (en) * | 2021-08-04 | 2021-12-31 | 成都威克瑞节能技术有限公司 | Efficient and energy-saving system for fluid conveying |
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Address after: 201999 Baoshan District, G Road, Lane No. 550, No. 7, business building, floor 2, level 3, level Patentee after: SHANGHAI BAOSTEEL ENERGY-SAVING ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: 201999, room 1813, 3245 Mudanjiang Road, Shanghai, Baoshan District Patentee before: Shanghai Baosteel Energy Tech Co., Ltd. |