CN201763589U - High-efficiency dynamic correcting and energy-saving system for working condition point of fluid circulating pump - Google Patents
High-efficiency dynamic correcting and energy-saving system for working condition point of fluid circulating pump Download PDFInfo
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- CN201763589U CN201763589U CN2010201682630U CN201020168263U CN201763589U CN 201763589 U CN201763589 U CN 201763589U CN 2010201682630 U CN2010201682630 U CN 2010201682630U CN 201020168263 U CN201020168263 U CN 201020168263U CN 201763589 U CN201763589 U CN 201763589U
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Abstract
The utility model discloses a high-efficiency dynamic correcting and energy-saving system for a working condition point of a fluid circulating pump, which particularly aims at energy-saving transformation of a cooling water circulating system and a large-sized central air-conditioning circulating water system in industrial and mining enterprises. The high-efficiency dynamic correcting and energy-saving system comprises a detecting device, a calculating device, a comparative analysis device and an alternative pump set, wherein the detecting device is used for measuring flow rate and pressure of fluids entering and going out of nodes, the calculating device is used for processing detecting results, the detecting device is sequentially connected with the calculating device and the comparative analysis device, and the alternative pump set is matched with parameters of the comparative analysis device. The high-efficiency dynamic correcting and energy-saving system has the following benefits: the actual working conditions of a pump in on-line circulating fluid can be tested and then compared with the demanded load quantity, so as to select the proper alternative pump and install the alternative pump in a circulating system. The method of pump selection according to working conditions greatly reduces the problem of energy consumption waste of the fluid circulating pump.
Description
Technical field
The utility model relates to a kind of circulation of fluid energy-saving pump correction system, relates in particular to a kind of circulation of fluid operating point high-efficiency dynamic and corrects energy conserving system.Be mainly used in the fluid circulating system technical field.
Background technique
At present, recycle pump is widely used in the central air-conditioning system such as FLUID TRANSPORTATION, apparatus cools and hotel, market of industrial and mining enterprise.
The major parameter of pump selection is power, flow, lift etc., and the type selecting work of pump designs according to maximum load, the poorest operating mode usually generally in the design phase of work system, and also leaves the redundancy of 10-20% on this basis.But in actual use, system does not often reach maximum load to the capacity demand of pump, in addition fully loaded half less than, also seldom in the poorest operating mode work.Also can stable operation when though such system design has guaranteed that even system faces big load, but caused a large amount of energy consumption wastes.
The major parameter that influences energy consumption is the power of pump motor, its type selecting mainly is that the flow and the lift that are calculated during according to system design are determined, and different circulation lift of pump that the Designer calculated and flow have very big difference, the general pump motor power that all exists is much higher than the actual required power of system, formed system's operation the operating point substantial deviation operating point of pipeline reality, caused the increase of system operation cost.Therefore, be necessary effectively to calculate at the pepeline characteristic of this system, pipeline is carried out rational technical innovation, select suitable energy-efficient water pump for use, make the lift of water pump and flow consistent with the lift and the flow of system actual demand, thereby make pump working in maximum efficiency areas, reach the power that reduces system motor, reduce the energy-conservation purpose of system's operation energy consumption.
Be that example illustrates below with the central air-conditioning system.Central air-conditioner is widely used in the large-scale building in city, when it regulates room temperature, also is the main energy sources consumption systems in the building.The working principle of central air-conditioner is a refrigerator to refrigerant a kind ofly putting of compressing, expand, endothermic process.System uses water as media usually, with heat delivery each air conditioner end equipment to building, utilizes blower fan air-supply by heat exchange then, and heat delivery is to building space the most at last, to freezing or heat in this space.The energy consumption of central air-conditioning system mainly comprises, refrigerator Driven Compressor or add the energy consumption of heat medium, the energy consumption that the air conditioner water pumps water overcomes resistance to water-flow, the energy consumption that air-conditioning draught fan overcomes gas-flow resistance.
It is cold carrying agent that the fed sheet of a media of central air conditioning water system makes water usually, and freon is refrigeration agent.Mainly form by outdoor main frame, pipe-line system, indoor end (wind dish), control switch etc.It mainly produces cold ﹠ heat source by the heat exchange of outdoor main frame, ducted hot water or cold water is transported to each end equipment of the interior space by water-aspirator pressure, hot and cold water carries out exchange heat by fin in the wind dish and indoor air, produce hot and cold wind, thereby the whole interior space is carried out temperature regulation.
In the construction project, the conventional design of central air conditioning water system and selection water pump are by the most unfavorable processing condition design and coupling, but the actual motion of central air-conditioning system is to adopt one or more air conditioner combined running by the burden requirement that changes; Simultaneously, when the design dosage, the air-conditioning unit has the surplus capacity of 10-30% again, this must be in big flow, poor efficiency, the operation down of high power consumption state with regard to making the water pump of selecting with the most unfavorable processing condition design, cause operation water pump and system performance not to match, wasted the power consumption of water pump to a great extent.
In view of the water pump of central air-conditioning system has big surplus capacity, people come energy-conservation by control startup-shutdown time and main frame temperature.Though being arranged at present, the pump variable frequency of employing adjusting method comes energy efficient, but its power saving rate is at 0-30%, and the water pump actual operating efficiency is at 40-60%, the power consumption 3-5% of frequency variator own, in addition, when pump rotary speed reduced, its efficient also will reduce by the likelihood relation, therefore adopt single energy-saving and frequency-variable scheme, system consumes energy still than higher.
Existing technical problem is: need the power demand of a kind of and online fluid circulating system actual load pump group that is complementary, can be according to the power needs of reality, for disposing each parameter, online fluid circulating system all needs close pump with actual motion, make things convenient for the different operating place, the selection of different operating mode pumps and adaptive.
Summary of the invention
The purpose of this utility model provides a kind of circulation of fluid recycle pump operating point high-efficiency dynamic and corrects energy conserving system.Can monitor the actual motion state of each time point pump, and provide the parameter of pump, improve the power consumption waste problem of pump.
For solving the problems of the technologies described above, the technical solution of the utility model is to realize like this, a kind of fluid circulation pump operating point high-efficiency dynamic is corrected energy conserving system, it is characterized in that: comprise measurement into and out of the detection device of flow, pressure and the power of node fluid, be used for to testing result handle arithmetic unit that computing draws actual loading, to relative analytic apparatus and alternative pump group that operation result and original parameter compare, described detection device links to each other with arithmetic unit, relative analytic apparatus successively; Described alternative pump group matches with each parameter behind the relative analytic apparatus.
Described detection device comprises the flow instrument of measuring flow, the pressure gauge of measuring pressure and the power measuring of measurement power.
Described alternative pump group be by the design of the typical condition of particular job occasion one group by little to big pump series.
The impeller of described alternative pump group is made of the high-quality stainless steel, the diameter D of impeller
2, impeller inlet diameter D
1, impeller exit width b
2And the outlet laying angle β of blade, draw through after the accurate data computation analysis; Described impeller diameter D
2Be 270-980mm, the inlet diameter D of impeller
1Be 143-780mm, the exit width b of impeller
2Be 63-250mm, the outlet laying angle β of blade is that 63 degree are to 85 degree.
The seamless steel pipe of the pump line of described alternative pump group for being made of the 45# steel, this pump line is by the high hardness wear-resisting internal layer and keep the pump line skin of original hardness to constitute.
Also be provided with the rubber outer protection cover on the pump line outer wall of described alternative pump group.
The beneficial effects of the utility model: the utility model circulation of fluid energy-saving pump operating point high-efficiency dynamic correction system, can be by the actual conditions of pump in the online circulation of fluid of test, compare with the load demand, select suitable alternative pump, in the circulatory system of packing into.This energy consumption of selecting the method for pump to greatly reduce the circulation of fluid pump according to operating mode is wasted problem.
In addition, select the impeller of high-quality stainless steel material for use, can reduce the friction factor of impeller and current, thereby improve the transporting velocity of liquid, reduced conveying energy consumption, thus further energy saving.
In addition, improve the hardness of pump line inwall, can reduce the friction factor of inwall, thereby improve the transporting velocity of liquid, reduced conveying energy consumption, thus further energy saving.
Description of drawings
Fig. 1 is the utility model embodiment's a chilled water circulatory system schematic representation.
Fig. 2 is pump characteristic and characteristic curve of pipeline figure.
Fig. 3 is the utility model flow chart.
Fig. 4 is the structural representation of the utility model impeller.
Fig. 5 is the sectional view of the utility model impeller.
Fig. 6 is the structural representation of the utility model pump line.
Embodiment
Below in conjunction with drawings and Examples, the utility model is elaborated:
Fig. 1 is the utility model embodiment's a chilled water circulatory system schematic representation, and 6 is cooling waterpump, and 7 is chilled water pump, and 8 is condenser, and 9 is vaporizer, and 10 is cooling tower, and 11 is water knockout drum, and 12 is water-collecting machine.
The utility model circulation of fluid energy-saving pump operating point high-efficiency dynamic correction system, comprise measurement into and out of the detection device 1 of flow, pressure and the power of node fluid, the arithmetic unit 2 that is used for testing result is handled, to relative analytic apparatus 3 and alternative pump group that operation result and original parameter compare, described detection device 1 links to each other with arithmetic unit 2, relative analytic apparatus 3 successively; Described alternative pump group matches with each parameter of relative analytic apparatus.
Above-mentioned detection device 1 comprises the flow instrument of measuring flow and the pressure gauge of measuring pressure.Professional tools such as utilization flow instrument and pressure gauge are surveyed inhaling setting-out pipe-line system and water pump.Described arithmetic unit 2 is the constant flow filament energy equations of utilization, and promptly bernoulli's equation calculates the moving lift of pipeline reality, i.e. pipeline loss of total pressure, and calculate the actual power of water pump.Analyze the data of comparison system actual measurement and the data of calculating, correct original system unreasonable design part, repaint new characteristic curve of pipeline, calculate the optimal working point that makes new advances.The energy-efficient water pump of selecting to make to measure according to new optimal working point, be complementary with system.
Above-mentioned alternative pump group be by the design of the typical condition of particular job occasion one group by little to big pump, select as required.
The utilization flow instrument is measured the actual flow of system, and compares with design discharge.The utilization power measuring is accurately measured the actual power of cooling waterpump.Read condenser pressure parameter L N1 with pressure gauge, the pressure parameter LQ1 of LN2 and cooling waterpump, LQ2, according to bernoulli's equation:
H＝HST+SQ
2
Draw out pipe resistance characteristic curve R1 shown in Figure 2, and raw water pump performance chart (Q-H) 1, can see among the figure that this pipe resistance characteristic curve R1 has departed from former design pipe resistance characteristic curve R2, operating point also has been displaced to the A point from intrinsic B point, the flow of water pump also has been displaced to Q1 from Q2, greater than setting value, be operated in low efficiency region, energy consumption reduces greatly.
If the flow of water pump is remedied to former setting value Q2, in Fig. 2, will find the operating point C of respective tube resistance characteristic curve R1, lift is H3, the lift after dynamically correcting has obviously reduced Δ H.
According to new optimum condition C corresponding flow and lift, just can select the energy-efficient water pump of making to measure for use, compare with raw water pump, satisfying under the prerequisite of requirement of system design, the power of energy-efficient water pump will decline to a great extent, the energy consumption of illustrative system after dynamically correcting will significantly reduce, and energy-saving effect is good.
The impeller of above-mentioned alternative pump group is made of the high-quality stainless steel, the diameter D of impeller
2, impeller inlet diameter D
1, impeller exit width b
2And the outlet laying angle β of blade, draw through after the accurate data computation analysis; Described impeller diameter D
2Be 270-980mm, the inlet diameter D of impeller
1Be 143-780mm, the exit width b of impeller
2Be 63-250mm, the outlet laying angle β of blade is that 63 degree are to 85 degree.Referring to Fig. 4 and shown in Figure 5.
In addition, select the impeller of high-quality stainless steel material for use, can reduce the friction factor of impeller and current, thereby improve the transporting velocity of liquid, reduced conveying energy consumption, thus further energy saving.
The seamless steel pipe of the pump line of above-mentioned alternative pump group for constituting by the 45# steel, this pump line is by the high hardness wear-resisting internal layer and keep the pump line skin of original hardness to constitute; Referring to shown in Figure 6.Also be provided with the rubber outer protection cover on the pump line outer wall of described alternative pump group.Thereby reduce the energy loss of carrying, possessed the high tenacity and the high antitorque mechanical property in the wrong of original pump line simultaneously again.
The utility model protection domain is not limited to above-mentioned mode of execution; no matter any variation is being done by system aspect its assembly; in every circulation; utilize the working condition of measuring tool monitoring pump; and go out rational operating point according to the calculation of parameter that records; and select the pump of design in advance for use according to result of calculation, this type systematic all falls within the protection domain of the present utility model.
Claims (6)
1. a fluid circulation pump operating point high-efficiency dynamic is corrected energy conserving system, it is characterized in that: comprise measurement into and out of the detection device (1) of flow, pressure and the power of node fluid, be used for to testing result handle arithmetic unit (2) that computing draws actual loading, to relative analytic apparatus (3) and alternative pump group that operation result and original parameter compare, described detection device (1) links to each other with arithmetic unit (2), relative analytic apparatus (3) successively; Described alternative pump group matches with each parameter behind the relative analytic apparatus.
2. a kind of fluid circulation pump operating point high-efficiency dynamic according to claim 1 is corrected energy conserving system, it is characterized in that: described detection device (1) comprises the flow instrument of measuring flow, the pressure gauge of measuring pressure and the power measuring of measurement power.
3. a kind of circulation of fluid pump operating point high-efficiency dynamic according to claim 1 is corrected energy conserving system, it is characterized in that: described alternative pump group is to be made of little extremely big pump series by one group.
4. correct energy conserving system according to any described a kind of circulation of fluid pump operating point high-efficiency dynamic in the claim 1 to 3, it is characterized in that: the impeller of described alternative pump group is made of the high-quality stainless steel, the diameter D of impeller
2, impeller inlet diameter D
1, impeller exit width b
2And the outlet laying angle β of blade, described impeller diameter D
2Be 270-980mm, the inlet diameter D of impeller
1Be 143-780mm, the exit width b of impeller
2Be 63-250mm, the outlet laying angle β of blade is that 63 degree are to 85 degree.
5. correct energy conserving system according to any described a kind of circulation of fluid pump operating point high-efficiency dynamic in the claim 1 to 3, it is characterized in that: the seamless steel pipe of the pump line of described alternative pump group for being made of the 45# steel, this pump line (5) is made of pump line skin (52) and high hardness wear-resisting internal layer (51).
6. a kind of circulation of fluid pump operating point high-efficiency dynamic according to claim 5 is corrected energy conserving system, it is characterized in that: also be provided with rubber outer protection cover (53) on the pump line of described alternative pump group (5) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201682630U CN201763589U (en) | 2010-04-21 | 2010-04-21 | High-efficiency dynamic correcting and energy-saving system for working condition point of fluid circulating pump |
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|---|---|---|---|
| CN2010201682630U CN201763589U (en) | 2010-04-21 | 2010-04-21 | High-efficiency dynamic correcting and energy-saving system for working condition point of fluid circulating pump |
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| CN201763589U true CN201763589U (en) | 2011-03-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267013A (en) * | 2013-05-27 | 2013-08-28 | 长沙理工大学 | Variable flow water system energy-saving method based on combination of large pump and small pump |
| CN104265616A (en) * | 2014-09-19 | 2015-01-07 | 国家电网公司 | Running state online monitoring and estimation system for cold water main circulating pump inside converter valve |
| CN112687920A (en) * | 2020-12-29 | 2021-04-20 | 浙江高成绿能科技有限公司 | Device for simulating circulating pump capacity in fuel cell system |
-
2010
- 2010-04-21 CN CN2010201682630U patent/CN201763589U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267013A (en) * | 2013-05-27 | 2013-08-28 | 长沙理工大学 | Variable flow water system energy-saving method based on combination of large pump and small pump |
| CN103267013B (en) * | 2013-05-27 | 2016-02-03 | 长沙理工大学 | A kind of variable water volume system power-economizing method based on the associating of size pump |
| CN104265616A (en) * | 2014-09-19 | 2015-01-07 | 国家电网公司 | Running state online monitoring and estimation system for cold water main circulating pump inside converter valve |
| CN104265616B (en) * | 2014-09-19 | 2016-08-17 | 国家电网公司 | Converter valve inner cold water main circulation pump running status on-line monitoring and assessment system |
| CN112687920A (en) * | 2020-12-29 | 2021-04-20 | 浙江高成绿能科技有限公司 | Device for simulating circulating pump capacity in fuel cell system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20160421 |