CN104819504A - Hydraulic balance flow adjusting method based on data remote transmission system - Google Patents
Hydraulic balance flow adjusting method based on data remote transmission system Download PDFInfo
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Abstract
The invention relates to a hydraulic balance flow adjusting method based on a data remote transmission system. The system mainly comprises a heat exchange station and a terminal heat user, wherein the heat exchange station and a plurality of parallel branched loops which are supplied with heat by the terminal heat user are subjected to heat exchange on a heat exchanger; a main pipeline loop is provided with an adjustable balance valve and a building calorimeter; each parallel branched loop is provided with an adjustable balance valve or a control valve. The adjusting method comprises the following steps: (1) opening all the valves based on the data remote transmission system; (2) determining a most disadvantaged tail end loop; and (3) adjusting the valve opening degree of each parallel loop to control the flow. By the aid of the adjusting method, the heat source flow can be reasonably controlled, the wastes of a heat source are prevented, the power consumption amount of a water pump is reduced, the adjusting method is rapid and accurate, the cost is low and the practical value is very high; the manpower cost is effectively reduced and the working efficiency is improved.
Description
Technical field
The present invention relates to a kind of hydraulic equilibrium Flow-rate adjustment method based on data remote transmission system, belong to Heating, Ventilation and Air Conditioning (HVAC) Technology field.
Background technology
Along with sustain economic is fast-developing, AND ENERGY RESOURCES CONSUMPTION IN CHINA amount is in the trend increased fast year by year, according to statistics, the building energy consumption of China accounts for 30% of the total energy consumption of the whole society, 2 ~ 3 times are exceeded than close developed country, supplying thermal energy consumption to be again largest portion in China's building energy consumption, is also waste and energy-conservation Main way.Hydraulic misadjustment is the ubiquitous phenomenon of heating network, how to overcome hydraulic misadjustment, realizes the hydraulic equilibrium of heating network, improves heating quality, is heating industry institute problems faced.Heating system hydraulic misadjustment essence is exactly that each thermal substation of heating network (or heat user) is in operation actual flow and the inconsistent phenomenon of regulation flow.In central heating system, if flow does not reach balance, some bypass flow are excessive, and some bypass flow are too small, then can cause the phenomenon that heating area is uneven in temperature, directly affect heating effect, cause the complaint of user.Meanwhile, excessive flow also can cause damage by heat exchanging station equipment, too small flow, in the hot water pipeline of heating, easily causes exhaust problem and results in blockage.Along with the expansion of urban construction scale and being on the increase of heat user, the Chinese government has more and more paid attention to optimization planning and the retrofit work of heating network.Carry out the waterpower dynamic balance optimizing research of district heat supply network, not only investment reduction is had great significance, and be that to realize heat supply safe and reliable, improve the important step of heat supply level.
At present in hydraulic equilibrium solution, have certain effect, but in the process of analysis and solve, debug time is very long, and step is numerous and diverse, debug results is also barely satisfactory undesirable.So a kind of quick adjustment method accurately becomes active demand.
Summary of the invention
Object of the present invention mainly for hydraulic equilibrium imbalance present situation, proposes a kind of flow rate adjusting method of more efficient and accuracy.
To achieve these goals, technical scheme of the present invention is as follows.
A kind of hydraulic equilibrium Flow-rate adjustment method based on data remote transmission system, system mainly comprises heat exchange station and terminal heat user, heat exchange station and many parallel connection each branch loops through the heat supply of terminal heat user complete heat exchange at heat exchanger, supervisor's loop there is an adjustable and balancing Fa He building calorimeter, each each branch in parallel loop has adjustable and balancing valve or control valve.This control method comprises the following steps:
(1) based on data remote transmission control system, all valves are opened: be all opened to maximum by the valve opening at each the loop pipeline place of branch arranged in heating system, according to the area of heat-supply service of heat exchange station, calculate the design discharge of heat exchange station heating demands; According to the heating area of shunt terminal user each branch loop, calculate the design discharge of each cell branch loop.
(2) determine least favorable end loop: read the flow in each loop of shunt terminal user, the loop that flow imbalance degree is the highest is defined as least favorable end loop, process is not carried out to this end and regulate.
(3) regulate the valve opening of each loop in parallel to control flow: arbitrary branch road resistance changes and must cause redistributing of whole heating network flow in parallel branch, a certain branch road valve turns down, and must cause the increase of other bypass flow when flow reduces.The aperture of terminal use's each branch road valve is regulated to control uninterrupted until each bypass flow of same loop is consistent with the design discharge of system successively; Regulate the aperture of whole system major loop valve again, till each major loop degree of hydraulic misadjustment reaches balance, complete adjustment.
(4) after step (3), check the flow of the several branches loop in HVAC system, if the flow imbalance degree of the actual flow of at least one loop and design discharge is greater than maximum imbalance degree, then return step (3); Otherwise hydraulic equilibrium regulates and terminates.
Loop in above-mentioned HVAC system is divided into near-end pipe network, middle-end pipe network and far-end pipe network according to the distance apart from above-mentioned heat exchange station, in above-mentioned step (3), first to regulate the flow of the major loop in near-end pipe network and each branch loop, regulate the flow of the major loop in middle-end pipe network and each branch loop again, the major loop finally in adjustment far-end pipe network and the flow of branch's loop.
Above-mentioned hydraulic equilibrium Flow-rate adjustment method, maximum mistake is scheduling to ± and about 10%.Degree of hydraulic misadjustment computing formula is: degree of hydraulic misadjustment X=Qs/Qj*100%; In formula, degree of hydraulic misadjustment X represents, Qs is the actual flow of each branch road, and Qj is the design discharge of each branch road.
An above-mentioned building calorimeter is uploaded to data remote transmission control system by wireless or wired mode.
Total heat meter is provided with in above-mentioned heat exchange station.
In above-mentioned steps (2), index circuit generally relatively far away, load is larger.In HVAC system, hydraulic equilibrium debugging needs to reach following 2 requirements simultaneously, and guarantee HVAC system is in most power save mode: the actual flow of (1) each user is identical with the ratio of design discharge, and the Drag distribution of system is reasonable; (2) resistance that system is total is minimum, and such water pump lift is minimum, makes the power consumption that in HVAC system, water pump is total minimum.As hypothesis, if first do not find out index circuit, in debug process, just likely index circuit is regulated in debug process.So more increase the resistance of index circuit, but simultaneously in order to reach above-mentioned (1) some requirement, the actual flow namely meeting each user is identical with the ratio of design discharge, other situations relatively preferably loop also just need to carry out larger adjustment again, because arbitrary branch road resistance changes and must cause redistributing of whole heating network flow in parallel branch, a certain branch road valve turns down, flow must cause the increase of other bypass flow when reducing, repetition like this will add total resistance of system, and such resistance is unnecessary, just to make in system water pump must power consumption larger.Therefore, in this control method, first determine index circuit and index circuit is not regulated, the total flow of system is controlled in the flow of reasonable demand, instead of enlargement discharge blindly, the total power consumption of water pump in system is dropped to minimum simultaneously.
The implication of each branch's loop in above-mentioned major loop and major loop is as follows.Generally, system is divided into total loop, major loop, branch's loop, or is specifically called that total backwater loop, main backwater loop, branch of supplying of supplying is for backwater loop.Such as, in a system, there is a total loop, there is under total loop major loop one, the second-class multiple major loop of major loop, there is under each major loop multiple branches loop.Certainly, according to the complexity of system, loop is divided into more multistage.Always first regulate the valve opening of each branch in major loop, so that reach the flow equilibrium of this loop Nei Ge branch, and then regulate the overall flow of this major loop, then adjust branch's loop of Next major loop, then adjust major loop.Until all loop adjustment complete.
Above-mentioned based in remote transmitting system hydraulic equilibrium flow rate adjusting method, loop in HVAC system is divided into near-end pipe network, middle-end pipe network and far-end pipe network by the pipeline distance apart from above-mentioned heat exchange station, in above-mentioned step (3), major loop first in adjustment near-end pipe network and the flow of each branch loop, regulate the flow of the major loop in middle-end pipe network and each branch loop again, the major loop finally in adjustment far-end pipe network and the flow of each branch loop.
In HVAC system, occur that waterpower is uneven mainly to be caused because the resistance of each loop is different.Because the length of pipe of far-end pipe network distance heating source is long, so the resistance of user in far-end pipe network is comparatively large, and near-end pipe network is short apart from the length of pipe of heating source, and therefore, the resistance of the user in near-end pipe network is less.In this adjustment method, first regulate near-end pipe network, then regulate stage casing pipe network, the object finally regulating far-end pipe network is the resistance first increasing near-end pipe network, make Resistance Value in near-end pipe network in system, middle-end pipe network and far-end pipe network equal, make resistance total in pipeline minimum.As hypothesis, if regulated from far near conversely, what first increase is the resistance of far-end pipe network, make the resistance of far-end pipe network larger, meanwhile, in order to the ratio of the actual flow with design discharge that meet each user is identical, namely the Drag distribution of system is reasonable, no longer must not increase again the resistance of near-end pipe network to reach balance, the resistance of whole system of getting off so only can be larger, more difficultly accomplishes desirable hydraulic equilibrium state.Therefore, regulate each loop by near to far away in this adjustment method, make hydraulically balanced adjustment more accurately quick.
This beneficial effect of the invention is: the hydraulic equilibrium Flow-rate adjustment method final purpose that the present invention is based on data remote transmission system is exactly that to reach the actual flow of each ring branch road consistent with design discharge.This control method can conservative control thermal source flow, prevents thermal source from wasting, and reduces water pump power consumption, and control method is fast accurate, and cost is low, have very high practical value.In this method, a building calorimeter is uploaded to data remote transmission control system by wireless or wired mode, administrative staff can carry out data analysis by the specialized management software on computer, the actual information of the control points such as final acquisition heat exchange station and each unit building, comprise the amr message data of heat meter, the situations such as the change of real-time monitoring flow and temperature, effectively reduce cost of labor and improve operating efficiency.
Detailed description of the invention
Below in conjunction with embodiment, the specific embodiment of the present invention is described, better to understand the present invention.
Embodiment
The hydraulic equilibrium Flow-rate adjustment method based on data remote transmission system in the invention process, system mainly comprises heat exchange station and terminal heat user, heat exchange station and many parallel connection each branch loops through the heat supply of terminal heat user complete heat exchange at heat exchanger, supervisor's loop there is an adjustable and balancing Fa He building calorimeter, each each branch in parallel loop has adjustable and balancing valve or control valve.This control method comprises the following steps:
(1) based on data remote transmission control system, all valves are opened: be all opened to maximum by the valve opening at each the loop pipeline place of branch arranged in heating system, according to the area of heat-supply service of heat exchange station, calculate the design discharge of heat exchange station heating demands; According to the heating area of shunt terminal user each branch loop, calculate the design discharge of each cell branch loop.
(2) determine least favorable end loop: read the flow in each loop of shunt terminal user, the loop that flow imbalance degree is the highest is defined as least favorable end loop, process is not carried out to this end and regulate.
(3) regulate the valve opening of each loop in parallel to control flow: arbitrary branch road resistance changes and must cause redistributing of whole heating network flow in parallel branch, a certain branch road valve turns down, and must cause the increase of other bypass flow when flow reduces.The aperture of terminal use's each branch road valve is regulated to control uninterrupted until each bypass flow of same loop is consistent with the design discharge of system successively; Regulate the aperture of whole system major loop valve again, till each major loop degree of hydraulic misadjustment reaches balance, complete adjustment.
(4) after step (3), check the flow of the several branches loop in HVAC system, if the flow imbalance degree of the actual flow of at least one loop and design discharge is greater than maximum imbalance degree, then return step (3); Otherwise hydraulic equilibrium regulates and terminates.
Loop in above-mentioned HVAC system is divided into near-end pipe network, middle-end pipe network and far-end pipe network according to the distance apart from above-mentioned heat exchange station, in above-mentioned step (3), first to regulate the flow of the major loop in near-end pipe network and each branch loop, regulate the flow of the major loop in middle-end pipe network and each branch loop again, the major loop finally in adjustment far-end pipe network and the flow of branch's loop.
Above-mentioned hydraulic equilibrium Flow-rate adjustment method, maximum mistake is scheduling to ± and about 10%.Wherein, degree of hydraulic misadjustment computing formula is: degree of hydraulic misadjustment X=Qs/Qj*100%; In formula, degree of hydraulic misadjustment X represents, Qs is the actual flow of each branch road, and Qj is the design discharge of each branch road.
An above-mentioned building calorimeter is uploaded to data remote transmission control system by wireless or wired mode.
Total heat meter is provided with in above-mentioned heat exchange station.
In above-mentioned steps (2), index circuit generally relatively far away, load is larger.In HVAC system, hydraulic equilibrium debugging needs to reach following 2 requirements simultaneously, and guarantee HVAC system is in most power save mode: the actual flow of (1) each user is identical with the ratio of design discharge, and the Drag distribution of system is reasonable; (2) resistance that system is total is minimum, and such water pump lift is minimum, makes the power consumption that in HVAC system, water pump is total minimum.
Above-mentioned based in remote transmitting system hydraulic equilibrium flow rate adjusting method, loop in HVAC system is divided into near-end pipe network, middle-end pipe network and far-end pipe network by the pipeline distance apart from above-mentioned heat exchange station, in above-mentioned step (3), major loop first in adjustment near-end pipe network and the flow of each branch loop, regulate the flow of the major loop in middle-end pipe network and each branch loop again, the major loop finally in adjustment far-end pipe network and the flow of each branch loop.Regulate each loop by near to far away in this adjustment method, make hydraulically balanced adjustment more accurately quick.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (5)
1. the hydraulic equilibrium Flow-rate adjustment method based on data remote transmission system, it is characterized in that: comprise heat exchange station and terminal heat user, heat exchange station and many parallel connection each branch loops through the heat supply of terminal heat user complete heat exchange at heat exchanger, supervisor's loop there is an adjustable and balancing Fa He building calorimeter, each each branch in parallel loop has adjustable and balancing valve or control valve; This control method comprises the following steps:
(1) based on data remote transmission control system, all valves are opened: be all opened to maximum by the valve opening at each the loop pipeline place of branch arranged in heating system, according to the area of heat-supply service of heat exchange station, calculate the design discharge of heat exchange station heating demands; According to the heating area of shunt terminal user each branch loop, calculate the design discharge of each cell branch loop;
(2) determine least favorable end loop: read the flow in each loop of shunt terminal user, the loop that flow imbalance degree is the highest is defined as least favorable end loop, process is not carried out to this end and regulate;
(3) regulate the valve opening of each loop in parallel to control flow: arbitrary branch road resistance changes and must cause redistributing of whole heating network flow in parallel branch, a certain branch road valve turns down, and must cause the increase of other bypass flow when flow reduces; The aperture of terminal use's each branch road valve is regulated to control uninterrupted until each bypass flow of same loop is consistent with the design discharge of system successively; Regulate the aperture of whole system major loop valve again, till each major loop degree of hydraulic misadjustment reaches balance, complete adjustment;
(4) after step (3), check the flow of the several branches loop in HVAC system, if the flow imbalance degree of the actual flow of at least one loop and design discharge is greater than maximum imbalance degree, then return step (3); Otherwise hydraulic equilibrium regulates and terminates.
2. the hydraulic equilibrium Flow-rate adjustment method based on data remote transmission system according to claim 1, it is characterized in that: the loop in described HVAC system is divided into near-end pipe network, middle-end pipe network and far-end pipe network according to the distance apart from above-mentioned heat exchange station, in above-mentioned step (3), first to regulate the flow of the major loop in near-end pipe network and each branch loop, regulate the flow of the major loop in middle-end pipe network and each branch loop again, the major loop finally in adjustment far-end pipe network and the flow of branch's loop.
3. the hydraulic equilibrium Flow-rate adjustment method based on data remote transmission system according to claim 1, is characterized in that: in described hydraulic equilibrium Flow-rate adjustment method maximum mistake be scheduling to ± about 10%; Described imbalance degree computing formula is: degree of hydraulic misadjustment X=Qs/Qj*100%; In formula, degree of hydraulic misadjustment X represents, Qs is the actual flow of each branch road, and Qj is the design discharge of each branch road.
4. the hydraulic equilibrium Flow-rate adjustment method based on data remote transmission system according to claim 1, is characterized in that: a described building calorimeter is uploaded to data remote transmission control system by wireless or wired mode.
5. the hydraulic equilibrium Flow-rate adjustment method based on data remote transmission system according to claim 1, is characterized in that: be provided with total heat meter in described heat exchange station.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106051909A (en) * | 2016-07-01 | 2016-10-26 | 北京大龙供热中心 | Dynamic balance method and system of heating pipe network |
| CN106403004A (en) * | 2016-06-20 | 2017-02-15 | 王学津 | Portable hydraulic equilibrium adjustment device and method for courtyard pipe network of heating station |
| CN106940067A (en) * | 2017-03-02 | 2017-07-11 | 上海理工大学 | It is wirelessly transferred water balance adjusting method |
| CN109253492A (en) * | 2018-07-25 | 2019-01-22 | 河北建筑工程学院 | A kind of adjusting method solving heating system hydraulic misadjustment |
| CN109539378A (en) * | 2018-11-20 | 2019-03-29 | 王建浮 | Automatically adjust the hydraulically balanced method, apparatus of heat supply secondary pipe network and system |
| CN109631148A (en) * | 2018-11-30 | 2019-04-16 | 黄维 | A kind of hydraulic balancing regulation system and its adjustment method |
| CN109681958A (en) * | 2019-01-03 | 2019-04-26 | 浙江鑫帆暖通智控股份有限公司 | A kind of floor heating divides water control system |
| CN109737494A (en) * | 2019-02-18 | 2019-05-10 | 袁水利 | A kind of method of heat exchange station flow equilibrium control |
| CN110118665A (en) * | 2019-05-08 | 2019-08-13 | 天津华春智慧能源科技发展有限公司 | Method for judging heating system thermal imbalance based on typical household room temperature and household heat meter |
| CN110701361A (en) * | 2019-10-28 | 2020-01-17 | 上海庄生机电工程设备有限公司 | Method for solving hydraulic balance by utilizing equal-percentage valve characteristic curve |
| CN110925854A (en) * | 2019-11-29 | 2020-03-27 | 润电能源科学技术有限公司 | Flow regulation method and system for improving hydraulic imbalance of secondary heat supply network |
| CN111396986A (en) * | 2020-03-26 | 2020-07-10 | 河南理工大学 | Impedance-based manual static hydraulic balance adjusting method for central heating pipe network |
| CN113685890A (en) * | 2021-07-06 | 2021-11-23 | 华能国际电力股份有限公司大连电厂 | Heat supply pipe network flow adjusting method |
| CN116305682A (en) * | 2023-01-13 | 2023-06-23 | 北京市卡姆福科技有限公司 | Two-network balance heat supply regulation and control method, system, equipment and storage medium |
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| CN109539378A (en) * | 2018-11-20 | 2019-03-29 | 王建浮 | Automatically adjust the hydraulically balanced method, apparatus of heat supply secondary pipe network and system |
| CN109631148A (en) * | 2018-11-30 | 2019-04-16 | 黄维 | A kind of hydraulic balancing regulation system and its adjustment method |
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| CN109737494A (en) * | 2019-02-18 | 2019-05-10 | 袁水利 | A kind of method of heat exchange station flow equilibrium control |
| CN110118665B (en) * | 2019-05-08 | 2020-09-22 | 天津华春智慧能源科技发展有限公司 | Method for judging heating system thermal imbalance based on typical household room temperature and household heat meter |
| CN110118665A (en) * | 2019-05-08 | 2019-08-13 | 天津华春智慧能源科技发展有限公司 | Method for judging heating system thermal imbalance based on typical household room temperature and household heat meter |
| CN110701361A (en) * | 2019-10-28 | 2020-01-17 | 上海庄生机电工程设备有限公司 | Method for solving hydraulic balance by utilizing equal-percentage valve characteristic curve |
| CN110925854A (en) * | 2019-11-29 | 2020-03-27 | 润电能源科学技术有限公司 | Flow regulation method and system for improving hydraulic imbalance of secondary heat supply network |
| CN111396986A (en) * | 2020-03-26 | 2020-07-10 | 河南理工大学 | Impedance-based manual static hydraulic balance adjusting method for central heating pipe network |
| CN113685890A (en) * | 2021-07-06 | 2021-11-23 | 华能国际电力股份有限公司大连电厂 | Heat supply pipe network flow adjusting method |
| CN113685890B (en) * | 2021-07-06 | 2023-07-25 | 华能国际电力股份有限公司大连电厂 | Heat supply pipe network flow regulating method |
| CN116305682A (en) * | 2023-01-13 | 2023-06-23 | 北京市卡姆福科技有限公司 | Two-network balance heat supply regulation and control method, system, equipment and storage medium |
| CN116305682B (en) * | 2023-01-13 | 2023-10-24 | 北京市卡姆福科技有限公司 | Two-network balance heat supply regulation and control method, system, equipment and storage medium |
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Application publication date: 20150805 |