CN102230577B - Comprehensive water quality simulation test system for quasi-closed circulation pipe network - Google Patents
Comprehensive water quality simulation test system for quasi-closed circulation pipe network Download PDFInfo
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Abstract
The invention discloses a comprehensive water quality simulation test system for a quasi-closed circulation pipe network. The comprehensive water quality simulation test system comprises a water supply subsystem and an independent circulation pipe network subsystem, wherein the water supply subsystem comprises a water supply tank with a water inlet, a water outlet and a medicament injection opening; the independent circulation pipe network subsystem is a loop comprising a main circulation pump, an electromagnetic flow meter and a high-level water supplementation and exhaust tank which are connected with one another in series through pipelines; the loop is connected with a water supplementation system for supplementing water to the loop, an emptying branch for emptying the water in the loop and a water quality monitoring system; and the pipelines of the independent circulation pipe network subsystem are connected with a medicament injection system. By using mutual coordination of all parts, the comprehensive water quality simulation test system for the quasi-closed circulation pipe network has the advantages of high simulation degree and higher similarity of an actual municipal water supply pipe network system.
Description
Technical field
The present invention relates to the Experimental mimic system technical field of potable water water supply network, particularly a kind of accurate closed circulation pipe network Water quality comprehensive simulation test system.
Background technology
Water supply network is the important component part in the water supply system, and its effect is that the water that meets national Drinking Water water quality standard after purifying through water factory is delivered to user terminal.The indices of China's most waterworks effluent quality can both reach or be better than national water quality standard for drinking water, but when being delivered to the user by pipe network, often not reaching standard even jeopardize user's body health.Data shows, the water of waterworks is from the user of dispatching from the factory, and water quality presents the trend of obvious reduction, and being mainly manifested in the content in water such as iron, manganese, colourity, turbidity, total number of bacteria increases, even surpassing national standard, this much all finds in the actual motion of water factories at home to some extent.In addition, safety, the health of water quality after although the develop rapidly of water technology has fully guaranteed to process, but the secondary pollution problem in the pipe network has become affects the principal element that effluent quality can't be up to standard, is the emphasis of water quality research work and water treatment research work.
Water supply network is just as a sensitivity, dynamic and have a huge reactor of self-characteristic, water is owing to the hold-up time in pipeline is long, itself constantly be subject to Re-pollution, complicated physics, chemistry and biology occuring in pipeline changing, cause the decline of sanitary condition in the pipeline.According in " urban water supply industry technical progress development plan in 2000 " domestic 34 main cities ductwork water quality data being added up, what surface water water factory output water was basicly stable accounts for 21%, corrosively accounts for 50%, slight fouling accounts for 29%.What underground water water factory output water was basicly stable accounts for 50%, mordantly accounts for 30%, slight corrosively accounts for 20%.To accounting for 36 urban surveys of national total supply 42.44%, the output water average turbidity is 1.3 degree, and pipe network water is increased to 1.6 degree; Colourity is increased to 6.7 degree by 5.2 degree; Iron is increased to 0.11mg/l by 0.09mg/l; Total number of bacteria is increased to 29.2cfu/ml by 6.6cfu/ml.Certain city finds that the thickness of pipe scale in the feed pipe reaches 16～20mm, redness of the skin or complexion, fishy smell is arranged, contain 16 kinds of metallic elements, detect 6 kinds of microorganisms such as iron bacteria, dust Xi Shi Escherichia coli and (see Qin Qiuli, Chen Jingyan for details, China's urban water supply safety case is analyzed and the guarantee countermeasure, water conservancy economy, 2001.5).According to city's results of regular determination pipe network coefficient of roughness statistics such as Shanghai, Tianjin, find to have reduced more than 1/3 without the pipeline water delivery ability of anti-corrosion measure.Pipeline scale, quality of water conveyance worsen, and the pipeline water delivery ability descends has become the ubiquitous phenomenon of public supply mains.
Expansion and fast propelling and the progress of society and the raising of living standards of the people of town and country one way of supplying water along with China completed region of the city, the resident no longer only has been confined to the guarantee of pressure and the water yield for the requirement of potable water, but more pay close attention to quality problem, the water stabilization of public supply mains and safety problem are increasingly urgent.Drinking water quality is not only up to standard when dispatching from the factory, and need to be up to standard at user's water swivel place, meets water quality standard for drinking water.And most important in carrying as potable water, also be that the health of the most responsive link-water supply network then is prerequisite and the basis that ensures final tap water outlet water quality safety.Change of water quality mechanism in the research pipe network proposes and the relevant reply of checking technical measures, is the key point of guaranteeing the inner health of pipe network and ensureing final pipe network tip effluent quality safety.
Carry out above research work, the pipe network experimental study is basic means, can realize by the research technique of three levels.The most direct is to carry out site test, but exists external condition uncontrollable, is difficult to carry out the problem of targetedly quantitative examination, and more crucial is that the test pipe network relates to huge numbers of families, can not add easily the medicament of test; The simplest is to carry out indoor beaker test or build simple local reaction device test, but this class test water sample is few, can not do long-time cyclic test, and there is serious test problem of dtmf distortion DTMF in the real working condition ratio with actual pipeline.Therefore, many research institutions all are inclined to and adopt the test unit of circulation pipe network model that true pipe network is carried out high analogue simulation both at home and abroad, provide panorama to show and analysis.In the prior art, circulation pipe network simulation of water quality pilot system both domestic and external all adopts the open circulation mode, namely is connected with a low level cistern in the circulating line loop, and current flow into cistern by the road afterwards, then pass through lift pump, water extraction is raised in the pipe system circulates.This cistern namely is that the former water of test allotment pond has again scavenging action concurrently, but because each circulation water sample all contacts with the air large tracts of land when flowing through cistern, can affect cycle water; And the Yuan Shui pond participates in the pipe network cyclic test, and there is some difference for flow condition and actual pipe network, causes simulate effect and true pipe network to have relatively large deviation.And, the cyclic design of whole circulation pipe network pilot system pipeline is very simple, cycling distance is shorter, therefore existing that analog distortion, controllable parameter are few, the narrow range of water quality research, be difficult to study the technological deficiencies such as operating mode and Interior habitat, is not the water quality comprehensive simulation test system for circulating pipe network on the essential meaning.
Summary of the invention
The invention provides a kind of accurate closed circulation pipe network Water quality comprehensive simulation test system, in whole accurate closed circulation pipe network Water quality comprehensive simulation test system, each parts cooperatively interacts, fidelity high, can simulate actual water main pipe network system.
A kind of accurate closed circulation pipe network Water quality comprehensive simulation test system comprises confession water subsystem and the independent loops pipe network subsystem that is connected with the confession water subsystem;
Described confession water subsystem comprises the water tank with water inlet, water delivering orifice and medicament inlet;
Described independent loops pipe network subsystem is the loop that comprises by main circulation pump, electromagnetic flowmeter and the high-order moisturizing exhaust water tank of pipeline series connection; Described loop is provided with water inlet, and the water inlet in described loop and the water delivering orifice of water tank are by the pipeline communication with the first valve;
Described loop is connected with the water charging system that is used to the loop supplementing water, the water quality monitoring system that is used for discharging the emptying branch road of loop water and is used for the water quality of monitoring circuit water;
Described water charging system comprises experiment water filling tank and the experiment water dispenser pump of series connection, described experiment water filling delivery side of pump and circuit communication, and the entrance of described experiment water filling tank is communicated with the water delivering orifice of water tank;
The end face of described water tank and high-order moisturizing exhaust water tank is close to the same level face, described surface level is positioned at the horizontal extreme higher position of described accurate closed circulation pipe network Water quality comprehensive simulation test system, and the placement location of described main circulation pump is lower than the placement location of water tank and high-order moisturizing exhaust water tank;
Described high-order moisturizing exhaust water tank comprises casing and is positioned at the piston-like floating head of casing, leaves the space between described piston-like floating head and the cabinet wall; The density of described piston-like floating head is less than the density of water.
The described water tank closed circulation pipe network Water quality comprehensive simulation test system that is as the criterion provides the water source, the water delivering orifice of described water tank generally is positioned at the bottom of water tank, it is the basal surface position of water tank or near the sidewall of the water tank of water tank bottom surface, like this, water in the water tank can flow in the independent loops pipe network subsystem better, is that independent loops pipe network subsystem supplies water better.The water source of water tank, water inlet by water tank after general employing tap water ships by the direct water supply of the water inlet of water tank or water storage vehicle directly pours into water tank, also can be according to the experiment needs, add medicament by the medicament inlet and carry out distributed in demand, obtain required resource of water supply.
In order not make water in the water tank contaminated and successfully the gas in the water tank is discharged, the water tank dust cap that area is slightly larger than the water tank end face is stamped at the top of described water tank; The top side wall of described water tank is provided with the through hole for exhaust.
Described water tank is connected with the pipeline branch road with the mixing circulation pump, and the two ends of described pipeline branch road are communicated with water tank respectively; Preferably there is difference in height between the two ends of described pipeline branch road, be located at the water tank bottom surface or near the water tank sidewall of water tank bottom surface such as an end of pipeline branch road, the other end of pipeline branch road is located at the water tank end face or near the water tank sidewall of water tank end face.Like this, between the two ends of the pipeline branch road of water tank certain difference in height is just arranged, under the effect of mixing circulation pump, water in the water tank from the end (being the low side of pipeline branch road) of pipeline branch road out, enter from the other end (being the high-end of pipeline branch road) of pipeline branch road again, so that the water in the water tank fully stirs, finally mix.
Described main circulation pump provides power for the ducted water circulation operation of independent loops pipe network subsystem, so that the ducted water of independent loops pipe network subsystem can have stable flow velocity, preferably, the bottom surface of main circulation pump is positioned at the floor level face of accurate closed circulation pipe network Water quality comprehensive simulation test system, so that when being full of the test water from water tank in the pipeline of independent loops pipe network subsystem, the main circulation pump inner chamber body also can be full of water, and the startup main circulation pump is that the ducted water extraction of independent loops pipe network subsystem supplies power.The control of flow velocity adopts the variable frequency control of main circulation pump to finish, and the measurement of flow velocity can be adopted electromagnetic flowmeter.
Can adopt experiment water filling tank and the experiment water dispenser pump of series connection in the described water charging system, simultaneously electromagnetic flowmeter can also be set feeds back rate of water make-up, this water charging system mainly is can provide power when initialization, so that the former water liquid level of test that enters in the high-order exhaust replenishing water tank of water of circulation pipe network subsystem is higher than the water tank liquid level, but the former water major part of the test in the water tank enters independently in the circulation pipe network subsystem like this, saves former damage by water consumption.When the needs of water quality monitoring system owing to the monitoring sampling, when causing the ducted water minimizing of independent loops pipe network subsystem, in view of the reduction of water of sampling is very little, can finish moisturizing by the retaining of the circulation of the participation in the high-order exhaust replenishing water tank of water, when the water flow of pipeline rate of water make-up of circulation pipe network subsystem is larger, be that the pipeline of circulation pipe network subsystem needing after the exhaust to carry out replenishing the water table ratio of relatively large water or high-order exhaust replenishing water tank of water when low, can adopt water charging system to carry out moisturizing, so that at high-order exhaust replenishing water tank of water retaining is arranged all the time, remain on suitable level, prevent that air from entering into the pipeline of circulation pipe network subsystem.
The route atmospheric valve is propped up in described emptying and the system blow-down pipe forms, and the circulation pipe network water of finishing after the simulation test is all discharged, and then again pours water by water tank again, begins new test.
Although be provided with water tank both at home and abroad in the pipeline network simulation system to get rid of the air in the pipeline, avoid occurring in the closed circuit vacuum and then produce unstability and vibration.But existing water tank is uncovered casing, the water tank of this structure will be inevitable so that water sample has the chance with contact with air in cyclic process, cause the change of water quality character in each circulation, cause the fidelity of pipeline network simulation to descend, make result of study larger deviation occur.For this reason, in the accurate closed circulation pipe network of the present invention Water quality comprehensive simulation test system, high-order moisturizing exhaust water tank in the independent loops pipe network subsystem is provided with the piston-like floating head identical with bottom shape, described piston-like floating head is placed horizontally in the high-order moisturizing exhaust water tank, and and high-order moisturizing exhaust tank inner wall between leave the space, the density of described piston-like floating head is less than the density of water, the piston-like floating head just can water level rising or decline in high-order moisturizing exhaust water tank be done the piston type motion like this, in guaranteeing emptying pipeline, reduce as much as possible circulating water flow and the chance that the pipe outer air contacts in the gas, guarantee that simulation pipeline water quality is consistent with true pipe network.Requirement to density mainly is for the piston-like floating head can be floated, described density refers to the density of piston-like floating head integral body, be not to be the density of the material of piston-like floating head, can adopt the centre of being made by thin corrosion resistant plate to be full of the closed piston type floating head of air such as the piston-like floating head, such piston type floating head also can float on the water, and satisfies the present invention for the density requirements of piston-like floating head.
Described high-order moisturizing exhaust water tank, its wall is vertical with the bottom surface, is the shape of an arbitrary xsect and the solid that area all equates.The piston-like floating head that more convenient like this shape is similar to xsect, area is slightly less than xsect can be done the piston motion by in the vertical direction, simultaneously, the high-order moisturizing exhaust water tank end face dust cap that area is slightly larger than high-order moisturizing exhaust water tank end face is stamped at the top of described high-order moisturizing exhaust water tank, and described high-order moisturizing exhaust water tank end face dust cap can obtain effectively to support by high-order moisturizing exhaust tank box.The top side wall of described high-order moisturizing exhaust water tank is provided with the through hole for exhaust, like this, can greatly reduce water sample in cyclic process with the chance of contact with air, the air in the recirculated water in the independent loops pipe network subsystem can be discharged smoothly again.Preferably, it is cylindrical can selecting the casing of high-order moisturizing exhaust water tank.
For the bubble in the ducted water of better emptying independent loops pipe network subsystem, the water delivering orifice of described high-order moisturizing exhaust water tank is positioned at the bottom of high-order moisturizing exhaust water tank, namely be positioned at high-order moisturizing exhaust water tank sidewall or high-order moisturizing exhaust water tank bottom surface near high-order moisturizing exhaust water tank bottom surface, the water inlet of described high-order moisturizing exhaust water tank is higher than the water delivering orifice of high-order moisturizing exhaust water tank and is lower than high-order moisturizing exhaust water tank case Senior Two/one position.Like this, the water inlet of high-order moisturizing exhaust water tank just is higher than the water delivering orifice of high-order moisturizing exhaust water tank, and the ducted water of independent loops pipe network subsystem just has certain drop when flowing through, and bubble will rise because density is little like this, easily discharges.
The pipeline that described independent loops pipe network subsystem is a plurality of and a plurality of independent loops pipe network subsystems is identical or different; The pipeline of described independent loops pipe network subsystem is ductile iron pipe, polyethylene pipe (PE pipe), copper pipe or stainless-steel tube.The pipeline of independent loops pipe network subsystem is exactly the carrier of the water flow in the circulation pipe network, it also is transportation environment, because the pipeline of unlike material is to the degree varies sample of the secondary pollution of water, the concrete chemistry that occurs, physics also can be different with biological the variation, therefore, the present invention has chosen ductile iron pipe commonly used in actual pipeline, the PE pipe, copper pipe, stainless-steel tubes etc. are as the pipeline of independent loops pipe network subsystem, to study different pipelines to the impact of change of water quality in the transportation pipe network, relevant reply technical measures are proposed, and the validity of the relevant reply of checking technical measures.
Can link to each other with a plurality of independent loops pipe network subsystems for water subsystem among the present invention, a plurality of independent loops pipe network subsystems all can independently be tested, link to each other with four independent loops pipe network subsystems for water subsystem such as one, namely the pipeline for water subsystem connection independent loops pipe network subsystem is the independent loops pipe network subsystem of ductile iron pipe, the pipeline of independent loops pipe network subsystem is the independent loops pipe network subsystem of PE pipe, the pipeline of independent loops pipe network subsystem is that the independent loops pipe network subsystem of stainless-steel tube and the pipeline of independent loops pipe network subsystem are the independent loops pipe network subsystem of copper pipe.
In order to monitor the ducted water quality situation of independent loops pipe network subsystem, the pipeline of independent loops pipe network subsystem is connected to the water quality monitoring system for the water quality of monitoring circuit water, sampling is considerably less for the water yield of water quality monitoring on the pipeline of independent loops pipe network subsystem, almost can ignore, generally just can finish moisturizing (in the special test situation by the retaining in the high-order exhaust replenishing water tank of water, moisturizing demand in the pipeline of independent loops pipe network subsystem surpasses the available maximum rate of water make-up in the high-order exhaust water supply tank, can also pass through in time moisturizing of water charging system).Therefore, generally speaking, water sample can directly enter trench through water quality monitoring system.But in order to reduce the water yield that gathers water sample to the impact of water in the pipeline of independent loops pipe network subsystem: described water quality monitoring system can not be comprised of by the circulating line branch road water quality monitoring circulating line branch road and water quality monitoring as far as possible; Described water quality monitoring circulating line branch road comprises in parallel conductivity meter, pH instrument and dissolved oxygen tester, the two ends of described water quality monitoring circulating line branch road respectively with the pipeline communication of independent loops pipe network subsystem.Because monitored conductivity, water body pH monitoring and dissolved oxygen DO monitoring do not relate to chemical change, just can monitor, therefore, the water quality of water is basic identical in the water quality of the water sample of above-mentioned process monitoring and the pipeline of independent loops pipe network subsystem, water sample after the monitoring can be got back in the pipeline of independent loops pipe network subsystem by the water quality monitoring closed circuit again, for the foregoing reasons, monitored conductivity, water body pH monitoring and dissolved oxygen DO monitoring can be adopted Real-Time Monitoring, namely monitor at any time, can not cause the unstability of the ducted current of monitoring independent loops pipe network subsystem, wherein, described monitored conductivity, water body pH monitoring and dissolved oxygen DO monitoring can be adopted commercially available instrument and equipment.
Described water quality monitoring can not comprise residual chlorine detecting instrument, turbidity detector and granule content detector in parallel by the circulating line branch road, described water quality monitoring can not the circulating line branch road an end and the pipeline communication of independent loops pipe network subsystem, other end access trench.Because residual chlorine monitoring, turbidity monitoring and granule content monitoring need to add medicament, changed test water water quality in the circulating line, or diversion out detects rear decompression, can't get back in the pipeline of independent loops pipe network subsystem by pressure differential again, therefore, can only enter in the trench, wherein residual chlorine monitoring, turbidity monitoring and granule content monitoring can adopt commercially available instrument to monitor, in order to reduce the loss of water sample, the intermittently mode of periodic monitor is taked in the test of these three indexs.But the people for open, shutoff operation, also can automatically open according to initial time, the interval time set, after reaching stable testing required time and transmission and showing read signal, autoshutdown.
For various working such as the secondary sterilization (such as chloramines, chlorine dioxide, ozone, sodium hypochlorite etc.) of simulating actual water supply network, xenobiotic pollutants invasion, water quality mutations, study its Regular of Water Quality Variation, be connected with the medicament loading system on the pipeline of described independent loops pipe network subsystem, described medicament loading system comprises medicament filling tank and the medicament dispenser pump of series connection.Can optionally add medicament by the medicament loading system, wherein, the medicament dispenser pump is selected the delicate metering dispenser pump, and the delicate metering dispenser pump can be according to the amount that adds the medicament of setting working time of setting, thereby realizes accurately joining day and the dosage of control medicament.The number of described medicament loading system can increase or reduce as required.When accurate closed circulation pipe network Water quality comprehensive simulation test system carries out simulation test, sometimes need the water quality result that monitors according to water quality monitoring system, select medicament to add, preferably the number of medicament loading system is 1～5.Can also be according to the water quality result behind the water quality monitoring system monitoring adding medicament, such as the monitoring of the DBPs after the sterilization.In addition, tracer agent also can add by the medicament loading system, can control exactly by the medicament dispenser pump amount of the tracer agent of filling, the basis that guarantees each test condition is consistent, before test by adding tracer agent, guarantee that flushing of pipeline is clean, thereby can not cause interference to the result of test, the warranty test result's is accurate.
The pipeline of described independent loops pipe network subsystem is provided with the outlet for artificial water intaking sampling, and be provided with the second valve in the exit position, when water sampling not, close the second valve, when the needs water sampling, open the second valve, can directly from this outlet water sampling, adopt the method for chemical reaction or the water-quality guideline of instrumental method analytical sampling water.
The present invention has following advantage:
The water tank of the present invention closed circulation pipe network Water quality comprehensive simulation test system that can be as the criterion provides the tap water of various water quality, to satisfy accurate closed circulation pipe network Water quality comprehensive simulation test system to the research requirement at different quality water source, the different quality that occurs in the pipe network transportation with the tap water that dispatches from the factory of tackling current different local different quality changes and different secondary pollution problems, the problem of output water appearance in the pipe network transportation that can higher analogue simulation.
Bubble in the good emptying circulation pipe network of the high-order moisturizing exhaust of the present invention water tank energy, and the water that is lost in can the rapid complementary testing of retaining with actual participation circulation in the high-order moisturizing exhaust water tank, when the liquid level in the high-order moisturizing exhaust water tank is low, can carry out moisturizing by water charging system, so that the water flow that circulating pipe network water quantity integrated simulation test is similar in reality and the circulation pipe network is stable, thereby guaranteed the accuracy of test findings.
Water quality monitoring system of the present invention and electromagnetic flowmeter can be realized residual chlorine monitoring well, the turbidity monitoring, the granule content monitoring, residual chlorine monitoring, the turbidity monitoring, granule content monitoring and flow monitoring, the parameter of water quality and the monitoring of running status in the circulation pipe network have been guaranteed, thereby the operating mode in the circulation pipe network there is comprehensive grasp, thereby more be conducive to study clear physical change wherein, chemical change and biological the variation, such as Chlorine Decay rule and dynamic analysis, model and the Biochemical Mechanism analysis of the formation of DBPs migration in the pipe network, the biological stability of water supply network and chemical stability, the basic research such as microhabital provides the analog hardware platform of high emulation in pipe scale electrochemical mechanism and the pipe, for the prevention and control of water supply network secondary pollution provide the basic theory data.
Medicament loading system of the present invention can accurately be controlled filling time and filling dosage, can carry out accurate closed circulation pipe network Water quality comprehensive simulation test system secondary, three chlorinations, the xenobiotic pollutants invasion, the simulation of the operating modes such as water quality mutation, be used for the research medicament filling time, Regular of Water Quality Variation after filling dosage and xenobiotic pollutants are invaded and potential hazard etc., and the validity of checking counter-measure, promoted the adaptability of water quality comprehensive simulation test system for circulating pipe network, to transforming existing drinking water treatment flow process, development new technologies and new technology, set up method and the strategy of drinking water quality pollution control in the pipe network, provide safe and Wholesome Drinking Water to have important theory directive significance and engineering using value.
The accurate closed circulation pipe network of the present invention Water quality comprehensive simulation test system provides a good platform for the correlative study of the causative mechanism carrying out ductwork water quality and pollute, influence factor, control method, to transforming existing treatment scheme, setting up method and strategy that ductwork water quality pollutes control.The accurate closed circulation pipe network of the present invention Water quality comprehensive simulation test system is the feedwater quality stabilizing agent, antiseptic, the pharmaceutical preparations such as sterilization sustained release agent, give water treatment Novel sterilizing technology and means, the new technologies such as novel tube application, new method, new tool, the hardware place that provides security and efficiency evaluation to detect, be new technology, new method provides standard method and the means of testing and appraisal to the impact of ductwork water quality, is of great significance and provides safe and Wholesome Drinking Water to have important theory directive significance and engineering using value for the research tool of feedwater quality problem.
Description of drawings
Fig. 1 is the structural representation of the accurate closed circulation pipe network of the present invention Water quality comprehensive simulation test system.
Embodiment
As shown in Figure 1, the accurate closed circulation pipe network of the present invention Water quality comprehensive simulation test system, by 1 for water subsystem with are connected by pipeline 2 (hereinafter to be referred as pipeline 2) and the independent loops pipe network subsystem that is connected for water subsystem for water subsystem.
Four independent loops pipe network subsystems are the first independent loops pipe network subsystem, the second independent loops pipe network subsystem, the 3rd independent loops pipe network subsystem and the 4th independent loops pipe network subsystem.
The first independent loops pipe network subsystem comprises pipeline 10, water charging system 11, emptying branch road 12, water quality monitoring system 13, the first medicament loading system 15, the second medicament loading system 16, valve 17 and the valve 18 of main circulation pump 7, electromagnetic flowmeter 8, high-order moisturizing exhaust water tank 9, independent loops pipe network subsystem.Main circulation pump 7, electromagnetic flowmeter 8 and high-order moisturizing exhaust water tank 9 are connected successively by the pipeline 10 of independent loops pipe network subsystem and are formed the loop, are being provided with valve 17 near electromagnetic flowmeter 8 places between main circulation pump 7 and the electromagnetic flowmeter 8.The end face of high-order moisturizing exhaust water tank 9 and water tank 1 is positioned at the horizontal highest level face of accurate closed circulation pipe network Water quality comprehensive simulation test system; The placement location of main circulation pump 7 is positioned at the extreme lower position of accurate closed circulation pipe network Water quality comprehensive simulation test system.The total length of the pipeline 10 of independent loops pipe network subsystem is 78m, and the internal diameter of the pipeline of independent loops pipe network subsystem is 150mm.
High-order moisturizing exhaust water tank 9 is cylindrical, volume is 400L, height is highly consistent with water tank 1, high-order moisturizing exhaust water tank 9 is built-in with circular piston-like floating head 903, area is slightly less than high-order moisturizing exhaust water tank 9, so that piston-like floating head 903 levels can leave certain space with the inwall of high-order moisturizing exhaust water tank 9 when putting into, the density of piston-like floating head 903 is less than the density of water, and the centre that piston-like floating head 903 is made by thin corrosion resistant plate is full of the closed piston type floating head of air.When high-order moisturizing exhaust water tank 9 is water-filled, piston-like floating head 903 under the effect of buoyancy of water along the rising of high-order moisturizing exhaust water tank 9 water levels or reduce and do up and down piston and move.Dust cap 904 is stamped at the top of high-order moisturizing exhaust water tank 9, the area of dust cap 904 is slightly larger than the end face of high-order moisturizing exhaust water tank 9, and in effectively support of high-order moisturizing exhaust water tank 9 casings acquisition, be provided with small through hole (not marking) for exhaust at the sidewall near the high-order moisturizing exhaust water tank 9 of high-order moisturizing exhaust water tank 9 end faces, can be successfully with the Bas Discharged in the water in the pipeline 10 of independent loops pipe network subsystem.Like this, the space exhaust is gone out between the piston-like floating head that the air in the pipeline 10 of independent loops pipe network subsystem can be by high-order moisturizing exhaust water tank 9 and tube wall, has also realized standard sealing isolation to this high position moisturizing exhaust water tank 9 by the piston-like floating head simultaneously.High-order moisturizing exhaust water tank 9 is provided with the water inlet 901 of high-order moisturizing exhaust water tank and the water delivering orifice 902 of high-order moisturizing exhaust water tank, the water inlet 901 of high-order moisturizing exhaust water tank is positioned at high-order moisturizing exhaust water tank case Senior Three/one position, and the water delivering orifice 902 of high-order moisturizing exhaust water tank is positioned at the high-order moisturizing exhaust water tank sidewall of close high-order moisturizing exhaust water tank bottom surface and is lower than the water inlet 901 of high-order moisturizing exhaust water tank.The pipeline 10 of the independent loops pipe network subsystem of the water inlet 901 of close high-order moisturizing exhaust water tank 9 is provided with valve 18, valve 18 is motorized valve, adopt the industrial process operation valve, can adjust aperture, in the constant situation of main circulation pump 7 frequencies, also can control the flow of ducted water by the aperture of adjusting valve 18.
The pipeline 10 of independent loops pipe network subsystem is provided with the first outlet 1001 of the pipeline 10 of independent loops pipe network subsystem, the second outlet 1002 of the pipeline 10 of independent loops pipe network subsystem, the triple feed inlet 1003 (water inlet in loop) of the pipeline 10 of independent loops pipe network subsystem, the 4th outlet 1004 of the pipeline 10 of independent loops pipe network subsystem, the first import 1005 of the pipeline 10 of independent loops pipe network subsystem, the triple feed inlet 1007 of the second import 1006 of the pipeline 10 of independent loops pipe network subsystem and the pipeline 10 of independent loops pipe network subsystem.
Water quality monitoring system 13 can not be comprised of by circulating line branch road 1302 water quality monitoring circulating line branch road 1301 and water quality monitoring, water quality monitoring circulating line branch road 1301 is by conductivity meter (not marking), pH instrument (not marking) and dissolved oxygen tester (not marking) three is in parallel is communicated with, and water quality monitoring circulating line branch road 1301 is the first import 1005 of the pipeline of first outlet 1001 of pipeline of pipeline access independent loops pipe network subsystem of 20mm and independent loops pipe network subsystem by internal diameter.Water quality monitoring can not be composed in parallel by residual chlorine detecting instrument (not marking), turbidity detector (not marking) and granule content detector (not marking) three by circulating line branch road 1302, water quality monitoring can not closed circuit 1302 an end be first outlet 1001 of pipeline of the pipeline access independent loops pipe network subsystem of 20mm by internal diameter, other end access trench.
The second outlet 1002 of the pipeline 10 of independent loops pipe network subsystem is connected to the emptying branch road 12 that atmospheric valve 1201 and system's blow-down pipe 1202 are composed in series.The triple feed inlet 1003 of the pipeline of independent loops pipe network subsystem is communicated with the water delivering orifice 101 of water tank 1 by pipeline 2; The 4th outlet 1004 of the pipeline 10 of independent loops pipe network subsystem is connected to the intake with the second valve (not mark), opens valve when gathering water sample, behind the collection water sample, carries out required test, at the other times valve-off; The second import 1006 of the pipeline 10 of independent loops pipe network subsystem is connected to the first medicament loading system 15 that the first medicament filling tank 1501 and the first delicate metering dispenser pump 1502 are composed in series, and the triple feed inlet 1007 of the pipeline 10 of independent loops pipe network subsystem is connected to the second medicament loading system 16 that the second medicament filling tank 1601 and the second delicate metering dispenser pump 1602 are composed in series.
For being provided with the first valve 14 between water subsystem and the first independent loops pipe network subsystem; The first valve 14 is in parallel with the water charging system 11 that is composed in series by the pipeline 1101 of water charging system, experiment water filling tank 1102, experiment water dispenser pump 1103 and electromagnetic flowmeter 1104, the outlet of electromagnetic flowmeter 1104 is communicated with the pipeline 10 of independent loops pipe network subsystem by the pipeline 1101 of water charging system, and the entrance of experiment water filling tank 1102 is communicated with pipeline 2 by the pipeline 1101 of water charging system; The internal diameter of the pipeline 1101 of water charging system is 50mm, and the volume of experiment water filling tank 1102 is 100L, in a ball float water intaking valve is arranged.
Supply water subsystem to link to each other with the second independent loops pipe network subsystem, the 3rd independent loops pipe network subsystem and the 4th independent loops pipe network subsystem by above-mentioned connected mode, the second independent loops pipe network subsystem, the 3rd independent loops pipe network subsystem and the 4th independent loops pipe network subsystem pass through respectively B end on the pipeline 2, C end, D end and supply water subsystem to be communicated with.
Each independent loops pipe network subsystem pipeline is the same with equipment, difference, just be: the pipeline of independent loops pipe network subsystem is different, the pipeline of the independent loops pipe network subsystem of the first independent loops pipe network subsystem is ductile iron pipe, the pipeline of the independent loops pipe network subsystem of the second independent loops pipe network subsystem is the PE pipe, the pipeline of the independent loops pipe network subsystem of the 3rd independent loops pipe network subsystem is stainless-steel tube, and the pipeline of the independent loops pipe network subsystem of the 4th independent loops pipe network subsystem is ductile iron pipe.Ductile iron pipe is comparatively commonly used, the physics that the water quality of simulating in ductile iron pipe for water at circulation pipe network water quality integrated simulation experiment occurs in transportation, chemistry and biological variation, meaning is very great, because the time that some circulating pipe network water quantity integrated simulation test needs is long, and it is also many to utilize ductile iron pipe to do circulating pipe network water quantity integrated simulation test, in order to satisfy the needs of test, the pipeline of the independent loops pipe network subsystem of the pipeline of the independent loops pipe network subsystem of the first independent loops pipe network subsystem and the 4th independent loops pipe network subsystem has all adopted ductile iron pipe in the test, to satisfy the test demand.
The accurate closed circulation pipe network of the present invention Water quality comprehensive simulation test system specific works flow process is as follows: at first, the water inlet 102 by water tank 1 adds pipe network cyclic test to be entered more than 2000 liters in the water tank 1 and needs the former water of its Regular of Water Quality Variation of research.This goes on foot available 2 kinds of modes, and the first is directly to ship the output water of waterworks to be studied with water storage vehicle, and the water inlet 102 by water tank 1 directly pours into water tank 1.The second is the tap water that adds pipe network end more than 2000 liters by the water inlet 102 of water tank 1 toward water tank 1, the main water-quality guideline that will study according to test again, to prepare the medicament of concentration (as adding the chlorination before sodium hypochlorite Simulative tap water output water enters pipe network by the medicament inlet 103 of water tank 1, the change of water quality physics law of the tap water that research contains the variable concentrations chlorion after long-time long distance running flows in pipe network), pour into water tank 1 to realize the former water of artificial allotment test.Secondly, as required, can open valve 4 and valve 5, start mixing circulation pump 3, so that the water in the water tank 1 from the outlet 104 of water tank 1 out returns the import 105 of water tank 1, so that the liquid of the water in the water tank 1 and injection mixes.
Begin to start main circulation pump 7, main circulation pump 7 is frequency variable circulating pump, the closed circuit flow is realized by the frequency of regulating main circulation pump 7, water in the pipeline 10 is under the effect of main circulation pump 7, circulate, bubble in the pipeline 10 can be recycled water and take in the high-order moisturizing exhaust water tank 9 and drain: owing to exist certain difference in height between the water delivering orifice 902 of the water inlet 901 of high-order moisturizing exhaust water tank 9 and high-order moisturizing exhaust water tank 9, water is come in from the water inlet 901 of high-order moisturizing exhaust water tank 9, water delivering orifice 902 from high-order moisturizing exhaust water tank 9 is sucked away again, running orbit in high-order moisturizing exhaust water tank 9 from top to bottom, and after being recycled bubble that water brings into and coming in from the water inlet 901 of high-order moisturizing exhaust water tank 9, although can under inertia effect, can move to water delivering orifice 902 directions of high-order moisturizing exhaust water tank 9 from top to bottom with the recirculated water running orbit at the beginning, but because its density is very little, be subject to very large rising buoyancy, can rise, between the water inlet 901 of high-order moisturizing exhaust water tank 9 and the water delivering orifice 902 enough large difference in height apart from buffering under, can be again by water delivering orifice 902 upstream lines, but can exist certain space discharge by the inwall by piston-like floating head 903 and high-order moisturizing exhaust water tank 9 after come-up, and the through hole that is used for exhaust that final casing by high-order moisturizing exhaust water tank 9 is provided with is discharged.When the water level in the high-order moisturizing exhaust water tank 9 hangs down owing to the exhaust water level, can adopt water charging system 11 that it is carried out moisturizing, so that high-order moisturizing exhaust water tank 9 is kept certain high liquid level, prevent that air from entering into independent loops pipe network subsystem again, electromagnetic flowmeter 8 can feed back the interior circular flow of pipe of the pipeline 10 of main circulation pump 7 variable frequency control, the independent loops pipe network subsystem that consists of like this can so that the former water of the test within the pipeline 10 relative one relatively the environment of sealing circulate, the closed circulation that namely is as the criterion, thereby various situations and the more approaching reality of resulting result of utilizing the simulation test of accurate closed circulation pipe network Water quality comprehensive simulation test system to simulate.
Water quality monitoring system 13 can not be comprised of by circulating line branch road 1302 water quality monitoring circulating line branch road 1301 and water quality monitoring, water quality monitoring circulating line branch road 1301 is not by online conductivity meter (marking), PH instrument (not marking) and dissolved oxygen tester (not marking) three are in parallel to be communicated with, water quality monitoring circulating line branch road 1301 is the first import 1005 of the pipeline of first outlet 1001 of pipeline of pipeline access water quality monitoring independent loops pipe network subsystem of 20mm and independent loops pipe network subsystem by the pipe interior diameter, can monitor at any time, because at monitored conductivity, water body pH monitoring and dissolved oxygen DO monitoring do not need to add reagent, do not relate to chemical change, the water quality of monitoring substantially can be regarded as and not change, can decompression yet, therefore, above-mentioned water sample can also be got back in the pipeline 10 by water quality monitoring circulating line branch road 1301 after monitoring, and monitoring can be carried out in the pipeline operational process at any time.Water quality monitoring can not be composed in parallel by online residual chlorine detecting instrument (not marking), turbidity detector (not marking) and granule content detector (not marking) three by circulating line branch road 1302, water quality monitoring can not circulating line branch road 1302 an end be first outlet 1001 of pipeline 10 of the pipeline access independent loops pipe network subsystem of 20mm by the pipe interior diameter, other end access trench.Because the loop of this design relates to add medicament, changed test water water quality in the circulating line, or diversion out detects rear decompression, can't get back in the circulation supervisor by pressure differential again, in order not affect, do not pollute the water quality in the pipeline 10, will be for residual chlorine monitoring, the water of the decompression of water sample after monitoring of turbidity monitoring and granule content monitoring, directly enter trench, like this, water in the pipeline 10 can reduce thereupon, although it is very little to be used for the water yield of the water sample that the on-line monitoring sampling discharges, but open continuously sampling always, integration loss also can be very large, thereby affect test accuracy, therefore, in order to reduce the loss of water sample, residual chlorine monitoring, can set as required the interval time of turbidity monitoring and granule content monitoring, and generally be used for chlorine residue, being captured in of the water sample of turbidity and granule content on-line monitoring should not be too frequent on the basis of satisfying the test figure requirement.Simultaneously, the retaining meeting of the participation circulation in the high-order moisturizing exhaust water tank 9 replenishes (in the special test situation at any time, moisturizing demand in the pipeline 10 surpasses the available maximum rate of water make-up in the high-order exhaust water supply tank 9, can also pass through rapidly in time moisturizing of water charging system 11), thus make the recirculated water operation in the pipeline 10 keep stable.
Conductivity, water body pH, dissolved oxygen DO, chlorine residue, turbidity and the granule content in the pipeline 10 of monitoring independent loops pipe network subsystems with water quality monitoring system 13, can also be by the 4th outlet 1004 with the second valve of pipeline 10, open and close by the second valve, carry out artificial sample water intaking, and then the water sample that collects transferred to carry out offline inspection in the analytical instrument.
Conductivity in the pipeline 10 of the independent loops pipe network subsystem that monitors for water quality monitoring system 13, water body pH, dissolved oxygen DO, chlorine residue, outside the variation of turbidity and granule content, the accurate closed circulation pipe network of the present invention Water quality comprehensive simulation test system can also be by adding medicament in the first medicament loading system 15 and the second medicament loading system 16 direct former water of test in pipeline 10, can simulate the change of water quality process after secondary in the actual water supply network way adds sanitizer (such as the secondary chlorination), medicament delivery is advanced the first medicament filling tank 1501 and the second medicament filling tank 1601, then at the first delicate metering dispenser pump 1502 and the second delicate metering dispenser pump 1602 (as required, the interval time that set to add and each addition) effect under, render in the pipeline 10 of independent loops pipe network subsystem.
At present, domestic waterworks all is the disposable disinfection by chlorine agent that adds capacity in output water, still can keep preferably water quality when the tap water of water quality reaching standard is carried arrival user fire hose head end through the long distance of pipe network when dispatching from the factory with maintenance.But output water has the long weak point that has to the conveyance conduit of pipe network user water swivel end, for the tap water that makes long pipeline retention time can keep water quality, may just need to when dispatching from the factory, add more sanitizer, the harm that will bring a lot of user's disinfection of tap water accessory substances that connect than the short tube net to exceed standard, if add few, the user's tap water that connects than the long tube net might have again bacterium, the organism water quality that exceeds standard can't keep harm up to standard, and this is a problem of facing a difficult choice.Therefore, external a lot of Advanced Cities is analyzed by pipe network optimization, set up the equipment of secondary chlorination (also can add other sanitizers) in the appropriate node midway that connects than the long tube net, to reduce output water chlorine dosage once, can significantly reduce the residual harm of DBPs in the tap water.And the first medicament loading system 15 of the present invention and the second medicament loading system 16 can be simulated the secondary of pipe network, the test that adds sanitizer three times.By the 4th outlet 1004 intakes with the second valve that are connected to of water quality monitoring system 13 and the pipeline by independent loops pipe network subsystem the water quality in the pipeline 10 of independent loops pipe network subsystem is monitored again, thus the situation of water quality and the attenuation change rule of detoxicated product and DBPs behind its Disinfection Effect of the analysis that can quantize, sterilization.
Claims (10)
1. an accurate closed circulation pipe network Water quality comprehensive simulation test system is characterized in that, comprises confession water subsystem and the independent loops pipe network subsystem that is connected with the confession water subsystem;
Described confession water subsystem comprises the water tank with water inlet, water delivering orifice and medicament inlet;
Described independent loops pipe network subsystem is the loop that comprises by main circulation pump, electromagnetic flowmeter and the high-order moisturizing exhaust water tank of pipeline series connection; Described loop is provided with water inlet, and the water inlet in described loop and the water delivering orifice of water tank are by the pipeline communication with the first valve;
Described loop is connected with the water charging system that is used to the loop supplementing water, the water quality monitoring system that is used for discharging the emptying branch road of loop water and is used for the water quality of monitoring circuit water;
Described water charging system comprises experiment water filling tank and the experiment water dispenser pump of series connection, described experiment water filling delivery side of pump and circuit communication, and the entrance of described experiment water filling tank is communicated with the water delivering orifice of water tank;
The end face of the end face of described water tank and high-order moisturizing exhaust water tank is close to the same level face, described surface level is positioned at the horizontal extreme higher position of described accurate closed circulation pipe network Water quality comprehensive simulation test system, and the placement location of described main circulation pump is lower than the placement location of water tank and high-order moisturizing exhaust water tank;
Described high-order moisturizing exhaust water tank comprises casing and is positioned at the piston-like floating head of casing, leaves the space between described piston-like floating head and the cabinet wall; The density of described piston-like floating head is less than the density of water.
2. accurate closed circulation pipe network Water quality comprehensive simulation test system according to claim 1 is characterized in that the water delivering orifice of described water tank is positioned at the bottom of water tank;
Described water tank is connected with the pipeline branch road with the mixing circulation pump, and the two ends of described pipeline branch road are communicated with water tank respectively;
The water tank dust cap that area is slightly larger than the water tank end face is stamped at the top of described water tank;
The top side wall of described water tank is provided with the through hole for exhaust.
3. accurate closed circulation pipe network Water quality comprehensive simulation test system according to claim 2 is characterized in that between the two ends of described pipeline branch road difference in height being arranged.
4. accurate closed circulation pipe network Water quality comprehensive simulation test system according to claim 1 is characterized in that the wall of described high-order moisturizing exhaust water tank is vertical with the bottom surface;
The high-order moisturizing exhaust water tank dust cap that area is slightly larger than high-order moisturizing exhaust water tank end face is stamped at the top of described high-order moisturizing exhaust water tank;
The top side wall of described high-order moisturizing exhaust water tank is provided with the through hole for exhaust.
5. according to claim 1 or 4 described accurate closed circulation pipe network Water quality comprehensive simulation test systems, it is characterized in that the casing of described high-order moisturizing exhaust water tank is cylindrical.
6. accurate closed circulation pipe network Water quality comprehensive simulation test system according to claim 1, it is characterized in that, the water delivering orifice of described high-order moisturizing exhaust water tank is positioned at the bottom of high-order moisturizing exhaust water tank, and the water inlet of described high-order moisturizing exhaust water tank is higher than the water delivering orifice of high-order moisturizing exhaust water tank and is lower than high-order moisturizing exhaust water tank case Senior Two/one position.
7. accurate closed circulation pipe network Water quality comprehensive simulation test system according to claim 1 is characterized in that, the material of the pipeline that described independent loops pipe network subsystem is a plurality of and a plurality of independent loops pipe network subsystems is identical or different;
The pipeline of described independent loops pipe network subsystem is ductile iron pipe, polyethylene pipe, copper pipe or stainless-steel tube.
8. accurate closed circulation pipe network Water quality comprehensive simulation test system according to claim 1 is characterized in that, described water quality monitoring system can not be comprised of by the circulating line branch road water quality monitoring circulating line branch road and water quality monitoring;
Described water quality monitoring circulating line branch road comprises conductivity meter, pH instrument and the dissolved oxygen tester of three's parallel connection, the two ends of described water quality monitoring circulating line branch road respectively with the pipeline communication of independent loops pipe network subsystem;
Described water quality monitoring can not the circulating line branch road comprises residual chlorine detecting instrument, turbidity detector and the granule content detector of three's parallel connection, described water quality monitoring can not the circulating line branch road an end and the pipeline communication of independent loops pipe network subsystem, other end access trench.
9. accurate closed circulation pipe network Water quality comprehensive simulation test system according to claim 1, it is characterized in that, be connected with the medicament loading system on the pipeline of described independent loops pipe network subsystem, described medicament loading system comprises medicament filling tank and the medicament dispenser pump of series connection.
10. accurate closed circulation pipe network Water quality comprehensive simulation test system according to claim 1 is characterized in that the bottom surface of described main circulation pump is positioned at the floor level face of accurate closed circulation pipe network Water quality comprehensive simulation test system; The pipeline of described independent loops pipe network subsystem is provided with the outlet that is used for artificial water intaking sampling with the second valve.
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| CN102636329A (en) * | 2012-04-25 | 2012-08-15 | 哈尔滨工业大学 | Device for simulating operating conditions of water supply network |
| CN105092808B (en) * | 2015-08-24 | 2016-09-28 | 河海大学 | Long-distance Pipeline for Water Conveyance analog |
| CN106896019A (en) * | 2015-12-17 | 2017-06-27 | 中国科学院金属研究所 | A kind of stress corrosion (cracking) test circulation loop exhaust apparatus and its application method |
| CN106124397B (en) * | 2016-08-29 | 2018-09-07 | 黄雨辰 | A kind of test method of oilfield sewage corrosion and scaling characteristic |
| CN107179263A (en) * | 2017-05-26 | 2017-09-19 | 南京大学 | Puddle influences on Contaminants Transport in a kind of simulation pipeline device and method of work |
| CN109138054B (en) * | 2018-10-23 | 2024-02-06 | 内蒙古融通水务有限责任公司 | Direct drinking water pipe network flushing and sterilizing mobile equipment |
| CN109738036B (en) * | 2019-01-08 | 2020-11-20 | 哈尔滨工业大学（深圳） | Automatic volume-dividing rainwater runoff detection and sampling device |
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| US6405580B2 (en) * | 2000-05-08 | 2002-06-18 | The United States Of America As Represented By The Secretary Of The Navy | Apparatus for detecting and measuring foam forming compounds in aqueous solutions |
| US6840093B2 (en) * | 2002-04-05 | 2005-01-11 | Caterpillar Inc. | System and method for determining oil grade |
| JP2004309029A (en) * | 2003-04-08 | 2004-11-04 | Matsushita Electric Ind Co Ltd | Refrigerating cycle device |
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| CN201731612U (en) * | 2010-05-25 | 2011-02-02 | 无锡利邦厨具有限公司 | Full automatic boiling water supply system |
| CN201722242U (en) * | 2010-06-23 | 2011-01-26 | 浙江大学 | Rural drinking water treatment equipment with reverse osmosis equipment and ultrafiltration equipment connected in parallel |
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| CN201836651U (en) * | 2010-09-27 | 2011-05-18 | 河南理工大学 | Water make-up and constant pressure system for multi-heat source ring-shaped heating pipe network |
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| CN202082621U (en) * | 2011-05-19 | 2011-12-21 | 浙江大学 | Quasi-closed circulation pipe network water quality comprehensive simulation test system |
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Address after: 310027 Hangzhou, Zhejiang Province, Xihu District, Zhejiang Road, No. 38, No. Patentee after: Zhejiang University Patentee after: THE ARCHITECTURAL DESIGN & RESEARCH INSTITUTE OF ZHEJIANG UNIVERSITY CO., LTD. Address before: 310027 Hangzhou, Zhejiang Province, Xihu District, Zhejiang Road, No. 38, No. Patentee before: Zhejiang University Patentee before: Architectural Design and Research Institute of Zhejiang University |