Pipeline water quality stability research device capable of realizing multi-water quality grading and collaborative water supply

Abstract

The utility model relates to a pipeline water quality stability research device capable of realizing multi-water quality grading and collaborative water supply. The pipeline water quality stability research device comprises a high-level water distribution water tank positioned in a water pre-distribution area, an experimental pipeline positioned in an experimental operation area, and a water quality mixing water tank which exists in the water pre-distribution area and the experimental operation area, a lifting pump is arranged at the top of the high-level water distribution tank, a stirrer is arranged in the high-level water distribution tank, and a metering pump and a control valve are arranged at a bottom water outlet Every two adjacent lifting pumps are connected to the same water pre-distribution area tee joint, and every two adjacent control valves are connected to the same water pre-distribution area four-way joint; the pre-water-distribution area tee joint is connected with the pre-water-distribution area four-way joint, the pre-water-distribution area four-way joint is connected to the combined water tank, the combined water tank is connected with the experimental operation area water outlet tee joint and the combined water tank lifting pump, and the combined water tank lifting pump is connected with the experimental operation area water return tee joint and then connected with the experimental operation area water outlet tee joint and the experimental pipeline; a water pump is arranged between the experiment pipeline and the experiment operation area water outlet tee joint. The water quality stability experiment can be carried out, and the safety risk of mixed water quality can be evaluated.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing various water qualities and water bodies and desalinated water quality adjustment, and in particular to a pipeline water quality stabilization research device capable of realizing multi-water quality separation and coordinated water supply. Background Art

[0002] The drinking water sources of some cities in my country are relatively complex, and they face the coordinated mixing or alternating switching of multiple surface or groundwater sources every year. In recent years, with the continuous improvement of seawater desalination technology, desalinated water has gradually been included in the scope of urban water supply. When switching surface water or groundwater every year, the urban pipeline network has faced the disturbance of different water quality water bodies to the original water body.

[0003] However, when low-alkalinity, low-hardness desalinated water directly enters a high-alkalinity, high-hardness tap water supply network, or enters a multi-source water production and coordinated water supply network, it will destroy the stability of the existing pipeline inner wall interface microstructure and cause "red water" and "yellow water" phenomena, directly affecting the quality of drinking water, while also affecting the service life of the water supply pipeline and increasing corporate cost investment.

[0004] The stability of water quality depends on the interaction between the transported water and the pipe wall state. The combination of water bodies corresponding to different dominant factors ultimately determines the water quality characteristics of complex mixed water bodies and the transmission law of pipeline erosion. It can be seen that in order to accurately and comprehensively reveal the impact of mixed water on the stability of pipe network water quality, it is necessary to conduct systematic research and evaluation on mixed water quality, mixed water ratio, pipe network wall characteristics, etc. At present, the introduction of desalinated water into the water distribution system at home and abroad mainly focuses on mineral conditioning. The cost of direct mineral conditioning of desalinated water is relatively high. The low-cost conditioning method of mixing desalinated water with tap water has become a new way of replenishing tap water systems with desalinated water in recent years.

[0005] However, current research has only focused on static pipes or experimental pipes that are only equipped with agitators and placed vertically. This does not conform to the hydraulic environment of actual horizontally placed pipes and fails to truly reflect the stability of water quality after the pipes are disturbed by changing water quality. The water quality stability experimental device for blending and debugging mineralized / non-mineralized desalinated water and tap water from multiple water sources is still in the stage of urgent development. The development of new water sources needs to bring about an improvement in "quality", so it is even more necessary to design a research device that can simulate the actual flow of mixed water in the pipeline, in order to ensure the stability of the water quality of the pipeline network and promote the construction of new quality productivity in the water supply field. Summary of the invention

[0006] The utility model addresses the research deficiencies in the field of water supply quality and water supply pipelines, and provides a pipeline water quality stability research device that can achieve multi-water quality separation and coordinated water supply to solve the technical problems existing in the prior art. It aims to optimize the water supply structure and expand the application scenarios of seawater desalination.

[0007] The utility model includes the following technical solutions: a pipeline water quality stability research device capable of realizing multi-water quality separation and coordinated water supply, comprising a high-level water distribution tank arranged in a pre-water distribution area, an experimental pipeline arranged in an experimental operation area, and a mixed-quality water tank coexisting in the pre-water distribution area and the experimental operation area; the number of the high-level water distribution tanks is not less than two, a lifting pump is provided on the top of the high-level water distribution tank, an agitator is provided inside, and a metering pump and a control valve are provided at the bottom drain outlet; two adjacent lifting pumps are connected to the same pre-water distribution area tee through a pipeline, and two adjacent control valves are connected through a pipeline Connected to the same pre-water distribution area four-way; the pre-water distribution area three-way is connected to the pre-water distribution area four-way by a pipe, and a pre-water distribution area outlet valve is arranged under the pre-water distribution area four-way; the pre-water distribution area outlet valve is connected to the combined water tank, the side of the combined water tank is connected to the experimental operation area water outlet tee, the top of the combined water tank return port is connected to the combined water tank lifting pump, the combined water tank lifting pump is connected to the experimental operation area return tee, and the other two ends of the experimental operation area return tee are respectively connected to the experimental operation area water outlet tee and the experimental pipeline; a water pump is also arranged between the experimental pipeline and the experimental operation area water outlet tee.

[0008] Furthermore, according to the actual requirements for the type of water to be mixed, a high-level water tank is added in the pre-distribution water area and a lifting pump, a metering pump and a control valve connected thereto are provided; the additional water tanks are arranged in groups of two or individually, and the corresponding pre-distribution water area outlet valves are configured in groups, and are connected to the mixed water tank through pipes.

[0009] The functional properties of the high-level water tank will be determined by the water quality properties of the water distribution, and the equipment scale can be adjusted according to the specific experimental needs. The high-level water tank can provide potential energy for the water in the water tank through its high water level advantage, so that the water in the pre-distribution area can flow into the combined water tank without the kinetic energy of the water pump. Compared with the low-level water tank, this design can save the electricity generated by the pump, and at the same time provide a variety of water supply methods for the water in the pre-distribution area to flow into the combined water tank.

[0010] Furthermore, the high-level water distribution tank includes a desalinated water high-level water distribution tank and a tap water high-level water distribution tank. The desalinated water high-level water distribution tank is provided with a desalinated water lifting pump on the top, a desalinated water tank agitator inside, and a desalinated water metering pump, a desalinated water control valve and a desalinated water tank drain outlet at the bottom. The tap water high-level water distribution tank is provided with a tap water lifting pump on the top, a tap water tank agitator inside, and a tap water metering pump, a tap water control valve and a tap water tank drain outlet at the bottom.

[0011] When in use, the desalinated water high-level distribution tank and the tap water high-level distribution tank are configured with two water bodies according to the water bodies required for the experiment. The configured desalinated water and tap water are quantitatively and qualitatively discharged through the desalinated water metering pump and the desalinated water metering pump in turn, and then flow into the combined water tank through the pre-distribution area four-way and the pre-distribution area outlet valve. The mixed water body is mechanically or hydraulically stirred in the combined water tank and then lifted by a water pump into the experimental pipeline.

[0012] Furthermore, the desalinated water lifting pump, tap water lifting pump and water pump are all small silent constant temperature variable frequency pumps, which can provide ten water flow speeds for the experiment, so that the present invention can examine the water quality stability of the multi-water quality experimental water body in the experimental pipeline according to the gradient flow rate. At the same time, the constant temperature variable frequency pump will not heat up due to the operation of the water pump, so it will not affect the temperature of the experimental water body. The water pump is connected to the water pump controller, the water pump controller plug and the timeable plug in sequence through wires.

[0013] Furthermore, a carbon dioxide generator is installed on the top of the desalinated water high-level distribution water tank to facilitate the introduction of CO into the desalinated water during the mineralization and conditioning process. 2 .

[0014] Furthermore, both ends of the experimental pipeline are connected to transparent acrylic observation tubes through flanges, namely, transparent observation tubes at the water inlet and water outlet, which are helpful for observing the fullness, color, turbidity, etc. of the water flowing through the pipeline. The experimental pipeline is 1m long and 100mm-150mm in diameter. The pipe material can be replaced according to experimental needs, including but not limited to ductile iron pipes with cement mortar lining, gray cast iron pipes with corrosion scale, ductile iron pipes with epoxy resin lining, PVC-O pipes, PVC-U pipes, PE pipes, etc.

[0015] Furthermore, the outside of the experimental pipeline is provided with an experimental pipeline insulation layer and an experimental pipeline heating pipe made of polyurethane material, which can respectively achieve the temperature control and heating effects of the experimental pipeline. In addition, compared with the commonly used internal heating, the external heating of the experimental device can avoid the impact of the corrosion of the internal heating pipe on the water body of the experimental pipeline. The experimental pipeline heating pipe is equipped with a heater control switch, and the heater control switch is connected to a timing switch pin, which can effectively achieve the effect of timed heating of the experimental pipeline. The experimental pipeline is also equipped with an experimental pipeline electronic thermometer, which can monitor the temperature of the experimental pipeline in real time; a float flowmeter and an experimental pipeline water inlet control valve are provided between the water pump and the experimental pipeline, and an electronic flowmeter and an experimental pipeline butterfly valve are provided between the return water tee of the experimental operation area and the experimental pipeline.

[0016] Furthermore, the top of the composite water tank is provided with a composite water tank dosing port, a composite water tank return port and a composite water tank electronic thermometer, which are protruding from the top of the water tank and extending under the water tank cover; a composite water tank agitator is provided inside the composite water tank, and a composite water tank insulation layer and a composite water tank heater are provided on the outer surface; a composite water tank heater control switch is provided on the composite water tank heater, and the composite water tank heater control switch is connected to a composite water tank heater timing switch plug, which can achieve the effect of timed heating and constant temperature of the composite water tank. The configured medicines can be conveniently introduced into the composite water tank through the composite water tank dosing port.

[0017] Furthermore, the composite water tank is made of stainless steel, which has good thermal conductivity. The composite water tank heater is arranged on the outer layer of the composite water tank, and the heat of the outer layer can be quickly transferred into the water inside the water tank through the metal material of the composite water tank, and the heating is stopped when the water temperature in the composite water tank reaches the set value.

[0018] Furthermore, a combined water tank inlet control valve is provided at the front end of the combined water tank inlet on the front side of the combined water tank, and the combined water tank outlet on the rear side of the combined water tank is connected to the water outlet tee of the experimental operation area; a combined water tank drain outlet is provided on the bottom surface of the combined water tank.

[0019] The utility model has the following advantages and positive effects:

[0020] 1. The utility model can be equipped with multiple high-level water tanks, which can be filled with and configured with a variety of water sources as needed, and the equipment scale can be adjusted according to specific experimental needs.

[0021] 2. The desalinated water high-level distribution tank, tap water high-level distribution tank and mixed water tank adopted in the utility model all have two homogenization modes: mechanical stirring and hydraulic stirring. The dual stirring modes complement each other and serve as backup for each other. A backup mode can be provided when one homogenization mode fails. At the same time, a dual homogenization mode can also be provided. The coordinated operation of the two modes will make the water homogenization more in-depth, and can effectively realize the homogenization of medicines and experimental water bodies, and mixed experimental water bodies.

[0022] The first two can achieve hydraulic mixing by adjusting the opening direction of the pre-distribution area tee and the pre-distribution area four-way; after the experimental water in the desalinated water high-level distribution tank flows out to the desalinated water metering pump, it is lifted by the desalinated water lifting pump, and returns to the desalinated water high-level distribution tank through the desalinated water control valve, the pre-distribution area four-way, the pre-distribution area tee, and the desalinated water lifting pump to complete the hydraulic mixing of the desalinated water; after the experimental water in the tap water high-level distribution tank flows out to the tap water metering pump, it is lifted by the tap water lifting pump, and returns to the tap water high-level distribution tank through the tap water control valve, the pre-distribution area four-way, the pre-distribution area tee, and the tap water lifting pump to complete the hydraulic mixing of the tap water. The combined water tank can achieve three circulation modes by adjusting the opening direction of the experimental operation area outlet tee and the experimental operation area return tee, and is applicable to more experimental operations.

[0023] 3. The utility model has two homogenizing methods, mechanical stirring and hydraulic stirring. It can not only realize the conditioning of drugs (mineralization) in one set of equipment, but also realize the mixing and conditioning and quantitative distribution into the mixed water tank. The simulation effect is better and can ensure that the experimental water body flows in a way that conforms to the actual hydraulic conditions.

[0024] 4. The utility model adopts an external heating design between the experimental pipeline and the mixed water tank. Compared with the commonly used internal heating, it can effectively avoid the impact of corrosion of the internal heating pipe on the water quality of the experimental pipeline; at the same time, it is equipped with temperature control and temperature measuring devices to effectively ensure temperature control during the experiment.

[0025] 5. Compared with other devices that can only detect one type of pipe, the two ends of the experimental pipeline of this device are connected by flanges, and different pipes can be replaced according to experimental needs. It has the advantages of saving experimental device consumables, saving experimental funds, and facilitating the extraction of "solid phase" sediments attached to the pipe wall; the front and rear ends of the experimental pipeline are equipped with transparent observation tubes, and the water intake is configured on the rear side of the pipeline, which can realize real-time observation of water phase pollutants. Through water quality calculation and evaluation, the disturbance of the mixed water body on the experimental pipeline can be obtained, and the safety risk of the mixed water quality can be effectively evaluated.

[0026] 6. Compared with the commonly used variable frequency pumps on the market, the water pump configured in this experiment is a small silent constant temperature variable frequency pump. The water pump temperature is constant during use and will not affect the temperature of the experimental water body. The variable frequency pump can provide ten levels of water flow speed for the experiment, so that the present invention can examine the influence of multi-water quality experimental water bodies on the water quality stability of the experimental pipeline according to the gradient flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 It is a schematic diagram of the enlarged structure of the experimental pipeline;

[0029] Figure 3 yes Figure 2 Schematic cross-section of the experimental pipeline;

[0030] Figure 4 It is an enlarged schematic diagram of the structure of the combined water tank;

[0031] Figure 5 yes Figure 4 A cross-sectional diagram of a medium-quality water tank;

[0032] Figure 6 It is a schematic diagram of the supplementary high-level water tank and connection method in the pre-distribution area;

[0033] In the figure, the pre-water distribution area is I and the experimental operation area is II;

[0034] 1 is the desalinated water high-level distribution tank; 1-1 is the desalinated water tank agitator; 1-2 is the desalinated water tank drain port; 1-3 is the desalinated water metering pump; 1-4 is the desalinated water control valve; 1-5 is the desalinated water lifting pump; 1-6 is the desalinated water dosing port;

[0035] 2 is the tap water high-level distribution tank; 2-1 is the tap water tank agitator; 2-2 is the tap water tank drain outlet; 2-3 is the tap water metering pump; 2-4 is the tap water control valve; 2-5 is the tap water lifting pump; 2-6 is the tap water dosing port;

[0036] 3 is a carbon dioxide generator; 4 is a tee for the pre-distribution water area; 5 is a cross for the pre-distribution water area; 6 is a water outlet valve for the pre-distribution water area;

[0037] 7-composite water tank; 7-1 is the agitator of the composite water tank; 7-2 is the dosing port of the composite water tank; 7-3 is the water inlet of the composite water tank; 7-4 is the water return port of the composite water tank; 7-5 is the water outlet of the composite water tank; 7-6 is the drain port of the composite water tank; 7-7 is the electronic thermometer of the composite water tank; 7-8 is the insulation layer of the composite water tank; 7-9 is the heater of the composite water tank; 7-10 is the control switch of the heater of the composite water tank; 7-11 is the timing switch pin of the heater of the composite water tank; 7-12 is the control valve of the water inlet end of the composite water tank;

[0038] 8 is the outlet tee of the experimental operation area; 9 is the return tee of the experimental operation area;

[0039] 10-water pump; 10-1 is a water pump controller; 10-2 is a water pump controller plug; 10-3 is a timer plug; 11 is a float flowmeter; 12 is a water inlet control valve for the experimental pipeline;

[0040] 13-1 is a transparent observation tube at the water inlet end; 13-2 is a transparent observation tube at the water outlet end;

[0041] 14 is the experimental pipeline; 14-1 is the experimental pipeline insulation layer; 14-2 is the experimental pipeline heating pipe; 14-3 is the experimental pipeline electronic thermometer; 14-4 is the heater control switch; 14-5 is the timing switch pin;

[0042] 15 is the drain port of the experimental pipeline; 16 is the butterfly valve of the experimental pipeline; 17 is the electronic flow meter; 18 is the lifting pump of the mixed water tank;

[0043] N is the first group of high-level water tanks; N+1 is the second group of high-level water tanks; N+2 is the third group of high-level water tanks; N+n represents the nth high-level water tank that can be added. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in this embodiment to clearly and completely describe the technical solution. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this utility model.

[0045] Example: See attached Figure 1-6 , a pipeline water quality stability research device capable of realizing multi-water quality separation and coordinated water supply, comprising a high-level water distribution tank arranged in a pre-water distribution area I, a mixed quality water tank 7 and an experimental pipeline 14 arranged in an experimental operation area II; the high-level water distribution tank comprises a desalinated water high-level water distribution tank 1 and a tap water high-level water distribution tank 2, the desalinated water high-level water distribution tank 1 is provided with a desalinated water lifting pump 1-5 on the top, a desalinated water tank agitator 1-1 inside, a desalinated water metering pump 1-3 and a desalinated water control valve 1-4 connected at the bottom, and a desalinated water tank drain port 1-2, the desalinated water high-level water distribution tank 1 is also provided with a carbon dioxide generator 3 on the top, so that the desalinated water is introduced into CO during mineralization conditioning 2The tap water high-level distribution water tank 2 is provided with a tap water lifting pump 2-5 on the top, a tap water tank agitator 2-1 inside, a tap water metering pump 2-3 and a tap water control valve 2-4 connected to the bottom and a tap water tank drain outlet 2-2; the desalinated water lifting pump 1-5 and the tap water lifting pump 2-5 are connected to the pre-distribution area tee 4 through a pipeline, and the desalinated water control valve 1-4 and the tap water control valve 2-4 are connected to the pre-distribution area four-way 5 through a pipeline; the pre-distribution area three-way 4 and the pre-distribution area four-way 5 are connected by a pipeline Then, a pre-water distribution area outlet valve 6 is arranged below the pre-water distribution area four-way 5; the pre-water distribution area outlet valve 6 is connected to the composite water tank 7, the side of the composite water tank 7 is connected to the experimental operation area outlet tee 9, and the top composite water tank return water port 7-4 is connected to the composite water tank lifting pump 18, the composite water tank lifting pump 18 is connected to the experimental operation area return water tee 9, and the other two ends of the experimental operation area return water tee 9 are respectively connected to the experimental operation area outlet tee 8 and the experimental pipeline 14; a water pump 10 is also arranged between the experimental pipeline 14 and the experimental operation area outlet tee 8. A float flowmeter 11 and an experimental pipeline water inlet control valve 12 are arranged between the water pump 10 and the experimental pipeline 14, and an electronic flowmeter 17 and an experimental pipeline butterfly valve 16 are arranged between the experimental operation area return water tee 9 and the experimental pipeline 14.

[0046] When in use, the desalinated water high-level distribution tank 1 and the tap water high-level distribution tank 2 are configured with two kinds of water bodies according to the water bodies required for the experiment. The configured desalinated water and tap water are quantitatively separated and flowed out through the desalinated water metering pumps 1-5 and the desalinated water metering pumps 1-5 in turn, and then flow into the mixed water tank 7 through the pre-distribution area four-way 5 and the pre-distribution area outlet valve 6. The mixed water body is mechanically or hydraulically stirred in the mixed water tank 7 and then lifted by a water pump into the experimental pipeline 14.

[0047] The desalinated water lifting pump 1-5, tap water lifting pump 2-5, and water pump 10 are all small silent constant temperature variable frequency pumps, which can provide ten water flow speeds for the experiment, so that the present invention can examine the water quality stability of the multi-water quality experimental water body in the experimental pipeline 14 according to the gradient flow rate. At the same time, the constant temperature variable frequency pump will not heat up due to the operation of the water pump 10, so it will not affect the temperature of the experimental water body. The water pump 10 is connected to the water pump controller 10-1, the water pump controller plug 10-2 and the timeable plug 10-3 in sequence through wires.

[0048] like Figure 2-Figure 3As shown, the two ends of the experimental pipeline 14 are connected to transparent observation tubes made of acrylic material through flanges, namely the transparent observation tube 13-1 at the water inlet and the transparent observation tube 13-2 at the water outlet, which is helpful to observe the fullness, color, turbidity, etc. of the water flowing through the pipeline. The experimental pipeline 14 is 1m long and 100mm-150mm in diameter. The pipe material can be replaced according to the experimental needs, including but not limited to ductile iron pipes with cement mortar lining, gray cast iron pipes with corrosion scale, ductile iron pipes with epoxy resin lining, PVC-O pipes, PVC-U pipes, PE pipes, etc. The outside of the experimental pipeline 14 is provided with an experimental pipeline insulation layer 14-1 and an experimental pipeline heating pipe 14-2, which can respectively achieve the temperature control and heating effects of the experimental pipeline 14. The experimental pipeline insulation layer 14-1 is made of polyurethane material. In addition, compared with the commonly used internal heating, the external heating of this experimental device can avoid the impact of the corrosion of the internal heating pipe on the water body of the experimental pipeline 14. The experimental pipeline heating pipe 14-2 is equipped with a heater control switch 14-4, and the heater control switch 14-4 is connected to a timing switch plug 14-5, which can achieve the effect of timing heating of the experimental pipeline 14. The experimental pipeline 14 is also equipped with an experimental pipeline electronic thermometer 14-3, which can monitor the temperature of the experimental pipeline 14 in real time.

[0049] like Figure 4-Figure 5 As shown, the top of the composite water tank 7 is provided with a composite water tank dosing port 7-2 protruding from the top of the water tank and extending under the water tank cover, a composite water tank return port 7-4 and a composite water tank electronic thermometer 7-7; the composite water tank 7 is provided with a composite water tank agitator 7-1 inside, a composite water tank insulation layer 7-8 and a composite water tank heater 7-9 on the outer surface, and a composite water tank heater control switch 7-10 is provided on the composite water tank heater 7-9, and the composite water tank heater control switch 7-10 is connected to the composite water tank heater timing switch plug 7-11, which can achieve the effect of timing heating and constant temperature of the composite water tank 7. The configured medicine can be conveniently introduced into the composite water tank 7 through the composite water tank dosing port 7-2. The composite water tank 7 is made of stainless steel metal, which has good thermal conductivity. The composite water tank heater 7-9 is arranged on the outer layer of the composite water tank 7. The heat of the outer layer can be quickly transferred into the water inside the water tank through the metal material of the composite water tank 7. When the temperature of the water inside the composite water tank 7 reaches the set value, the heating is stopped. A composite water tank inlet end control valve 7-12 is arranged at the front end of the composite water tank inlet 7-3 on the front side of the composite water tank 7. The composite water tank outlet 7-5 on the rear side of the composite water tank 7 is connected to the water outlet tee 8 of the experimental operation area. A composite water tank drain 7-6 is arranged on the bottom surface of the composite water tank 7.

[0050] The experimental operation area II has three circulation modes: circulation mode one, close the control valve 7-12 at the water inlet end of the combined water tank, when the water flowing out of the combined water tank 7 fills the experimental operation area II, the experimental water circulates in the experimental operation area II, the experimental water does not flow back to the combined water tank 7, and the water passes through the experimental operation area water outlet tee 8, water pump 10, float flowmeter 11, experimental pipeline water inlet control valve 12, water inlet end transparent observation tube 13-1, experimental pipeline 14, water outlet end transparent observation tube 13-2, electronic flowmeter 17 to the experimental operation area return water tee 9; circulation mode two: the experimental water circulates between the combined water tank 7 and the experimental pipeline 14, and the water is The water passes through the combined water tank 7, the experimental operation area water outlet tee 8, the water pump 10, the float flowmeter 11, the experimental pipeline water inlet control valve 12, the water inlet end transparent observation tube 13-1, the experimental pipeline 14, the water outlet end transparent observation tube 13-2, the electronic flowmeter 17, the experimental operation area return water tee 9, the combined water tank return port and finally returns to the combined water tank 7; Circulation mode three: the experimental water body is hydraulically circulated only in the combined water tank 7, which is suitable for the hydraulic circulation after adding medicine in the combined water tank 7. The water body passes through the combined water tank 7, the experimental operation area water outlet tee 8, the experimental operation area return water tee 9, the combined water tank lifting pump 18, the combined water tank return port 7-4 and finally returns to the combined water tank 7.

[0051] like Figure 6 As shown, no less than two high-level water tanks are arranged in the pre-water distribution area I. The high-level water tanks can provide potential energy for the water in the water tanks by virtue of their high water level advantage, so that the water in the pre-water distribution area I can flow into the mixed water tank 7 without the kinetic energy of the water pump 10. Compared with the low-water-level water tank, this design can save the electric energy generated by the pump, and at the same time provide a variety of water supply methods for the water in the pre-water distribution area I to flow into the mixed water tank 7. According to the actual requirements for the type of water to be mixed, high-level water tanks, corresponding mechanical stirring devices and hydraulic circulation devices can be added to the pre-water distribution area I; the additional water tanks are configured with pre-water distribution area outlet valves in groups of two or individually, and are connected to the mixed water tank 7 through pipes. Figure 6 As shown, N and N+1 are double water tanks in parallel in the same group, and N+2 is a single water tank in a single group. The functional properties of the high-level water tank will be determined by the water quality properties of the water distribution. The addition of multiple high-level water tanks is also one of the innovations of the present invention, and the equipment scale can be adjusted according to specific experimental requirements.

[0052] Working principle: according to the water required by the experiment, desalinated water and tap water experimental water are introduced into the desalinated water high-level distribution tank 1 and the tap water high-level distribution tank 2 respectively, and the experimental water is doped with drugs. The configured desalinated water and tap water experimental water are quantitatively separated by desalinated water metering pumps 1-3 and tap water metering pumps 2-3 respectively, and then enter the combined water tank 7 through the pre-distribution area four-way 5 and the pre-distribution area outlet valve 6 in turn; the mixed water entering the combined water tank 7 is mechanically or hydraulically stirred in the combined water tank 7 and then lifted by the water pump 10 into the experimental pipeline 14, and the flow state is compared and measured by the float flowmeter 11 and the electronic flowmeter 17, and the water circulation method is selected according to the experimental needs.

[0053] Desalinated water distribution method: Desalinated water mineralization conditioning methods mainly include "Ca(OH) 2 +CO 2 ”, “Ca(OH) 2 +Na 2 CO 3 ”, “CaSO 4 +NaHCO 3 ”, “CaCl 2 +NaHCO 3 "Four methods. The chemicals for each conditioning method are added from desalinated water dosing ports 1-6, CO 2 The gas is introduced through the carbon dioxide generator 3. After each drug / gas is introduced into the desalinated water high-level distribution water tank 1 in proportion, it can be stirred by mechanical stirring or hydraulic stirring, or the two methods are stirred in coordination. Among them, the hydraulic stirring method is: by adjusting the opening direction of the pre-distribution area tee 4 and the pre-distribution area four-way 5, the desalinated water flows out from the desalinated water high-level distribution water tank 1 to the desalinated water metering pump 1-3, and then is lifted by the desalinated water lifting pump 1-5, and flows back to the desalinated water high-level distribution water tank 1 through the desalinated water control valve 1-4, the pre-distribution area four-way 5, the pre-distribution area tee 4, and the desalinated water lifting pump 1-5.

[0054] Tap water distribution method: Tap water distribution may include mixing tap water from different water sources in proportion / passing it into the tap water high-level distribution tank 2 separately. After tap water from different water sources is passed into the tap water high-level distribution tank 2, a conditioning agent or disinfectant may be added according to the experimental requirements, and the experimental water body may be homogenized by mechanical stirring or hydraulic stirring, and the two methods of coordinated stirring. Among them, the hydraulic stirring method is: by adjusting the opening direction of the pre-distribution area tee 4 and the pre-distribution area four-way 5, the tap water flows out of the tap water high-level distribution tank 2 to the tap water metering pump 2-3, and then is lifted by the tap water lifting pump 2-5, and flows back to the tap water high-level distribution tank 2 through the tap water control valve 2-4, the pre-distribution area four-way 5, the pre-distribution area tee 4, and the tap water lifting pump 2-5.

[0055] Although the preferred embodiments of the utility model are described above, the utility model is not limited to the above specific embodiments, which are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can make many forms without departing from the purpose of the utility model and the scope of protection of the claims. All of these belong to the protection scope of the utility model.

Claims

1. A pipeline water quality stability research device capable of realizing multi-water quality classification and coordinated water supply, characterized in that: The invention comprises a high-position water distribution tank arranged in a pre-water distribution area (I), an experimental pipeline (14) arranged in an experimental operation area (II), and a mixed water tank (7) coexisting in the pre-water distribution area (I) and the experimental operation area (II); the number of the high-position water distribution tanks is not less than two, the top of the high-position water distribution tank is provided with a lifting pump, the inside is provided with a stirrer, the bottom is connected with a metering pump and a control valve, and a drainage port is provided; two adjacent lifting pumps are connected to the same pre-water distribution area tee (4) through a pipeline, and two adjacent control valves are connected to the same pre-water distribution area four-way (5) through a pipeline; the pre-water distribution area tee (4) and the pre-water distribution area four-way (5) are connected by a pipeline. The pre-water distribution area is connected through a pipeline, and a pre-water distribution area outlet valve (6) is arranged below the pre-water distribution area four-way (5); the pre-water distribution area outlet valve (6) is connected to the composite water tank (7); the composite water tank (7) is connected to the experimental operation area outlet tee (8) on the side, and the composite water tank return port (7-4) on the top is connected to the composite water tank lifting pump (18); the composite water tank lifting pump (18) is connected to the experimental operation area return tee (9); the other two ends of the experimental operation area return tee (9) are respectively connected to the experimental operation area outlet tee (8) and the experimental pipeline (14); a water pump (10) is also arranged between the experimental pipeline (14) and the experimental operation area outlet tee (8).

2. According to claim 1, a pipeline water quality stability research device capable of realizing multi-water quality classification and coordinated water supply is characterized by: According to the actual requirements for the type of water to be mixed, a high-level water tank is added in the pre-distribution water area (I) and a lifting pump, a metering pump and a control valve connected thereto are provided; the added water tanks are arranged in groups of two or individually with a pre-distribution water area outlet valve (6) and are connected to the mixed water tank (7) through a pipeline.

3. The pipeline water quality stability research device capable of realizing multi-water quality classification and coordinated water supply according to claim 2 is characterized by: The high-position water distribution tank comprises a desalinated water high-position water distribution tank (1) and a tap water high-position water distribution tank (2); the desalinated water high-position water distribution tank (1) is connected to a desalinated water lifting pump (1-5) at the top, is provided with a desalinated water tank agitator (1-1) inside, is connected to a desalinated water metering pump (1-3), a desalinated water control valve (1-4) and a desalinated water tank drain (1-2) at the bottom; the tap water high-position water distribution tank (2) is connected to a tap water lifting pump (2-5) at the top, is provided with a tap water tank agitator (2-1) inside, is connected to a tap water metering pump (2-3), a tap water control valve (2-4) and a tap water tank drain (2-2) at the bottom.

4. The pipeline water quality stability research device capable of realizing multi-water quality classification and coordinated water supply according to claim 3 is characterized by: The desalinated water lifting pump (1-5), the tap water lifting pump (2-5), and the water pump (10) are all small silent constant temperature variable frequency pumps; the water pump (10) is connected to a water pump controller (10-1), a water pump controller plug (10-2), and a timeable plug (10-3) in sequence through electric wires.

5. The pipeline water quality stability research device capable of realizing multi-water quality classification and coordinated water supply according to claim 4 is characterized by: A carbon dioxide generator (3) is also installed on the top of the desalinated water high-level distribution tank (1).

6. A pipeline water quality stability research device capable of realizing multi-water quality separation and coordinated water supply according to any one of claims 1 to 5, characterized in that: Both ends of the experimental pipeline (14) are connected to transparent observation tubes made of acrylic material through flanges.

7. The pipeline water quality stability research device capable of realizing multi-water quality classification and coordinated water supply according to claim 6, characterized in that: The experimental pipeline (14) is provided with an experimental pipeline insulation layer (14-1) made of polyurethane material and an experimental pipeline heating pipe (14-2) on the outside; the experimental pipeline heating pipe (14-2) is provided with a heater control switch (14-4), and the heater control switch (14-4) is connected to a timing switch plug (14-5); the experimental pipeline (14) is also provided with an experimental pipeline electronic thermometer (14-3); a float flowmeter (11) and an experimental pipeline water inlet control valve (12) are provided between the water pump (10) and the experimental pipeline (14); an electronic flowmeter (17) and an experimental pipeline butterfly valve (16) are provided between the experimental operation area return water tee (9) and the experimental pipeline (14).

8. A pipeline water quality stability research device capable of realizing multi-water quality separation and coordinated water supply according to any one of claims 1 to 5, characterized in that: The top of the composite water tank (7) is provided with a composite water tank dosing port (7-2) protruding from the top of the water tank and extending under the water tank cover, a composite water tank water return port (7-4) and a composite water tank electronic thermometer (7-7); the composite water tank (7) is provided with a composite water tank agitator (7-1) inside, a composite water tank insulation layer (7-8) and a composite water tank heater (7-9) on the outer surface, a composite water tank heater control switch (7-10) is provided on the composite water tank heater (7-9), and the composite water tank heater control switch (7-10) is connected to a composite water tank heater timing switch plug (7-11).

9. The pipeline water quality stability research device capable of realizing multi-water quality classification and coordinated water supply according to claim 8, characterized in that: The composite water tank (7) is made of stainless steel metal, and the composite water tank heater (7-9) is arranged on the outer layer of the composite water tank (7). The heat of the outer layer can be quickly conducted into the water body inside the water tank through the metal material of the composite water tank (7).

10. The pipeline water quality stability research device capable of realizing multiple water quality classification and coordinated water supply according to claim 8, characterized in that: A combined water tank inlet control valve (7-12) is provided at the front end of the combined water tank inlet (7-3) on the front side of the combined water tank (7); a combined water tank outlet (7-5) on the rear side of the combined water tank (7) is connected to a water outlet tee (8) in the experimental operation area; and a combined water tank drain outlet (7-6) is provided at the bottom of the combined water tank (7).

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