CN214200172U - Simulation test device of water supply pipe network multi-parameter measuring device - Google Patents
Simulation test device of water supply pipe network multi-parameter measuring device Download PDFInfo
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- CN214200172U CN214200172U CN202120011140.4U CN202120011140U CN214200172U CN 214200172 U CN214200172 U CN 214200172U CN 202120011140 U CN202120011140 U CN 202120011140U CN 214200172 U CN214200172 U CN 214200172U
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Abstract
The utility model discloses a water supply network multi-parameter measurement device's simulation test device, include: a water tank having a receiving space for receiving an aqueous solution; the circulating pipeline is used for installing and communicating a multi-parameter measuring device, and two ends of the circulating pipeline are respectively connected with the water tank and communicated with the accommodating space; the circulating water pump is arranged on the circulating pipeline and used for driving the water solution in the water tank to flow through the circulating pipeline; and the reagent adding device is arranged on the water tank and is used for adding the reagent into the accommodating space of the water tank. The utility model discloses can carry out the error detection to water supply network multi-parameter measuring device, in addition, the utility model is used for simulating the change of flow, turbidity and chlorine residue isoparametric of water supply network normal water, inspection water supply network multi-parameter measuring device's detectability, simulation testing arrangement has easily builds and operation, convenient characteristics of parameter control, can improve the efficiency of experiment test.
Description
Technical Field
The utility model relates to a multi-parameter measurement device technical field of running water especially relates to a water supply network multi-parameter measurement device's simulation testing arrangement.
Background
The urban water supply network is large in scale and complex in connection relation, and drinking water is possibly polluted by the inside and the outside of the water network in a long-time and long-distance conveying process to cause water quality deterioration. In addition, improper pressurization of the water supply network can cause excessive local pressure, which can also lead to pipe bursting and the inability of downstream users to obtain adequate water supply. Therefore, at present, the water supply company not only needs to accurately measure the water consumption of users, but also needs to closely monitor the water quality of the water supply and the change of the water pressure in the pipe network so as to ensure that the users are provided with high-quality water supply service.
With the development of water quality detection sensing technology, water quality parameters such as residual chlorine and turbidity can be measured on line together with conventional physical quantities such as flow and pressure, and a multi-parameter measuring device of a water supply network is formed.
The multi-parameter measuring device (multi-parameter water meter) of the water supply network is similar to other devices, and before the device is actually used, a large number of experimental tests are carried out to check whether various performance indexes of the device meet the design requirements. Because the multi-parameter measuring device relates to a plurality of sensors such as water quality, water quantity and water pressure, the change of parameters such as water quality, water quantity and water pressure in a water supply network can be truly simulated by a simulation test system aiming at the device, and the detection device in the prior art can not meet the requirement of qualified detection on the multi-parameter measuring device of the water supply network.
SUMMERY OF THE UTILITY MODEL
The utility model provides a water supply network multi-parameter measuring device's simulation testing arrangement, it can carry out the error detection to water supply network multi-parameter measuring device, in addition, the utility model is used for simulating the change of flow, turbidity and chlorine residue isoparametric of water supply network normal water, inspection water supply network multi-parameter measuring device's detectability, simulation testing arrangement has easily builds and operates, convenient characteristics of parameter control, can improve the efficiency of experiment test.
In order to solve the technical problem, the utility model provides a water supply network multi-parameter measurement device's simulation test device, include:
a water tank having a receiving space for receiving an aqueous solution;
the circulating pipeline is used for installing and communicating a multi-parameter measuring device, and two ends of the circulating pipeline are respectively connected with the water tank and communicated with the accommodating space;
the circulating water pump is arranged on the circulating pipeline and used for driving the water solution in the water tank to flow through the circulating pipeline;
and the reagent adding device is arranged on the water tank and is used for adding the reagent into the accommodating space of the water tank.
Preferably, the reagent adding device comprises a reagent box, a driving pump and a reagent conveying pipe, the reagent box is used for containing reagents, a first end of the reagent conveying pipe is communicated with the containing space of the water tank, a second end of the reagent conveying pipe is communicated with the reagent box, and the reagent conveying pipe is connected with the driving pump so that the reagents in the reagent box can enter the containing space of the water tank.
Preferably, the reagent conveying pipe comprises a hard pipe and a hose, the driving pump is a peristaltic pump, a first end of the hose is communicated with the reagent kit, a second section of the hose is communicated with the hard pipe, the hard pipe is connected with the water tank so that the hard pipe and the water tank are positioned oppositely, and an outlet end of the hard pipe extends into the accommodating space of the water tank and is far away from the inner wall of the water tank.
Preferably, the circulation pipeline is provided with an off-line comparison sampling port.
Preferably, the water tank is provided with a heating device.
Preferably, the water tank is provided with a liquid level meter along the height direction.
Preferably, as for the above technical solution, the circulation pipeline at least includes an output pipe and a return pipe, a first end of the output pipe is communicated with an outlet of the water tank, a second end of the output pipe is used for being communicated with an inlet of the multi-parameter measuring device, a first end of the return pipe is used for being communicated with an outlet of the multi-parameter measuring device, a second end of the return pipe is communicated with an inlet of the water tank, the circulation water pump is arranged on the output pipe and close to a joint of the output pipe and the water tank, a joint of the output pipe and the water tank is close to the bottom of the water tank, and a joint of the return pipe and the water tank is close to the top of the water tank.
Preferably, the reagent comprises at least: residual chlorine regulating reagent, turbidity regulating reagent, conductivity regulating reagent and pH value regulating reagent, the reagent feeding device at least comprises: the device comprises a first reagent adding device, a second reagent adding device, a third reagent adding device and a fourth reagent adding device, wherein the first reagent adding device is used for adding a residual chlorine regulating reagent, the second reagent adding device is used for adding a turbidity regulating reagent, the third reagent adding device is used for adding a conductivity regulating reagent, and the fourth reagent adding device is used for adding a pH value regulating reagent.
The utility model provides a water supply network multi-parameter measuring device's simulation test device, it has the water tank, circulating line, circulating water pump and add reagent device, multi-parameter measuring device inserts to circulating line, at work time let in the water tank with the clear water at first, then add reagent to the clear water of water tank in order to prepare various types of test solution through adding reagent device, this test solution is the running water of simulation in-service use water supply network, start circulating water pump after test solution preparation accomplishes and make test solution circulate in circulating line, the measured value of this test solution is surveyed by the multi-parameter measuring device who inserts circulating line in the process that test solution circulates, sample and off-line test the test solution in the water tank and obtain the actual measurement value of test solution, the measured value can obtain multi-parameter measuring device's error condition with the actual measurement value contrast, can carry out error detection to water supply network multi-parameter measuring device, in addition, the utility model is used for the change of the flow of simulation water supply network normal water, turbidity and chlorine residue isoparametric inspects water supply network multi-parameter measuring device's detectability, simulation test device has easily to build and operation, convenient characteristics of parameter control, can improve the efficiency of experimental test.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Fig. 1 is a schematic structural diagram of a simulation testing device of a multi-parameter measuring device of a water supply pipe network according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a simulation testing device of a multi-parameter measuring device of a water supply pipe network according to an embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating a simulation test method of a multi-parameter measuring device for a water supply pipe network according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a simulation test control system of a multi-parameter measuring device for a water supply pipe network according to an embodiment of the present invention;
in the figure: 10. a water tank; 20. a circulation pipe; 30. a water circulating pump; 40. a base support; 50. a master control console; 60. a second rotameter; 70. a branch pipe; 80. a first rotor flowmeter; 90. a pressure relief circuit; 100. a reagent adding device; 110. installing a limiting component; 120. an ultrasonic level gauge; 130. a water injection port; 140. a liquid level meter; 150. a water outlet; 160. off-line comparing the sampling ports; 170. a heating device; 200. a multi-parameter measuring device; 101. driving the pump; 102. a reagent delivery tube; 103. a kit; 104. a rigid tube; 105. a hose; 121. a support; 201. an output pipe; 202. a return pipe; 401. a water collection tank.
Detailed Description
To make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and fig. 2, the embodiment of the utility model provides a water supply pipe network multi-parameter measurement device's simulation testing arrangement is provided, include:
a water tank 10 having a receiving space for receiving an aqueous solution;
a circulation pipeline 20 for installing and communicating the multi-parameter measuring device 200, both ends of the circulation pipeline 20 being connected with the water tank 10 and communicating with the accommodating space, respectively;
a circulation water pump 30 disposed on the circulation pipe 20 for driving the aqueous solution in the water tank 10 to flow through the circulation pipe 20;
the reagent adding device 100 is provided in the water tank 10 and adds a reagent into the accommodating space of the water tank 10.
The simulation test device for the water supply network multi-parameter measurement device provided by the embodiment comprises a water tank 10, a circulation pipeline 20, a circulation water pump 30 and a reagent adding device 100, wherein the multi-parameter measurement device 200 is connected to the circulation pipeline 20, when the simulation test device works, clear water is firstly introduced into the water tank, then the circulation water pump 30 is started to enable the water to circulate in the circulation pipeline 20, finally a reagent is added into the clear water of the water tank through the reagent adding device 100 to prepare various types of test solutions, the test solutions are tap water simulating the water supply network in the actual use process, the circulation water pump 30 is started to enable the test solutions to circulate in the circulation pipeline 20 after the preparation of the test solutions is completed, the multi-parameter measurement device 200 connected to the circulation pipeline 20 is used for measuring the measurement values of the test solutions in the circulation process of the test solutions, the test solutions in the water tank are sampled and are tested off line to obtain the actual measurement values of the test solutions, the measured value can obtain multi-parameter measurement device 200's error condition with the actual measurement value contrast, and in addition, the change of parameter such as the flow of water supply network normal water, turbidity and chlorine residue still can be used to the simulation testing arrangement of this embodiment multi-parameter measurement device of water supply network, inspects water supply network multi-parameter measurement device's detectability, and simulation testing arrangement has easily to build and operate, convenient characteristics of parameter control, can improve the efficiency of experimental test.
In a further implementation manner of this embodiment, the reagent adding device 100 includes a reagent cartridge 103, a driving pump 101, and a reagent delivery pipe 102, the reagent cartridge 103 is used for accommodating a reagent, a first end of the reagent delivery pipe 102 is communicated with the accommodating space of the water tank 10, a second end of the reagent delivery pipe 102 is communicated with the reagent cartridge 103, and the reagent delivery pipe 102 is connected with the driving pump 101 so that the reagent in the reagent cartridge 103 can enter the accommodating space of the water tank 10.
The reagent adding device 100 in the embodiment has a simple structure, works more stably, and can automatically realize the addition of reagents.
In a further embodiment of this embodiment, the reagent delivery tube 100 includes a rigid tube 104 and a flexible tube 105, the driving pump 101 is a peristaltic pump, a first end of the flexible tube 105 is communicated with the reagent cartridge 103, a second end of the flexible tube 105 is communicated with the rigid tube 104, the rigid tube 104 is connected with the water tank 10 so that the rigid tube 104 is positioned opposite to the water tank 10, and an outlet end of the rigid tube 104 extends into the accommodating space of the water tank 10 and is far away from the inner wall of the water tank 10.
The driving pump 101 in this embodiment is a peristaltic pump, so that the reagent can be more accurately and stably conveyed, and it is also convenient to control, the reagent conveying pipe 100 in this embodiment includes a hard pipe 104 and a hose 105, the hose 105 is convenient to cooperate with the peristaltic pump, in addition, the installation and replacement are convenient, the cost is reduced, especially, the hard pipe 104 in this embodiment is connected with the water tank 10 so that the hard pipe 104 and the water tank 10 are relatively positioned, so that the whole reagent conveying pipe 100 can be more conveniently installed, furthermore, the outlet end of the hard pipe 104 in this embodiment extends into the accommodating space of the water tank 10 and is far away from the inner wall of the water tank 10, so the reagent can directly drip into the water tank 10 from the inlet end of the hard pipe, and the reagent is prevented from slipping down along the inner wall of the water tank 10 so that the inner wall of the water tank 10 is stained with the reagent and the accuracy of the aqueous solution is affected.
In addition, the reagent box 103 and the reagent conveying pipe 102 in the embodiment are detachably connected, so that the reagent box 103 can be conveniently cleaned and the reagent can be conveniently added, and the reagent box 103 can be made of a non-light-transmitting material, so that the storage stability of the reagent is improved, and the reagent is prevented from photolysis under illumination.
In a further embodiment of this embodiment, the circulation pipeline 20 is provided with an off-line contrast sampling port 160.
In this embodiment, an off-line contrast sampling port 160 is disposed on the circulation pipeline 20 to facilitate sampling of the aqueous solution to be tested.
In a further embodiment of the present embodiment, a heating device 170 is disposed on the water tank 10.
The water tank 10 of the present embodiment is provided with a heating device 170 to heat the water solution in the water tank 10 according to the requirement.
Specifically, the heating device 170 in this embodiment is a heating electrode disposed on the water tank 10.
In a further possible embodiment of the present embodiment, a level gauge 140 is arranged on the tank 10 and along the height direction thereof.
The fluid level gauge 140 in this embodiment may facilitate an operator's observation of the fluid level in the tank 10.
In a further implementation manner of this embodiment, the circulation pipeline 20 at least includes an output pipe 201 and a return pipe 202, a first end of the output pipe 201 is communicated with an outlet of the water tank 10, a second end of the output pipe 201 is used for being communicated with an inlet of the multi-parameter measuring device 200, a first end of the return pipe 202 is used for being communicated with an outlet of the multi-parameter measuring device 200, a second end of the return pipe 202 is communicated with an inlet of the water tank 10, the circulation water pump 30 is disposed on the output pipe 201 and near a connection position of the output pipe 201 and the water tank 10, a connection position of the output pipe 201 and the water tank 10 is near a bottom of the water tank 10, and a connection position of the return pipe 202 and the water tank 10 is near a top of the water tank 10.
The connection between the output pipe 201 and the water tank 10 in this embodiment is close to the bottom of the water tank 10, the connection between the return pipe 202 and the water tank 10 is close to the top of the water tank 10, and the return pipe 202 has a certain inclination angle to the water tank 10, so that the residue of the solution in the circulation pipeline 20 after the work is completed can be reduced, the mixing of a new aqueous solution and the residual aqueous solution in the circulation pipeline 20 in the next test process can be prevented, and the test accuracy can be improved.
In addition, the output pipe 201 in this embodiment is provided with a manual butterfly valve, which is close to the circulating water pump 30, so that the circulating pipeline 20 can be conveniently intercepted and maintained when the circulating pipeline fails.
In addition, the output pipe 201 in this embodiment is further provided with a pressure relief circuit 90, the pressure relief circuit 90 is provided with a pressure relief control valve, and the pressure relief circuit 90 can control the pressure of the circulation pipeline 20, specifically, the pressure relief control valve is opened at a certain angle at ordinary times to prevent the water pump from being damaged due to excessive pressure at the outlet of the circulation water pump 30 when water in the circulation pipeline 20 connected to the outlet of the circulation water pump 30 cannot flow. Further, it is also possible to act to regulate the pressure of the circulation duct 20 by changing the opening and closing degree of the pressure relief control valve.
In a further embodiment of this embodiment, the simulation testing apparatus further includes a base frame 40, the second end of the output pipe 201 is fixedly disposed on the base frame 40, and the first end of the return pipe 202 is fixedly disposed on the base frame 40.
In addition, a water collecting tank 401 is arranged on the base bracket 40 and used for collecting possible water leakage at the joint of the multi-parameter measuring device 200 and water overflowing when experimenters take water at the off-line contrast sampling port.
In this embodiment, the second end of the output pipe 201 and the first end of the return pipe 202 are fixedly disposed on the base bracket 40 and fixed to the base bracket 40, and the base bracket 40 plays a supporting role to prevent the weight of the multi-parameter measuring device 200 from concentrating on the joint of the pipe after being mounted on the circulation pipe 20, thereby preventing the multi-parameter measuring device 200 from causing an excessive load on the circulation pipe 20.
In a further embodiment of this embodiment, the reagents comprise at least: residual chlorine regulating reagent, turbidity regulating reagent, conductivity regulating reagent and pH value regulating reagent, and reagent adding device 100 at least includes: the device comprises a first reagent adding device, a second reagent adding device, a third reagent adding device and a fourth reagent adding device, wherein the first reagent adding device is used for adding a residual chlorine regulating reagent, the second reagent adding device is used for adding a turbidity regulating reagent, the third reagent adding device is used for adding a conductivity regulating reagent, and the fourth reagent adding device is used for adding a pH value regulating reagent.
The residual chlorine adjusting reagent in this embodiment may be a reagent containing chlorine, such as hypochlorous acid solution, sodium hypochlorite solution, or 84 disinfectant, and may be mixed with clean water to obtain a residual chlorine aqueous solution simulating tap water containing residual chlorine in the water supply network, while the conductivity adjusting reagent may be potassium chloride solution, which may be mixed with clean water to simulate tap water with a certain conductivity in the water supply network, the turbidity adjusting reagent may be a suspended particulate matter solution, such as a reagent containing silt, and the like, and in addition, it may also be formalin solution, where the suspended particulate matter of the formalin solution is more stable, which may be combined with clean water to simulate turbid tap water in the water supply network, the pH adjusting reagent may be an acidic pH adjusting reagent and an alkaline pH adjusting reagent, the acidic pH adjusting reagent may be dilute hydrochloric acid solution, vinegar, or the like, the alkaline pH adjusting reagent may be dilute sodium bicarbonate solution, or the like, it can be mixed with fresh water to simulate acidic or alkaline tap water in a water supply network.
In this embodiment, the reagent kit 103 of each reagent adding device contains the corresponding reagent, and it can complete the separate addition of each reagent, or can perform the mixed addition, so it can simulate the tap water condition in various water supply networks, and test the error condition of the multi-parameter measuring device 200 under various working environments and working conditions.
In a specific experiment process, when the pH value of water is less than 7 and the pH value needs to be adjusted to be more than 7, if the reagent kit of the fourth reagent adding device currently contains the acidic pH value adjusting reagent, the reagent kit containing the acidic pH value adjusting reagent needs to be taken down and replaced by the reagent kit containing the alkaline pH value adjusting reagent, and when the pH value of water is greater than 7 and the pH value needs to be adjusted to be less than 7, if the reagent kit of the fourth reagent adding device currently contains the alkaline pH value adjusting reagent, the reagent kit containing the alkaline pH value adjusting reagent needs to be taken down and replaced by the reagent kit containing the acidic pH value adjusting reagent.
In a further possible embodiment of the present embodiment, a rotameter is arranged on the circulation conduit 20.
The arrangement of the rotameter on the circulating pipeline 20 in this embodiment can facilitate the flow control of the circulating pipeline 20, so that the overall test is more data-based and accurate.
Specifically, the rotameter in the present embodiment includes a first rotameter 80 and a second rotameter 60, the return pipe 202 is provided with the branch pipe 70, the first rotameter 80 is mounted on the return pipe 202, the second rotameter 60 is mounted on the branch pipe 70, the first rotameter 80 may be a common precision meter, the second rotameter 60 may be a high precision meter, and the first rotameter 80 and the second rotameter 60 may be used together to meet the requirements of various use environments.
In the present embodiment, the first flow control valve is provided at a position corresponding to the first rotameter 80 on the return pipe 202, the second flow control valve is provided at a position corresponding to the second rotameter 60 on the branch pipe 70, the pipe diameter of the branch pipe 70 is smaller than that of the return pipe 202, and the flow rate of the circulation pipe 20 can be controlled by the arrangement of the branch pipe 70 and the arrangement of the first rotameter 80 and the second rotameter 60.
In a further possible implementation of this embodiment, an ultrasonic level gauge 120 is mounted on the tank 10.
The ultrasonic liquid level meter 120 mounted on the water tank 10 can facilitate accurate measurement of the water solution in the water tank and automatic control of data collection and automatic data collection.
Specifically, the top of the water tank 10 in this embodiment is open, and the bracket 121 is disposed on the top of the water tank, and the bracket 121 extends to the upper side of the accommodating space of the water tank 10 and is located at the center of the accommodating space, so that the accuracy of measurement can be improved.
The water tank 10 in this embodiment is provided with a water filling port 130 and a water outlet 150, the water filling port 130 is disposed at a position close to the top of the water tank 10, the water outlet 150 is disposed at a position close to the bottom of the water tank 10, and electromagnetic valves are disposed at the positions of the water filling port 130 and the water outlet 150, so that water filling and water draining can be automatically realized.
In a further embodiment of the present embodiment, a mounting limiting member 110 is disposed on the exterior of the water tank 10, the mounting limiting member 110 is connected to the outer surface of the rigid tube 104 such that the mounting limiting member 110 is positioned opposite to the rigid tube 104, and the rigid tube 104 penetrates through the wall of the water tank 10 into the accommodating space.
Referring to fig. 3, another aspect of the present embodiment provides a simulation test method for a water supply pipe network multi-parameter measuring device, including:
step 300: acquiring parameters of a test solution;
step 310: calculating to obtain the required tap water and the set quantitative values of the reagent based on the parameters of the test solution;
step 320: controlling to inject tap water with a set quantity value and a reagent into a water tank for mixing so as to prepare a test solution;
step 330: controlling the prepared test solution to be introduced into a multi-parameter measuring device;
step 340: and acquiring the measured value of the test solution detected and obtained by the multi-parameter measuring device.
The simulation test method for the multi-parameter measuring device of the water supply network in the embodiment can automatically simulate the tap water of the water supply network and automatically test the multi-parameter measuring device.
Specifically, in the present embodiment, the parameters of the test solution can be input by inputting various parameters (such as components and concentrations of the solution).
The calculation process of this embodiment can be calculated by a calculation formula to determine the required amount of fresh water and the amount of each reagent.
The present embodiment performs accurate data acquisition of the amount of fresh water in the water tank 10 by the ultrasonic level meter 120, and closes the water filling port 130 to stop filling water when a set amount of fresh water is reached.
In this embodiment, the pump 101 is driven to control the input of a set amount of reagent into the water tank 10.
In operation, clean water is first introduced into the water tank 10, then the circulating water pump 30 is started to circulate water in the circulating pipeline 20, and finally reagents are added to the clean water in the water tank through the reagent adding device 100 to prepare various types of test solutions.
The multi-parameter measurement device 200 may display measurement data obtained by its measurement on the software cloud platform.
After the measurement data is obtained, it may be compared to the parameters of the test solution to obtain an error for the multi-parameter measurement device 200.
Of course, in order to further improve the testing accuracy, the testing solution may be sampled, and then the sampled solution may be detected off-line to obtain comparison data, so as to determine the error of the multi-parameter measuring device 200 by comparing with the measurement data.
Referring to fig. 4, in another aspect, the present embodiment provides a simulation test control system for a water supply pipe network multi-parameter measurement apparatus, including:
a first obtaining unit 410 for obtaining parameters of the test solution;
a calculating unit 420, configured to calculate and obtain set quantitative values of the required tap water and the required reagent based on the parameters of the test solution;
a first control unit 430 for controlling the injection of tap water and reagents of set amounts into the water tank for mixing to prepare a test solution;
the second control unit 440 is used for controlling the prepared test solution to be introduced into the multi-parameter measuring device;
and a second obtaining unit 450, configured to obtain a measured value of the test solution detected by the multi-parameter measuring apparatus.
Specifically, the specific working process of the simulation test apparatus of this embodiment is as follows:
1. pipeline cleaning
At the initial stage of system installation completion, or not use for a long time, or after finishing certain kind of reagent test, impurity can inevitably appear in the interior of the waterway, at this moment, need after the waterway is wholly installed, start cleaning procedure, namely
a. Adding tap water into water tank, and optionally sterilizing and cleaning solution
b. Starting the circulating water pump to make water circularly flush in the system
c. Discharging the cleaned sewage
And repeating the steps until all parameters of the water sample extraction test reach the preset standard of the experimental test, and then filling tap water to the water tank to preset the water level h0 to prepare for the start of the experimental test.
2. System debugging
Through remote control, start circulating water pump makes the water route operation, is clear water work in the water route this moment, and whether each constitutional unit worked normally in the inspection water route, whether the measurement appearance registration shows normally. After ensuring that everything is good, the next work is started.
If the water temperature needs to be met, the heating electrode can be remotely controlled to start the heating electrode to heat the water in the water tank, so that the water temperature can reach the preset required level.
3. Water quality parameter adjustment
On the master control board 50, according to the method of combining the series of buttons of 'preliminary adjustment' and 'inching increase', the injection of clear water or reagent into the water tank is completed, so that the turbidity, the residual chlorine and the pH value reach the values required by the experimental test.
i. Starting a circulating water pump to ensure that the test solution is fully circulated in the circulating pipeline;
ii. Inputting current water quality parameters and numerical values required by experimental tests, and primarily adjusting the water quality parameters;
and iii, sampling from an offline contrast sampling port at intervals (such as 2 minutes), and measuring related parameters by using an offline instrument until the numerical value is not greatly changed before and after the occurrence of the numerical value or is within a certain specified range, so that the reagent is uniformly added.
And iv, if the turbidity, the residual chlorine and the pH value do not reach the values required by the experimental test, controlling the corresponding peristaltic pump to add the chemicals or inject the clean water on the master control console in a inching manner, and repeating the step iii until the water quality parameters meet the requirements.
4. Testing a multi-parameter measuring device (multi-parameter water meter)
After the three steps are completed, the multi-parameter measuring device (multi-parameter water meter) is started to start testing. In the test process, water is taken from the manual valve with the replaceable flange joint in the same test cycle, an offline test device is used for measuring, and data are uploaded by a multi-parameter measuring device (a multi-parameter water meter) in real time to carry out error recording.
5. Replacement of test reagents
After step 4 is completed, step 1 is re-entered, and then required reagents which are not tested yet are added at step 3, so that the testing and comparison work of each parameter is completed in a circulating way.
So far, the test work of the multi-parameter measuring device (multi-parameter water meter) is finished.
In the specific working process of the simulation test device of the embodiment, the water quality parameter preliminary regulation function is realized as follows:
the function is that the experiment tester inputs the current turbidity of water in the water tank, the residual chlorine and the pH value and the turbidity required by the experiment test, the residual chlorine and the pH value on the master control table 50, press the button of 'preliminary adjustment of water quality' on the master control table operation interface through the mouse, the computer of the master control table obtains the addition amount of required reagent or clear water through calculation, and convert the addition amount into the running time of a peristaltic pump or the opening time of an electric control valve at a tap water inlet, so as to control the injection amount of the reagent or the clear water, and further realize the preliminary adjustment of the turbidity, the residual chlorine and the pH parameter in the water tank.
Since the concentrations of turbidity, residual chlorine, acidic pH adjusting reagent and alkaline pH reagent may be different in each preparation, the operation interface of the general control console 50 has the turbidity reagent concentration C corresponding to each reagent kitTUResidual chlorine reagent concentration CCLAcid pH adjusting reagent concentration CPH-ACAnd alkaline pH reagent concentration CPH-ALThe input setting function of.
The water level in the tank can be measured by an ultrasonic level gauge mounted above the tank. When the water tankWhen the water level in the simulation test system reaches the preset water level h0, the water amount in the simulation test system is recorded as V0. The height of the water level in the water tank is h (h)>h0) In time, the water amount in the simulation test system is rho Ag + V0. Where ρ is the density of water and Ag is the acceleration of gravity.
Then the current turbidity, the residual chlorine and the pH value are respectively made to be NTU，NCLAnd NPHThe turbidity, residual chlorine and pH value required by experimental test are respectively
And
the flow rate of the clean water injected after the electromagnetic valve of the water injection port is opened is QinThe flow rate of the peristaltic pump for adding the turbidity reagent is QTUThe flow rate of the peristaltic pump for adding the residual chlorine reagent is QCLThe flow rate of the peristaltic pump for adding the acidic pH adjusting agent is QPH-ACThe flow rate of the peristaltic pump for adding the alkaline pH reagent is QPH-A. Wherein the turbidity is NTUAnd
has the unit of NTU, residual chlorine NCLAnd
in mg/L, the pH is a dimensionless number.
Because the amount of substances which affect the turbidity, the residual chlorine and the pH value of the water measured by the water supply pipe network multi-parameter measuring device is trace, and the unit is mg/L, the density of the water can not be affected when the reagent is added into the water tank to reach the turbidity, the residual chlorine and the pH value required by the experimental test. In addition, the operation only realizes the preliminary adjustment of water quality parameters, and if turbidity, residual chlorine and pH value do not reach the values required by experimental tests, reagents or clean water can be added through inching control to achieve the aim.
Based on the above assumptions, the following approximate calculation formulas of the starting time of the peristaltic pump and the opening time of the electromagnetic valve of the water filling port in the method for realizing the preliminary adjustment of the water quality parameters by one key are respectively given:
(1) for turbidity
When experimentally tested for the required turbidity
Greater than current turbidity NTUWhen the reagent is used, a peristaltic pump is started to add a turbidity reagent into a water tank, and the starting time t of the peristaltic pumpNTUIs composed of
Wherein k isTUThe conversion coefficient between the NTU value and the concentration of the turbidity reagent is constant.
When experimentally tested for the required turbidity
Less than current turbidity NTUWhen the water tank is filled with clean water, the electromagnetic valve at the water inlet of the tap water is opened for a period tauTUIs composed of
(2) For residual chlorine
When the experiment tests the required residual chlorine concentration
Greater than the current residual chlorine concentration NCLWhen the chlorine residue is added into the water tank, the peristaltic pump is started, and the starting time t of the peristaltic pump isCLIs composed of
When the experiment tests the required residual chlorine concentration
Less than the current residual chlorine concentration NCLWhen the water tank is filled with clean water, the electromagnetic valve at the water inlet of the tap water is opened for a period tauCLIs composed of
(3) For pH
When the pH value required by experimental test is tested
Less than the current pH value NPHWhen the pH value of the acid pH value is adjusted, the peristaltic pump is started to add the acid pH value adjusting reagent into the water tank, and the starting time t of the peristaltic pumpPH-ACIs composed of
Wherein, λ is the coefficient of the conversion formula of the pH value and the hydrogen ion concentration, and is a constant.
When the pH value required by experimental test is tested
Greater than the current pH value NPHWhen the water tank is filled with clean water, the electromagnetic valve at the water inlet of the tap water is opened for a period tauPH-ACIs composed of
Wherein, λ is the coefficient of the conversion formula of the pH value and the hydrogen ion concentration, and is a constant.
When the pH value required by experimental test is tested
Greater than the current pH value NPHWhen the pH value of the alkaline pH reagent is increased, the peristaltic pump is started to add the alkaline pH reagent into the water tank, and the starting time t of the peristaltic pumpPH-ALIs composed of
Wherein mu is a coefficient of a conversion formula of the pH value and the concentration of the hydroxide ions and is a constant.
When the pH value required by experimental test is tested
Less than the current pH value NPHWhen the water tank is filled with clean water, the electromagnetic valve at the water inlet of the tap water is opened for a period tauPH-ALIs composed of
Wherein mu is a coefficient of a conversion formula of the pH value and the concentration of the hydroxide ions and is a constant.
In the specific working process of the simulation test device of this embodiment, the inching control realizes the following fine adjustment function of the water quality parameters:
the operating interface of the master control console is provided with a turbidity inching increase button, a residual chlorine inching increase button, a pH inching increase button and a clear water inching increase button. These buttons are all impulse buttons in function, that is, an operator presses the button, reagent or clean water is added according to a certain dosage, and the adding amount is irrelevant to the pressed time length of the button. If the adding process is not completed, the instruction will not be responded even if the operator presses the button. After the turbidity inching increase button, the residual chlorine inching increase button and the pH inching increase button are pressed, the corresponding peristaltic pumps of the turbidity, the residual chlorine and the pH are started, and the starting time can be set on an operation interface and can be selected from 5 seconds, 10 seconds, 15 seconds and the like. After the clear water inching increase button is pressed, the electromagnetic valve of the corresponding tap water inlet is opened, and the opening time can be set on the operation interface and can be selected to be 5 seconds, 10 seconds or 15 seconds and the like.
The simulation test system designs a series of buttons of 'preliminary adjustment' and 'inching increase', and essentially realizes the open-loop adjustment of water quality parameters in the water tank according to the special conditions and requirements of the simulation test system of the water supply network multi-parameter measuring device. The special condition is that the precision of the off-line water quality sensor is obviously higher than that of the on-line water quality sensor, and the off-line water quality sensor needs manual operation of an operator and cannot realize real-time closed-loop adjustment of water quality parameters. If reagent or clean water is injected completely by starting and stopping the peristaltic pump or switching the electromagnetic valve, the turbidity, the residual chlorine and the pH value of the water in the water tank can be adjusted to the values required by the experimental test by calculating and comparing for many times by an operator, so that the workload of the operator is increased, and the experimental test efficiency is influenced. Especially, when the water tank is far away from the test bench, for example, the water tank is outdoors and the test bench is indoors, or the water tank and the test bench are not in the same room, the advantages brought by the embodiment will be more obvious.
The combined advantages of the preliminary adjustment and the point control are that the influence of the precision of the peristaltic pump and the opening and closing speed of the electromagnetic valve on the amount of the added reagent or the amount of water is not emphasized, so that the cost of the simulation test system can be reduced, and the practicability is higher.
This embodiment still is provided with the alarming function when the liquid level is too high.
If the added medicine or the injected clean water exceeds the secondary warning water level in the water tank, the sound alarm on the operation panel is triggered to remind an operator to press a button on the operation panel to remotely open the electric valve or open the manual valve for drainage. If the added or injected clean water exceeds the first-level warning water level in the water tank, an audible alarm is triggered on the operation panel, meanwhile, the electric valve for injecting the clean water or the peristaltic pump for injecting the reagent is automatically closed, when an operator presses a button on the operation panel to remotely open the electric valve or open the manual valve to drain the water to the level below the warning water level, the audible alarm is automatically closed, and the electric valve for injecting the clean water or the peristaltic pump for injecting the reagent is recovered.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A simulation test device for a water supply network multi-parameter measuring device is characterized by comprising:
a water tank having a receiving space for receiving an aqueous solution;
the circulating pipeline is used for installing and communicating a multi-parameter measuring device, and two ends of the circulating pipeline are respectively connected with the water tank and communicated with the accommodating space;
the circulating water pump is arranged on the circulating pipeline and used for driving the water solution in the water tank to flow through the circulating pipeline;
and the reagent adding device is arranged on the water tank and is used for adding the reagent into the accommodating space of the water tank.
2. The simulation test device of claim 1, wherein the reagent adding device comprises a reagent box, a driving pump and a reagent conveying pipe, the reagent box is used for containing a reagent, a first end of the reagent conveying pipe is communicated with the containing space of the water tank, a second end of the reagent conveying pipe is communicated with the reagent box, and the reagent conveying pipe is connected with the driving pump so that the reagent in the reagent box can enter the containing space of the water tank.
3. The simulation test device of claim 2, wherein the reagent delivery tube comprises a rigid tube and a flexible tube, the driving pump is a peristaltic pump, a first end of the flexible tube is communicated with the reagent kit, a second end of the flexible tube is communicated with the rigid tube, the rigid tube is connected with the water tank so that the rigid tube and the water tank are oppositely positioned, and an outlet end of the rigid tube extends into the accommodating space of the water tank and is far away from the inner wall of the water tank.
4. The simulation test device of claim 1, wherein the circulation pipeline is provided with an off-line contrast sampling port.
5. The simulation test device of claim 1, wherein a heating device is disposed on the water tank.
6. The simulation test device of claim 1, wherein a liquid level gauge is provided on the water tank and along a height direction thereof.
7. The simulation test device of claim 1, wherein the circulation pipeline comprises at least an output pipe and a return pipe, a first end of the output pipe is communicated with an outlet of the water tank, a second end of the output pipe is used for being communicated with an inlet of the multi-parameter measuring device, a first end of the return pipe is used for being communicated with an outlet of the multi-parameter measuring device, a second end of the return pipe is communicated with an inlet of the water tank, the circulation water pump is arranged on the output pipe and is close to a joint of the output pipe and the water tank, a joint of the output pipe and the water tank is close to the bottom of the water tank, and a joint of the return pipe and the water tank is close to the top of the water tank.
8. The simulation test device of claim 7, further comprising a base bracket, wherein the second end of the output tube is fixedly disposed on the base bracket, and wherein the first end of the return tube is fixedly disposed on the base bracket.
9. The simulation test device of claim 1, wherein the reagents comprise at least: residual chlorine regulating reagent, turbidity regulating reagent, conductivity regulating reagent and pH value regulating reagent, the reagent feeding device at least comprises: the device comprises a first reagent adding device, a second reagent adding device, a third reagent adding device and a fourth reagent adding device, wherein the first reagent adding device is used for adding a residual chlorine regulating reagent, the second reagent adding device is used for adding a turbidity regulating reagent, the third reagent adding device is used for adding a conductivity regulating reagent, and the fourth reagent adding device is used for adding a pH value regulating reagent.
10. The simulation test device of claim 1, wherein a rotameter is disposed on the circulation conduit.
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| CN202120011140.4U CN214200172U (en) | 2021-01-05 | 2021-01-05 | Simulation test device of water supply pipe network multi-parameter measuring device |
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| CN202120011140.4U CN214200172U (en) | 2021-01-05 | 2021-01-05 | Simulation test device of water supply pipe network multi-parameter measuring device |
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