A device for adding chlorine to secondary water supply and storage equipment

Abstract

A device for adding chlorine to a secondary water supply storage device comprises a stock solution storage device, a sampling assembly, a dilution device, a dosing assembly, a monitoring device and a control device, wherein the stock solution storage device is connected to the dilution device through the sampling assembly, the dilution device is connected to the water tank through the dosing assembly, the monitoring device is installed on the water tank or the stock solution storage device, and the control device is respectively connected to the stock solution storage device, the sampling assembly, the dilution device, the dosing assembly and the monitoring device. The beneficial effects of the present invention are: it solves the compliance problem of using sodium hypochlorite stock solution to disinfect drinking water, and solves the difficulties encountered in manufacturing, transportation and installation, and the method is simple and easy.

Description

Technical Field

[0001] The invention relates to the field of secondary water supply in a city water supply pipe network system, and in particular to a device for adding chlorine to secondary water supply and storage equipment. Background Art

[0002] After adding chlorine-containing disinfectants to tap water, sufficient residual chlorine concentration can be maintained in the tap water network system for a long time, thereby ensuring that the microorganisms in the tap water are controlled within the qualified range. Residual chlorine refers to the amount of effective chlorine remaining in the water after the chlorine-containing disinfectant has been in contact with water for a certain period of time when using chlorine-containing disinfectants for disinfection. Effective chlorine refers to the oxidation capacity of a certain amount of chlorine-containing disinfectant and acid. When the reaction is complete, its oxidation capacity is equivalent to the oxidation capacity of a certain weight of chlorine gas. It is used to measure the oxidation capacity of chlorine-containing disinfectants. In practice, the oxidation capacity of chlorine-containing disinfectants is expressed by effective chlorine content, and the common unit is g / L, while the oxidation capacity of chlorine-containing disinfectants remaining in tap water is usually expressed by residual chlorine concentration, and the common unit is mg / L.

[0003] Secondary water supply refers to the water supply method that supplies water to users or for self-use through pipelines through storage, pressurization and other facilities when the water pressure and water volume requirements of drinking water for civil and industrial buildings exceed the capacity of urban public water supply or self-built water supply network. Secondary water supply facilities mainly include three parts: water storage equipment, pressurization equipment and pipelines. As the end of the urban water supply network system, the secondary water supply storage equipment (hereinafter referred to as the water tank) plays the role of the last barrier to ensure the safety of tap water quality. Tap water will stay in the water tank for a period of time. If the residence time is too long, the residual chlorine concentration may decay to a very low level, which will not effectively kill the microorganisms in the water, causing the microbial indicators of the tap water in the water tank to exceed the standard.

[0004] When the residual chlorine concentration of tap water in the water tank is low to a certain extent, adding a certain amount of chlorine-containing disinfectant to the water tank is an effective way to solve the problem of low residual chlorine concentration in the water tank. This method is also called chlorine supplementation. Commonly used chlorine-containing disinfectants include liquid chlorine, chloramines and sodium hypochlorite. Among them, liquid chlorine requires special methods for transportation and storage, and is not suitable for unattended automatic management in residential areas; chloramines need to have a long contact time with tap water to play a disinfecting role, and are not suitable for disinfection at the end of the pipe network system; sodium hypochlorite is the best choice for chlorine supplementation of tap water in water tanks.

[0005] Although various finished sodium hypochlorite disinfectants (called sodium hypochlorite stock solutions) are currently on the market for use in disinfection in various situations, sodium hypochlorite stock solutions cannot be directly used for disinfection of water tanks. The main reasons are: 1) The effective chlorine content of sodium hypochlorite stock solutions is usually 100g / L (i.e. 100,000 mg / L), and the sodium hypochlorite stock solution needs to be accurately diluted about 30,000 times before it can be used to disinfect tap water in water tanks; 2) If a dilution tank is used for dilution according to the conventional method, the volume of the dilution tank needs to reach 1200L to dilute only 40ml of sodium hypochlorite stock solution, which is difficult to manufacture, transport and install; 3) The effective chlorine content of sodium hypochlorite stock solution will continue to decay over time, so its effective chlorine content must be tested in time when used to accurately calculate the actual dosage.

[0006] The prior art with Chinese patent application number 2018112400111 disclosed a method and system for composite loop controlled secondary water supply chlorination on February 15, 2019, which mainly adds sodium hypochlorite solution in proportion to the inlet flow rate according to the default addition coefficient, and then adjusts the addition coefficient after a period of time according to the residual chlorine concentration signal in the outlet water fed back from the outlet end, and repeats the cycle. However, in actual application, the prior art still has the following defects: 1) The purchased sodium hypochlorite solution has a very high effective chlorine content (the effective chlorine content of 10% sodium hypochlorite solution is 100g / L), and cannot be directly added to the water tank for use, because it takes a long time for the high-concentration sodium hypochlorite solution to mix with the tap water in the water tank after entering the water tank, and the tap water is used continuously, so that the added high-concentration sodium hypochlorite solution is easily used directly by the user without mixing, which will cause harm to the health of the user; 2) The high-concentration sodium hypochlorite solution will also cause corrosion to the water tank or connecting pipes due to its strong corrosiveness; 3) The effective chlorine content of the added sodium hypochlorite solution is not detected in real time, and it is always calculated based on the effective chlorine content marked at the time of purchase. This method will cause the sodium hypochlorite solution to decay after a period of time, resulting in a serious shortage of dosage, and the effectiveness of killing microorganisms in the water is greatly reduced; 4) This technology only adjusts the speed of adding sodium hypochlorite solution, but sodium hypochlorite solution is always added. In practice, the residual chlorine concentration of tap water in the water tank is qualified in most cases and can ensure the safety of tap water. Therefore, in most cases, it is not necessary to add sodium hypochlorite solution to increase the residual chlorine concentration. It not only wastes sodium hypochlorite solution but also may endanger the health of users. Summary of the invention

[0007] The purpose of the present invention is to provide a device for adding chlorine to secondary water supply and storage equipment, which not only ensures the compliance of the use of sodium hypochlorite stock solution to disinfect drinking water, but also solves the difficulties encountered in manufacturing, transportation and installation, and the device is simple and the method is easy to implement.

[0008] The objective of the present invention is achieved through such a technical solution, a device for adding chlorine to secondary water supply storage equipment, comprising a stock liquid storage device, a sampling component, a dilution device, a dosing component, a monitoring device and a control device, the stock liquid storage device is connected to the dilution device through the sampling component, the dilution device is connected to the water tank through the dosing component, the monitoring device is installed on the water tank or the stock liquid storage device, and the control device is respectively connected to the stock liquid storage device, the sampling component, the dilution device, the dosing component and the monitoring device.

[0009] In the technical solution, the monitoring equipment is used to monitor the residual chlorine concentration and water level of the tap water in the water tank, and is also used to detect the effective chlorine content of the sodium hypochlorite stock solution in the stock solution storage tank. When the residual chlorine concentration of the tap water in the water tank is lower than the set value, the control equipment starts the chlorine addition work for the tap water in the water tank, and adds a certain amount of sodium hypochlorite stock solution in the storage tank to the dilution device through the sampling component. In the dilution device, the sodium hypochlorite stock solution is diluted into a sodium hypochlorite solution of the set concentration through two rounds of dilution, and is added to the water tank through the dosing component. This not only ensures the compliance of the use of sodium hypochlorite stock solution to disinfect drinking water, but also solves the difficulties encountered in manufacturing, transportation and installation, and the device is simple and the method is easy to implement.

[0010] Furthermore, the raw liquid storage device includes a raw liquid storage tank and a water level detection switch, and the water level detection switch is installed in the raw liquid storage tank and connected to the control device.

[0011] Furthermore, the sampling assembly includes a sampling tube and a sampling pump. One end of the sampling tube is connected to the stock solution storage tank, and the other end is connected to the dilution device. The sampling pump is installed on the sampling tube and connected to the control device.

[0012] Furthermore, the dosing assembly includes a dosing pipe and a dosing pump, one end of the dosing pipe is connected to the dilution device, and the other end is connected to the water tank; the dosing pump is installed on the dosing pipe and connected to the control device.

[0013] Furthermore, the dilution device includes a first dilution tank, a second dilution tank, a liquid adding pipe and a liquid adding pump; a water level switch and an agitator are provided in the first dilution tank and the second dilution tank, the first dilution tank is connected to the stock liquid storage tank through a sampling pipe, the second dilution tank is connected to the water tank through a dosing pipe, both ends of the liquid adding pipe are connected to the first dilution tank and the second dilution tank respectively, and the liquid adding pump is installed on the liquid adding pipe; the liquid adding pump, the water level switch and the agitator are all connected to the control device.

[0014] Furthermore, the dilution device also includes a water adding component, which includes a water adding main pipe, a water adding pump, a first water adding branch pipe, a second water adding branch pipe, a first water adding solenoid valve and a second water adding solenoid valve; one end of the water adding main pipe is connected to the water tank, and the other end of the water adding main pipe is connected to the first dilution tank and the second dilution tank through the first water adding branch pipe and the second water adding branch pipe respectively, the water adding pump is installed on the water adding main pipe, and the first water adding solenoid valve and the second water adding solenoid valve are respectively installed on the first water adding branch pipe and the second water adding branch pipe; the water adding pump, the first water adding solenoid valve and the second water adding solenoid valve are all connected to the control device.

[0015] Furthermore, the monitoring equipment includes a water level meter, a residual chlorine monitoring component and a sodium hypochlorite stock solution detection component; the water level meter is installed in a water tank, the residual chlorine monitoring component includes a first water diversion pipe and a residual chlorine meter, one end of the first water diversion pipe is connected to the water tank, and the residual chlorine meter is installed on the first water diversion pipe, the sodium hypochlorite stock solution detection component includes a second water diversion pipe, a sodium hypochlorite detector and a detection pump, one end of the second water diversion pipe is connected to the stock solution storage tank, the sodium hypochlorite detector and the detection pump are both installed on the second water diversion pipe, the detection pump is close to the stock solution storage tank, and the water level meter, the residual chlorine meter, the sodium hypochlorite detector and the detection pump are all connected to the control device.

[0016] Furthermore, the control device includes an intelligent controller and a remote controller, and the intelligent controller includes a data acquisition module, a data storage module, a data processing module, a control module and a communication module; the data storage module is connected to the data acquisition module, the data processing module and the communication module, the data processing module is also connected to the control module and the communication module respectively, and the communication module is also connected to the remote controller; the data acquisition module is connected to the water level detection switch, the water level switch, the water level meter, the residual chlorine meter and the sodium hypochlorite detector, and the control module is connected to the agitator, the sampling pump, the liquid adding pump, the water adding pump, the dosing pump, the detection pump, the first water adding solenoid valve and the second water adding solenoid valve.

[0017] Furthermore, the raw liquid storage device, the sampling component, the dilution device, the dosing component, the residual chlorine monitoring component and the intelligent controller are all installed in the box.

[0018] Due to the adoption of the above technical solution, the present invention has the following advantages:

[0019] 1. The present invention uses finished sodium hypochlorite to add chlorine, which is simple and easy to implement and is particularly suitable for use in unattended places such as secondary water supply tanks;

[0020] 2. The present invention specifically designs a method for diluting a high concentration of sodium hypochlorite stock solution into a concentration of 2 The dilution device with 4mg / L available diluent can dilute the sodium hypochlorite stock solution by more than 1000 times, and is small in size, easy to install, and can operate automatically, ensuring that the sodium hypochlorite stock solution is safely used within the concentration range permitted by regulations to increase the residual chlorine concentration of tap water in the water tank, avoiding the health risks that may be brought to users by using high-concentration sodium hypochlorite solution, and greatly saving the volume of the dilution tank compared to using only one dilution tank for dilution (if one dilution tank is used, the volume of the dilution tank needs to be more than 1000 liters), which brings great convenience to production, transportation and installation; in addition, it reduces the risk of corrosion of the water tank or connecting pipes;

[0021] 3. The present invention determines whether chlorine needs to be added and the amount of chlorine added according to the residual chlorine concentration of tap water in the water tank monitored in real time, thereby ensuring the killing of microorganisms in the water, saving energy and reducing the difficulty of equipment maintenance;

[0022] 4. The dilution water of the present invention is taken from the water tank, thus avoiding the trouble of providing an additional water source. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A functional schematic diagram of the present invention.

[0024] Figure 2 A structural schematic diagram of the present invention.

[0025] The markings in the figure are: 1. stock solution storage device, 2. sampling component, 3. dilution device, 4. dosing component, 5. water tank, 6. monitoring equipment, 7. control equipment, 8. stock solution storage tank, 9. water level detection switch, 10. sampling tube, 11. sampling pump, 12. dosing tube, 13. dosing pump, 14. first dilution tank, 15. second dilution tank, 16. liquid adding tube, 17. liquid adding pump, 18. water level switch, 19. agitator, 20. water adding main pipe, 21. water adding pump, 22. first water adding Branch pipe, 23, second water adding branch pipe, 24, first water adding solenoid valve, 25, second water adding solenoid valve, 26, water level meter, 27, first water diversion pipe, 28, residual chlorine meter, 29, second water diversion pipe, 30, sodium hypochlorite detector, 31, detection pump, 32, intelligent controller, 33, remote controller, 34, data acquisition module, 35, data storage module, 36, data processing module, 37, control module, 38, communication module, 39, box, 40, drain pipe, 41, overflow pipe. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Example 1

[0028] like Figure 1 and Figure 2 As shown, a device for adding chlorine to a secondary water supply storage device includes a stock solution storage device 1, a sampling component 2, a dilution device 3, a dosing component 4, a monitoring device 6 and a control device 7. The stock solution storage device 1 is connected to the dilution device 3 through the sampling component 2, the dilution device 3 is connected to the water tank 5 through the dosing component 4, the monitoring device 6 is installed on the water tank 5 or the stock solution storage device 1, and the control device 7 is respectively connected to the stock solution storage device 1, the sampling component 2, the dilution device 3, the dosing component 4 and the monitoring device 6.

[0029] In the technical solution, the monitoring device 6 is used to monitor the residual chlorine concentration and water level of the tap water in the water tank, and is also used to detect the effective chlorine content of the sodium hypochlorite stock solution in the stock solution storage tank 8. When the residual chlorine concentration of the tap water in the water tank 5 is lower than the set value, the control device 7 starts the chlorine addition work for the tap water in the water tank 5, and adds the quantitative sodium hypochlorite stock solution in the stock solution storage tank 8 to the dilution device 3 through the sampling component 2. The sodium hypochlorite stock solution is diluted into a sodium hypochlorite solution of the set concentration through two rounds of dilution in the dilution device 3, and is added to the water tank 5 through the dosing component 4. It not only ensures the compliance of the use of sodium hypochlorite stock solution to disinfect drinking water, but also solves the difficulties encountered in manufacturing, transportation and installation, and the device is simple and the method is easy to implement.

[0030] Furthermore, the raw liquid storage device 1 includes a raw liquid storage tank 8 and a water level detection switch 9. The water level detection switch 9 is installed in the raw liquid storage tank 8 and connected to the control device 7. The raw liquid storage tank 8 is used to store sodium hypochlorite raw liquid. When the liquid level of the sodium hypochlorite raw liquid in the raw liquid storage tank 8 drops to a set value, the water level detection switch 9 sends an alarm signal to the control device 7 that the sodium hypochlorite raw liquid needs to be replenished.

[0031] Furthermore, the sampling assembly 2 is used to add a quantitative amount of sodium hypochlorite stock solution stored in the stock solution storage tank 8 to the dilution device 3, and includes a sampling tube 10 and a sampling pump 11. One end of the sampling tube 10 is connected to the stock solution storage tank 8, and the other end is connected to the dilution device 3. The sampling pump 11 is a quantitative pump, which is installed on the sampling tube 10 and connected to the control device 7. The liquid inlet of the sampling tube 10 in the stock solution storage tank 8 is close to its bottom, and the sampling tube 10 enters the dilution device 3 from the upper part or the upper side.

[0032] Furthermore, the dosing component 4 is used to add a quantitative sodium hypochlorite solution diluted to a set concentration range into the water tank 5, and includes a dosing pipe 12 and a dosing pump 13. One end of the dosing pipe 12 is connected to the dilution device 3, and the other end is connected to the water tank 5. The dosing pump 13 is a quantitative pump installed on the dosing pipe 12 and connected to the control device 7. The liquid inlet of the dosing pipe 12 in the dilution device 3 is close to its bottom, and the dosing pipe 12 enters the water tank 5 from the upper part or the upper part of the side.

[0033] Furthermore, the dilution device 3 is used to dilute the sodium hypochlorite stock solution to a set concentration range so as to be directly added to the water tank 5 for use, and includes a first dilution tank 14, a second dilution tank 15, a liquid adding pipe 16 and a liquid adding pump 17. A water level switch 18 and an agitator 19 are provided in the first dilution tank 14 and the second dilution tank 15. The first dilution tank 14 is connected to the stock solution storage tank 8 through a sampling pipe 10, and the second dilution tank 15 is connected to the water tank 5 through a dosing pipe 12. Both ends of the liquid adding pipe 16 are connected to the first dilution tank 14 and the second dilution tank 15, respectively. The liquid adding pump 17 is a quantitative pump installed on the liquid adding pipe 16. The liquid adding pump 17, the water level switch 18 and the agitator 19 are all connected to the control device 7; wherein the first dilution tank 14 is used to perform a first overall dilution on the sodium hypochlorite stock solution and obtain an intermediate dilution liquid, and the second dilution tank 15 is used to perform a second quantitative dilution on the intermediate dilution liquid to obtain a usable dilution liquid for adding to the water tank 5. The liquid inlet of the liquid adding pipe 16 in the first dilution tank 14 is close to the bottom thereof, and the liquid adding pipe 16 enters the second dilution tank 15 from the upper part or the upper part of the side.

[0034] Furthermore, the dilution device 3 also includes a water adding component, which is used to add dilution water taken from the water tank 5 to the dilution tank, including a water adding main pipe 20, a water adding pump 21, a first water adding branch pipe 22, a second water adding branch pipe 23, a first water adding solenoid valve 24, and a second water adding solenoid valve 25. One end of the water adding main pipe 20 is connected to the water tank 5, and the other end of the water adding main pipe 20 is connected to the first dilution tank 14 and the second dilution tank 15 through the first water adding branch pipe 22 and the second water adding branch pipe 23 respectively. The water adding pump 21 is a quantitative pump installed on the water adding main pipe 20. The first water-adding solenoid valve 24 and the second water-adding solenoid valve 25 are respectively installed on the first water-adding branch pipe 22 and the second water-adding branch pipe 23; the water-adding pump 21, the first water-adding solenoid valve 24 and the second water-adding solenoid valve 25 are all connected to the control device 7; the liquid inlet of the water-adding main pipe 20 in the water tank 5 is close to its bottom, and the water-adding branch pipe enters into it from the upper part or the upper part of the side of the corresponding dilution tank. Through the cooperation of the water-adding pump 21, the first water-adding solenoid valve 24 and the second water-adding solenoid valve 25, water can be supplied to the first dilution tank 14 and the second dilution tank 15 respectively.

[0035] Furthermore, it also includes a drain pipe 40. The upper part of the side of the first dilution tank 14 and the second dilution tank 15 is provided with an overflow pipe 41. One end of the overflow pipe 41 is connected to the corresponding dilution tank, and the other end is connected to the drain pipe 40. The liquid inlet of the overflow pipe 41 in the corresponding dilution tank is called an overflow port. In the first dilution tank 14, the overflow port of the overflow pipe 41 is located lower than the water outlet positions of the sampling tube 10 and the first water-adding branch pipe 22. In the second dilution tank 15, the overflow port of the overflow pipe 41 is located lower than the water outlet positions of the liquid-adding pipe 16 and the second water-adding branch pipe 23. When the water level of the solution in the first dilution tank 14 and the second dilution tank 15 is higher than the overflow port, the solution flows out from the overflow pipe, which is conducive to preventing the solution in the first dilution tank 14 and the second dilution tank 15 from flowing back.

[0036] Furthermore, the monitoring device 6 includes a water level meter 26, a residual chlorine monitoring component and a sodium hypochlorite stock solution detection component. The water level meter 26 is installed in the water tank 5 and is used to monitor the water level of the tap water in the water tank in real time; the residual chlorine monitoring component is used to monitor the residual chlorine concentration of the tap water in the water tank 5, including a first water diversion pipe 27 and a residual chlorine meter 28, one end of the first water diversion pipe 27 is connected to the lower part of the side of the water tank 5, and the other end is connected to the drain pipe 40. The residual chlorine meter 28 selects a low-range online residual chlorine meter and is installed on the first water diversion pipe 27; the sodium hypochlorite stock solution detection component includes a second water diversion pipe 29, a sodium hypochlorite detector 30 and a detection pump 31. The second water diversion pipe 29 is connected to the drain pipe 40. One end is connected to the lower side of the raw liquid storage tank 8, and the other end is connected to the drain pipe 40. The sodium hypochlorite detector 30 is a sensor specifically used to detect the effective chlorine content of high-concentration sodium hypochlorite raw liquid, such as the sodium hypochlorite detector model ST-604 produced by Qipan Technology (Shanghai) Development Co., Ltd., which is installed on the second water diversion pipe 29. The detection pump 31 is a quantitative pump and is also installed on the second water diversion pipe 29. The position of the detection pump 31 on the second water diversion pipe 29 is closer to the raw liquid storage tank 8 than the sodium hypochlorite detector; the water level meter 26, the residual chlorine meter 28, the sodium hypochlorite detector 30 and the detection pump 31 are all connected to the control device 7.

[0037] Furthermore, the sampling tube 10, the liquid adding tube 16, the dosing tube 12, the second water diversion tube 29, the overflow tube 41 and the drain tube 40 involved in this patent should all be made of corrosion-resistant materials, such as PE tube, PP tube, fluororubber tube, stainless steel tube, etc. The stock liquid storage tank 8 and the dilution tank need to be made of corrosion-resistant materials, the water level detection switch 9, the water level switch 18, the water level meter 26, the residual chlorine meter 28 and the sodium hypochlorite detector 30 are collectively referred to as special sensors, the agitator 19, the sampling pump 11, the liquid adding pump 17, the water adding pump 21, the dosing pump 13, the detection pump 31, the first water adding solenoid valve 24 and the second water adding solenoid valve 25 are collectively referred to as special equipment, and the water level detection switch 9 and the water level switch 18 in the special sensor and the agitator 19, the sampling pump 11, the liquid adding pump 17, the dosing pump 13 and the detection pump 31 in the special equipment also need to have corrosion resistance.

[0038] Furthermore, the control device 7 includes an intelligent controller 32 and a remote controller 33. The intelligent controller 32 includes a data acquisition module 34, a data storage module 35, a data processing module 36, a control module 37 and a communication module 38. The data acquisition module 34 is connected to the dedicated sensor and the data storage module 35 respectively. The data storage module 35 is also connected to the data processing module 36 and the communication module 38 respectively. The data processing module 36 is also connected to the control module 37 and the communication module 38 respectively. The control module 37 is also connected to the dedicated device, and the communication module 38 is also connected to the remote controller 33. The data acquisition module 34 can collect data from the dedicated sensor in real time. The data storage module 35 can store various data collected by the data acquisition module 34 in real time, can store the later calculation results of the data processing module 36, and can store the data and signals received or sent by the communication module 38; the data processing module 36 is a single-chip microcomputer, which can perform various calculations and send control signals according to pre-written software; the control module 37 adopts relays, which can realize the opening and closing of special equipment according to the control signal sent by the data processing module 36; the communication module 38 can communicate with the remote controller 33 in two directions, and can not only receive the data and control signals sent by the remote controller 33, but also send data and alarm signals to the remote controller 33.

[0039] Furthermore, the remote controller 33 is located in the secondary water supply management center, and is used to send software upgrade version data to the intelligent controller 32, send various parameter data that need to be manually set to the intelligent controller 32, send control signals to turn on or off special equipment to the intelligent controller 32, and can receive data and alarm signals sent by the intelligent controller 32.

[0040] Furthermore, the stock solution storage device 1, the sampling component 2, the dilution device 3, the dosing component 4, the residual chlorine monitoring component, the sodium hypochlorite stock solution detection component and the intelligent controller 32 are all installed in the box 5. The box 5 is made of cold-rolled steel plate, with a size of 0.8m*0.55m*1.15m, and is divided into two layers, the upper layer is mainly equipped with the intelligent controller 32, and the lower layer is mainly equipped with the stock solution storage device 1, the sampling component 2, the dilution device 3, the dosing component 4, the residual chlorine monitoring component and the sodium hypochlorite stock solution detection component.

[0041] Example 2

[0042] An implementation method of a device for adding chlorine to a secondary water supply and storage device is as follows:

[0043] Step 1: Use the residual chlorine meter 28 to monitor the residual chlorine concentration of the tap water in the water tank 5 in real time, and the intelligent controller 32 collects the residual chlorine concentration data monitored by the residual chlorine meter in real time. When the residual chlorine concentration drops to the set residual chlorine safety value, the intelligent controller 32 starts the chlorine supplementation work;

[0044] Step 2: The intelligent controller 32 starts the sodium hypochlorite stock solution detection component to detect the effective chlorine content of the sodium hypochlorite stock solution in the stock solution storage tank 8, and closes the sodium hypochlorite stock solution detection component after the detection is completed;

[0045] Step 3: The intelligent controller 32 calculates the volume of the sodium hypochlorite stock solution to be sampled based on the detection result of step 2 and the water level data obtained by real-time monitoring;

[0046] Step 4: The intelligent controller 32 adds a quantitative sodium hypochlorite stock solution into the first dilution tank 14 through the sampling component according to the calculation result of step 3, and then starts the dilution work in the first dilution tank 14 to obtain an intermediate dilution solution;

[0047] Step 5: The intelligent controller 32 outputs the intermediate dilution liquid to the second dilution tank 15 in multiple batches and quantitatively, and then starts the dilution work in the second dilution tank 15 to obtain a concentration of 2 4mg / L of available diluent is added into the water tank 5. When the intermediate diluent in the first dilution tank 14 is used up and the available diluent in the second dilution tank 15 is all added into the water tank 5, the chlorine supplementation work for the tap water in the water tank 5 is finished.

[0048] The present invention uses a dilution device consisting of two small dilution tanks to quantitatively dilute the high-concentration sodium hypochlorite stock solution to the concentration range permitted by regulations, and then adds it into the water tank 5 to increase the residual chlorine concentration of the tap water in the water tank 5, thereby solving the compliance problem of using the sodium hypochlorite stock solution to disinfect drinking water, and solving the difficulties encountered in manufacturing, transportation and installation, and the method is simple and easy.

[0049] Further, in step 1, the residual chlorine safety value is a residual chlorine concentration value set artificially, which means that when the residual chlorine concentration of the tap water in the water tank drops to this value, it is necessary to start adding chlorine to the tap water in the water tank 5, and the range is 0.05 0.3mg / L.

[0050] Furthermore, in step 2, a high-range online sodium hypochlorite detector 30 is used. Normally, the sodium hypochlorite detector is in a closed state, and is turned on when the work of adding chlorine to the tap water in the water tank 5 is started.

[0051] Further, in step 3, the volume of the sampled sodium hypochlorite stock solution is calculated as follows:

[0052] (1)

[0053] in, The volume of sodium hypochlorite stock solution that needs to be sampled in order to achieve the purpose of adding chlorine; It is the effective chlorine content of the sodium hypochlorite stock solution obtained by detection; The residual chlorine increase value is a manually set residual chlorine concentration value, which refers to the value of the increase in the residual chlorine concentration of tap water in the water tank after one chlorine addition. The range is 0.1 0.4mg / L; When the residual chlorine concentration of tap water in the water tank is equal to or lower than the residual chlorine safety value, the water level of the water tank is detected; is the horizontal longitudinal cross-sectional area of ​​the water tank.

[0054] Furthermore, in step 4, the sampling of the sodium hypochlorite stock solution is implemented by a metering pump. The dilution work after the sodium hypochlorite stock solution is added to the first dilution tank 14 includes two actions: adding dilution water and stirring. The dilution water is taken from the water tank 5. The addition of dilution water is implemented by a metering pump, and the stirring is implemented by a stirrer. The solution finally obtained is called an intermediate dilution solution.

[0055] Further, in step 5, the intermediate dilution liquid in the first dilution tank 14 is quantitatively output to the second dilution tank 15 in multiple times, and the volume of the intermediate dilution liquid output each time is assumed to be ,but:

[0056] (2)

[0057] in, is the residual chlorine concentration of the available dilution solution, ranging from 2 4mg / L; is the residual chlorine safety value, the range is 0.05 0.3mg / L; is the effective volume of the first dilution tank, is the effective volume of the second dilution tank; The residual chlorine increase value is a manually set residual chlorine concentration value, which refers to the value of the increase in the residual chlorine concentration of tap water in the water tank after one chlorine addition. The range is 0.1 0.4mg / L; When the residual chlorine concentration of tap water in the water tank is equal to or lower than the residual chlorine safety value, the water level of the water tank is detected; is the horizontal longitudinal cross-sectional area of ​​the water tank.

[0058] Example 3

[0059] Based on Example 2, this example is further described in combination with specific data. Assume that the volume of the managed water tank 5 is The horizontal longitudinal cross-sectional area is .

[0060] Specifically, in step 1, a low-range online residual chlorine meter is used to monitor the residual chlorine concentration of the tap water in the water tank 5 in real time, and the residual chlorine safety value is set to 0.15 mg / L. At a certain moment, the residual chlorine meter 28 detects that the residual chlorine concentration of the tap water in the water tank 5 is reduced to 0.15 mg / L, so the intelligent controller 32 starts the chlorine addition work for the tap water in the water tank 5.

[0061] In the step 2, the sensor for detecting the effective chlorine content of the sodium hypochlorite stock solution is a high-range online sodium hypochlorite detector 30 specifically used to detect the effective chlorine content of high-concentration sodium hypochlorite stock solution. Normally, the sodium hypochlorite detector 30 is in a closed state. When the intelligent controller 32 starts to add chlorine to the tap water in the water tank 5, the intelligent controller 32 turns on the sodium hypochlorite detector 30 and the detection pump 31 to start the detection of the sodium hypochlorite stock solution in the stock solution storage tank 8. After the detection, the intelligent controller 32 turns off the sodium hypochlorite detector 30 and the detection pump 31; the result of the sodium hypochlorite detector 30 detecting the effective chlorine content of the sodium hypochlorite stock solution in this embodiment is 63.8 g / L.

[0062] In step 3, the volume of the sampled sodium hypochlorite stock solution is calculated by the data processing module 36 of the intelligent controller 32, and the specific calculation method is:

[0063] (1)

[0064] In formula (1), The volume of sodium hypochlorite stock solution that needs to be sampled in order to achieve the purpose of adding chlorine; is the available chlorine content of the sodium hypochlorite stock solution detected in step S2, where In order to convert its unit into mg / L; is the residual chlorine increase value, which is a residual chlorine concentration value set artificially, referring to the value of the residual chlorine concentration of tap water in the water tank 5 increased after one chlorine supplement. Set to 0.2 mg / L; When the residual chlorine concentration of the tap water in the water tank 5 is equal to or lower than the residual chlorine safety value, the water level meter 26 detects the water level of the water tank 5 in real time, which is 1.134m in this embodiment. is the horizontal longitudinal cross-sectional area of ​​the water tank 5, which is 15 in this embodiment. , where multiply by To convert water volume units into .

[0065] In step 4, the intelligent controller 32 uses the sampling pump 11 to transfer 53.3 The sodium hypochlorite stock solution is added to the first dilution tank 14, and then the dilution work in the first dilution tank 14 is started. The dilution work in the first dilution tank 14 includes two actions: adding dilution water and stirring. The dilution water is taken from the water tank 5. The intelligent controller 32 starts the water adding pump 21 and the corresponding first water adding solenoid valve 24 to add water to the first dilution tank 14. When the water level therein reaches the set position, the dilution tank water level switch 18 sends a signal to the intelligent controller 32 to stop adding water. After receiving the signal, the intelligent controller 32 turns off the water adding pump 21 and the first water adding solenoid valve 24, and starts the corresponding agitator 19 at the same time. After the stirring is completed, the dilution work in the first dilution tank 14 is ended. The solution obtained after dilution is called the intermediate dilution solution.

[0066] In the step 5, the intelligent controller 32 outputs the intermediate dilution liquid of the first dilution tank 14 to the second dilution tank 15 in multiple quantitative steps through the liquid adding pump 17, and then starts the dilution work in the second dilution tank 15, specifically: start the water adding pump 21 and the second water adding solenoid valve 25 to add water to the second dilution tank 15, the dilution water is taken from the water tank 5, when the water level in the second dilution tank 15 reaches the set position, the dilution tank water level switch 18 sends a signal to the intelligent controller 32 to stop adding water, after receiving the signal, the intelligent controller 32 turns off the water adding pump 21 and the second water adding solenoid valve 25, and starts the corresponding agitator 19 at the same time, and ends the dilution work in the second dilution tank 15 after the stirring is completed. The solution obtained after dilution is called usable dilution liquid, and the concentration is 2 4 mg / L, preferably 3 mg / L;

[0067] Assume that the volume of the intermediate dilution liquid output from the first dilution tank 14 to the second dilution tank 15 each time is ,but:

[0068]

[0069] (2)

[0070] In formula (2), is the residual chlorine concentration of the available diluent, which is set to 3 mg / L in this embodiment; is the residual chlorine safety value, which is set to 0.15 mg / L in this embodiment; is the effective volume of the first dilution tank, is the effective volume of the second dilution tank. The effective volume refers to the volume of the solution in the dilution tank when the dilution tank water level switch sends a signal to stop adding water. and Both are 18.5L; , and The calculation result shows that the volume of the intermediate dilution liquid output from the first dilution tank 14 to the second dilution tank 15 is 287 ;

[0071] The intelligent controller 32 controls to repeatedly perform three actions of adding liquid, diluting and dosing. Here, adding liquid refers to adding the intermediate dilution liquid in the first dilution tank 14 to the second dilution tank 15 in a quantitative manner, dilution refers to the dilution work in the second dilution tank 15, and dosing refers to adding the available dilution liquid in the second dilution tank 15 to the water tank 5; when the intermediate dilution liquid in the first dilution tank 14 is used up and the available dilution liquid in the second dilution tank 15 is all added to the water tank 5, the work of adding chlorine to the tap water in the water tank 5 is finished.

[0072] The above description is only a specific implementation mode of the present invention. Any feature disclosed in this specification, unless otherwise stated, can be replaced by other alternative features that are equivalent or have similar purposes; all the disclosed features, or all the steps in the methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

Claims

1. A device for adding chlorine to a secondary water supply storage device, comprising a stock solution storage device (1), a sampling assembly (2), a dilution device (3), a dosing assembly (4), a monitoring device (6) and a control device (7), wherein the stock solution storage device (1) is connected to the dilution device (3) via the sampling assembly (2), the dilution device (3) is connected to a water tank (5) via the dosing assembly (4), the monitoring device (6) is installed on the water tank (5) or the stock solution storage device (1), and the control device (7) is respectively connected to the stock solution storage device (1), the sampling assembly (2), the dilution device (3), the dosing assembly (4) and the monitoring device (6); The dilution device (3) comprises a first dilution tank (14), a second dilution tank (15), a liquid adding pipe (16) and a liquid adding pump (17). A water level switch (18) and a stirrer (19) are provided in the first dilution tank (14) and the second dilution tank (15). The first dilution tank (14) is connected to the stock liquid storage tank (8) through a sampling pipe (10). The second dilution tank (15) is connected to the water tank (5) through a dosing pipe (12). Both ends of the liquid adding pipe (16) are connected to the first dilution tank (14) and the second dilution tank (15). The liquid adding pump (17) is installed on the liquid adding pipe (16). The liquid adding pump (17), the water level switch (18) and the stirrer (19) are all connected to the control device (7). It also includes a drain pipe (40). An overflow pipe (41) is provided on the upper side of each of the first dilution tank (14) and the second dilution tank (15). One end of the overflow pipe (41) is connected to the corresponding dilution tank, and the other end is connected to the drain pipe (40). The liquid inlet of the overflow pipe (41) in the corresponding dilution tank is called an overflow port. In the first dilution tank (14), the overflow port of the overflow pipe (41) is located lower than the water outlet of the sampling tube (10) and the first water supply branch pipe (22). In the second dilution tank (15), the overflow port of the overflow pipe (41) is located lower than the water outlet of the liquid supply pipe (16) and the second water supply branch pipe (23). The monitoring device (6) comprises a water level meter (26), a residual chlorine monitoring component and a sodium hypochlorite stock solution detection component; the water level meter (26) is installed in the water tank (5); the residual chlorine monitoring component comprises a first water diversion pipe (27) and a residual chlorine meter (28); one end of the first water diversion pipe (27) is connected to the lower part of the side of the water tank (5), and the other end is connected to the drainage pipe (40); the residual chlorine meter (28) is installed on the first water diversion pipe (27); the sodium hypochlorite stock solution detection component comprises a first water diversion pipe (27) and a residual chlorine meter (28); Two water inlet pipes (29), a sodium hypochlorite detector (30) and a detection pump (31); one end of the second water inlet pipe (29) is connected to the lower side of the stock liquid storage tank (8), and the other end is connected to the drainage pipe (40); the sodium hypochlorite detector (30) and the detection pump (31) are both installed on the second water inlet pipe (29); the water level meter (26), the residual chlorine meter (28), the sodium hypochlorite detector (30) and the detection pump (31) are all connected to the control device (7).

2. A device for adding chlorine to secondary water supply and storage equipment according to claim 1, characterized in that: The raw liquid storage device (1) comprises a raw liquid storage tank (8) and a water level detection switch (9); the water level detection switch (9) is installed in the raw liquid storage tank (8) and connected to the control device (7).

3. A device for adding chlorine to secondary water supply and storage equipment according to claim 2, characterized in that: The sampling assembly (2) comprises a sampling tube (10) and a sampling pump (11). One end of the sampling tube (10) is connected to the stock solution storage tank (8), and the other end is connected to the dilution device (3). The sampling pump (11) is installed on the sampling tube (10) and connected to the control device (7).

4. A device for adding chlorine to secondary water supply and storage equipment according to claim 1 or 2, characterized in that: The dosing assembly (4) comprises a dosing pipe (12) and a dosing pump (13); one end of the dosing pipe (12) is connected to the dilution device (3), and the other end is connected to the water tank (5); the dosing pump (13) is installed on the dosing pipe (12) and connected to the control device (7).

5. The device for adding chlorine to secondary water supply and storage equipment according to claim 3, characterized in that: The dosing assembly (4) comprises a dosing pipe (12) and a dosing pump (13); one end of the dosing pipe (12) is connected to the dilution device (3), and the other end is connected to the water tank (5); the dosing pump (13) is installed on the dosing pipe (12) and connected to the control device (7).

6. A device for adding chlorine to secondary water supply and storage equipment according to claim 1, 2 or 3, characterized in that: The dilution device (3) further comprises a water adding assembly comprising a water adding main pipe (20), a water adding pump (21), a first water adding branch pipe (22), a second water adding branch pipe (23), a first water adding solenoid valve (24), and a second water adding solenoid valve (25); one end of the water adding main pipe (20) is in communication with the water tank (5); the other end of the water adding main pipe (20) is in communication with the first dilution tank (14) and the second dilution tank (15) through the first water adding branch pipe (22) and the second water adding branch pipe (23); the water adding pump (21) is mounted on the water adding main pipe (20); the first water adding solenoid valve (24) and the second water adding solenoid valve (25) are mounted on the first water adding branch pipe (22) and the second water adding branch pipe (23); the water adding pump (21), the first water adding solenoid valve (24), and the second water adding solenoid valve (25) are all connected to the control device (7).

7. The device for adding chlorine to secondary water supply and storage equipment according to claim 4, characterized in that: The dilution device (3) further comprises a water adding assembly comprising a water adding main pipe (20), a water adding pump (21), a first water adding branch pipe (22), a second water adding branch pipe (23), a first water adding solenoid valve (24), and a second water adding solenoid valve (25); one end of the water adding main pipe (20) is in communication with the water tank (5); the other end of the water adding main pipe (20) is in communication with the first dilution tank (14) and the second dilution tank (15) through the first water adding branch pipe (22) and the second water adding branch pipe (23); the water adding pump (21) is mounted on the water adding main pipe (20); the first water adding solenoid valve (24) and the second water adding solenoid valve (25) are mounted on the first water adding branch pipe (22) and the second water adding branch pipe (23); the water adding pump (21), the first water adding solenoid valve (24), and the second water adding solenoid valve (25) are all connected to the control device (7).

8. The device for adding chlorine to secondary water supply and storage equipment according to claim 5, characterized in that: The dilution device (3) further comprises a water adding assembly comprising a water adding main pipe (20), a water adding pump (21), a first water adding branch pipe (22), a second water adding branch pipe (23), a first water adding solenoid valve (24), and a second water adding solenoid valve (25); one end of the water adding main pipe (20) is in communication with the water tank (5); the other end of the water adding main pipe (20) is in communication with the first dilution tank (14) and the second dilution tank (15) through the first water adding branch pipe (22) and the second water adding branch pipe (23); the water adding pump (21) is mounted on the water adding main pipe (20); the first water adding solenoid valve (24) and the second water adding solenoid valve (25) are mounted on the first water adding branch pipe (22) and the second water adding branch pipe (23); the water adding pump (21), the first water adding solenoid valve (24), and the second water adding solenoid valve (25) are all connected to the control device (7).

9. The device for adding chlorine to secondary water supply and storage equipment according to claim 8, characterized in that: The control device (7) comprises an intelligent controller (32) and a remote controller (33); the intelligent controller (32) comprises a data acquisition module (34), a data storage module (35), a data processing module (36), a control module (37) and a communication module (38); the data storage module (35) is connected to the data acquisition module (34), the data processing module (36) and the communication module (38); the data processing module (36) is also connected to the control module (37) and the communication module (38) respectively. The communication module (38) is also connected to the remote controller (33); the data acquisition module (34) is connected to the water level detection switch (9), the water level switch (18), the water level meter (26), the residual chlorine meter (28) and the sodium hypochlorite detector (30); and the control module (37) is connected to the agitator (19), the sampling pump (11), the liquid adding pump (17), the water adding pump (21), the dosing pump (13), the detection pump (31), the first water adding solenoid valve (24) and the second water adding solenoid valve (25).

Images