Integrated chlorine supplementing device for water supply pipe network

Abstract

The utility model relates to an integrated chlorine supplementing device for a water supply network, and belongs to the technical field of tap water supply. An inner cavity of the storage box is divided into an upper-layer liquid storage cavity, a middle-layer heat exchange cavity and a bottom-layer liquid outlet cavity by the upper partition plate and the lower partition plate, a dosing pump, a remote flow meter and a liquid drainage one-way valve are installed on the main dosing pipe, an end connecting pipe A communicated with the middle-layer heat exchange cavity is arranged on the left side face of the storage box, and an upper connecting flange A is arranged on the end connecting pipe A; an end connecting pipe B communicating with the middle-layer heat exchange cavity is arranged on the right side face of the storage box, and an upper connecting flange B is arranged on the end connecting pipe B. The sodium hypochlorite storage tank has the beneficial effects that a sodium hypochlorite solution can be injected into the storage tank through the liquid injection port, tap water flows into the middle-layer heat exchange cavity in the storage tank and then flows out from the middle-layer heat exchange cavity, and in the process, the tap water with lower temperature in the tap water main pipeline can cool down sodium hypochlorite in the storage tank, so that the sodium hypochlorite is prevented from being damaged. The stability of the solution is maintained, and the decomposition speed can be effectively slowed down.

Description

Technical Field

[0001] This utility model relates to an integrated chlorination device for water supply networks, belonging to the field of tap water supply technology. Background Technology

[0002] Tap water flows through long pipelines from the water treatment plant to the user. Old iron pipes are prone to rust and bacterial growth, leading to secondary pollution. Residual chlorine (residual hypochlorous acid or chlorine compounds) can continuously exert its antibacterial effect during water transmission, ensuring the stability of water quality during transport. However, disinfectants in tap water decay continuously during distribution due to various factors. Increased distribution time further accelerates this decay, resulting in disinfectant concentrations in the end-point water supply network failing to meet national standards. This poses a serious risk of bacterial contamination and threatens drinking water safety.

[0003] A search revealed a utility model patent with patent number 202222635503.9, which discloses an integrated chlorination device for water supply networks. It includes an underground disinfectant storage tank and a surface-mounted housing. The housing houses a metering and dosing module, an online instrument module, a control and processing module, a disinfectant dosing pipe, and an inlet pipe. The metering and dosing module is connected between the disinfectant storage tank and the dosing pipe. The online instrument module is connected to the inlet pipe and detects the flow rate and residual chlorine concentration in the inlet pipe, transmitting the data to the control and processing module. The control and processing module calculates the flow rate of disinfectant to be added to the water supply pipe and transmits a control signal to the metering and dosing module. The metering and dosing module then draws disinfectant from the storage tank and delivers it into the water supply pipe through the dosing pipe.

[0004] While the aforementioned patent can achieve the function of chlorine supplementation, the current technology is not comprehensive and has the following drawbacks: The stability of sodium hypochlorite solution is closely related to temperature. Different temperature ranges have a significant impact on its decomposition rate, retention of effective components, and safety. Currently, it is necessary to keep its storage temperature as low as possible below room temperature in order to avoid thermal decomposition and evaporation of the solution as much as possible. The decomposition of sodium hypochlorite solution will lead to a rapid loss of effective chlorine content.

[0005] To solve one of the above problems, there is an urgent need for an integrated chlorination device for water supply networks. Utility Model Content

[0006] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to make tap water flow into the middle heat exchange chamber of the storage tank and then flow out from the middle heat exchange chamber. During this process, the tap water with a lower temperature in the main tap water pipeline can cool down the sodium hypochlorite in the storage tank, maintain the stability of the solution, and effectively slow down the decomposition rate. Therefore, an integrated chlorination device for water supply network is provided.

[0007] The integrated chlorination device for water supply networks described in this utility model includes a storage tank. The storage tank has an upper partition, a lower partition, and an internal circulation pipe spaced apart at its bottom. The upper and lower partitions divide the inner cavity of the storage tank into an upper liquid storage chamber, a middle heat exchange chamber, and a bottom liquid outlet chamber. The upper end of the internal circulation pipe passes through the upper partition and communicates with the upper liquid storage chamber, while the lower end of the internal circulation pipe passes through the lower partition and communicates with the bottom liquid outlet chamber. The storage tank is equipped with an injection port connected to the upper liquid storage chamber and a one-way air inlet pipe. The liquid outlet has a sealing cap, the one-way air inlet pipe has a one-way air inlet valve, the bottom of the storage tank is provided with a drain port that communicates with the bottom liquid outlet chamber, the drain port is connected to the dosing main pipe, the dosing main pipe is equipped with a dosing pump, a remote flow meter and a drain one-way valve, the left side of the storage tank is provided with an end connecting pipe A that communicates with the middle heat exchange chamber, the end connecting pipe A has an upper connecting flange A, the right side of the storage tank is provided with an end connecting pipe B that communicates with the middle heat exchange chamber, the end connecting pipe B has an upper connecting flange B.

[0008] During installation, the end connecting pipes A and B are respectively installed on the main water supply pipe of the tap water through corresponding flanges. Sodium hypochlorite solution can be injected into the storage tank through the injection port. When the sodium hypochlorite solution flows out of the storage tank, it can be replenished with air through the one-way air inlet pipe to prevent the storage tank from being vacuumed. Tap water flows into the middle heat exchange chamber in the storage tank and then flows out from the middle heat exchange chamber. During this process, the tap water with a lower temperature in the main water supply line can cool down the sodium hypochlorite in the storage tank, maintain the stability of the solution, and effectively slow down the decomposition rate.

[0009] Preferably, it also includes a reflux pipe, on which an electrically controlled regulating valve is installed. The reflux pipe is connected to the outlet of the dosing pump, and the other end of the reflux pipe is connected to the upper storage chamber of the storage tank. The main dosing pipe and the reflux pipe are made of stainless steel of the same specifications.

[0010] Preferably, a residual chlorine sensor is installed on the main water supply pipe B, the residual chlorine sensor is electrically connected to the signal input terminal of the controller, and the electrically controlled regulating valve is electrically connected to the signal output terminal of the controller.

[0011] The residual chlorine concentration is monitored in real time by an online sensor. The dosing pump is in a normally open state, and the opening of the electronically controlled regulating valve is at its maximum. All the sodium hypochlorite solution pumped out by the dosing pump flows back to the upper storage chamber of the storage tank through the return pipe. The sodium hypochlorite solution in the upper storage chamber then flows into the lower storage chamber through the internal circulation pipe, forming a circulation flow. The internal circulation pipe increases the heat exchange area, which can effectively cool the sodium hypochlorite solution in the storage tank.

[0012] When the residual chlorine sensor detects that the residual chlorine content in the tap water in the main water supply pipe B is lower than the set level, the controller adjusts the opening of the electrically controlled regulating valve to allow some sodium hypochlorite solution to flow back through the return pipe, and another portion to flow through the main dosing pipe, remote flow meter, and drain check valve into the pipeline mixer for chlorination replenishment. The remote flow meter detects the flow rate of the sodium hypochlorite solution injected into the pipeline mixer. The lower the residual chlorine content in the tap water in the main water supply pipe B detected by the residual chlorine sensor, the smaller the opening of the electrically controlled regulating valve, and the greater the flow rate detected by the remote flow meter.

[0013] Preferably, the system also includes a tee connector A and a tee connector B. The first interfaces of tee connectors A and B are respectively connected to the main water supply pipe A and the pipe mixer. The pipe mixer is connected to the main water supply pipe B. The second interfaces of tee connector A and B are respectively connected to connecting flange A and connecting flange B via main valve B and main valve C. A second branch pipe is connected between the third interfaces of tee connector A and tee connector B, and main valve A is installed on the second branch pipe. In summer, main valve A needs to be closed and main valves B and C need to be opened. In winter, the temperature in the north is low, and there is no need to cool the sodium hypochlorite solution in the storage tank. Therefore, main valves B and C can be closed and main valve A can be opened to extend the life of the storage tank.

[0014] Preferably, the pipeline mixer has a main inlet, a main outlet, and a side inlet. The side inlet is connected to the main dosing pipe, and the pipeline mixer is connected between the tee connector B and the main water supply pipe B. By changing the flow state of the fluid through internal fixed components or mixing elements such as spiral vanes or perforated plates, different fluids are fully dispersed, collided, and uniformly mixed within the pipeline. It adopts a static mixing principle, requiring no mechanical drive, resulting in high stability and low maintenance costs.

[0015] Preferably, the pipe mixer is a tubular static mixer with a mixing plate inside, and the mixing plate is of type SD.

[0016] Preferably, the electrically controlled regulating valve is a remote-controlled metal rotor flow meter.

[0017] Preferably, the controller is a PLC, a DCS controller, or a microcontroller.

[0018] Preferably, the storage tank is equipped with a level gauge. Observing the level of sodium hypochlorite solution in the storage tank facilitates timely replenishment.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The integrated chlorination device for water supply networks described in this utility model can inject sodium hypochlorite solution into the storage tank through the injection port. Tap water flows into the middle heat exchange chamber of the storage tank and then flows out from the middle heat exchange chamber. During this process, the lower temperature of the tap water in the main water supply line can cool down the sodium hypochlorite in the storage tank, maintain the stability of the solution, and effectively slow down the decomposition rate.

[0021] The integrated chlorination device for water supply networks described in this utility model uses an online sensor to detect the residual chlorine concentration in real time. The dosing pump is normally open, and the electrically controlled regulating valve is at its maximum opening. All the sodium hypochlorite solution pumped out by the dosing pump flows back to the upper storage chamber of the storage tank through the return pipe. The sodium hypochlorite solution in the upper storage chamber then flows into the lower storage chamber through the internal circulation pipe, forming a circulating flow. The internal circulation pipe increases the heat exchange area, which can effectively cool the sodium hypochlorite solution in the storage tank.

[0022] The integrated chlorination device for water supply networks described in this utility model has a main inlet, a main outlet, and a side inlet in the pipeline mixer. It adopts a static mixing principle, requires no mechanical drive, has high stability, and low maintenance costs. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of the storage box of this utility model;

[0026] Figure 3 This is a structural diagram of a pipe mixer.

[0027] In the diagram: 1. Main water supply pipe A; 2. Main water supply pipe B; 3. T-joint A; 4. T-joint B; 5. End connection pipe A; 6. Second branch pipe; 7. Storage tank; 7.1. Upper partition; 7.2. Lower partition; 7.3. Internal circulation pipe; 7.4. Injection port; 7.5. One-way air inlet pipe; 8. Dosing pump; 9. Dosing main pipe; 10. Electrically controlled regulating valve; 11. Remote flow meter; 12. Pipeline mixer; 13. Main valve A; 14. Main valve B; 15. Main valve C; 16. Drain check valve; 17. Return pipe; 18. Residual chlorine sensor; 19. Controller. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0029] Example 1, such as Figure 1-2 As shown, the integrated chlorination device for a water supply network includes a storage tank 7. The bottom of the storage tank 7 is spaced apart by an upper partition 7.1, a lower partition 7.2, and an internal circulation pipe 7.3. The upper partition 7.1 and lower partition 7.2 divide the inner cavity of the storage tank 7 into an upper liquid storage chamber, a middle heat exchange chamber, and a bottom liquid outlet chamber. The upper end of the internal circulation pipe 7.3 passes through the upper partition 7.1 and communicates with the upper liquid storage chamber, while the lower end of the internal circulation pipe 7.3 passes through the lower partition 7.2 and communicates with the bottom liquid outlet chamber. The storage tank 7 is equipped with an injection port 7.4 connected to the upper liquid storage chamber and a one-way air inlet pipe 7. 5. The injection port 7.4 has a sealing cap, the one-way air inlet pipe 7.5 has a one-way air inlet valve, the bottom of the storage tank 7 is provided with a drain port that communicates with the bottom liquid outlet chamber, the drain port is connected to the dosing main pipe 9, the dosing main pipe 9 is equipped with a dosing pump 8, a remote flow meter 11, and a drain one-way valve 16, the left side of the storage tank 7 is provided with an end connecting pipe A5 that communicates with the middle heat exchange chamber, the end connecting pipe A5 has an upper connecting flange A, the right side of the storage tank 7 is provided with an end connecting pipe B that communicates with the middle heat exchange chamber, the end connecting pipe B has an upper connecting flange B.

[0030] The stability of sodium hypochlorite solution is closely related to temperature. Different temperature ranges have a significant impact on its decomposition rate, retention of effective components, and safety. Currently, it is necessary to keep its storage temperature below 25 degrees Celsius as much as possible to avoid thermal decomposition and evaporation of the solution. The decomposition of sodium hypochlorite solution will lead to a rapid loss of effective chlorine content.

[0031] During installation, the end connecting pipes A5 and B are respectively installed on the main water supply pipe of the tap water through corresponding flanges. Sodium hypochlorite solution can be injected into the storage tank 7 through the injection port 7.4. When the sodium hypochlorite solution flows out of the storage tank 7, it can be replenished with air through the one-way air inlet pipe 7.5 to prevent the storage tank 7 from being evacuated. Tap water flows into the middle heat exchange chamber in the storage tank 7 and then flows out from the middle heat exchange chamber. During this process, the tap water with a lower temperature in the main water supply pipe can cool down the sodium hypochlorite in the storage tank 7, maintain the stability of the solution, and effectively slow down the decomposition rate.

[0032] Example 2, as Figure 1-3As shown, the integrated chlorination device for a water supply network includes a storage tank 7. The bottom of the storage tank 7 is spaced apart by an upper partition 7.1, a lower partition 7.2, and an internal circulation pipe 7.3. The upper partition 7.1 and lower partition 7.2 divide the inner cavity of the storage tank 7 into an upper liquid storage chamber, a middle heat exchange chamber, and a bottom liquid outlet chamber. The upper end of the internal circulation pipe 7.3 passes through the upper partition 7.1 and communicates with the upper liquid storage chamber, while the lower end of the internal circulation pipe 7.3 passes through the lower partition 7.2 and communicates with the bottom liquid outlet chamber. The storage tank 7 is equipped with an injection port 7.4 connected to the upper liquid storage chamber and a one-way air inlet pipe 7. 5. The injection port 7.4 has a sealing cap, the one-way air inlet pipe 7.5 has a one-way air inlet valve, the bottom of the storage tank 7 is provided with a drain port that communicates with the bottom liquid outlet chamber, the drain port is connected to the dosing main pipe 9, the dosing main pipe 9 is equipped with a dosing pump 8, a remote flow meter 11, and a drain one-way valve 16, the left side of the storage tank 7 is provided with an end connecting pipe A5 that communicates with the middle heat exchange chamber, the end connecting pipe A5 has an upper connecting flange A, the right side of the storage tank 7 is provided with an end connecting pipe B that communicates with the middle heat exchange chamber, the end connecting pipe B has an upper connecting flange B.

[0033] Furthermore, it also includes a return pipe 17, on which an electrically controlled regulating valve 10 is installed. The return pipe 17 is connected to the outlet of the dosing pump 8, and the other end of the return pipe 17 is connected to the upper storage chamber of the storage tank 7. The main dosing pipe 9 and the return pipe 17 are made of stainless steel pipe of the same specifications.

[0034] Furthermore, a residual chlorine sensor 18 is installed on the main water supply pipe B2. The residual chlorine sensor 18 is electrically connected to the signal input terminal of the controller 19, and the electrically controlled regulating valve 10 is electrically connected to the signal output terminal of the controller 19.

[0035] The residual chlorine concentration is detected in real time by an online sensor. The dosing pump 8 is in a normally open state, and the opening of the electronically controlled regulating valve 10 is at its maximum. All the sodium hypochlorite solution pumped out by the dosing pump 8 flows back to the upper storage chamber of the storage tank 7 through the return pipe 17. The sodium hypochlorite solution in the upper storage chamber then flows into the lower storage chamber through the internal circulation pipe 7.3, forming a circulation flow. The setting of the internal circulation pipe 7.3 increases the heat exchange area, which can effectively cool the sodium hypochlorite solution in the storage tank 7.

[0036] When the residual chlorine sensor 18 detects that the residual chlorine content in the tap water in the main water supply pipe B2 is lower than the set level, the controller 19 adjusts the opening of the electrically controlled regulating valve 10 to allow some sodium hypochlorite solution to flow back through the return pipe 17, and some sodium hypochlorite solution to enter the pipeline mixer 12 through the dosing main pipe 9, the remote flow meter 11, and the drain check valve 16 for chlorination replenishment. The remote flow meter 11 is used to detect the flow rate of the sodium hypochlorite solution injected into the pipeline mixer 12. The lower the residual chlorine content in the tap water in the main water supply pipe B2 detected by the residual chlorine sensor 18, the smaller the opening of the electrically controlled regulating valve 10, and the larger the flow rate detected by the remote flow meter 11.

[0037] Furthermore, it also includes tee connectors A3 and B4. The first interfaces of tee connectors A3 and B4 are respectively connected to the main water supply pipe A1 and the pipe mixer 12. The pipe mixer 12 is connected to the main water supply pipe B2. The second interfaces of tee connectors A3 and B4 are respectively connected to connecting flange A and connecting flange B through main valves B14 and C15. A second branch pipe 6 is connected between the third interfaces of tee connectors A3 and B4, and the main valve A13 is installed on the second branch pipe 6. In summer, it is necessary to close the main valve A13 and open the main valves B14 and C15. In winter, the temperature in the north is low, and there is no need to cool the sodium hypochlorite solution in the storage tank 7. Therefore, the main valves B14 and C15 can be closed and the main valve A13 can be opened to extend the life of the storage tank 7.

[0038] Furthermore, the pipeline mixer 12 has a main inlet, a main outlet, and a side inlet. The side inlet is connected to the main dosing pipe 9, and the pipeline mixer 12 is connected between the tee connector B4 and the main water supply pipe B2. By changing the flow state of the fluid through internal fixed components or mixing elements such as spiral vanes or perforated plates, different fluids are fully dispersed, collided, and uniformly mixed within the pipeline. It adopts a static mixing principle, requiring no mechanical drive, resulting in high stability and low maintenance costs.

[0039] Furthermore, the pipe mixer 12 is a pipe-type static mixer, which is equipped with a mixing plate, and the mixing plate adopts the SD type.

[0040] Furthermore, the electrically controlled regulating valve 10 is a remote metal rotor flow meter.

[0041] Furthermore, the controller 19 is a PLC controller.

[0042] In this embodiment, the modification of the prior art by this specific implementation lies in the hardware part. At the same time, the computer program involved is a simple program that can be easily implemented by those skilled in the art using existing computer program development platforms and well-known programming methods. In this article, the electronically controlled regulating valve 10, residual chlorine sensor 18 and controller 19 are only a simple use of their functions and do not involve improvements to the methods or programs.

[0043] Furthermore, a level gauge is installed on the storage tank 7. This allows for observation of the sodium hypochlorite solution level in the storage tank 7, facilitating timely replenishment.

[0044] The integrated chlorination device for water supply networks described in this utility model can inject sodium hypochlorite solution into the storage tank through the injection port. Tap water flows into the middle heat exchange chamber of the storage tank and then flows out from the middle heat exchange chamber. During this process, the lower temperature of the tap water in the main water supply line can cool down the sodium hypochlorite in the storage tank, maintain the stability of the solution, and effectively slow down the decomposition rate.

[0045] The integrated chlorination device for water supply networks described in this utility model uses an online sensor to detect the residual chlorine concentration in real time. The dosing pump is normally open, and the electrically controlled regulating valve is at its maximum opening. All the sodium hypochlorite solution pumped out by the dosing pump flows back to the upper storage chamber of the storage tank through the return pipe. The sodium hypochlorite solution in the upper storage chamber then flows into the lower storage chamber through the internal circulation pipe, forming a circulating flow. The internal circulation pipe increases the heat exchange area, which can effectively cool the sodium hypochlorite solution in the storage tank.

[0046] The integrated chlorination device for water supply networks described in this utility model has a main inlet, a main outlet, and a side inlet in the pipeline mixer. It adopts a static mixing principle, requires no mechanical drive, has high stability, and low maintenance costs.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0048] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A water supply network integrated chlorine supplementing device comprising a storage tank, characterized in that: The storage tank has an upper partition, a lower partition, and an internal circulation pipe spaced at intervals on its inner bottom. The upper and lower partitions divide the inner cavity of the storage tank into an upper liquid storage chamber, a middle heat exchange chamber, and a bottom liquid outlet chamber. The upper end of the internal circulation pipe passes through the upper partition and connects to the upper liquid storage chamber, while the lower end of the internal circulation pipe passes through the lower partition and connects to the bottom liquid outlet chamber. The storage tank is equipped with a liquid injection port connected to the upper liquid storage chamber and a one-way air inlet pipe. The liquid injection port has a sealing cap, and the one-way air inlet... The pipe has a one-way air inlet valve. The bottom of the storage tank is provided with a drain port that communicates with the bottom liquid outlet chamber. The drain port is connected to the main dosing pipe. The main dosing pipe is equipped with a dosing pump, a remote flow meter, and a drain one-way valve. The left side of the storage tank is provided with an end connecting pipe A that communicates with the middle heat exchange chamber. The end connecting pipe A has an upper connecting flange A. The right side of the storage tank is provided with an end connecting pipe B that communicates with the middle heat exchange chamber. The end connecting pipe B has an upper connecting flange B.

2. The water supply network integrated chlorine supplementing device according to claim 1, characterized in that, It also includes a return pipe, on which an electrically controlled regulating valve is installed. The return pipe is connected to the outlet of the dosing pump, and the other end of the return pipe is connected to the upper storage chamber of the storage tank. The main dosing pipe and the return pipe are made of stainless steel pipe of the same specifications.

3. The water supply network integrated chlorine supplementing device according to claim 2, characterized in that, A residual chlorine sensor is installed on the main water supply pipe B. The residual chlorine sensor is electrically connected to the signal input terminal of the controller, and the electrically controlled regulating valve is electrically connected to the signal output terminal of the controller.

4. The water supply network integrated chlorine supplementing device according to claim 3, characterized in that, It also includes a tee connector A and a tee connector B. The first interfaces of the tee connector A and the tee connector B are respectively connected to the main water supply pipe A and the pipe mixer. The pipe mixer is connected to the main water supply pipe B. The second interfaces of the tee connector A and the tee connector B are respectively connected to the connecting flange A and the connecting flange B through the main valve B and the main valve C. A second branch pipe is connected between the third interfaces of the tee connector A and the tee connector B. The main valve A is installed on the second branch pipe.

5. The water supply network integrated chlorine supplementing device according to claim 4, characterized in that, The pipeline mixer has a main inlet, a main outlet, and a side inlet. The side inlet is connected to the main dosing pipe, and the pipeline mixer is connected between the tee connector B and the main water supply pipe B.

6. The integrated chlorination device for water supply networks according to claim 5, characterized in that, The pipeline mixer is a tubular static mixer with a mixing plate inside.

7. The water supply network integrated chlorine supplementing device according to claim 6, characterized in that, The electrically controlled regulating valve is a remote-controlled metal rotor flow meter.

8. The integrated chlorination device for water supply networks according to claim 7, characterized in that, The controller is a PLC, DCS controller, or microcontroller.

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