Chemical feeding device for cooling water pipeline of central air conditioner
By monitoring cooling water quality with pH and ORP sensors and controlling multiple dosing components with a central controller, the problem of limited chemical selection in traditional methods is solved. This enables automated dosing of cooling water pipelines, improves sterilization and descaling effects and dosing efficiency, and reduces operating costs.
Patent Information
- Application Number
- CN202520143621.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Traditional central air conditioning cooling water pipes use a single type of chemical agent, which cannot comprehensively and effectively cope with the complex and ever-changing microbial communities. Furthermore, the lack of accurate testing leads to insufficient or excessive dosage, affecting the cooling effect and causing waste.
The system uses pH and ORP sensors to monitor cooling water quality in real time. The central controller controls various dosing components to dispense different chemicals based on the detection data, including corrosion inhibitors, scale inhibitors, oxidizing bactericides, and non-oxidizing bactericides, thus achieving automated dosing.
It enables timely addition of chemicals based on changes in water quality, reducing chemical waste, improving the sterilization and descaling effect, lowering operating costs, reducing reliance on manual labor, and ensuring cooling water quality.
Smart Images
Figure CN223866471U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of central air conditioning technology, and in particular to a chemical dosing device for cooling water pipes of a central air conditioning system. Background Technology
[0002] The cooling water in the central air conditioning cooling water pipes is recycled. Long-term use of the cooling water can lead to impurities and bacterial growth, which seriously affects the cooling effect and performance of the cooling water system. In order to maintain the normal operation of the central air conditioning, various agents such as descaling agents and bactericides need to be added to the cooling water pipes. In the traditional way, the choice of agents is often relatively simple and cannot comprehensively and effectively deal with the complex and ever-changing microbial communities. Moreover, due to the lack of accurate testing of the cooling water, staff often rely on experience to add agents, resulting in insufficient dosage leading to poor sterilization effect, or excessive dosage leading to waste of agents. Summary of the Invention
[0003] In view of this, this application proposes a central air conditioning cooling water pipe dosing device, including: cooling water pipe, first dosing component, second dosing component, and central controller;
[0004] The inlet end of the cooling water pipe is suitable for connecting to the outlet end of the central air conditioner to extract cooling water from the central air conditioner. The outlet end of the cooling water pipe is connected to the inlet end of the central air conditioner to return the cooling water to the central air conditioner. The inlet end of the cooling water pipe is equipped with a first solenoid valve, and the outlet end of the cooling water pipe is equipped with a second solenoid valve.
[0005] Both the first and second dosing components are installed on the cooling water pipeline. The central controller is electrically connected to the first and second dosing components respectively, and is suitable for controlling the first and second dosing components to perform dosing operations on the cooling water pipeline.
[0006] The first dosing assembly includes a pH sensor, a corrosion inhibitor dosing device, and a scale inhibitor dosing device. These three devices are arranged sequentially along the flow direction of the cooling water within the cooling water pipe. The detection end of the pH sensor is inserted into the cavity of the cooling water pipe, and the output end of the pH sensor is electrically connected to the central controller.
[0007] The second dosing assembly includes an ORP sensor and an oxidizing bactericide dosing device. The detection end of the ORP sensor is inserted into the cavity of the cooling water pipe and is located adjacent to the pH sensor. The output end of the ORP sensor is electrically connected to the central controller. The oxidizing bactericide dosing device is installed on the cooling water pipe.
[0008] In one possible implementation, a non-oxidizing bactericide dosing device is also included; the non-oxidizing bactericide dosing device is installed on the cooling water pipe and is arranged adjacent to the oxidizing bactericide dosing device.
[0009] In one possible implementation, the corrosion inhibitor dosing device, scale inhibitor dosing device, oxidizing bactericide dosing device, and non-oxidizing bactericide dosing device all include: a reagent tank, a stirrer, and a dosing pump; the stirrer is fixed on the top of the reagent tank, and the stirring part of the stirrer extends into the cavity of the reagent tank; the dosing pump is fixed on the top of the reagent tank, the inlet of the dosing pump is connected to the cavity of the reagent tank through a first infusion pipe, and the outlet of the dosing pump is connected to a cooling water pipe through a second infusion pipe.
[0010] In one possible implementation, the reagent tank is equipped with a liquid level measuring instrument.
[0011] In one possible implementation, a drain pipe is provided on the cooling water pipeline, with the inlet end of the drain pipe connected to the cooling water pipeline and the inlet end of the drain pipe located between the ORP sensor and the oxidizing bactericide dosing device, and the outlet end of the drain pipe is suitable for discharging the sewage in the cooling water pipeline to the wastewater recycling tank.
[0012] In one possible implementation, a third solenoid valve is installed on the drain pipe.
[0013] In one possible implementation, a flow meter is installed on the sewage pipe; the third solenoid valve and the flow meter are arranged in sequence along the direction of sewage flow in the sewage pipe, and the detection end of the flow meter is inserted into the cavity of the sewage pipe.
[0014] In one possible implementation, a water quality sensor is also included; the water quality sensor is installed on the cooling water pipe and the detection end of the water quality sensor extends into the cavity of the cooling water pipe, and the output end of the water quality sensor is electrically connected to the central controller.
[0015] In one possible implementation, a pressure damper is also included; the pressure damper is connected to the cooling water pipe.
[0016] Beneficial effects of this application
[0017] By installing pH and ORP sensors, the water quality of the cooling water in the cooling water pipes can be monitored in real time. Based on the detected water quality data, staff can accurately calculate the required dosage and type of chemicals, avoiding waste or shortage of chemicals and reducing operating costs. The pH and ORP sensors transmit the detection results to the central controller, which opens or closes the corresponding dosing device based on the detection data, thereby controlling the dosage of chemicals added to the cooling water pipes and reducing unnecessary consumption caused by excessive chemical input, thus lowering operating costs.
[0018] This application, by setting up a first dosing component and a second dosing component, allows for the dispensing of different chemicals compared to the traditional selection of a single chemical. This enables a more comprehensive and effective response to the complex and variable microbial communities in cooling water, improving the sterilization and descaling effects and ensuring that the cooling water maintains good quality at all times. Furthermore, the first and second dosing components work in concert with the central controller, enabling timely dosing operations based on water quality changes. This improves the efficiency and timeliness of dosing, automates the dosing of cooling water pipelines, reduces reliance on manual operation, and lowers the intensity of manual labor.
[0019] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description
[0020] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.
[0021] Figure 1 This application shows a schematic diagram of the main structure of the central air conditioning cooling water pipeline chemical dosing device;
[0022] Figure 2 Showing the front view of the dosing device;
[0023] Figure 3 A partially enlarged view shows the connection between the dosing device and the cooling water pipeline;
[0024] Figure 4 This diagram illustrates the connections between the central controller and the various components. Detailed Implementation
[0025] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.
[0026] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0028] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.
[0029] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.
[0030] This application proposes a chemical dosing device for central air conditioning cooling water pipelines, such as... Figures 1 to 4 As shown, the system includes: a cooling water pipe, a first dosing assembly, a second dosing assembly, and a central controller 400. The inlet of the cooling water pipe is connected to the outlet of the central air conditioning system to extract cooling water from it. The outlet of the cooling water pipe is connected to the inlet of the central air conditioning system to return the cooling water to the system. A first solenoid valve 111 is installed at the inlet of the cooling water pipe, and a second solenoid valve 121 is installed at the outlet. Both the first and second dosing assemblies are mounted on the cooling water pipe. The central controller 400 is electrically connected to both the first and second dosing assemblies and is used to control the dosing operations performed by the first and second dosing assemblies on the cooling water pipe. The first dosing assembly includes: a pH sensor 210 and a corrosion inhibitor dispenser. The first dosing assembly includes: a pH sensor 210 and a scale inhibitor dosing device 230; a pH sensor 210, a corrosion inhibitor dosing device 220, and a scale inhibitor dosing device 230 are arranged sequentially along the flow direction of the cooling water in the cooling water pipe. The detection end of the pH sensor 210 is inserted into the cavity of the cooling water pipe, and the output end of the pH sensor 210 is electrically connected to the central controller 400. The corrosion inhibitor dosing device 220 and the scale inhibitor dosing device 230 are arranged adjacent to each other. The second dosing assembly includes: an ORP sensor 310 and an oxidizing bactericide dosing device 320; the detection end of the ORP sensor 310 is inserted into the cavity of the cooling water pipe and is arranged adjacent to the pH sensor 210. The output end of the ORP sensor 310 is electrically connected to the central controller 400. The oxidizing bactericide dosing device 320 is installed on the cooling water pipe.
[0031] It should be noted here that the cooling water pipe serves as the circulation channel for the central air conditioning cooling water, carrying away the heat generated by the central air conditioning system to ensure normal heat dissipation and maintain its stable operation. The first solenoid valve 111 is installed at the inlet end of the cooling water pipe, and the second solenoid valve 121 is installed at the outlet end. The first and second solenoid valves work together to control the opening and closing of the cooling water pipe. The corrosion inhibitor dosing device 220 contains an existing organophosphorus corrosion inhibitor, suitable for adding corrosion inhibitors to the cooling water pipe. The corrosion inhibitor is used to adjust the pH value of the cooling water, reducing the risk of corrosion due to changes in acidity or alkalinity, and ensuring that the pH value of the cooling water is controlled within a first preset threshold. The scale inhibitor dosing device 2... The device 30 contains a polycarboxylate scale inhibitor, a material found in existing technologies. This scale inhibitor is suitable for adding to cooling water pipes to prevent impurities in the cooling water from forming scale and causing blockages. A pH sensor 210, with its detection end inserted into the cooling water pipe cavity, can monitor the acidity or alkalinity of the cooling water in real time. The pH sensor 210 transmits the detected pH value data to the central controller 400. Based on the pH changes, the central controller 400 controls the dosing operations of the corrosion inhibitor dosing device 220 and the scale inhibitor dosing device 230. The corrosion inhibitor dosing device 220 and the scale inhibitor dosing device 230 precisely add corrosion inhibitor as needed, avoiding the possibility of excessive or insufficient dosage in traditional manual dosing methods and reducing waste.
[0032] Specifically, when cooling water circulates in the cooling water pipe, pH sensor 210 detects the pH value of the cooling water in the pipe and uploads the detection data to central controller 400. Central controller 400 controls the opening or closing of corrosion inhibitor dosing device 220 and scale inhibitor dosing device 230 based on a first preset threshold. When the pH value is greater than the first preset threshold, corrosion inhibitor dosing device 220 and scale inhibitor dosing device 230 are turned on to perform chemical dosing operation on the cooling water pipe. Conversely, when the pH value is less than the first preset threshold, corrosion inhibitor dosing device 220 and scale inhibitor dosing device 230 are turned off to stop chemical dosing operation on the cooling water pipe.
[0033] The first preset threshold value is 8PH-9PH.
[0034] The oxidizing bactericide dosing device 320 contains a chlorine dioxide-based oxidizing bactericide from the prior art, suitable for adding oxidizing bactericides into cooling water pipes. The oxidizing bactericide can kill or inhibit the growth of microorganisms in cooling water, reduce the content of microorganisms in cooling water, ensure that the oxidation-reduction potential of cooling water is controlled within the second threshold, improve the heat transfer efficiency of cooling water, and reduce energy consumption and operating costs. The ORP sensor 310 is suitable for detecting the oxidation-reduction potential of cooling water (oxidation-reduction potential is an indicator that measures the relative content of oxidizing and reducing substances in water; if there are more reducing substances in cooling water, the possibility of microbial growth is greater). The ORP sensor 310 transmits the detected oxidation-reduction potential data to the central controller 400, and the central controller 400 controls the dosing operation of the oxidizing bactericide dosing device 320 based on the changes in oxidation-reduction potential data.
[0035] Specifically, when cooling water circulates in the cooling water pipe, the ORP sensor 310 detects the oxidation-reduction potential of the cooling water in the pipe and uploads the detection data to the central controller 400. The central controller 400 controls the opening or closing of the oxidizing bactericide dosing device 320 based on a second preset threshold. When the oxidation-reduction potential value is greater than the second preset threshold, the oxidizing bactericide dosing device 320 is turned on to perform dosing operation on the cooling water pipe. Conversely, when the oxidation-reduction potential value is less than the second preset threshold, the oxidizing bactericide dosing device 320 is turned off to stop dosing operation on the cooling water pipe.
[0036] The second preset threshold value ranges from 400mV to 450mV, and preferably, the second preset threshold value is 420mV.
[0037] By installing pH sensors 210 and ORP sensors 310, the water quality of the cooling water in the cooling water pipes is monitored in real time. Based on the detected water quality data, operators can accurately calculate the required dosage and type of chemicals, avoiding waste or shortages and reducing operating costs. The pH and ORP sensors transmit the detection results to the central controller 400, which opens or closes the corresponding dosing device based on the data, thereby controlling the dosage of chemicals added to the cooling water pipes and reducing unnecessary consumption caused by excessive chemical addition. This application reduces operating costs. By setting up a first dosing component and a second dosing component, compared to the traditional selection of a single agent, different agents can be added to the first and second dosing components. This allows for a more comprehensive and effective response to the complex and variable microbial communities in the cooling water, improving the sterilization and descaling effects and ensuring that the cooling water always maintains good water quality. At the same time, the first and second dosing components and the central controller 400 work together to realize timely dosing operations based on changes in water quality, improving the efficiency and timeliness of dosing, automating the dosing of cooling water pipelines, reducing reliance on manual operation, and lowering the intensity of manual labor.
[0038] Furthermore, the central controller 400 adopts an industrial computer with the existing model number nFioc-2400.
[0039] In one possible implementation, the PH sensor 210 is configured to use a GP-250A sensor, which is a known technology; and the ORP sensor 310 is configured to use a GO-100 sensor, which is a known technology.
[0040] In one possible implementation, a non-oxidizing bactericide dosing device 410 is also included; the non-oxidizing bactericide dosing device 410 is disposed on the cooling water pipe and is disposed adjacent to the oxidizing bactericide dosing device 320.
[0041] It should be noted that the non-oxidizing bactericide dosing device 410 contains isothiazolinone non-oxidizing bactericides from the prior art, suitable for adding non-oxidizing bactericides into cooling water pipes. These non-oxidizing bactericides are effective in preventing microorganisms in cooling water from developing drug resistance, thus avoiding a decrease in the effectiveness of oxidizing bactericides due to increased microbial resistance. The central controller 400 controls the opening and closing of the non-oxidizing bactericide dosing device 410 at set intervals. Furthermore, the central controller 400 is equipped with a timer, the output of which is electrically connected to the input of the central controller 400. The central controller 400 controls the opening and closing of the non-oxidizing bactericide dosing device 410 based on the time interval set by the timer. Specifically, after completing the current non-oxidizing bactericide dosing operation on the cooling water pipes, a timer is started. After the timer reaches a preset duration, the next non-oxidizing bactericide dosing operation is performed. The time interval set by the timer can be configured according to the dosing requirements, and the range of the time interval is 1W-4W, preferably 2W.
[0042] Furthermore, the cooling water pipeline includes a first pipeline 110, a second pipeline 120, and a third pipeline 130, which are connected in one continuous manner. A first solenoid valve 111 is located at the inlet end of the first pipeline 110. A pH sensor 210 and an ORP sensor 310 are arranged adjacent to each other on the first pipeline 110, and the detection ends of the pH sensor 210 and the ORP sensor 310 are both inserted into the interior of the first pipeline 110. A second solenoid valve 121 is located at the outlet end of the third pipeline 130. A corrosion inhibitor dosing device 220, a scale inhibitor dosing device 230, an oxidizing bactericide dosing device 320, and a non-oxidizing bactericide dosing device 410 are all arranged adjacent to each other on the second pipeline 120.
[0043] In one possible implementation, the corrosion inhibitor dosing device 220, scale inhibitor dosing device 230, oxidizing bactericide dosing device 320, and non-oxidizing bactericide dosing device 410 all include: a reagent tank 510, a stirrer 520, and a dosing pump 530; the stirrer 520 is fixed to the top of the reagent tank 510, and the stirring part 521 of the stirrer 520 extends into the cavity of the reagent tank 510; the dosing pump 530 is fixedly installed on the top of the reagent tank 510; the inlet of the dosing pump 530 is connected to the cavity of the reagent tank 510 through a first infusion pipe 531; and the outlet of the dosing pump 530 is connected to a cooling water pipe through a second infusion pipe 532.
[0044] It should be noted that the reagent tank 510 is suitable for storing the corresponding reagents, preventing external impurities from entering the reagents. The stirring part 521 of the stirrer 520 extends into the cavity of the reagent tank 510, and the stirring makes the reagents in the reagent tank 510 more uniform, preventing the reagents from settling or separating. The dosing pump 530 is installed on the top of the reagent tank 510 through the fixing bracket 550, and the dosing pump 530 is electrically connected to the central controller 400. The dosing pump 530 is used to draw and deliver reagents according to the instructions of the central controller 400. The corresponding agents are delivered into the cooling water pipes. The third pipe 130 is provided with an installation part 131, which matches the second infusion pipe 532. The outlet end of the second infusion pipe 532 is connected to the third pipe 130 through the installation part 131. It should be noted that the agent tanks 510 of the corrosion inhibitor dosing device 220, scale inhibitor dosing device 230, oxidizing bactericide dosing device 320, and non-oxidizing bactericide dosing device 410 can be integrally molded or set separately. This application does not limit this.
[0045] Furthermore, such as Figure 2 , Figure 3 As shown, the drug outlet end of the second infusion tube 532 is provided with a connecting part 5321. The inner side wall of the connecting part 5321 is provided with an internal thread. Correspondingly, the mounting part 131 is provided with an external thread that matches the connecting part 5321. The second infusion tube 532 is threadedly connected to the mounting part 131 through the connecting part 5321.
[0046] Furthermore, there are two or more mounting sections 131, and the two or more mounting sections 131 are arranged adjacent to each other.
[0047] Furthermore, a bottom valve 533 is provided at one end of the first infusion tube 531 located inside the medicine tank 510, and the bottom valve 533 is located at the bottom of the medicine tank 510.
[0048] Furthermore, the stirring section 521 consists of stirring blades.
[0049] In one possible implementation, the feed pump 530 is a peristaltic pump as in the prior art.
[0050] In one possible implementation, a liquid level measuring instrument 540 is installed inside the reagent tank 510, and the detection end of the liquid level measuring instrument 540 extends into the bottom of the reagent tank 510; the liquid level measuring instrument 540 can accurately measure the liquid level height of the reagent in the reagent tank 510, so that the operator can know the remaining amount of reagent in real time and avoid the situation where the reagent runs out and the dosing pump 530 may run dry.
[0051] Preferably, the liquid level measuring instrument 540 adopts the LJT-200 submersible liquid level gauge, which is a type of liquid level gauge in the prior art.
[0052] In one possible implementation, a drain pipe 600 is provided on the cooling water pipeline. The inlet end of the drain pipe 600 is connected to the cooling water pipeline, and the inlet end of the drain pipe 600 is located between the ORP sensor 310 and the oxidizing bactericide dosing device 320. The outlet end of the drain pipe 600 is suitable for discharging sewage in the cold water pipeline to the wastewater recycling tank.
[0053] It should be noted that the inlet end of the sewage pipe 600 is connected to the second pipe 120 through the first T-shaped pipe 610. The sewage pipe 600 is used to discharge sewage in the cooling water pipe to the wastewater recycling tank. Timely discharge of sewage can prevent sewage from accumulating in the cooling water pipe. At the same time, the sewage is centrally recycled and treated, which meets environmental protection requirements and reduces pollution to the environment.
[0054] Furthermore, a third solenoid valve 620 is provided on the drain pipe 600, which is suitable for controlling the discharge of sewage in the cooling water pipe. The third solenoid valve 620 is electrically connected to the central controller 400, and the central controller 400 can control the opening or closing of the third solenoid valve 620.
[0055] In one possible implementation, a water quality sensor 420 is also included. The water quality sensor 420 is mounted on the cooling water pipe, with its detection end extending into the cavity of the cooling water pipe. The output end of the water quality sensor 420 is electrically connected to the central controller 400. It should be noted that the water quality sensor 420 is mounted on the first pipe 110 and is positioned adjacent to the ORP sensor 310. The water quality sensor 420 is suitable for detecting the conductivity of the cooling water and transmits the detected conductivity data to the central controller 400.
[0056] Furthermore, the central controller 400 can control the opening or closing of the third solenoid valve 620 based on the conductivity data transmitted by the water quality sensor 420. Specifically, when cooling water circulates in the cooling water pipe, the water quality sensor 420 detects the conductivity of the cooling water in the pipe and uploads the detection data to the central controller 400. The central controller 400 controls the opening or closing of the third solenoid valve 620 based on a third preset threshold. When the detected conductivity is greater than the third preset threshold, the third solenoid valve 620 is opened to discharge the wastewater in the cooling water pipe. Conversely, when the conductivity is less than the third preset threshold, the third solenoid valve 620 is closed to stop the discharge of wastewater in the cooling water pipe.
[0057] The third preset value is: 1750μS / cm--1800μS / cm.
[0058] Preferably, the water quality sensor 420 adopts the GC-28 conductivity sensor, which is a technology already in use.
[0059] In one possible implementation, a flow meter 630 is installed on the drain pipe 600; the third solenoid valve 620 and the flow meter 630 are arranged sequentially along the sewage flow direction within the drain pipe 600, with the detection end of the flow meter 630 extending into the cavity of the drain pipe 600. It should be noted that the flow meter 630 is located at the outlet end of the drain pipe 600. The flow meter 630 is used to measure the flow rate of sewage discharged from the drain pipe 600. The output end of the flow meter 630 is electrically connected to the central controller 400, allowing the measured sewage discharge volume to be uploaded to the central controller 400. Based on the sewage discharge volume data, operators can calculate the amount of cooling water needed to replenish the cooling water pipes and perform water replenishment operations, thereby ensuring that the cooling water is always maintained at a suitable level and flow rate, guaranteeing the stable operation of the central air conditioning system. Preferably, the flow meter 630 is a DJLD-DN25 electromagnetic flow meter, a model already available in the technology.
[0060] In one possible implementation, a pressure damper 710 is also included; the pressure damper 710 is connected to the cooling water pipe. It should be noted that the pressure damper 710 is installed at the connection between the second pipe 120 and the third pipe 130 via a second T-tube 720. The outlet end of the second pipe 120 and the inlet end of the third pipe 130 are respectively connected to the first pipe 110 and the second pipe 120 of the second T-tube 720. The pressure damper 710 is connected to the third pipe 130 of the second T-tube 720. When the diameter of the second infusion pipe 532 is smaller than the diameter of the cold water pipe, the dosing pump 530 will generate impact pressure when injecting chemicals into the cooling water pipe, causing unstable pressure within the cooling water pipe. By installing the pressure damper, the pressure damper can absorb the impact pressure generated by the dosing pump during chemical injection, ensuring that the pressure within the cooling water pipe remains stable.
[0061] Preferably, the pressure damper 710 adopts a UPVC air chamber type pulse (or pulsating) buffer volume damper, which is a type of existing technology.
[0062] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A chemical dosing device for central air conditioning cooling water pipelines, characterized in that, include: Cooling water pipeline, first dosing assembly, second dosing assembly, central controller; The inlet end of the cooling water pipe is adapted to be connected to the outlet end of the central air conditioner to extract cooling water from the central air conditioner. The outlet end of the cooling water pipe is connected to the inlet end of the central air conditioner to return the cooling water to the central air conditioner. The inlet end of the cooling water pipe is equipped with a first solenoid valve, and the outlet end of the cooling water pipe is equipped with a second solenoid valve. The first dosing assembly and the second dosing assembly are both installed on the cooling water pipeline. The central controller is electrically connected to the first dosing assembly and the second dosing assembly respectively, and is suitable for controlling the first dosing assembly and the second dosing assembly to perform dosing operations on the cooling water pipeline. The first dosing assembly includes a pH sensor, a corrosion inhibitor dosing device, and a scale inhibitor dosing device. The pH sensor, the corrosion inhibitor dosing device, and the scale inhibitor dosing device are arranged sequentially along the flow direction of the cooling water in the cooling water pipe. The detection end of the pH sensor is inserted into the cavity of the cooling water pipe, and the output end of the pH sensor is electrically connected to the central controller. The second dosing assembly includes an ORP sensor and an oxidizing bactericide dosing device; the detection end of the ORP sensor is inserted into the cavity of the cooling water pipe and is arranged adjacent to the pH sensor; the output end of the ORP sensor is electrically connected to the central controller; and the oxidizing bactericide dosing device is arranged on the cooling water pipe.
2. The central air conditioning cooling water pipeline chemical dosing device according to claim 1, characterized in that, It also includes non-oxidizing bactericide dosing devices; The non-oxidizing bactericide dosing device is installed on the cooling water pipe and is located adjacent to the oxidizing bactericide dosing device.
3. The central air conditioning cooling water pipeline chemical dosing device according to claim 2, characterized in that, The corrosion inhibitor dosing device, the scale inhibitor dosing device, the oxidizing bactericide dosing device, and the non-oxidizing bactericide dosing device all include: a reagent tank, a stirrer, and a dosing pump; The stirrer is fixed to the top of the medicine tank, and the stirring part of the stirrer extends into the cavity of the medicine tank. The dosing pump is fixedly installed on the top of the medicine tank. The inlet of the dosing pump is connected to the cavity of the medicine tank through a first infusion pipe, and the outlet of the dosing pump is connected to the cooling water pipe through a second infusion pipe.
4. The central air conditioning cooling water pipeline chemical dosing device according to claim 3, characterized in that, The medicine tank is equipped with a liquid level measuring instrument.
5. The central air conditioning cooling water pipeline chemical dosing device according to claim 1, characterized in that, The cooling water pipeline is equipped with a drain pipe. The inlet end of the sewage pipe is connected to the cooling water pipe, and the inlet end of the sewage pipe is located between the ORP sensor and the oxidizing bactericide dosing device. The outlet end of the sewage pipe is suitable for discharging the sewage in the cooling water pipe to the wastewater recycling tank.
6. The central air conditioning cooling water pipeline chemical dosing device according to claim 5, characterized in that, The sewage pipe is equipped with a third solenoid valve.
7. The central air conditioning cooling water pipeline chemical dosing device according to claim 6, characterized in that, The sewage pipe is equipped with a flow meter; The third solenoid valve and the flow meter are arranged sequentially along the direction of sewage flow in the sewage pipe, and the detection end of the flow meter is inserted into the cavity of the sewage pipe.
8. The central air conditioning cooling water pipeline chemical dosing device according to claim 5, characterized in that, It also includes water quality sensors; The water quality sensor is installed on the cooling water pipe and the detection end of the water quality sensor is inserted into the cavity of the cooling water pipe. The output end of the water quality sensor is electrically connected to the central controller.
9. The central air conditioning cooling water pipeline chemical dosing device according to claim 1, characterized in that, It also includes pressure dampers; The pressure damper is connected to the cooling water pipe.