Residual chlorine meter flushing device and seawater desalination equipment
The residual chlorine table is flushed by alternately connecting the switching valve to industrial water, which solves the problem of inaccurate measurement caused by seawater pollution, ensures the cleaning and measurement accuracy of the residual chlorine table, and prevents corrosion and leakage of seawater desalination equipment.
Patent Information
- Application Number
- CN202422087665.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-27
AI Technical Summary
In seawater desalination equipment, seawater pollution causes inaccurate measurement data of residual chlorine meter, which increases maintenance difficulty and workload.
The industrial water and seawater alternately connect to the residual chlorine table by switching valves to flush the residual chlorine table and keep the measurement electrode clean.
Improve the accuracy of residual chlorine meter measurement data, ensure the normal operation of seawater desalination equipment and prevent corrosion and leakage.
Smart Images
Figure CN223043202U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of seawater desalination, and particularly to a residual chlorine meter flushing device and a seawater desalination equipment. Background Art
[0002] During the long-term seawater desalination process of seawater desalination equipment, seawater will contaminate the measuring electrode of the residual chlorine meter and the electrode water intake tank in the seawater desalination equipment, resulting in inaccurate or large deviation of the data measured by the residual chlorine meter. Therefore, the residual chlorine meter needs to be cleaned in time. Summary of the Utility Model
[0003] The purpose of the present disclosure is to provide a residual chlorine meter flushing device and a seawater desalination equipment, which can flush the residual chlorine meter with industrial water to improve the accuracy of the data measured by the residual chlorine meter.
[0004] To achieve the above purpose, in a first aspect, the present disclosure provides a residual chlorine meter flushing device, including: a switching valve, the water outlet of the switching valve is used to connect with the residual chlorine meter, the first water inlet of the switching valve is used to access the seawater source, and the second water inlet of the switching valve is used to access the industrial water source;
[0005] The switching valve is used to conduct the first water inlet and close the second water inlet to detect the index of the seawater residual chlorine, or close the first water inlet and conduct the second water inlet to flush the residual chlorine meter.
[0006] Optionally, it further includes a time control module, and the time control module is communicatively connected with the switching valve;
[0007] The time control module is used to periodically send a first instruction to the switching valve to make the switching valve close the first water inlet and conduct the second water inlet.
[0008] Optionally, it further includes a start-stop control module, and the start-stop control module is communicatively connected with the time control module and the switching valve respectively;
[0009] The start-stop control module is used to start the time management module in the automatic mode so that the time control module periodically sends the first instruction to the switching valve;
[0010] The start-stop control module is used to send a second instruction to the switching valve in the manual mode to make the switching valve close the first water inlet and conduct the second water inlet.
[0011] Optionally, the water outlet of the switching valve is connected to the electrode water intake tank of the residual chlorine meter.
[0012] Optionally, the time control module includes a proportional integral derivative controller.
[0013] Optionally, the switching valve includes a first solenoid valve and a second solenoid valve, and the first solenoid valve and the second solenoid valve are connected in parallel;
[0014] The water outlet of the first solenoid valve and the water outlet of the second solenoid valve are both used to connect to the residual chlorine meter. The water inlet of the first solenoid valve is used to access the seawater source, and the water inlet of the second solenoid valve is used to access the industrial water source.
[0015] Optionally, the first solenoid valve includes a two-way two-position solenoid valve.
[0016] Optionally, the second solenoid valve is the same as the first solenoid valve.
[0017] Optionally, the switching valve includes a two-way three-position solenoid valve or a three-way three-position solenoid valve.
[0018] In a second aspect, the present disclosure provides a seawater desalination device, including the residual chlorine meter flushing device described in the first aspect.
[0019] Through the above technical solutions, the residual chlorine meter flushing device includes a switching valve. The water outlet of the switching valve is used to connect to the residual chlorine meter. The first water inlet of the switching valve is used to access the seawater source, and the second water inlet of the switching valve is used to access the industrial water source. The switching valve is used to conduct the first water inlet and close the second water inlet to detect the seawater residual chlorine index, or close the first water inlet and conduct the second water inlet to flush the residual chlorine meter. Flushing the residual chlorine meter with the industrial water source improves the accuracy of the data measured by the residual chlorine meter.
[0020] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:
[0022] Figure 1 is a block diagram of a residual chlorine meter flushing device shown according to an exemplary embodiment of the present disclosure.
[0023] Figure 2 is another block diagram of a residual chlorine meter flushing device shown according to an exemplary embodiment of the present disclosure.
[0024] Figure 3 is a schematic diagram of a residual chlorine meter flushing device in a flushing state shown according to an exemplary embodiment of the present disclosure.
[0025] Figure 4It is a schematic diagram of a residual chlorine meter flushing device not in the flushing state shown according to an exemplary embodiment of the present disclosure. Detailed implementation manners
[0026] The following will describe in detail the specific implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for the purpose of illustrating and explaining the present disclosure, and are not used to limit the present disclosure.
[0027] It should be understood that the low-temperature multi-effect distillation seawater desalination technology is a technology that uses an air extraction system to reduce the internal pressure of the device, so that the boiling point of water drops below 70 °C for evaporation. The seawater is sprayed and film-formed on a series of horizontal tube evaporators in series, and a certain amount of steam is input and evaporated and condensed multiple times, and the temperature of the evaporator in the latter stage is always lower than that in the previous stage, so as to obtain a desalination process of distilled water that is multiple times the amount of steam. Multi-effect evaporation is to evaporate the heated seawater in multiple series-connected evaporators. The secondary steam generated by the evaporation of the previous-stage evaporator is used as the heat source for the next evaporator and condensed into fresh water.
[0028] It is worth noting that a residual chlorine meter is installed at the seawater inlet of the seawater desalination equipment. The residual chlorine meter can detect the residual chlorine index of the seawater source in real time to guide the operators to more accurately adjust the dosing amounts of the oxidation bactericide and reducing agent on the seawater intake side of the seawater desalination, and strictly control the quality of the seawater imported into the seawater desalination to be less than 0.1 mg / l, so as to prevent situations such as accelerated corrosion of the seawater desalination equipment and even leakage of the heat exchanger caused by excessive seawater residual chlorine.
[0029] The inventor found that because there are many impurities in the seawater, during the long-term operation of the seawater desalination equipment, the seawater will pollute the measuring electrode of the residual chlorine meter and the electrode water intake tank, resulting in inaccurate or large deviation of the measurement data of the residual chlorine meter, and at the same time increasing the difficulty and workload of the daily maintenance of the residual chlorine meter.
[0030] In view of this, the present disclosure provides a residual chlorine meter flushing device and a seawater desalination equipment, which can flush the residual chlorine meter with industrial water to improve the accuracy of the measurement data of the residual chlorine meter.
[0031] Figure 1 It is a block diagram of a residual chlorine meter flushing device shown according to an exemplary embodiment of the present disclosure. As Figure 1 shown, the residual chlorine meter flushing device includes: a switching valve, the water outlet of the switching valve is used to connect with the residual chlorine meter, the first water inlet of the switching valve is used to access the seawater source, and the second water inlet of the switching valve is used to access the industrial water source;
[0032] The switching valve is used to conduct the first water inlet and close the second water inlet for detecting the seawater residual chlorine index, or close the first water inlet and conduct the second water inlet to flush the residual chlorine meter.
[0033] Among them, the industrial water sources include but are not limited to surface water sources, groundwater sources, tap water sources, purified water sources, etc.
[0034] It should be noted that the switching valve includes two water inlets and one water outlet. The two water inlets are respectively connected to the seawater source and the industrial water source, and the water outlet is connected to the residual chlorine meter. The switching valve closes the water inlet connected to the seawater source and conducts the water inlet connected to the industrial water source. At this time, the industrial water flows into the residual chlorine meter through the switching valve to flush the residual chlorine meter; the switching valve conducts the water inlet connected to the seawater source and closes the water inlet connected to the industrial water source. At this time, the seawater flows into the residual chlorine meter through the switching valve, and the residual chlorine meter detects the seawater residual chlorine index.
[0035] In the embodiment of the present disclosure, by controlling the closing or conduction of the two water inlets of the switching valve, the switching valve can, on the basis of retaining the function of detecting seawater residual chlorine, flush the residual chlorine meter with industrial water, improve the accuracy of the data measured by the residual chlorine meter, so as to guide the operators to more accurately adjust the dosage of the oxidation bactericide and reducing agent on the seawater desalination water intake side, strictly control the seawater quality index at the seawater desalination inlet, and further prevent the occurrence of situations such as accelerated corrosion of seawater desalination equipment and even leakage of heat exchangers caused by excessive seawater residual chlorine.
[0036] To facilitate those skilled in the art to better understand the residual chlorine meter flushing device provided by the present disclosure, the residual chlorine meter flushing device will be described in detail below.
[0037] In a feasible embodiment, as Figure 2 shown, the residual chlorine meter flushing device further includes a time control module, and the time control module is communicatively connected to the switching valve;
[0038] The time control module is used to periodically send a first instruction to the switching valve to make the switching valve close the first water inlet and conduct the second water inlet.
[0039] It should be noted that the time control module can periodically send a first instruction to the switching valve according to the preset cleaning cycle of the user or according to the state of the seawater desalination equipment to control the closing of the first water inlet and the conduction of the second water inlet of the switching valve.
[0040] For example, when the preset cleaning period is once every seven days, the time control module sends a first instruction to the switching valve every seven days, controlling the switching valve to close the first water inlet and conduct the second water inlet every seven days. Industrial water flows into the residual chlorine meter through the switching valve and flushes the residual chlorine meter. Alternatively, when the seawater desalination equipment is in a shutdown state, the time control module sends a first instruction to the switching valve, controlling the switching valve to close the first water inlet and conduct the second water inlet. Industrial water flows into the residual chlorine meter through the switching valve and flushes the residual chlorine meter.
[0041] In the embodiments of the present disclosure, the time control module sends a first instruction to the switching valve to control the switching valve to close the first water inlet and conduct the second water inlet, and flush the residual chlorine meter.
[0042] In a feasible embodiment, as Figure 2 shown, the residual chlorine meter flushing device further includes a start-stop control module, and the start-stop control module is communicatively connected to the time control module and the switching valve respectively;
[0043] The start-stop control module is configured to start the time management module in the automatic mode, so that the time control module regularly sends the first instruction to the switching valve;
[0044] The start-stop control module is configured to send a second instruction to the switching valve in the manual mode, so that the switching valve closes the first water inlet and conducts the second water inlet.
[0045] It should be noted that the start-stop control module includes an automatic mode and a manual mode. When the start-stop control module is in the automatic mode, it controls the time management module to start, so that the time management module sends a first instruction to the switching valve, so that the switching valve closes the first water inlet and conducts the second water inlet. Industrial water flows into the residual chlorine meter through the switching valve and flushes the residual chlorine meter; when the start-stop control module is in the manual mode, the user manually triggers the start-stop control module, and the start-stop control module sends a second instruction to the switching valve, so that the switching valve closes the first water inlet and conducts the second water inlet. Industrial water flows into the residual chlorine meter through the switching valve and flushes the residual chlorine meter.
[0046] In the embodiments of the present disclosure, the start-stop control module can be used to control the start of the time management module, and the time management module sends a first instruction to the switching valve to achieve automatic flushing of the residual chlorine meter. The start-stop control module can also send a second instruction to the switching valve to achieve manual flushing of the residual chlorine meter.
[0047] In a feasible embodiment, the water outlet of the switching valve is connected to the electrode water intake tank of the residual chlorine meter.
[0048] It should be understood that the water outlet of the switching valve is connected to the electrode water collection tank of the residual chlorine meter, so that when the first water inlet of the switching valve is closed and the second water inlet of the switching valve is opened, the electrode water collection tank of the residual chlorine meter can be flushed with industrial water. It is also possible to detect the residual chlorine in the seawater flowing into the electrode water collection tank of the switching valve when the second water inlet of the switching valve is opened and the second water inlet of the switching valve is closed.
[0049] In a feasible embodiment, the time control module includes a Proportion Integration Differentiation (PID) controller.
[0050] It should be noted that the time control module of the present disclosure may also include other controllers, which are not limited in the present disclosure. The PID controller combines three control actions: proportional, integral, and derivative. By adjusting appropriate parameters (proportionality, integral time TI, and derivative time TD), high-quality control without residual error, timely and stable control can be achieved. This regulator can not only adjust quickly but also eliminate residual error, and has good adjustment performance.
[0051] As Figure 2 shown, in the residual chlorine meter flushing device, a stable pure water source is connected to the second water inlet (i.e., the industrial water side) of the switching valve, and another seawater source is connected to the first water inlet (i.e., the seawater side) of the switching valve. The water outlet of the switching valve is connected to the residual chlorine meter. When the start-stop control module is in the automatic mode, the PID controller periodically sends a first instruction to the switching valve, so that the first water inlet of the switching valve is closed and the second water inlet is opened, and the pure water flushes the residual chlorine meter through the switching valve, realizing automatic flushing of the residual chlorine meter, thereby ensuring that the electrodes and related components of the residual chlorine meter are always kept clean. When the seawater desalination equipment is in operation, the PID controller sends a detection instruction to the switching valve, so that the first water inlet of the switching valve is opened and the second water inlet is closed, and the seawater flows into the residual chlorine meter through the switching valve, and the residual chlorine meter detects the index of seawater residual chlorine in real time, thereby ensuring the accuracy of the measurement result of the residual chlorine meter.
[0052] It should be noted that the switching valve in the present disclosure can be a valve with two water inlets and one water outlet composed of multiple solenoid valves, or a solenoid valve including two water inlets and one water outlet. The present disclosure does not limit this.
[0053] In a feasible embodiment, as Figure 3 or Figure 4 shown, the switching valve includes a first solenoid valve and a second solenoid valve, and the first solenoid valve is in parallel with the second solenoid valve;
[0054] The water outlet of the first solenoid valve and the water outlet of the second solenoid valve are both used to connect to the residual chlorine meter. The water inlet of the first solenoid valve is used to access the seawater source, and the water inlet of the second solenoid valve is used to access the industrial water source.
[0055] In a feasible embodiment, as Figure 3 or Figure 4 shown, the first solenoid valve includes a two-way two-port solenoid valve.
[0056] In a feasible embodiment, as Figure 3 or Figure 4 shown, the second solenoid valve is the same as the first solenoid valve.
[0057] It is worth noting that two identical solenoid valves, both including a water inlet and a water outlet, are connected in parallel to form a switching valve with two water inlets and one water outlet. When the switching valve conducts the first water inlet and closes the second water inlet, the seawater residual chlorine is detected for its indicators. When the switching valve closes the first water inlet and conducts the second water inlet, the residual chlorine meter is flushed.
[0058] Exemplarily, in the residual chlorine meter flushing device, a stable pure water source is connected to the second water inlet (i.e., the industrial water side) of the switching valve, and another seawater source is connected to the first water inlet (i.e., the seawater side) of the switching valve. The water outlet of the switching valve is connected to the residual chlorine meter. As Figure 3 shown, when the start-stop control module is in the automatic mode, the PID controller periodically sends a first instruction to the switching valve to make the first water inlet of the switching valve closed and the second water inlet conducted, and the pure water flushes the residual chlorine meter through the switching valve, realizing the automatic flushing of the residual chlorine meter, thereby ensuring that the electrodes and related components of the residual chlorine meter are always kept clean. As Figure 4 shown, when the seawater desalination equipment is in the operating state, the PID controller sends a detection instruction to the switching valve to make the first water inlet of the switching valve conducted and the second water inlet closed, and the seawater flows into the residual chlorine meter through the switching valve, and the residual chlorine meter detects the seawater residual chlorine indicators in real time, thereby ensuring the accuracy of the measurement results of the residual chlorine meter.
[0059] In a feasible embodiment, the switching valve can also be a two-way three-port solenoid valve or a three-way three-port solenoid valve.
[0060] Based on the same inventive concept, the present disclosure also provides a seawater desalination equipment, including the above-mentioned residual chlorine meter flushing device.
[0061] In the embodiments of the present disclosure, by controlling the closing or conduction of the two water inlets of the switching valve, the switching valve can, on the basis of retaining the function of detecting seawater residual chlorine, flush the residual chlorine meter with industrial water, improve the accuracy of the data measured by the residual chlorine meter, thereby guiding the operators to more precisely adjust the dosage of the oxidation biocide and reducing agent on the seawater intake side of the seawater desalination, strictly control the water quality index of the inlet seawater for seawater desalination, and further prevent the occurrence of situations such as the accelerated corrosion of the seawater desalination equipment and even the leakage of the heat exchanger caused by the excessive seawater residual chlorine.
[0062] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0063] In addition, it should be noted that, in the case of no contradiction, the various specific technical features described in the above specific embodiments can be combined in any suitable manner. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.
[0064] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, it should also be regarded as the content disclosed by the present disclosure.
Claims
1. A residual chlorine meter flushing device, characterized in that: include: A switching valve, wherein the water outlet of the switching valve is used to be connected to a residual chlorine meter, the first water inlet of the switching valve is used to be connected to a seawater source, and the second water inlet of the switching valve is used to be connected to an industrial water source; The switching valve is used to open the first water inlet and close the second water inlet to detect the index of residual chlorine in seawater, or to close the first water inlet and open the second water inlet to flush the residual chlorine meter.
2. The residual chlorine meter flushing device according to claim 1, characterized in that: It also includes a time control module, which is in communication with the switching valve; The time control module is used to send a first instruction to the switching valve at a fixed time, so that the switching valve closes the first water inlet and opens the second water inlet.
3. The residual chlorine meter flushing device according to claim 2, characterized in that: It also includes a start-stop control module, which is communicatively connected with the time control module and the switching valve respectively; The start-stop control module is used to start the time management module in the automatic mode, so that the time control module sends the first instruction to the switching valve at a fixed time; The start-stop control module is used to send a second instruction to the switching valve in manual mode, so that the switching valve closes the first water inlet and opens the second water inlet.
4. The residual chlorine meter flushing device according to claim 1, characterized in that: The water outlet of the switching valve is connected to the electrode water intake tank of the residual chlorine meter.
5. The residual chlorine meter flushing device according to claim 2, characterized in that: The time control module includes a proportional-integral-derivative controller.
6. The residual chlorine meter flushing device according to any one of claims 1 to 5, characterized in that: The switching valve comprises a first solenoid valve and a second solenoid valve, wherein the first solenoid valve and the second solenoid valve are connected in parallel; The water outlet of the first solenoid valve and the water outlet of the second solenoid valve are both used to connect to the residual chlorine meter, the water inlet of the first solenoid valve is used to access a seawater source, and the water inlet of the second solenoid valve is used to access an industrial water source.
7. The residual chlorine meter flushing device according to claim 6, characterized in that: The first solenoid valve comprises a two-position two-way solenoid valve.
8. The residual chlorine meter flushing device according to claim 7, characterized in that: The second solenoid valve is identical to the first solenoid valve.
9. The residual chlorine meter flushing device according to any one of claims 1 to 5, characterized in that: The switching valve comprises a two-position three-way solenoid valve or a three-position three-way solenoid valve.
10. A seawater desalination device, characterized in that: It comprises the residual chlorine meter flushing device as described in any one of claims 1-9.