CN114105267A - Central air conditioning cooling water drainage device - Google Patents
Central air conditioning cooling water drainage device Download PDFInfo
- Publication number
- CN114105267A CN114105267A CN202111351955.8A CN202111351955A CN114105267A CN 114105267 A CN114105267 A CN 114105267A CN 202111351955 A CN202111351955 A CN 202111351955A CN 114105267 A CN114105267 A CN 114105267A
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- Prior art keywords
- cooling water
- central air
- pump
- water
- control cabinet
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- 239000000498 cooling water Substances 0.000 title claims abstract description 28
- 238000004378 air conditioning Methods 0.000 title claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 238000004891 communication Methods 0.000 claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims abstract description 17
- 239000010865 sewage Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 37
- 239000003814 drug Substances 0.000 abstract description 7
- 239000013589 supplement Substances 0.000 abstract description 5
- 229940079593 drug Drugs 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 description 14
- 238000005260 corrosion Methods 0.000 description 14
- 239000003139 biocide Substances 0.000 description 13
- 230000003115 biocidal effect Effects 0.000 description 12
- 239000002455 scale inhibitor Substances 0.000 description 11
- 241000894006 Bacteria Species 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 241000195493 Cryptophyta Species 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002354 daily effect Effects 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012372 quality testing Methods 0.000 description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000295146 Gallionellaceae Species 0.000 description 1
- 241000589248 Legionella Species 0.000 description 1
- 208000007764 Legionnaires' Disease Diseases 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000003619 algicide Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to the technical field of pollution discharge devices, and discloses a central air-conditioning cooling water discharge device which comprises a PLC (programmable logic controller) control cabinet, an electric regulating valve, a pollution discharge regulating valve, a dosing pump, a cooling pump and an electric regulating valve; the PLC control cabinet is respectively in communication connection with the electric control valve, the pollution discharge control valve, the dosing pump, the cooling pump and the electric control valve. The invention can effectively monitor the water quality in the system, keep a proper amount of uniform drug concentration in the water system, save water, automatically maintain the water quality index of the system in a control range, reduce the labor capacity, realize scientific management and reduce the operation cost, and has less pollution discharge; the time for sewage discharge and the sewage discharge amount can be automatically judged along with the change of climate change, the change of water quality supplement, the operation time of the cooling tower and other factors, the dosing metering pump is automatically started as soon as the sewage discharge is finished, and enough space is reserved for a water supply treatment engineer to adjust the continuous operation time of the metering pump each time.
Description
Technical Field
The invention relates to the field of sewage discharge devices, in particular to a central air-conditioning cooling water sewage discharge device.
Background
In a central air-conditioning cooling circulating water system, because conditions such as temperature, nutrients and the like adapt to the growth and the propagation of bacteria and algae, a large amount of moss is often generated in a cooling tower to form biological slime; bacteria such as heterotrophic bacteria, iron bacteria, nitrifying bacteria, sulfate reducing bacteria and the like are generated in the pipeline to cause corrosion of the inner wall of the pipeline, so that pig rust is generated to fall off, and the heat exchange of the condenser is influenced; the circulating cooling water can also cause damage to human bodies due to pathogenic bacteria such as legionella and the like. The central air-conditioning cooling circulating water is added with a sterilization algicide regularly during running in summer to kill or inhibit the growth of bacteria and algae and ensure the normal running of equipment. The deposition of scale, sludge and algae which act as thermal resistance inevitably results in reduced heat transfer, increased compressor load, water and electricity waste, shortened equipment life, and even no guarantee of safe operation.
Some of the devices are used for processing the cooling circulating water system of the central air conditioner periodically, but the devices are labor-consuming and are not beneficial to controlling the processing time.
In order to solve the above problems, the present application provides a central air conditioning cooling water draining device.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems existing in the background technology, the invention provides a central air-conditioning cooling water sewage discharge device, which can effectively monitor the water quality in a system, keep a proper amount of uniform medicine concentration in the water system, save the water, automatically maintain the water quality index of the system in a control range, reduce the labor capacity, realize scientific management and reduce the operation cost; the time for sewage discharge and the sewage discharge amount can be automatically judged along with the change of climate change, the change of water quality supplement, the operation time of the cooling tower and other factors, the dosing metering pump is automatically started as soon as the sewage discharge is finished, and enough space is reserved for a water supply treatment engineer to adjust the continuous operation time of the metering pump each time.
(II) technical scheme
In order to solve the problems, the invention provides a central air-conditioning cooling water drainage device, which comprises a PLC control cabinet, an electric regulating valve, a pollution discharge regulating valve, a dosing pump, a cooling pump and an electric regulating valve;
the PLC control cabinet is respectively in communication connection with the electric control valve, the pollution discharge control valve, the dosing pump, the cooling pump and the electric control valve.
Preferably, the PLC control cabinet is in communication connection with a display screen, and the display screen is used for displaying state and data information.
Preferably, the PLC control cabinet is connected with a cloud server through a communication module.
Preferably, the PLC control cabinet is in communication connection with a conductivity detector, and the conductivity detector is used for detecting conductivity.
Preferably, the PLC control cabinet is in communication connection with an electromagnetic flowmeter.
Preferably, the PLC control cabinet is in communication connection with a computer.
Preferably, the cloud server is in communication connection with the mobile terminal.
Preferably, the mobile terminal is a mobile phone terminal.
The technical scheme of the invention has the following beneficial technical effects:
the automatic dosing system is a group of equipment matched with the water treatment of the medium and internal air conditioners and comprises an automatic dosing control box, an online measuring instrument, a dosing pump, a dosing barrel and the like. The system can effectively monitor the water quality in the system, keep a proper amount of uniform drug concentration in the water system, save water, automatically maintain the water quality index of the system in a control range, reduce the labor capacity, realize scientific management and reduce the operation cost, and has low pollution; the time for pollution discharge and the amount of discharged sewage can be automatically judged along with the change of climate change, the change of water quality supplement, the operation time of the cooling tower and other factors, the dosing metering pump is automatically started as soon as the pollution discharge is finished, and enough space is reserved for a water supply treatment engineer to adjust the continuous operation time of the metering pump each time;
the control of adding the chemicals into the chilled water is different from that of cooling water, and a manual control mode is adopted, wherein the corrosion and scale inhibitor is added once before the cooling is started, the proper adjustment and supplement are carried out during the operation according to the concentration of the chemicals in the water in a daily test report, and the biocide is added continuously after the cooling is started every day.
Drawings
Fig. 1 is a schematic structural view of a cooling water drainage device of a central air conditioner according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings 1 in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The invention provides a central air-conditioning cooling water drainage device, which comprises a PLC control cabinet, an electric regulating valve, a drainage regulating valve, a dosing pump, a cooling pump and an electric regulating valve, wherein the PLC control cabinet is connected with the electric regulating valve;
the PLC control cabinet is respectively in communication connection with the electric control valve, the pollution discharge control valve, the dosing pump, the cooling pump and the electric control valve.
The PLC switch board communication is connected with the display screen, and the display screen is used for showing state and data information.
The PLC control cabinet is connected with a cloud server through a communication module. The PLC control cabinet is in communication connection with a conductivity detector, and the conductivity detector is used for detecting conductivity. The PLC control cabinet is in communication connection with an electromagnetic flowmeter. The PLC control cabinet is in communication connection with a computer. The cloud server is in communication connection with a mobile terminal, and the mobile terminal is used for performing remote control and remotely watching data through the cloud server. The mobile terminal is a plurality of mobile terminals, so that a plurality of managers can observe the operation data of the whole device in real time through the mobile terminals.
It should be noted that:
1. the cooling water automatic pollution discharge control system sets parameters:
the control mode comprises concentration ratio control and conductivity ratio control;
the concentration ratio is set to be 3-4, namely when the concentration ratio reaches 4, the electric control valve is opened, the sewage discharge is started, and the electric control valve is closed when the concentration ratio is lower than 3.
2. The set range of the conductivity ratio is 3.5-4.5, wherein 4 is a set value of PID control, namely the conductivity ratio reaches 4, and the electric regulating valve regulates the opening according to the ratio; when the conductivity ratio reaches 4.5, the electric control valve is fully opened, the opening degree is reduced below 4, and when the conductivity ratio reaches 3.5, the electric control valve is fully closed.
The above two control modes are used for controlling automatic pollution discharge.
3. And (3) controlling the adding of the corrosion and scale inhibitor:
the adding amount of the corrosion and scale inhibitor is added according to the discharge capacity, and after the sewage discharge device is started, the start and stop of a feeding pump of the corrosion and scale inhibitor are controlled according to the discharge capacity.
4. According to the water quality requirement of cooling water, the concentration of a corrosion and scale inhibitor medicament is regulated to 75mg/L-150 mg/L; the flow of the next dosing pump at 40% opening is calculated to be 3.06kg/h through experiments on the dosing pump; the concentration of the corrosion and scale inhibitor is set to 85mg/L according to the experience requirement of a water treatment unit, which means that 85mg of the corrosion inhibitor must be added to 1L of water discharged, and the unit discharge capacity of 1.2m is set under the opening degree of 40 percent through calculation3(i.e. 1.2m per effluent discharge)3Then the dosing pump at 40% opening is automatically turned on for 1 minute).
5. Controlling the addition of the biocide:
the adding of the biocide is carried out according to the circulation volume, and the adding volume is adjusted by manually adjusting the opening according to the water quality testing index. The control mode is that when the cooling pump is started, the south-north biocide dosing pump is started, and the cooling pump stops dosing; the biocide is oxidizing biocide, the residual chlorine concentration is controlled to be 0.5mg/L according to the residual chlorine control index in the national standard of 0.1-1mg/L and the intermediate value during general addition, and the circulating quantity of cooling water in an energy center is 9600m3And h, the residual chlorine addition needs to be ensured to be 4.8kg/h, so that the opening degree is only required to be adjusted to be 60% (4.8kg/h), and the system can be started once the system is started.
Automatic medicine adding control mode for cooling water
The control mode comprises concentration ratio control and conductivity ratio control;
1. the concentration ratio is set to be 3-4, namely when the concentration ratio reaches 4, the electric control valve is opened, the sewage discharge is started, and the electric control valve is closed when the concentration ratio is lower than 3.
2. The set range of the conductivity ratio is 3.5-4.5, wherein 4 is a set value of PID control, namely the conductivity ratio reaches 4, and the electric regulating valve regulates the opening according to the ratio; when the conductivity ratio reaches 4.5, the electric control valve is fully opened, the opening degree is reduced below 4, and when the conductivity ratio reaches 3.5, the electric control valve is fully closed.
The adding amount of the corrosion and scale inhibitor is added according to the discharge capacity, and after the sewage discharge device is started, the start and stop of a feeding pump of the corrosion and scale inhibitor are controlled according to the discharge capacity.
According to the water quality requirement of cooling water, the concentration of a corrosion and scale inhibitor medicament is regulated to 75mg/L-150 mg/L; the flow of the next dosing pump at 40% opening is calculated to be 3.06kg/h through experiments on the dosing pump; the concentration of the corrosion and scale inhibitor is set to 85mg/L according to the experience requirement of a water treatment unit, which means that 85mg of the corrosion inhibitor must be added to 1L of water discharged, and the unit discharge capacity of 1.2m is set under the opening degree of 40 percent through calculation3(i.e. 1.2m per effluent discharge)3Then the dosing pump at 40% opening is automatically turned on for 1 minute).
The adding of the biocide is carried out according to the circulation volume, and the adding volume is adjusted by manually adjusting the opening according to the water quality testing index. The control mode is that when the cooling pump is started, the south-north biocide dosing pump is started, and the cooling pump stops dosing; the biocide is oxidizing biocide, the residual chlorine concentration is controlled to be 0.5mg/L according to the residual chlorine control index in the national standard of 0.1-1mg/L and the intermediate value during general addition, and the circulating quantity of cooling water in an energy center is 9600m3And h, the residual chlorine addition needs to be ensured to be 4.8kg/h, so that the opening degree is only required to be adjusted to be 60% (4.8kg/h), and the system can be started once the system is started.
Since the residual chlorine content in cooling water is now low and since biocides are oxidizing agents, there are volatile situations in open cooling water systems, water treatment units recommend that the biocide opening be adjusted to 70% and that the opening be adjusted according to the assay results.
Fifth, the control mode of adding medicine into the chilled water
The control of adding the chemicals into the chilled water is different from that of cooling water, and a manual control mode is adopted, wherein the corrosion and scale inhibitor is added once before the cooling is started, the proper adjustment and supplement are carried out during the operation according to the concentration of the chemicals in the water in a daily test report, and the biocide is added continuously after the cooling is started every day.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (8)
1. A central air conditioning cooling water sewage discharge device is characterized by comprising a PLC control cabinet, an electric regulating valve, a sewage discharge regulating valve, a dosing pump, a cooling pump and an electric regulating valve;
the PLC control cabinet is respectively in communication connection with the electric control valve, the pollution discharge control valve, the dosing pump, the cooling pump and the electric control valve.
2. The central air-conditioning cooling water drainage device of claim 1, wherein the PLC control cabinet is connected with a display screen in a communication way, and the display screen is used for displaying state and data information.
3. The central air-conditioning cooling water drainage device as claimed in claim 1, wherein the PLC control cabinet is connected with a cloud server through a communication module.
4. The central air-conditioning cooling water drainage device as claimed in claim 1, wherein the PLC control cabinet is in communication connection with a conductivity detector, and the conductivity detector is used for detecting conductivity.
5. The central air-conditioning cooling water drainage device of claim 1, wherein the PLC control cabinet is in communication connection with an electromagnetic flowmeter.
6. The central air-conditioning cooling water draining device of claim 1, wherein the PLC control cabinet is connected with a computer in communication.
7. The central air-conditioning cooling water drainage device as claimed in claim 1, wherein the cloud server is connected with a mobile terminal in a communication way.
8. The central air conditioning cooling water draining device of claim 7, wherein the mobile terminal is a mobile phone terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111351955.8A CN114105267A (en) | 2021-11-16 | 2021-11-16 | Central air conditioning cooling water drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111351955.8A CN114105267A (en) | 2021-11-16 | 2021-11-16 | Central air conditioning cooling water drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114105267A true CN114105267A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111351955.8A Pending CN114105267A (en) | 2021-11-16 | 2021-11-16 | Central air conditioning cooling water drainage device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2584599Y (en) * | 2002-10-31 | 2003-11-05 | 彭奇凡 | Control device for chemical treatment of circulating water of central air conditioner |
| JP2010149054A (en) * | 2008-12-25 | 2010-07-08 | Hakuto Co Ltd | Method for controlling water quality in circulating cooling water system |
| CN104250042A (en) * | 2014-09-22 | 2014-12-31 | 许锦璐 | Integrated equipment and method for automatically treating circulating cooling water and recycling sewage water |
| CN204138472U (en) * | 2014-09-22 | 2015-02-04 | 许锦璐 | Automatically the integrated equipment with sewer reuse is processed for recirculated cooling water |
| CN105540775A (en) * | 2016-01-28 | 2016-05-04 | 上海机场（集团）有限公司虹桥国际机场公司 | Water treatment system and work method thereof |
-
2021
- 2021-11-16 CN CN202111351955.8A patent/CN114105267A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2584599Y (en) * | 2002-10-31 | 2003-11-05 | 彭奇凡 | Control device for chemical treatment of circulating water of central air conditioner |
| JP2010149054A (en) * | 2008-12-25 | 2010-07-08 | Hakuto Co Ltd | Method for controlling water quality in circulating cooling water system |
| CN104250042A (en) * | 2014-09-22 | 2014-12-31 | 许锦璐 | Integrated equipment and method for automatically treating circulating cooling water and recycling sewage water |
| CN204138472U (en) * | 2014-09-22 | 2015-02-04 | 许锦璐 | Automatically the integrated equipment with sewer reuse is processed for recirculated cooling water |
| CN105540775A (en) * | 2016-01-28 | 2016-05-04 | 上海机场（集团）有限公司虹桥国际机场公司 | Water treatment system and work method thereof |
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Application publication date: 20220301 |