CN215676641U - Central air conditioning recirculated cooling water processing system - Google Patents
Central air conditioning recirculated cooling water processing system Download PDFInfo
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- CN215676641U CN215676641U CN202122176546.0U CN202122176546U CN215676641U CN 215676641 U CN215676641 U CN 215676641U CN 202122176546 U CN202122176546 U CN 202122176546U CN 215676641 U CN215676641 U CN 215676641U
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Abstract
The utility model relates to a circulating cooling water treatment system of a central air conditioner. In the current mode of treating the circulating water of the air conditioner, the scheme of additionally arranging the cyclone filter has insufficient filtering precision, can not remove microorganisms in water and has higher energy consumption; the medicament adding scheme does not remove the generated microorganism slime-grade solid particles, so that the running resistance is increased, and the heat exchange efficiency is reduced. The system comprises a cooling tower and a water chilling unit, wherein a pipeline is arranged between the cooling tower and the water chilling unit to form circulation; the pipeline from the cooling tower to the water chilling unit is provided with a branch connected in parallel, and the branch is provided with an ultrafiltration membrane and a scale inhibitor. The utility model can control the impurities such as scale formation of circulating water, microorganism slime, suspended matters and the like, improve the concentration multiple of the circulating water, and control the approaching temperature of the condenser, thereby achieving the purposes of saving water and electricity.
Description
Technical Field
The utility model relates to the technical field of air conditioning equipment, in particular to a circulating cooling water treatment system of a central air conditioner.
Background
In the operation of the cooling tower of the open central air conditioner, a large amount of circulating cooling water in the system is in contact with air and brings a large amount of dust and microorganisms, and along with the evaporation of the cooling water, microorganism slime and impurities in water are continuously concentrated, so that the heat transfer efficiency is reduced. At present, the main treatment mode is to add a cyclone filter, add a medicament or carry out no treatment operation, and discharge a large amount of sewage.
The scheme of adding the cyclone filter has insufficient filtering precision, can not remove microorganisms in water, and has higher energy consumption. The operation of adding the medicament is a relatively complete and mature process, but because the generated microorganism slime-grade solid particles are not removed, the solid particles are continuously accumulated along with the evaporation of water, so that the operation resistance is increased, and the heat exchange efficiency is reduced. The other disadvantage of the operation of adding the medicament is that the medicament needs to be added manually every day, the labor cost is high, and if the medicament is not added timely, a large amount of water scale is easily generated.
Disclosure of Invention
The utility model aims to provide a circulating cooling water treatment system of a central air conditioner, wherein an ultrafiltration system and a scale inhibitor are arranged on a circulating water branch, and particle impurities, colloid, slime, bacteria and the like in the system are discharged together.
The technical scheme adopted by the utility model is as follows:
the utility model provides a central air conditioning recirculated cooling water processing system which characterized in that:
the system comprises a cooling tower and a water chilling unit, wherein a pipeline is arranged between the cooling tower and the water chilling unit to form circulation;
the pipeline from the cooling tower to the water chilling unit is provided with a branch connected in parallel, and the branch is provided with an ultrafiltration membrane and a scale inhibitor.
The ultrafiltration membrane is an external pressure ultrafiltration membrane, the external pressure ultrafiltration membrane is arranged in a water tank, and a water inlet pipe output from the cooling tower is connected into the water tank;
the external pressure milipore filter bottom is provided with the inlet port, and the top is passed through the collector pipe and is inserted the self priming pump, and the self priming pump inserts the outlet pipe, and the antisludging device setting is on the pipeline that the self priming pump inserted the outlet pipe.
The pipeline of the input end of the self-priming pump is provided with a vacuum pressure gauge, and the pipeline of the output end of the self-priming pump is provided with a pressure gauge.
The bottom of the water tank is provided with a sewage discharge pipe.
The water outlet pipe is provided with a flowmeter.
A float switch is arranged in the water tank.
The ultrafiltration membrane is an internal pressure ultrafiltration membrane, a water inlet pipe output from the cooling tower is connected to the internal pressure ultrafiltration membrane through a connection booster pump, the internal pressure ultrafiltration membrane is connected to a scale inhibitor through an ultrafiltration water outlet pipe, and the scale inhibitor is connected to a water outlet pipe.
The pipeline of the input end of the booster pump is provided with a water inlet pressure gauge, and the pipeline of the output end of the booster pump is provided with a membrane front pressure gauge.
And a membrane rear pressure gauge is arranged on a pipeline at the output end of the internal pressure ultrafiltration membrane.
The internal pressure ultrafiltration membrane is connected with a drain pipe.
The utility model has the following advantages:
the system can control the impurities such as scale formation of circulating water, microorganism slime, suspended matters and the like, improve the concentration multiple of the circulating water, and control the approaching temperature of the condenser, thereby achieving the purposes of saving water and electricity. Compared with the traditional water treatment scheme, the utility model can improve the concentration multiple of circulating water from 5 times to 8 times, reduce the using amount of the bactericide and has better energy-saving effect. Meanwhile, the utility model has the advantages of less medicament addition, saving a large amount of manpower and material resources compared with the prior scheme, more thorough water treatment, convenient operation, less pollution discharge and reduced use cost.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
FIG. 2 is a view showing the construction of a system of the present invention using an external pressure ultrafiltration membrane module (example 1).
FIG. 3 is a view showing the construction of a system using an internal pressure ultrafiltration membrane module according to the present invention (example 2).
The labels in the figure are:
1. a water inlet pipe; 2. a float switch; 3. a water tank; 4. externally pressing the ultrafiltration membrane; 41. an air inlet; 5. a water collection pipe; 6. a vacuum pressure gauge; 7. a self-priming pump; 8. a pressure gauge; 9. a scale inhibitor; 10. a flow meter; 11. a water outlet pipe; 12. a blow-off pipe; 13-water inlet pressure gauge; 14-a booster pump; 15-membrane front pressure gauge; 16-internal pressure ultrafiltration membrane; 17-an ultrafiltration water outlet pipe; 18-membrane back pressure gauge.
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
The utility model relates to a circulating cooling water treatment system of a central air conditioner, which comprises a cooling tower and a water chilling unit, wherein a pipeline is arranged between the cooling tower and the water chilling unit to form circulation; a pipeline from the cooling tower to the water chilling unit is provided with a branch connected in parallel, an ultrafiltration membrane and a scale inhibitor 9 are arranged on the branch, and circulating water is firstly treated by ultrafiltration and then enters the scale inhibitor 9. The scale inhibitor 9 is filled with a solid slow-release scale inhibitor, and after water flows through the scale inhibitor, scale inhibition factors can be slowly released. The scale inhibitor is filled with a scale inhibiting material of template-assisted crystallization (TAC), and after water flows through the TAC material, calcium ions and bicarbonate ions in water form micro clusters or micro crystals to inhibit scale formation.
The ultrafiltration membrane can be organic membrane, inorganic membrane, such as curtain membrane, column membrane, and flat membrane, or inorganic membrane, such as ceramic internal pressure membrane, ceramic flat membrane, such as internal pressure type ultrafiltration membrane 16 or external pressure type ultrafiltration membrane 4, for treating circulating water.
As shown in fig. 2, in example 1, the ultrafiltration membrane is an external pressure ultrafiltration membrane 4, the external pressure ultrafiltration membrane 4 is arranged in a water tank 3, and a water inlet pipe 1 output from a cooling tower is connected to the water tank 3. A drain pipe 12 is arranged at the bottom of the water tank 3, and the ultrafiltered concentrated water is discharged as the waste water of the circulating cooling water.
External pressure milipore filter 4 bottoms are provided with inlet port 41, and the top is passed through collector pipe 5 and is inserted self priming pump 7, and self priming pump 7 inserts outlet pipe 11, and antisludging device 9 sets up on the pipeline that self priming pump 7 inserts outlet pipe 11. A vacuum pressure gauge 6 is arranged on the pipeline at the input end of the self-sucking pump 7, and a pressure gauge 8 is arranged on the pipeline at the output end of the self-sucking pump 7. A flowmeter 10 is arranged on the water outlet pipe 11. A float switch 2 is arranged in the water tank 3.
The external pressure ultrafiltration membrane 4 adopts aeration to scrub the ultrafiltration membrane and vacuum-pumps the produced water.
The rivers of branch road can keep the water level in the float switch 2 gets into water tank 3, and the water tank bottom sets up blow off pipe 12, and the blowdown flow is confirmed according to the concentration multiple, and is different according to quality of water, and the design concentration multiple is 3-10 times, and the advantage of setting in the bottom is that the granule impurity of aquatic slowly sinks to the bottom, can discharge along with the drainage. The water tank 3 is internally provided with an immersed ultrafiltration membrane, the product is a general product, the top of the ultrafiltration membrane component is provided with a water collecting pipe 5, ultrafiltration water is conveyed to a scale inhibitor 9 through a self-sucking pump 7, the water enters the main pipeline after being treated by the scale inhibitor 9, and a branch is provided with a water flowmeter 10. Pressure gauges are respectively arranged at the water inlet and the water outlet of the self-priming pump 7 so as to monitor whether the system operates normally. Compressed air is pumped into the lower part of the membrane component through the air inlet 41, and bubbles scrub the surface of the membrane from bottom to top so as to reduce the concentration polarization phenomenon on the surface of the membrane and slow down membrane pollution. The scheme has the advantages that the continuous operation can be realized, and the membrane is not easy to be polluted and blocked. The chemical cleaning can be carried out regularly according to the pollution condition of the membrane.
As shown in fig. 3 of embodiment 2, in this embodiment, the ultrafiltration membrane is an internal pressure ultrafiltration membrane 16, the water inlet pipe 1 output from the cooling tower is connected to the internal pressure ultrafiltration membrane 16 through the connection booster pump 14, the internal pressure ultrafiltration membrane 16 is connected to the scale inhibitor 9 through the ultrafiltration water outlet pipe 17, and the scale inhibitor 9 is connected to the water outlet pipe 11. The internal pressure ultrafiltration membrane 16 is connected with a sewage discharge pipe 12.
A water inlet pressure gauge 13 is arranged on the pipeline at the input end of the booster pump 14, and a membrane front pressure gauge 15 is arranged on the pipeline at the output end of the booster pump 14. And a pipeline at the output end of the internal pressure ultrafiltration membrane 16 is provided with a membrane rear pressure gauge 18.
The water in the branch is firstly pressurized by a booster pump 14 and enters the water inlet end of an ultrafiltration membrane, the ultrafiltration membrane is an internal pressure type ultrafiltration membrane, and the water is filtered by the ultrafiltration membrane and enters a scale inhibitor 9 under the driving of pressure. The front end and the rear end of the ultrafiltration membrane are both provided with pressure gauges, a flowmeter 10 is installed at the water purification end of the ultrafiltration membrane, the pollution degree of the ultrafiltration membrane is evaluated through the pressure difference and the flow value before and after the membrane, a drain outlet of the system is arranged at a drain outlet of the ultrafiltration membrane, the valve of the drain outlet is controlled to adjust the drain quantity, and the operation can be carried out in a cross flow filtration mode or a dead-end filtration mode and an intermittent flushing mode.
In the system of the utility model, the advantage of adding ultrafiltration at the front end of the scale inhibitor 9 is that most particle impurities, colloids and microorganisms in water are filtered by ultrafiltration, so that the water flowing through the scale inhibitor 9 is cleaner, and the scale inhibitor is favorable for playing a scale inhibition role. Another benefit of the ultrafiltration treatment is that through the circulation filtration, the particle impurities, the microorganism slime and the microorganisms in the circulating cooling water are all filtered, the water turbidity is lower (the turbidity in the traditional circulating water is 10-100NTU, and the circulating water turbidity through the circulation ultrafiltration filtration can be kept below 5), thus the nucleation substances in the water can be reduced, the surface of the filler of the cooling tower is not easy to breed the scale and the slime, and the heat transfer efficiency is increased. And scale and slime are not easy to adhere to the surface of a heat exchanger in the water chilling unit, so that the heat exchange efficiency is increased, the small temperature difference (the difference between the temperature of a refrigerant out of the heat exchanger and the temperature of a cooling water entering the heat exchanger) is reduced, and the system can run more efficiently and energy-saving.
The utility model is not limited to the examples, and any equivalent changes to the technical solution of the utility model by a person skilled in the art after reading the description of the utility model are covered by the claims of the utility model.
Claims (10)
1. The utility model provides a central air conditioning recirculated cooling water processing system which characterized in that:
the system comprises a cooling tower and a water chilling unit, wherein a pipeline is arranged between the cooling tower and the water chilling unit to form circulation;
a pipeline from the cooling tower to the water chilling unit is provided with a branch in parallel connection, and an ultrafiltration membrane and a scale inhibitor (9) are arranged on the branch.
2. The circulating cooling water treatment system of the central air conditioner as claimed in claim 1, wherein:
the ultrafiltration membrane is an external pressure ultrafiltration membrane (4), the external pressure ultrafiltration membrane (4) is arranged in the water tank (3), and a water inlet pipe (1) output from the cooling tower is connected into the water tank (3);
external pressure milipore filter (4) bottom is provided with inlet port (41), and self priming pump (7) are inserted through collector pipe (5) in the top, and self priming pump (7) insert outlet pipe (11), and antisludging device (9) set up on the pipeline that self priming pump (7) insert outlet pipe (11).
3. The system of claim 2, wherein:
a vacuum pressure gauge (6) is arranged on a pipeline at the input end of the self-sucking pump (7), and a pressure gauge (8) is arranged on a pipeline at the output end of the self-sucking pump (7).
4. The system of claim 3, wherein:
a sewage discharge pipe (12) is arranged at the bottom of the water tank (3).
5. The system of claim 4, wherein the circulating cooling water treatment system of the central air conditioner comprises:
a flowmeter (10) is arranged on the water outlet pipe (11).
6. The system of claim 5, wherein:
a floating ball switch (2) is arranged in the water tank (3).
7. The circulating cooling water treatment system of the central air conditioner as claimed in claim 1, wherein:
the ultrafiltration membrane is an internal pressure ultrafiltration membrane (16), a water inlet pipe (1) output from the cooling tower is connected to the internal pressure ultrafiltration membrane (16) through a connection booster pump (14), the internal pressure ultrafiltration membrane (16) is connected to a scale inhibitor (9) through an ultrafiltration water outlet pipe (17), and the scale inhibitor (9) is connected to a water outlet pipe (11).
8. The system of claim 7, wherein:
a water inlet pressure gauge (13) is arranged on the pipeline at the input end of the booster pump (14), and a membrane front pressure gauge (15) is arranged on the pipeline at the output end of the booster pump (14).
9. The system of claim 8, wherein:
and a membrane rear pressure gauge (18) is arranged on a pipeline at the output end of the internal pressure ultrafiltration membrane (16).
10. The system of claim 9, wherein:
the internal pressure ultrafiltration membrane (16) is connected with a sewage discharge pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122176546.0U CN215676641U (en) | 2021-09-09 | 2021-09-09 | Central air conditioning recirculated cooling water processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122176546.0U CN215676641U (en) | 2021-09-09 | 2021-09-09 | Central air conditioning recirculated cooling water processing system |
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| CN215676641U true CN215676641U (en) | 2022-01-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116256025A (en) * | 2023-05-15 | 2023-06-13 | 北京视酷科技有限公司 | Aeration data monitoring system of ultra-filtration water device |
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2021
- 2021-09-09 CN CN202122176546.0U patent/CN215676641U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116256025A (en) * | 2023-05-15 | 2023-06-13 | 北京视酷科技有限公司 | Aeration data monitoring system of ultra-filtration water device |
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