CN2742372Y - Rotary pulse air flow cleaning vertical water cooler - Google Patents
Rotary pulse air flow cleaning vertical water cooler Download PDFInfo
- Publication number
- CN2742372Y CN2742372Y CN 200420068423 CN200420068423U CN2742372Y CN 2742372 Y CN2742372 Y CN 2742372Y CN 200420068423 CN200420068423 CN 200420068423 CN 200420068423 U CN200420068423 U CN 200420068423U CN 2742372 Y CN2742372 Y CN 2742372Y
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- cleaning
- water cooling
- rotary
- pipe
- cooling tube
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Abstract
The utility model discloses a rotary pulse air flow cleaning vertical water cooler whose water cooling pipe is provided with a cleaning element inside. The cleaning element can be a cleaning granule or a cleaning brush, and the pipe orifices at two ends are meshed by a pipe orifice cover. A rotary gas nozzle generating pulse airflow is arranged in the bottom compartment of an inlet, and the rotation period can be adjusted through a speed regulation plate. The cleaning gas jetted from the rotary gas nozzle in each cycle can drive the cleaning element in the water cooling pipe to proceed with acutely up-and-down motion once, which can realize on-line and quick cleaning and ensure high-efficiency running for a long time. The water cooler has simple structure, easy and simple operation, low pressure of the cleaning gas, less wastage, low energy consumption and low cleaning expense.
Description
Technical field
The utility model patent relates to the vertical water cooler of rotary pulsed gasflow clean-up.The vertical water cooler of this structure can be widely used in vertical water cooler and other vertical water cooling equipment of freezing unit.
Background technology
The cooling water of the vertical water cooler of traditional structure flows in pipe from top to bottom, and mean flow rate is low, and the water distribution of each pipe is very inhomogeneous, fouling easily again, and cooling effectiveness is generally very low, ice maker unit operation energy consumption height.
Prevent and treat the way of incrustation scale in the vertical water-cooled organ pipe, many employing pipe cleaners and giant and jet thereof, the easy scratch inside pipe wall of pipe cleaner, the cleannes of giant scale removal are not high, the cost of jet is too high, and three's washing and cleaning operation all labour intensity is big.One of more advanced technology is a pipe inside spin automatic cleaning technology.According to paper (Zhou Li etc., vertical water cooler dirt cleans the tie Study on Structure Optimizing automatically, University Of Xiangtan's natural science journal, 2001,23 (1): 88-90) report, adopt the result of use of smooth twisted strip of little torque good, can be under low flow velocity the dirt in the scavenge pipe automatically, can improve heat transfer coefficient 27.5% again.But find in the long-time running that two problems still fail further to be solved: because the water distribution of each pipe is very inhomogeneous, have a certain proportion of water cooling tube because of the water yield very little twisted strip can not rotate; Mouth of pipe bearing wear is too fast, and reliability is not enough, and expense is higher.Two of more advanced technology is circulating fluidization heat exchanger technologies in the tube side, for example patent EP262725 and Chinese patent ZL91106682.9, according to paper (Yu Xiumin, circulating fluidization high-performance heat exchanger research in the tube side, 1996, University Of Xiangtan's natural science journal, 1996,18 (1): 82-85) Bao Dao technology result of use is fine really, and the dirt in the scavenge pipe automatically can improve the cooling condensation ability of equipment again significantly.But, after the several years operation, aspect reliability, expose two problems: the one, fluidized grain outside the downstream chamber goes to equipment, causes the loss of fluidized grain, when especially flow fluctuates widely easily; The 2nd, the sieve aperture of the sieve plate little by little particle of accumulation property stops up.
Summary of the invention
The utility model patent is intended to solve better the defective of Fouling Cleaning prior art in the vertical water-cooled organ pipe, the vertical water cooler of a kind of rotary pulsed gasflow clean-up is proposed, the rotary pulsed air-flow that produces by the rotary jet pipe drives pumping of cleaning element in the vertical water cooling tube, realize the Rapid Cleaning of incrustation scale in the pipe, reach the purpose that significantly improves operational efficiency, and body construction remains unchanged, and manufacturing expense seldom increases, and cleaning charge is very cheap.
The technical scheme of the utility model patent is:
The vertical water cooler of rotary pulsed gasflow clean-up is made of water cooling tube, housing, bottom compartment, cleaning element, air bound plate, rotary jet pipe, speed adjusting plate etc.Place a certain amount of cleaning element in the every water cooling tube, mouth of pipe cover all is equipped with at two ends up and down, and cleaning element is remained in each water cooling tube.Cleaning element can be the solid particle of spheroidal, elliposoidal or other shape, also can be cleaning brush.But, no matter cleaning particle or cleaning brush, the maximum gauge in its cross section all requires significantly less than the water cooling tube internal diameter, and the diameter of its smallest cross-sectional all must be greater than the mesh size of water cooling tube mouth of pipe cover.Cleaning element sinking speed must be greater than the speed of the cooling water in the water-cooled organ pipe.Be provided with that rotating speed can be regulated, as to produce air pulse rotary jet pipe in the import bottom compartment.Speed adjusting plate of installing on the rotary jet pipe and the angle between the vertical plane can change by positioning screw and location orifice plate.The pulse period of air-flow can significantly change its rotational resistance by the angle that changes between speed adjusting plate and the vertical plane, the purpose that regulate performance period.
During production run, cooling water is from bottom to top with speed u slowly
1Upwards, be markedly inferior to the free-falling velocity u of cleaning element in cooling water
3, so cleaning element all rests in the mouth of pipe cover of lower end.When incrustation scale need clean in the pipe, open intake valve, air jet pipe is jet, by jet propulsive thrust effect rotation automatically lentamente.The gas of ejection floats to the space that the air bound plate is cut apart on rapidly, through the buoyance lift motion that makes progress of this regional water cooling tube.At one time, these are little by little increased by the bubble volume in the jet water cooling tube of air jet pipe, and other is not subjected to forming between the jet most of water cooling tubes of air jet pipe the linker with very big differential static pressure.Under the effect of this big differential static pressure, these are subjected to the air-water mixture in the jet water cooling tube of air jet pipe to produce stream fast, its speed u
2Significantly greater than the free-falling velocity u of cleaning element in cooling water
3, drive cleaning element and move upward together.Because in the flow process of solution-air two-phase mixture, bubble stirs very violent with respect to the buoyance lift motion of cooling water to water, it is the compound movement that fluctuation is arranged, rotation is arranged that cleaning element moves upward, with water cooling tube inwall collision friction continually, can quickly and efficiently the Fouling Cleaning of inside pipe wall be removed.Cleaning element moves to the upper end of water cooling tube and is lived by mouth of pipe cover shelves, and the liquid level that purge gas floats in the downstream chamber drains into atmosphere.After these water cooling tubes are left in the air jet pipe rotation, no longer include gas in these water cooling tubes, be returned to low flow velocity u again
1, be markedly inferior to the free-falling velocity u of cleaning element under the gravity effect
3, at the cleaning element of water cooling tube upper pipes mouth mask with (u
3-u
1) speed sink up to the mouth of pipe cover of lower end.Therefore, the rotary jet pipe whenever rotates a circle, and the cleaning element in each water cooling tube just pumps in water cooling tube, to the Fouling Cleaning of water cooling tube inwall once.So repeat, can clean the incrustation scale in the water cooling tube completely soon.Speed adjusting plate of installing on the rotary jet pipe and the angle between the vertical plane can change by positioning screw and location orifice plate through hand hole, increase significantly or lower its rotational resistance with this, reach the purpose of regulating the air-flow pulse period.
Therefore, the vertical water cooler of this structure not only can be implemented in line and cleans, and cleaning speed is fast.The shell side fluid pressure that purge gas need overcome is little, only needs the low pressure gas body source.Scavenging period is short, and the consumption of purge gas is few, and power cost is cheap.By periodic cleaning, can in time remove the inside pipe wall dirt, the efficient operation that support equipment is long-term.
Description of drawings
The structure principle chart of the vertical water cooler of the rotary pulsed gasflow clean-up of Fig. 1
Fig. 2 air bound plate structure A-A profile
Fig. 3 air jet pipe speed regulating structure principle (B to) schematic diagram
Among the figure: 1. downstream chamber's 2 mouth of pipe covers 3. housings 4. water cooling tubes 5. cleaning brush 6. clean particle 7 air bound plates 8 bottom compartments 9 rotary jet pipes, 10 air inlet pipe, 11 air gauges, 12 air valves, 13 speed adjusting plates, 14 hand holes, 15 positioning screws, 16 location orifice plate 17 dead axles
The specific embodiment
Specific embodiments below in conjunction with accompanying drawing 1 explanation the utility model patent:
Place cleaning brush 5 in the every water cooling tube 4 of the vertical water cooler of rotary pulsed gasflow clean-up or clean particles 6, clean particle 6 and can be spheroidal or elliposoidal, also can be the thick solid particle of other shape.Cleaning brush 5 or the density p of cleaning particle 6
sMust be greater than the density p of cooling water
w, its ratio (ρ
s/ ρ
w) in 1.3～2.6 scopes.Cleaning element is at the free-falling velocity u of cooling water
3Must be higher than the cooling water flow velocity u in the water cooling tube 4 significantly
1Cleaning brush 5 or cleaning particle 6 can adopt the engineering plastics manufacturing, and for example nylon is not only corrosion-resistant, ageing-resistant, and can make the cleaning element of transferring different densities as required.Cleaning brush 5 or the maximum diameter d of cleaning particle 6 cross sections
MaxMust be less than the inside diameter D of water cooling tube 4, ratio (d
Max/ D) below 0.85.Mouth of pipe cover 2 all is equipped with at the two ends up and down of water cooling tube 4.The area of space that 8 top is not interconnected by air bound plate 7 level that is divided in the bottom compartment.The center of bottom compartment 8 is equipped with rotary jet pipe 9.
During production run, cooling water is from bottom to top with speed u slowly
1By water cooling tube 4, be markedly inferior to cleaning brush 5 or clean the free-falling velocity u of particle 6 in cooling water
3, so cleaning brush 5 or clean mouth of pipe cover 2 the insides that particle 6 all rests on water cooling tube 4 lower ends.When the incrustation scale in the water cooling tube 4 need clean, open air valve 12, to regulate air pressure and make air gauge 11 reach a predetermined value, rotary jet pipe 9 is normally jet, by jet propulsive thrust effect rotation automatically lentamente.Float to the space that air bound plate 7 is cut apart on the gas of ejection, through this upwards buoyance lift motion of regional water cooling tube 4.At one time, these are little by little increased by the bubble volumes in the jet water cooling tube of rotary jet pipe 94, and other is not subjected to forming the linker with very big differential static pressure between the jet most of water cooling tubes 4 of rotary jet pipe 9.Under the effect of this big differential static pressure, these are subjected to rotary jet pipe 9 jet water cooling tube 4 interior air-water mixtures to produce quick stream upwards, its speed u
2Significantly greater than cleaning brush 5 or clean the free-falling velocity u of particle 6 in cooling water
3, drive cleaning brush 5 or cleaning particle 6 move upward together.Because in the flow process of solution-air two-phase mixture, bubble stirs very violent with respect to the buoyance lift motion of cooling water to water, cleaning brush 5 or the compound movement of cleaning particle 6 be fluctuation, rotation, continually with water cooling tube inwall collision friction, can quickly and efficiently the Fouling Cleaning of water cooling tube 4 inwalls be removed.Cleaning brush 5 or clean the upper end that particle 6 moves to water cooling tube 4 and lived for 2 grades by mouth of pipe cover, purge gas float in the downstream chamber 1 liquid level and drain into atmosphere.After these water cooling tubes 4 are left in the rotation of rotary jet pipe, no longer include gas in these water cooling tubes 4, cooling water is returned to low flow velocity u again
1, be markedly inferior to cleaning brush 5 or clean the free-falling velocity u of particle 6 under the gravity effect
3, at the cleaning brush 5 of water cooling tube 4 upper pipes mouth masks 2 or clean particle 6 with (u
3-u
1) speed sink up to the mouth of pipe cover 2 of lower end.Therefore, rotary jet pipe 9 whenever rotates a circle, the cleaning brush 5 in each water cooling tube 4 or clean particles 6 and just in water cooling tube, pump once, to the Fouling Cleaning of water cooling tube 4 inwalls once.So repeated several times just can be cleaned the incrustation scale in the water cooling tube 4 completely about half an hour.Obviously, the cycle of air pulse must be greater than the swing circle of rotary jet pipe 9.If the rotary speed of rotary jet pipe 9 is too fast or too slow, during less than regulating cycle, can increase or lower its rotational resistance through hand hole 14 by the angle between positioning screw 15 and location orifice plate 16 change speed adjusting plates 13 and the vertical plane, reach the purpose of regulating the air-flow pulse period.
Example 1, test in the vertical carbon steel pipe water cooler of Φ 25 * 2.5 * 5000, diameter 13.7mm, the density 1100Kg/m of cleaning particle 6
3, the average speed that cleaning particle 6 moves upward reaches 1.71m/s, and the average speed that moves downward is 0.23m/s.Clean 6 each about 2.6 seconds of washing motion times once up and down reciprocatingly of particle, water cooling tube 4 every each purge gas consumptions are 2.80 * 10
-4m
3Adorning 5 in every water cooling tube 4 cleans particles 6, the cooling water flow velocity fluid resistance when 0.05m/s～0.32m/s and has only 120Pa～1080Pa; Adorning 10 in every water cooling tube 4 cleans particles 6, the cooling water flow velocity fluid resistance when 0.05m/s～0.32m/s and has only 150Pa～1710Pa.
For film-cooled heat 200m
2Vertical water cooler, only need 72m by the gas usage of this calculating
3About/h; The pressure of purge gas requires also very low, and 60Kpa is above just enough, about 1 yuan of power consumption expense.Therefore, the vertical water cooler of this new construction not only can be implemented in line and cleans, and cleaning speed is fast.The shell side fluid pressure that purge gas need overcome is little, only needs the low pressure gas body source.Easy and simple to handle, scavenging period is short, the consumption of purge gas seldom, expense is very cheap.By periodic cleaning, in time remove dirt in the pipe, the efficient operation that support equipment is long-term.
Claims (4)
1. the vertical water cooler of rotary pulsed gasflow clean-up, by water cooling tube (4), housing (3), bottom compartment (8), air bound plate (7), rotary jet pipe (9), speed adjusting plate formations such as (13), it is characterized in that being placed with in the water cooling tube (4) cleaning brush (5) or clean particle (6), mouth of pipe cover (2) is equipped with at two ends up and down, be provided with rotary jet pipe (6) in the bottom compartment (8), rotary jet pipe (9) is gone up the speed adjusting plate (13) of installation and the angle between the vertical plane can be rotated adjusting.
2. the vertical water cooler of rotary pulsed gasflow clean-up according to claim 1 is characterized in that rotary jet pipe (9) is gone up the speed adjusting plate of installing (13) and the angle between the vertical plane can pass through positioning screw (15) and location orifice plate (16) changes.
3. the vertical water cooler of rotary pulsed gasflow clean-up according to claim 1, it is characterized in that cleaning particle (6) can be the solid particle of spheroidal, elliposoidal or other shape, and the minimum diameter in its cross section must be greater than the mesh size of the mouth of pipe cover (2) of water cooling tube (4).
4. the vertical water cooler of rotary pulsed gasflow clean-up according to claim 1 is characterized in that cleaning brush (5), requires the maximum diameter d in its cross section
MaxSignificantly less than the inside diameter D of water cooling tube (4), its ratio (d
Max/ D) less than 0.85.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420068423 CN2742372Y (en) | 2004-08-16 | 2004-08-16 | Rotary pulse air flow cleaning vertical water cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420068423 CN2742372Y (en) | 2004-08-16 | 2004-08-16 | Rotary pulse air flow cleaning vertical water cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2742372Y true CN2742372Y (en) | 2005-11-23 |
Family
ID=35477840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420068423 Expired - Fee Related CN2742372Y (en) | 2004-08-16 | 2004-08-16 | Rotary pulse air flow cleaning vertical water cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2742372Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374822A (en) * | 2010-08-23 | 2012-03-14 | 中国石油化工股份有限公司 | Online decoking method of cooler in ammonia oxidation reaction system |
| CN106643214A (en) * | 2015-11-02 | 2017-05-10 | 中国石油化工股份有限公司 | Scale prevention heat exchanger |
-
2004
- 2004-08-16 CN CN 200420068423 patent/CN2742372Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374822A (en) * | 2010-08-23 | 2012-03-14 | 中国石油化工股份有限公司 | Online decoking method of cooler in ammonia oxidation reaction system |
| CN106643214A (en) * | 2015-11-02 | 2017-05-10 | 中国石油化工股份有限公司 | Scale prevention heat exchanger |
| CN106643214B (en) * | 2015-11-02 | 2018-11-30 | 中国石油化工股份有限公司 | Scale-proof heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |