CN110081735A - Centrifugal exhausting crossing current closed cooling tower - Google Patents
Centrifugal exhausting crossing current closed cooling tower Download PDFInfo
- Publication number
- CN110081735A CN110081735A CN201910470620.4A CN201910470620A CN110081735A CN 110081735 A CN110081735 A CN 110081735A CN 201910470620 A CN201910470620 A CN 201910470620A CN 110081735 A CN110081735 A CN 110081735A
- Authority
- CN
- China
- Prior art keywords
- tower body
- heat exchange
- air
- water
- exchange coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000000945 filler Substances 0.000 claims abstract description 42
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 239000010865 sewage Substances 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 13
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 abstract description 7
- 238000001704 evaporation Methods 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract description 4
- 239000000498 cooling water Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/14—Direct-contact trickle coolers, e.g. cooling towers comprising also a non-direct contact heat exchange
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/08—Splashing boards or grids, e.g. for converting liquid sprays into liquid films; Elements or beds for increasing the area of the contact surface
- F28F25/085—Substantially horizontal grids; Blocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/10—Component parts of trickle coolers for feeding gas or vapour
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses centrifugal exhausting crossing current closed cooling towers, including pedestal and tower body, the tower body is located at the top of pedestal, the tower body includes air inlet and air outlet, the air inlet and air outlet are located at the two sides of tower body, and the tower body is internally provided with heat exchange coil, is provided with filler assembly between the heat exchange coil, the filler assembly includes primary strainer, active carbon filler and secondary strainer, and the active carbon filler is located between primary strainer and secondary strainer.The present invention is not contacted directly by the recirculated cooling water of setting with air, and heat is first transmitted to by shower water by heat exchange coil, shower water is directly contacted with air again, by the evaporation of shower water and with the heat transfer of air, finally transfer heat to the cooling device of atmosphere, the air, shower water and the heat exchange guarantee cooling effect for managing interior recirculated water for cooperating circulation simultaneously, can be realized the quickly cooling time for reducing cooling, improve cooling efficiency.
Description
Technical field
The present invention relates to cooling tower technical field more particularly to centrifugal exhausting crossing current closed cooling towers.
Background technique
With the implementation of national energy conservation and emission reduction policy and the increasingly scarcity of water resource, closed cooling tower was in steel in recent years
The industries such as metallurgy, power electronics, machining, air-conditioning system are widely used.
Cooling tower is to use water as circulating coolant, heat dissipation is absorbed from a system into atmosphere, to reduce water temperature
Device, and traditional cooling tower running part uses axial flow blower, and it is higher and press that axial fan is generally used for traffic requirement
The lower occasion of force request is adapted for mount on ground or the more wide region of flooring.Because part cooling tower installation site is limited,
It is such as placed on the melt pit to draw badly, on building annex or in ventilating duct, ventilation pressure is not able to satisfy using plain shaft stream
It is required that the cooling that will cause cooling tower is not got off.If increasing cooling tower effective area to guarantee cooling tower cooling capacity
Or increase motor, and will cause different degrees of noise pollution, very big puzzlement is brought to neighbouring resident, often to be spent very
Big cost goes to carry out noise reduction processing.
Therefore, it needs to design centrifugal exhausting crossing current closed cooling tower to solve the above problems.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and the centrifugal exhausting crossing current proposed is closed
Formula cooling tower.
To achieve the goals above, present invention employs following technical solutions:
Centrifugal exhausting crossing current closed cooling tower, including pedestal and tower body, the tower body is located at the top of pedestal, described
Tower body includes air inlet and air outlet, and the air inlet and air outlet are located at the two sides of tower body, and the inside of the tower body is set
It is equipped with heat exchange coil, filler assembly is provided between the heat exchange coil, the filler assembly includes primary strainer, active carbon
Filler and secondary strainer, the active carbon filler are located between primary strainer and secondary strainer, and the primary strainer is located at secondary
The top of strainer, the side of the tower body are provided with centrifugal blower, and the centrifugal blower is internally provided with motor, the tower body
A side position be provided with mounting base, feeding spraying pump has been bolted above the mounting base, the feeding spraying pump
One end of water inlet and one end of water outlet are respectively arranged with aqueduct and bridge piece, and the bridge piece is far from feeding spraying pump
One end of water outlet is provided with flange, and the side inner wall of the tower body is provided with the first conduit, and the bridge piece passes through flange
It is connect with the first conduit, the top position inside the tower body is provided with the second conduit, and the bottom of second conduit is provided with
The spray head equidistantly distributed, it is described.
Further, in the present solution, the side of the tower body is provided with maintenance door.
Further, in the present solution, the pedestal is internally provided with cavity, one end of the aqueduct is plugged on cavity
Inside.
Further, in the present solution, the side outer wall of the pedestal is provided with inlet and outlet, the water inlet
Inside is fixedly installed with water inlet pipe, and one end of the water inlet pipe and one end of heat exchange coil are welded, and the inside of the water outlet is solid
Dingan County is equipped with outlet pipe, and the other end of the outlet pipe and the other end of heat exchange coil connect.
Further, in the present solution, the side of the pedestal is provided with sewage draining exit and overflow port, the sewage draining exit and overflow
Mouthful between inlet and outlet, the sewage draining exit is located at the lower section of overflow port, and the sewage draining exit and overflow port are and chamber
Body connection.
Further, in the present solution, the centrifugal blower at the air outlet of tower body, centrifugal blower and tower body into
Air port connection.
Further, in the present solution, the spray head is located at the top of heat exchange coil and filler assembly, and heat exchange coil with fill out
Material component is located on the path of tower body inner air flow.
The invention has the benefit that
1. not contacting directly with air by the recirculated cooling water of setting, and heat is first transmitted to by spray by heat exchange coil
Water, shower water are directly contacted with air again, by the evaporation of shower water and with the heat transfer of air, finally transfer heat to atmosphere
Cooling device, while cooperate the air of circulation, shower water and manage in recirculated water heat exchange guarantee cooling effect, can be realized
It is quickly cooling to reduce the cooling time, improve cooling efficiency.
2. centrifugal fan is used by the present invention being arranged, because centrifugal fan can eliminate Outer Tube system bring
Static pressure, thus blast-type cooling tower can be installed on the environment such as interior, such as ventilating duct, melt pit or the occasion for being unfavorable for ventilation.This hair
It is bright using centrifugal fan installation air outlet at, when normal operation, form lower negative pressuren zone in tower body, be conducive to filler surface
The evaporation and heat transfer of moisture film improve heat transference efficiency.
3. the present invention can guarantee water quality not since recirculated water is closed cycle in pipe using closed design is flow over
It is contaminated, the efficient operation of main equipment is protected well, improves service life.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of centrifugal exhausting crossing current closed cooling tower proposed by the present invention；
Fig. 2 is the heat exchange coil structural schematic diagram of centrifugal exhausting crossing current closed cooling tower proposed by the present invention；
Fig. 3 is that the heat exchange coil of centrifugal exhausting crossing current closed cooling tower proposed by the present invention shows with filler assembly structure
It is intended to；
Fig. 4 is the filler assembly schematic cross-sectional view of centrifugal exhausting crossing current closed cooling tower proposed by the present invention.
In figure: 1 cooling tower tower body, 2 centrifugal blowers, 3 motors, 4 feeding spraying pumps, 5 second conduits, 6 heat exchange coils, 7 fillers
Component, 8 maintenance doors, 9 water inlets, 10 sewage draining exits, 11 overflow ports, 12 water outlets, 13 water inlet pipes, 14 outlet pipes, 15 air inlets, 16
Air outlet, 17 spray heads, 18 first conduits, 19 bridge pieces, 20 flanges, 21 cavitys, 22 pedestals, 23 aqueducts, 24 mounting bases, 25
Primary strainer, 26 active carbon fillers, 27 grade strainers.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that it can be directly on another component when component is referred to as " being fixed on " another component
Or there may also be components placed in the middle.When a component is considered as " connection " another component, it, which can be, is directly connected to
To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being set to " another component, it
It can be and be set up directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical
", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Please referring also to Fig. 1 to Fig. 4, centrifugal exhausting are flow over closed cooling tower, including pedestal 22 and tower body 1, tower body 1
Positioned at the top of pedestal 22, tower body 1 includes air inlet 15 and air outlet 16, and air inlet 15 and air outlet 16 are located at tower body 1
Two sides, tower body 1 is internally provided with heat exchange coil 6, filler assembly 7 is provided between heat exchange coil 6, filler assembly includes
Primary strainer 25, active carbon filler 26 and secondary strainer 27, active carbon filler 26 be located at primary strainer 25 and secondary strainer 27 it
Between, primary strainer 25 is located at the top of secondary strainer 27, and the side of tower body 1 is provided with centrifugal blower 2, the inside of centrifugal blower 2
It is provided with motor 3, motor 3 is the power assembly of centrifugal blower 2, and cold dry air is pumped into tower body 1 from air inlet 15 by centrifugal blower 2
Interior, cold dry air stream enters can flow to again air outlet 16 after heat exchange coil 6 and filler assembly 7 in tower body 1, cold dry air warp
When crossing heat exchange coil 6 and filler assembly 7, heat exchange, cold dry air can be carried out with the moisture film on heat exchange coil 6 and filler assembly 7
Become damp-heat air after cooling down with moisture film heat exchange to hot water and leave heat exchange coil 6 and filler assembly 7, the water after cooling from
Filler assembly 7 is pooled on 1 bottom of tower body, is discharged by the water outlet 12 of 1 bottom of tower body, and a side position of tower body 1 is provided with installation
Seat 24, the top of mounting base 24 have been bolted feeding spraying pump 4, one end of the water inlet of feeding spraying pump 4 and water outlet
One end is respectively arranged with aqueduct 23 and bridge piece 19, and bridge piece 19 is provided with far from one end of 4 water outlet of feeding spraying pump
Flange 20, the side inner wall of tower body 1 are provided with the first conduit 18, and bridge piece 19 is connect by flange 20 with the first conduit 18,
Top position inside tower body 1 is provided with the second conduit 5, and the bottom of the second conduit 5 is provided with the spray head 17 equidistantly distributed, leads to
Cross the air, shower water and the heat exchange guarantee cooling effect for managing interior recirculated water of circulation.
Further, in the present solution, the side of tower body 1 is provided with maintenance door 8, maintenance can be passed through in cooling tower when inspection
Door 8 enters in tower.
Further, in the present solution, pedestal 22 is internally provided with cavity 21, one end of aqueduct 23 is plugged on cavity 21
Inside.
Further, in the present solution, the side outer wall of pedestal 22 is provided with water inlet 9 and water outlet 12, water inlet 9 it is interior
Portion is fixedly installed with water inlet pipe 13, and one end of water inlet pipe 13 and one end of heat exchange coil 6 are welded, the fixed peace in the inside of water outlet 12
Equipped with outlet pipe 14, the other end of outlet pipe 14 is connect with the other end of heat exchange coil 6.
Further, in the present solution, the side of pedestal 22 is provided with sewage draining exit 10 and overflow port 11, sewage draining exit 10 and overflow
For mouth 11 between water inlet 9 and water outlet 12, sewage draining exit 10 is located at the lower section of overflow port 11, and sewage draining exit 10 and overflow port 11 are equal
Be connected to cavity 21, tower body clean when, can by sewage draining exit 10 be discharged sewage, when chassis water be more than overflow port 11 when, water from overflow
Head piece 11 is discharged, and circulating hot water enters heat exchange coil 6 from water inlet 9 in system, and the spray cold water at cooling tower bottom passes through shower water
Pump 4 is extracted on spray head 17, and spray head 17 is towards 7 spraying cold water of filler assembly.
Further, in the present solution, centrifugal blower 2 at the air outlet 16 of tower body 1, centrifugal blower 2 and tower body 1
Air inlet 15 is connected to, and when centrifugal blower 2 operates normally, is made in tower body 1 in negative pressure state.
Further, in the present solution, spray head 17 is located at the top of heat exchange coil 6 and filler assembly 7, and heat exchange coil 6 with
Filler assembly 7 is located on the path of 1 inner air flow of tower body, and sprinkling is formed between spray head 17 and heat exchange coil 6 and filler assembly 7
Area, the damp-heat air come out from filler assembly 7 are extracted out outside tower by centrifugal fan 2 from air outlet 16.
Working principle: in use, from water inlet 15 into heat exchange coil 6, the low basin of cooling tower sprays circulating hot water in system
Cold water is extracted into the second conduit 5 on spray head 17 by feeding spraying pump 4, and spray head 17 is towards 7 spraying cold water of filler assembly, and hot water is along heat exchange
Coil pipe 6 and 7 surface of filler assembly form moisture film on surface to flowing down；Motor 3 drives centrifugal blower 2, and centrifugal blower 2 will be done
Cold air is pumped into tower body 1 from air inlet 15, and cold dry air stream enters in tower body 1 can be after heat exchange coil 6 and filler assembly 4
Flow to air outlet 16 again, when cold dry air passes through heat exchange coil 6 and filler assembly 7, can on heat exchange coil 6 and filler assembly 7
Moisture film carry out heat exchange, cold dry air and moisture film heat exchange become damp-heat air after cooling down to hot water and leave heat exchange coil
6 and filler assembly 7, the water after cooling be pooled on 1 bottom of tower body from filler assembly 7, be discharged by the water outlet 12 of 1 bottom of tower body.
The damp-heat air come out from filler assembly 7 is extracted out outside tower by centrifugal fan 2 from air outlet 16.Inspection Shi Ketong in cooling tower
It crosses maintenance door 8 to enter in tower, when tower body cleans, sewage can be discharged by sewage draining exit 10, when chassis water is more than overflow port 11, water
It is discharged from overflow port 11.
When normal operation, recirculated cooling water does not contact directly with air, and heat is first transmitted to spray by heat exchange coil 6
Water, shower water are directly contacted with air again, by the evaporation of shower water and with the heat transfer of air, finally transfer heat to atmosphere
Cooling device.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
- The closed cooling tower 1. centrifugal exhausting is flow over, including pedestal (22) and tower body (1), which is characterized in that the tower body (1) Positioned at the top of pedestal (22), the tower body (1) includes air inlet (15) and air outlet (16), the air inlet (15) and outlet air Mouth (16) is located at the two sides of tower body (1), and the tower body (1) is internally provided with heat exchange coil (6), the heat exchange coil (6) it is provided between filler assembly (7), the filler assembly includes primary strainer (25), active carbon filler (26) and secondary Strainer (27), the active carbon filler (26) are located between primary strainer (25) and secondary strainer (27), the primary strainer (25) it is located at the top of secondary strainer (27), the side of the tower body (1) is provided with centrifugal blower (2), the centrifugal blower (2) Be internally provided with motor (3), a side position of the tower body (1) is provided with mounting base (24), the mounting base (24) it is upper Side has been bolted feeding spraying pump (4), and one end of water inlet and one end of water outlet of the feeding spraying pump (4) are set respectively It is equipped with aqueduct (23) and bridge piece (19), the bridge piece (19) is arranged far from one end of feeding spraying pump (4) water outlet Have flange (20), the side inner wall of the tower body (1) is provided with the first conduit (18), and the bridge piece (19) passes through flange (20) it is connect with the first conduit (18), the internal top position of the tower body (1) is provided with the second conduit (5), and described second leads The bottom of pipe (5) is provided with the spray head (17) equidistantly distributed, described.
- The closed cooling tower 2. centrifugal exhausting according to claim 1 is flow over, which is characterized in that the tower body (1) Side is provided with maintenance door (8).
- The closed cooling tower 3. centrifugal exhausting according to claim 1 is flow over, which is characterized in that the pedestal (22) It is internally provided with cavity (21), one end of the aqueduct (23) is plugged on the inside of cavity (21).
- The closed cooling tower 4. centrifugal exhausting according to claim 1 is flow over, which is characterized in that the pedestal (22) Side outer wall is provided with water inlet (9) and water outlet (12), and the inside of the water inlet (9) is fixedly installed with water inlet pipe (13), One end of the water inlet pipe (13) and the one end of heat exchange coil (6) are welded, and the inside of the water outlet (12) is fixedly installed with out The other end of water pipe (14), the outlet pipe (14) is connect with the other end of heat exchange coil (6).
- The closed cooling tower 5. centrifugal exhausting according to claim 1 is flow over, which is characterized in that the pedestal (22) Side is provided with sewage draining exit (10) and overflow port (11), and the sewage draining exit (10) and overflow port (11) are located at water inlet (9) and go out Between the mouth of a river (12), the sewage draining exit (10) is located at the lower section of overflow port (11), and the sewage draining exit (10) and overflow port (11) are equal It is connected to cavity (21).
- The closed cooling tower 6. centrifugal exhausting according to claim 1 is flow over, which is characterized in that the centrifugal blower (2) at the air outlet (16) of tower body (1), centrifugal blower (2) is connected to the air inlet (15) of tower body (1).
- The closed cooling tower 7. centrifugal exhausting according to claim 1 is flow over, which is characterized in that spray head (17) position In the top of heat exchange coil (6) and filler assembly (7), and heat exchange coil (6) and filler assembly (7) are located at tower body (1) interior air On the path of circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910470620.4A CN110081735A (en) | 2019-05-31 | 2019-05-31 | Centrifugal exhausting crossing current closed cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910470620.4A CN110081735A (en) | 2019-05-31 | 2019-05-31 | Centrifugal exhausting crossing current closed cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110081735A true CN110081735A (en) | 2019-08-02 |
Family
ID=67422970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910470620.4A Withdrawn CN110081735A (en) | 2019-05-31 | 2019-05-31 | Centrifugal exhausting crossing current closed cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110081735A (en) |
-
2019
- 2019-05-31 CN CN201910470620.4A patent/CN110081735A/en not_active Withdrawn
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190802 |
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| WW01 | Invention patent application withdrawn after publication |