CN107289029A - A kind of high temperature pump bearing box with augmentation of heat transfer structure - Google Patents
A kind of high temperature pump bearing box with augmentation of heat transfer structure Download PDFInfo
- Publication number
- CN107289029A CN107289029A CN201710609275.9A CN201710609275A CN107289029A CN 107289029 A CN107289029 A CN 107289029A CN 201710609275 A CN201710609275 A CN 201710609275A CN 107289029 A CN107289029 A CN 107289029A
- Authority
- CN
- China
- Prior art keywords
- bearing
- bearing housing
- heat transfer
- augmentation
- groove
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C37/00—Cooling of bearings
- F16C37/007—Cooling of bearings of rolling bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/40—Application independent of particular apparatuses related to environment, i.e. operating conditions
- F16C2300/54—Application independent of particular apparatuses related to environment, i.e. operating conditions high-temperature
Abstract
The present invention provides a kind of high temperature pump bearing box with augmentation of heat transfer structure, including bearing housing, groove, bearing, cavity, corrugated radiating fin, pump main shaft and bearing box cover；Cavity is provided with the bearing housing, the pump main shaft passes through cavity and two ends are fixed on bearing housing by bearing；The bearing box cover is separately mounted to the both sides of bearing housing；The internal face of the bearing housing sets some grooves, and bearing housing outside wall surface sets some corrugated radiating fins.High-temperature pump is operationally, lubricating oil absorbs the heat of bearing, bearing housing is by groove and corrugated fin collective effect by the heat transfer of lubricating oil in the higher case of temperature to air outside case, so high-temperature medium passes to the heat of bearing and the heat of bearing self friction generation can be obtained by good release, it effectively prevent the phenomenon of Bearing Temperature, it is to avoid influence is produced on bearing life.The present invention can be used for transforming existing high-temperature pump, so as to realize the air cooling of high-temperature pump.
Description
Technical field
The present invention relates to applied to metallurgy, electric power, petrochemical industry, residual heat and energy utilize system in pipeline or loop in,
Convey the bearing housing structure in the pump of high-temp liquid medium, and in particular to a kind of high temperature pump bearing with augmentation of heat transfer structure
Case.
Background technology
High-temperature pump is the new pump using the contactless transmission moment of torsion of permanent magnet clutch operation principle, outside prime mover drives
During magnetic steel rotor, interior magnetic steel rotor synchronous rotary is driven by the effect in magnetic field, and interior magnetic steel rotor and impeller are connected, from
And reach the purpose of contactless impeller rotation.It is closed in due to liquid in static separation sleeve, so high-temperature pump is one
Totally-enclosed, No leakage pump-type is planted, therefore has prevented the disadvantage of the inevitable run, drip, leak of centrifugal pump with mechanical seal completely
Disease.The flow passage components of high-temperature pump are made of stainless steel (304,316L), are widely used in oil, chemical industry, pharmacy, plating, ring
The departments such as guarantor, water process, national defence, are inflammable, explosive, poisonous and precious liquid the ideal equipments of conveying, are to create No leakage, nothing
The optimal selection in the civilized workshop of pollution.
It may require that in the fields such as metallurgy, power station, chemical industry, residual heat and energy and use water pump for pipeline in system or close back
The cooling of road high temperature medium.
Conventional pumps do not have cooling device, its mechanical seal and bearing can not bear high-temperature medium and can not longtime running, because
This conventional pumps can not meet the use condition of conveying high-temp liquid system at all.
Although having been achieved for certain progress in bearing temperature control aspect at present, bearing operating temperatures still need to otherwise
It is disconnected to improve, increase bearing life this task by improving bearing operating temperatures and still exist.Existing patent CN
101713419A, device ring oiler and groove in bearing housing, this technology further groove mainly plays guide functions, moreover, it is contemplated that arriving
The normal operation ring oiler of bearing can not be too big, and this, which is also resulted in, can only have a small amount of oil to be tossed, so cooling effect is just not
Meeting is it is obvious that in addition, the huge pressure that ring oiler is born is likely to make its easily deformation, and because ring oiler is in bearing housing
So it is also a problem to change.
The content of the invention
The purpose of the present invention is to provide a kind of high temperature pump bearing box with augmentation of heat transfer structure, bearing regarding to the issue above
Chamber interior wall face processes physical dimension identical rectangle groove, strengthens the heat transfer of fluid in bearing housing and bearing housing, bearing box outer wall
Corrugated radiating fin is installed in face, and the higher bearing of temperature and lubricating oil are transferred into the heat transmission of bearing housing to outside bearing housing
In air.Operationally, lubricating oil absorbs the heat of bearing to high-temperature pump, and bearing housing passes through groove and corrugated fin collective effect
By the heat transfer of lubricating oil in the higher case of temperature to air outside case, such high-temperature medium passes to the heat and axle of bearing
The heat for holding self friction generation can be obtained by good release, effectively prevent the phenomenon of Bearing Temperature, it is to avoid
Influence is produced on bearing life.The present invention can be used for transforming existing high-temperature pump, so as to realize the sky of high-temperature pump
It is cold.The bearing housing increases the heat-transfer surface of surfaces externally and internally in guarantee high-temperature pump on the premise of the objective condition such as pump shaft rotating speed are not changed
Product, intensified bearing case and internal lubrication oil and the heat transfer with extraneous air, so as to reduce bearing operating temperatures.
The technical scheme is that：A kind of high temperature pump bearing box with augmentation of heat transfer structure, including bearing housing, ditch
Groove, bearing, cavity, corrugated radiating fin, pump main shaft and bearing box cover；
Cavity is provided with the bearing housing, the pump main shaft passes through cavity and two ends are fixed on bearing housing by bearing；
The bearing box cover is separately mounted to the both sides of bearing housing；Fluid media (medium) of the injection with lubrication in the cavity, such as moistens
Lubricating oil, the bearing is immersed in fluid media (medium)；
The internal face of the bearing housing is uniformly arranged some grooves, and bearing housing outside wall surface is uniformly arranged some corrugated radiatings
Fin.The higher lubricating oil of temperature is closed by the bearing housing, and the internal face of bearing housing sets groove, first works as high-temperature pump
To be formed swirl flow enhancing disturbance during work in groove so as to augmentation of heat transfer, second increase internal face heat exchange area, bearing
It is immersed in lubricating oil, bearing housing outside wall surface sets corrugated radiating fin, to increase outside wall surface heat exchange area so as to augmentation of heat transfer.
In such scheme, the external diameter of the corrugated radiating fin is the outer diameter D of 1.5~2.5 times of bearing housingo, thickness
For the outer diameter D of 0.075~0.125 times of bearing housingo。
Further, the external diameter of the corrugated radiating fin is the outer diameter D of 2 times of bearing housingo, thickness is 0.1 times
The outer diameter D of bearing housingo。
Further, the number of the corrugated radiating fin is 20.
In such scheme, some grooves are size identical rectangle.
Further, the depth of the groove is 0.075* (D0- D)~0.15 (D0- D), width is 0.1* (D0- D)~
0.2(D0- D), DoFor the external diameter of bearing housing, D is the internal diameter of bearing housing.
Further, the depth of the groove is 0.075* (D0- D), width is 0.1* (D0- D), the deep width of the groove
Than for 0.75.
In such scheme, the corrugated radiating fin is integrated design with bearing housing.
The present invention is in hot water circuit pump operation, and bearing housing is static, and bearing rotates at a high speed around pump main shaft, in bearing housing
Inwall sets a number of groove, and trench interiors can form stronger swirl flow, and the flowing can play enhancing heat transfer
Effect, the fluid heat in cavity can be rapidly transferred on bearing housing, corrugated radiating fin is arranged on bearing housing
In outside wall surface, the external diameter of corrugated radiating fin is 2Do, thickness is 0.1DoWhen reach optimal heat-transfer effect.The corrugated radiates
Fin can strengthen the heat convection of bearing housing and extraneous air, and the corrugated installed by internal face groove and outside wall surface radiates
Fin bearing housing with internal lubrication oil and acted on the heat exchange of external fluid to strengthen.Hot water circulating pump operationally, lubricates
Oil absorbs the heat of bearing and transfers heat to air outside bearing housing by bearing housing, and such high-temperature medium axially passes through
Heat when pump shaft passes to heat and pump bearing itself rotation of bearing produced by friction can be obtained by good release,
Just it is not enough to the operation on bearing and produces influence.
Compared with prior art, the beneficial effects of the invention are as follows：
1. bearing housing outside wall surface of the present invention sets corrugated radiating fin, to increase outside wall surface heat exchange area so as to strengthen biography
Heat.
2. it is heat conduction reinforced so as to cause to form swirl flow enhancing disturbance during high temperature pump work of the present invention in groove.Moistened
All grooves directly contacted therewith of lubricating oil covering will greatly increase the heat transfer area of lubricating oil and bearing housing so as to strengthen
Heat transfer.
Radiator heat-dissipation effect preferably, can reach and add when 3. the quantity of corrugated radiating fin of the present invention is 20
The effect of strong bearing housing and the heat convection of surrounding air.
Heat-transfer effect is optimal when 4. the depth-to-width ratio of groove of the present invention is 0.75.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the schematic diagram of middle (center) bearing box structure of the present invention.
In figure, 1. bearing housings；2. groove；3. bearing；4. cavity；5. corrugated radiating fin；6. pump main shaft；7. bearing housing
Lid.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description, but protection scope of the present invention
It is not limited to this.
Fig. 1 show a kind of embodiment of the high temperature pump bearing box of the present invention with augmentation of heat transfer structure, described
High temperature pump bearing box with augmentation of heat transfer structure include bearing housing 1, groove 2, bearing 3, cavity 4, corrugated radiating fin 5,
Pump main shaft 6 and bearing box cover 7；Cavity 4 is provided with the bearing housing 1, the pump main shaft 6 is through cavity 4 and two ends pass through bearing
3 are fixed on bearing housing 1；The bearing box cover 7 is separately mounted to the both sides of bearing housing 1.
As shown in Fig. 2 the internal face of the bearing housing 1 sets some grooves 2, the outside wall surface of bearing housing 1 sets some ripples
Shape radiating fin 5.The higher lubricating oil of temperature is closed by injection lubricating oil in the cavity 4, bearing housing 1, bearing housing 1
Internal face sets groove 2, first to be formed swirl flow enhancing disturbance when hot water pump work in groove so as to augmentation of heat transfer,
Second internal face heat exchange area is increased.
Some grooves 2 are evenly arranged in the internal face of bearing housing 1.The groove 2 is size identical rectangle.It is described
The depth of groove 2 is 0.075* (Do- D)~0.15 (D0- D), width is 0.1* (Do- D)~0.2 (D0- D), DoFor bearing housing 1
External diameter, D is the internal diameter of bearing housing 1, and the depth-to-width ratio of the groove 2 is 0.375~1.5.Preferably, the depth of the groove 2 is
0.075*(Do- D), width is 0.1* (Do- D), DoFor the external diameter of bearing housing 1, D is the internal diameter of bearing housing 1, the depth of the groove 2
It is wide than for 0.75 when heat-transfer effect it is optimal.
Outside wall surface of the uniform fixed and arranged of some corrugated radiating fins 5 in bearing housing 1.It is preferred that, the ripple
Shape radiating fin is integrated design with bearing housing 1.The external diameter of the corrugated radiating fin 5 is 1.5~2.5 times of bearing housing 1
Outer diameter Do, thickness is the outer diameter D of 0.075~0.125 times of bearing housing 1o.Preferably, the corrugated radiating fin 5 is outer
Footpath is the outer diameter D of 2 times of bearing housing 1o, thickness is the outer diameter D of 0.1 times of bearing housing 1o.Of the corrugated radiating fin 5
Radiator heat-dissipation effect preferably, can reach the effect for the heat convection for strengthening bearing housing and surrounding air when number is 20.
The use process of the present invention：
When pump main shaft 6 rotates at a high speed, bearing housing 1 is static, and bearing 3 rotates at a high speed around pump main shaft 6, in bearing housing 1
Inwall sets a number of groove 2, and the inside of groove 2 can form stronger swirl flow, and the flowing can play enhancing and pass
Fluid heat in cavity 4, can be rapidly transferred on bearing housing 1, the ripple in the outside wall surface of bearing housing 1 by the effect of heat
Line shape radiating fin 5 can strengthen the heat convection of bearing housing 1 and extraneous air, internal face groove 2 and corrugated radiating fin 5
Collective effect increase bearing 3 is transferred to the heat of the outer air of bearing housing 1 by lubricating oil and bearing housing 1, and pump main shaft 6 passes through bearing
The part of case 1 is longer than the axle of common high-temperature pump, which further increases the area of dissipation of bearing housing 1, enhances the work(of radiating
Energy.Bearing housing 1 of the present invention effectively discharges the heat that high-temperature medium passes to bearing by main shaft 6, the internal face of bearing housing 1
The corrugated radiating fin 5 that the structure of groove 2 and outside wall surface of setting are installed can be quickly by the heat of the higher bearing 3 of temperature
Transmitted to surrounding environment, so as to ensure that the long-time steady operation of bearing 3, realize the operation of high-temperature pump steadily in the long term.
The a series of detailed description of those listed above illustrating only for the possible embodiments of the present invention,
They simultaneously are not used to limit the scope of the invention, all equivalent embodiments made without departing from skill spirit of the present invention or change
It should be included in the scope of the protection.
Claims (8)
1. a kind of high temperature pump bearing box with augmentation of heat transfer structure, it is characterised in that including bearing housing (1), groove (2), axle
Hold (3), cavity (4), corrugated radiating fin (5), pump main shaft (6) and bearing box cover (7)；
Cavity (4) is provided with the bearing housing (1), the pump main shaft (6) is through cavity (4) and two ends are fixed by bearing (3)
On bearing housing (1)；The bearing box cover (7) is separately mounted to the both sides of bearing housing (1)；Injection has in the cavity (4)
The fluid media (medium) of lubrication, the bearing (3) is immersed in fluid media (medium)；
The internal face of the bearing housing (1) is uniformly arranged some grooves (2), and bearing housing (1) outside wall surface is uniformly arranged some ripples
Shape radiating fin (5).
2. a kind of high temperature pump bearing box with augmentation of heat transfer structure according to claim 1, it is characterised in that the ripple
The external diameter of line shape radiating fin (5) is the outer diameter D of 1.5~2.5 times of bearing housing (1)o, thickness is 0.075~0.125 times of axle
Hold the outer diameter D of case (1)o。
3. a kind of high temperature pump bearing box with augmentation of heat transfer structure according to claim 2, it is characterised in that the ripple
The external diameter of line shape radiating fin (5) is the outer diameter D of 2 times of bearing housing (1)o, thickness is the outer diameter D of 0.1 times of bearing housing (1)o。
4. a kind of high temperature pump bearing box with augmentation of heat transfer structure according to claim 2, it is characterised in that the ripple
The number of line shape radiating fin (5) is 20.
5. a kind of high temperature pump bearing box with augmentation of heat transfer structure according to claim 1, it is characterised in that the ditch
Groove (2) is rectangle.
6. a kind of high temperature pump bearing box with augmentation of heat transfer structure according to claim 5, it is characterised in that the ditch
The depth of groove (2) is 0.075* (Do- D)~0.15 (D0- D), width is 0.1* (Do- D)~0.2 (D0- D), DoFor bearing housing (1)
External diameter, D be bearing housing (1) internal diameter.
7. a kind of high temperature pump bearing box with augmentation of heat transfer structure according to claim 6, it is characterised in that the ditch
The depth of groove (2) is 0.075* (Do- D), width is 0.1* (Do- D), the depth-to-width ratio of the groove (2) is 0.75.
8. a kind of high temperature pump bearing box with augmentation of heat transfer structure according to claim 1, it is characterised in that the ripple
Line shape radiating fin is integrated design with bearing housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609275.9A CN107289029A (en) | 2017-07-25 | 2017-07-25 | A kind of high temperature pump bearing box with augmentation of heat transfer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609275.9A CN107289029A (en) | 2017-07-25 | 2017-07-25 | A kind of high temperature pump bearing box with augmentation of heat transfer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107289029A true CN107289029A (en) | 2017-10-24 |
Family
ID=60103351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710609275.9A Pending CN107289029A (en) | 2017-07-25 | 2017-07-25 | A kind of high temperature pump bearing box with augmentation of heat transfer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107289029A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201321989Y (en) * | 2008-12-12 | 2009-10-07 | 上海凯泉泵业（集团）有限公司 | High pressure resistant, wearable and corrosion resistant high temperature pump |
| CN201747622U (en) * | 2010-07-27 | 2011-02-16 | 上海东方泵业(集团)有限公司 | High-temperature pump |
| US20110280714A1 (en) * | 2007-05-04 | 2011-11-17 | Envirotech Pumpsystems, Inc. | Two-Piece Bearing Housing For A Centrifugal Pump |
| CN202381549U (en) * | 2011-12-24 | 2012-08-15 | 河南科技大学 | Bearing pedestal used for heat dissipation of rolling bearing |
| CN102865251A (en) * | 2012-09-10 | 2013-01-09 | 江苏大学 | Suspension body of hot water circulating pump provided with groove structure on inner wall surface |
| CN204628324U (en) * | 2015-03-15 | 2015-09-09 | 武安市永盛机械泵业有限公司 | A kind of bearing support of high temperature coal-tar pump |
| CN204704142U (en) * | 2015-03-26 | 2015-10-14 | 大连罗斯泵业有限公司 | A kind of high temperature pump axial displacement compensator |
-
2017
- 2017-07-25 CN CN201710609275.9A patent/CN107289029A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110280714A1 (en) * | 2007-05-04 | 2011-11-17 | Envirotech Pumpsystems, Inc. | Two-Piece Bearing Housing For A Centrifugal Pump |
| CN201321989Y (en) * | 2008-12-12 | 2009-10-07 | 上海凯泉泵业（集团）有限公司 | High pressure resistant, wearable and corrosion resistant high temperature pump |
| CN201747622U (en) * | 2010-07-27 | 2011-02-16 | 上海东方泵业(集团)有限公司 | High-temperature pump |
| CN202381549U (en) * | 2011-12-24 | 2012-08-15 | 河南科技大学 | Bearing pedestal used for heat dissipation of rolling bearing |
| CN102865251A (en) * | 2012-09-10 | 2013-01-09 | 江苏大学 | Suspension body of hot water circulating pump provided with groove structure on inner wall surface |
| CN204628324U (en) * | 2015-03-15 | 2015-09-09 | 武安市永盛机械泵业有限公司 | A kind of bearing support of high temperature coal-tar pump |
| CN204704142U (en) * | 2015-03-26 | 2015-10-14 | 大连罗斯泵业有限公司 | A kind of high temperature pump axial displacement compensator |
Non-Patent Citations (1)
| Title |
|---|
| 朱鹣等: "沟槽深宽比对泰勒涡流影响的研究", 《工程热物理学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102678767B (en) | Radiating method for rolling bearing | |
| CN103629118B (en) | A kind of riser permanent magnet shield pump | |
| CN1989679A (en) | Dynamoelectric machine with embedded heat exchanger | |
| CN206159049U (en) | Split type high temperature magnetic transmission petrochemical industry process pump | |
| CN102865251B (en) | Suspension body of hot water circulating pump provided with groove structure on inner wall surface | |
| CN104863902A (en) | Pump shaft oil temperature cooling device | |
| CN102624121A (en) | Cooling structure for motor winding end part | |
| CN108953146A (en) | A kind of lobe pump of circulation oil-cooling | |
| CN202165273U (en) | Centrifugal pump and heat exchange system | |
| CN215762282U (en) | High-temperature magnetic pump | |
| US20100154772A1 (en) | Fluid Charged Rotary Heating System | |
| CN107654381B (en) | From cooling vacuum pump system | |
| CN202280628U (en) | Magnetic pump | |
| CN106122037B (en) | A kind of cooling device of high-temperature pump suspension body | |
| CN107289029A (en) | A kind of high temperature pump bearing box with augmentation of heat transfer structure | |
| CN106567854B (en) | A kind of lubrication oil cooling structure of bearing in pump | |
| CN105386972B (en) | Screw vacuum pump of motive seal structure | |
| CN207583703U (en) | A kind of horizontal pump bearing cooling structure | |
| CN207004789U (en) | A kind of single-phase Piston Reciprocating Pump of water cooling radiating type | |
| CN202789491U (en) | Hot water circulating pump suspension body with groove structure on inner wall surface | |
| CN206571685U (en) | A kind of band is vented the Roots vaccum pump of cooling structure | |
| TWM512854U (en) | Motor shaft eccentric cooling mechanism | |
| CN103133393A (en) | Energy-saving type hot oil pump | |
| CN204327475U (en) | A kind of stainless steel pump sealing cooling water natural circulating device | |
| CN202059268U (en) | Centrifugal type heat radiation structure and motor having same |
Legal Events
| 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171024 |