CN105840502A - Screw pump direct-drive motor sealing structure - Google Patents
Screw pump direct-drive motor sealing structure Download PDFInfo
- Publication number
- CN105840502A CN105840502A CN201610379047.2A CN201610379047A CN105840502A CN 105840502 A CN105840502 A CN 105840502A CN 201610379047 A CN201610379047 A CN 201610379047A CN 105840502 A CN105840502 A CN 105840502A
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- CN
- China
- Prior art keywords
- sealing
- bearing
- ring
- pipe
- shaft coupling
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to a screw pump direct-drive motor sealing structure. The screw pump direct-drive motor sealing structure comprises a motor main body, an oil pumping rod, a central sealing pipe, a hollow main shaft, a bearing pressure seat, a coupler and a motor bottom support, wherein O-shaped sealing rings are arranged between the coupler and the bearing pressure seat, between the coupler and the hollow main shaft and between the bearing pressure seat and the hollow main shaft; a Y-shaped sealing ring is also arranged between the lower end of the bearing pressure seat and the central sealing pipe; a support sealing casing pipe is fixed on the motor bottom support; the support sealing casing pipe, the hollow main shaft and the central sealing pipe form a cavity; an oil leakage channel is also formed in the motor bottom support; oil leakage holes are also formed in the outer side of the motor bottom support. The screw pump direct-drive motor sealing structure is reasonable in layout and high in sealing performance; the crude oil pollution to the site and the equipment can be avoided; meanwhile, the time pressure for replacing sealing parts can be relieved.
Description
Technical field
The invention belongs to screw-pump oil-extraction equipment field, relate in particular to a kind of screw pump direct-drive motor sealing structure.
Background technology
At present, commonly used two kinds of Screw Pump of Oil Field ground pumping unit seals structure, a kind of packing_seal for motor bottom, another is the mode of mechanical seal of motor shaft head, the former needs often to adjust packing thrust and easily leakage of oil, the latter's sealing effectiveness is preferable, but structure is complex, slightly dealing with improperly will seal failure, and both seals once seal failure, the consequence caused is exactly that well Crude Oil drains to cause above motor environmental pollution, motor cleaning is cumbersome simultaneously there is also certain potential safety hazard, it is cleaned also have impact on production after needing to shut down.
Although having improved through scheme in recent years, such as: patent " sealing device 2012205426721 of screw pump direct-drive motor seal pipe ", " screw pump direct-drive motor shaft extending portion sealing device 2012205426717 ", " a kind of directly-driven screw pump seal combination pressure relief device 2011201296739 ", " screw pump ground driving device mechanically-sealing apparatus 200720017222X ", " sealing structure 201210160425X on a kind of vertical machine driving device for directly-driven screw pump ", " the seal structure 200720194837X on motor-direct-drive type driving unit on screw pump ", certain depth adds sealing life.
But it is consumable accessory as sealing; the when of always having seal failure; now can only view crude oil spilt just know seal failure need change; and now crude oil spills or is splashed on the ground around outer surface of motor and equipment; seriously polluted; cleaning difficulty, needs downtime impact to produce, and existing best technique does not the most solve this problem.
Summary of the invention
In order to solve above-mentioned technical problem, it is an object of the invention to provide a kind of screw pump direct-drive motor sealing structure, this sealing structure is effective, and can be prevented effectively from equipment pollution, reduces cleaning time, improves production efficiency.
To achieve these goals, present invention employs following technical scheme:
nullA kind of screw pump direct-drive motor sealing structure，Including motor body、Sucker rod、Central seal pipe、Hollow spindle、Bearing wedge、Shaft coupling and motor bottom bearing，Described sucker rod runs through motor body，Described central seal pipe box is located at the outside of sucker rod，The outside on described central seal pipe top is fixed with stationary ring also by screw，And between stationary ring and central seal pipe, it is provided with the first sealing ring，The lower section of described stationary ring is provided with rotating ring，Described stationary ring and rotating ring end face seal，The upper end of described bearing wedge is positioned at the outside of stationary ring and rotating ring，And the middle part of bearing wedge fixes with rotating ring，Described bearing wedge upper end is provided with external screw thread，Described shaft coupling inner face compression axis Pressure Block upper surface，Described hollow spindle is between shaft coupling and bearing wedge，And hollow spindle is fixed with shaft coupling by flat key，Described shaft coupling and bearing wedge、Shaft coupling and hollow spindle、It is equipped with O-ring seals between bearing wedge and hollow spindle，It is additionally provided with y-shaped ring between lower end and the central seal pipe of described bearing wedge，The lower section of described bearing wedge is provided with two sealing bearings，The Internal and external cycle sealing bearing offsets with central seal pipe and hollow spindle respectively，It is fixed with Seat Seal sleeve pipe on described motor bottom bearing，Described Seat Seal sleeve pipe、Hollow spindle and central seal pipe form cavity，It is additionally provided with leakage of oil passage inside described motor bottom bearing，Described motor bottom support outer is additionally provided with oil leaking hole，Described cavity、Leakage of oil passage and oil leaking hole are interconnected，Described Seat Seal sleeve pipe and hollow spindle、Motor bottom bearing and Seat Seal sleeve pipe、The second sealing ring it is equipped with between motor bottom bearing and central seal pipe.
Preferably: be additionally provided with the first round nut between upper end and the sucker rod of central seal pipe, described first round nut is provided with external screw thread, and central seal pipe is provided with female thread, and described first round nut is fixed by threaded engagement with central seal pipe.This structure effectively prevents central seal pipe from chewing sealing ring, and central seal pipe spindle nose can process suitable chamfering, convenient installation and protection sealing member simultaneously.
Preferably: on the central seal pipe of the bottom of described motor bottom bearing, be further fixed on the second round nut, the lower section of described second round nut is fixed with nut pressing plate.Use pressing plate is fixed, prevent because of after nut loosening leakage of oil to inside bearing.
Preferably: described y-shaped ring is by cutting off steel ring separation between two-layer, and two-layer y-shaped ring.Double-decker can improve sealing property further.
Preferably: between upper end and the sucker rod of described shaft coupling, be sequentially provided with tightening trim ring, packing_seal circle and metal gasket from top to bottom, and packing_seal circle is multiple stacking.
Preferably: the top of described shaft coupling is provided with multiple screwed hole, and the adapter atop side of being fixed with clamp, described side's clamp also fixes with sucker rod.
Preferably: the bottom of described bearing wedge is fixed with the fixing lid of sealing also by cruciform slot screw.
The present invention is furnished with extra multiple O-ring seals and y-shaped ring, openning in the middle of y-shaped ring can rise on the lower past both sides that are under pressure, thus play the effect of sealing, performance is much better than the sealings such as common reinforced seal, additionally the present invention additionally uses two sealing bearings, and one can improve the axiality of mechanical seal and main shaft, and two can play the effect of sealing, the sealing topology layout of the present invention is reasonable, and sealing property is strong.
In the motor bottom bearing of the present invention, sealing sleeve pipe is installed, bearing is machined with oil leaking hole, make to form airtight cavity between Seat Seal sleeve pipe, hollow spindle and central seal pipe, after the seal failure of spindle nose, to such an extent as to when the liquid spilt after seal fails is flowed out from the through hole of rest base by this cavity
Because bearing is fixture; therefore can collect by draining in the vessel such as bottle; so it is possible not only to avoid the crude oil pollution of scene and equipment; the time pressure changing sealing member can also be alleviated simultaneously; in short time can by utilize drain into bottle in the way of collect the crude oil spilt and motor can be properly functioning; carry out again shutting down changing after novel sealing puts in place; and common structure carries out the on-the-spot and cleaning of motor and the sealing member more renewed in time due to the seriously polluted needs of leakage of oil to outside, the most urgent on the time.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the cross-sectional view of the present invention.
Fig. 3 is that present invention oil circuit when leakage of oil moves towards schematic diagram.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, and the most same or similar label represents same or similar element or has the element of same or like function.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", on " ", D score, " front ", " afterwards ", " left ", " right ", " vertically ", " level ", " push up ", " end " " interior ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include one or more this feature.In describing the invention, except as otherwise noted, " multiple " are meant that two or more, unless otherwise clear and definite restriction.
In the present invention, unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection ", the term such as " fixing " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can include that the first and second features directly contact, it is also possible to include that the first and second features are not directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " include that fisrt feature directly over second feature and oblique upper, or is merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " include that fisrt feature immediately below second feature and obliquely downward, or is merely representative of fisrt feature level height less than second feature.
nullA kind of screw pump direct-drive motor sealing structure as shown in Figure 1-Figure 3，Including motor body、Sucker rod 1、Central seal pipe 2、Hollow spindle 3、Bearing wedge 4、Shaft coupling 5 and motor bottom bearing 6，Described sucker rod 1 runs through motor body，Described central seal pipe 2 is set in the outside of sucker rod 1，The outside on described central seal pipe 2 top is fixed with stationary ring 11 also by screw，And between stationary ring 11 and central seal pipe 2, it is provided with the first sealing ring，The lower section of described stationary ring 11 is provided with rotating ring 12，Described stationary ring 11 and rotating ring 12 end face seal，The upper end of described bearing wedge 4 is positioned at the outside of stationary ring 11 and rotating ring 12，And the middle part of bearing wedge 4 fixes with rotating ring 12，Described bearing wedge 4 upper end is provided with external screw thread，Described shaft coupling 5 is fixed by threaded engagement with bearing wedge 4，And shaft coupling 5 inner face compresses described bearing wedge 4 upper surface，Described hollow spindle 3 is between shaft coupling 5 and bearing wedge 4，And hollow spindle 3 is fixed with shaft coupling 5 by flat key 17，Described shaft coupling 5 and bearing wedge 4、Shaft coupling 5 and hollow spindle 3、O-ring seals 18 it is equipped with between bearing wedge 4 and hollow spindle 3，It is additionally provided with y-shaped ring 13 between lower end and the central seal pipe 2 of described bearing wedge 4，The lower section of described bearing wedge 4 is provided with two sealing bearings 16，The Internal and external cycle sealing bearing 16 offsets with central seal pipe 2 and hollow spindle 3 respectively，It is fixed with Seat Seal sleeve pipe 61 on described motor bottom bearing 6，Described Seat Seal sleeve pipe 61、Hollow spindle 3 and central seal pipe 2 form cavity，Described motor bottom bearing 6 is internal is additionally provided with leakage of oil passage 62，It is additionally provided with oil leaking hole 63 outside described motor bottom bearing 6，Described cavity、Leakage of oil passage 62 and oil leaking hole 63 are interconnected，Described Seat Seal sleeve pipe 61 and hollow spindle 3、Motor bottom bearing 6 and Seat Seal sleeve pipe 61、The second sealing ring 66 it is equipped with between motor bottom bearing 6 and central seal pipe 2.
Being additionally provided with the first round nut 10 between upper end and the sucker rod 1 of central seal pipe 2, described first round nut 10 is provided with external screw thread, and central seal pipe 2 is provided with female thread, and described first round nut 10 is fixed by threaded engagement with central seal pipe 2.Being further fixed on the second round nut 64 on the central seal pipe 2 of the bottom of described motor bottom bearing 6, the lower section of described second round nut 64 is fixed with nut pressing plate 65.Described y-shaped ring 13 is to be separated by partition steel ring 14 between two-layer, and two-layer y-shaped ring 13.
It is sequentially provided with tightening trim ring 7, packing_seal circle 8 and metal gasket 9 between upper end and the sucker rod 1 of described shaft coupling 5 from top to bottom, and packing_seal circle 8 is multiple stacking.The top of described shaft coupling 5 is provided with multiple screwed hole 51, and the shaft coupling 5 top side of being fixed with clamp 19, and described side's clamp 19 also fixes with sucker rod 1.The bottom of described bearing wedge 4 is fixed with the fixing lid 15 of sealing also by cruciform slot screw.
It should be pointed out that, that above example is only the representative example of the present invention.The present invention can also have many deformation.Every any simple modification, equivalent variations and modification made above example according to the essence of the present invention, is all considered as belonging to protection scope of the present invention.
Claims (7)
- null1. a screw pump direct-drive motor sealing structure，It is characterized in that: include motor body、Sucker rod (1)、Central seal pipe (2)、Hollow spindle (3)、Bearing wedge (4)、Shaft coupling (5) and motor bottom bearing (6)，Described sucker rod (1) runs through motor body，Described central seal pipe (2) is set in the outside of sucker rod (1)，The outside on described central seal pipe (2) top is fixed with stationary ring (11) also by screw，And it is provided with the first sealing ring between stationary ring (11) and central seal pipe (2)，The lower section of described stationary ring (11) is provided with rotating ring (12)，Described stationary ring (11) and rotating ring (12) end face seal，The upper end of described bearing wedge (4) is positioned at the outside of stationary ring (11) and rotating ring (12)，And the middle part of bearing wedge (4) fixes with rotating ring (12)，Described bearing wedge (4) upper end is provided with external screw thread，Described shaft coupling (5) inner face compression axis Pressure Block (4) upper surface，Described hollow spindle (3) is positioned between shaft coupling (5) and bearing wedge (4)，And hollow spindle (3) is fixed with shaft coupling (5) by flat key (17)，Described shaft coupling (5) and bearing wedge (4)、Shaft coupling (5) and hollow spindle (3)、O-ring seals (18) it is equipped with between bearing wedge (4) and hollow spindle (3)，It is additionally provided with y-shaped ring (13) between lower end and the central seal pipe (2) of described bearing wedge (4)，The lower section of described bearing wedge (4) is provided with two sealing bearings (16)，The Internal and external cycle sealing bearing (16) offsets with central seal pipe (2) and hollow spindle (3) respectively，It is fixed with Seat Seal sleeve pipe (61) on described motor bottom bearing (6)，Described Seat Seal sleeve pipe (61)、Hollow spindle (3) and central seal pipe (2) form cavity，Described motor bottom bearing (6) is internal is additionally provided with leakage of oil passage (62)，Described motor bottom bearing (6) outside is additionally provided with oil leaking hole (63)，Described cavity、Leakage of oil passage (62) and oil leaking hole (63) are interconnected，Described Seat Seal sleeve pipe (61) and hollow spindle (3)、Motor bottom bearing (6) and Seat Seal sleeve pipe (61)、The second sealing ring (66) it is equipped with between motor bottom bearing (6) and central seal pipe (2).
- A kind of screw pump direct-drive motor sealing structure the most according to claim 1, it is characterized in that: between upper end and the sucker rod (1) of central seal pipe (2), be additionally provided with the first round nut (10), described first round nut (10) is provided with external screw thread, central seal pipe (2) is provided with female thread, and described first round nut (10) is fixed by threaded engagement with central seal pipe (2).
- A kind of screw pump direct-drive motor sealing structure the most according to claim 1, it is characterized in that: be further fixed on the second round nut (64) on the central seal pipe (2) of the bottom of described motor bottom bearing (6), the lower section of described second round nut (64) is fixed with nut pressing plate (65).
- A kind of screw pump direct-drive motor sealing structure the most according to claim 1, it is characterised in that: described y-shaped ring (13) is two-layer, and by cutting off steel ring (14) separation between two-layer y-shaped ring (13).
- A kind of screw pump direct-drive motor sealing structure the most according to claim 1, it is characterized in that: be sequentially provided with tightening trim ring (7), packing_seal circle (8) and metal gasket (9) from top to bottom between upper end and the sucker rod (1) of described shaft coupling (5), and packing_seal circle (8) is multiple stacking.
- A kind of screw pump direct-drive motor sealing structure the most according to claim 1, it is characterized in that: the top of described shaft coupling (5) is provided with multiple screwed hole (51), and shaft coupling (5) the top side of being fixed with clamp (19), described side's clamp (19) also fixes with sucker rod (1).
- A kind of screw pump direct-drive motor sealing structure the most according to claim 1, it is characterised in that: the bottom of described bearing wedge (4) is fixed with the fixing lid (15) of sealing also by cruciform slot screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610379047.2A CN105840502A (en) | 2016-05-31 | 2016-05-31 | Screw pump direct-drive motor sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610379047.2A CN105840502A (en) | 2016-05-31 | 2016-05-31 | Screw pump direct-drive motor sealing structure |
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| Publication Number | Publication Date |
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| CN105840502A true CN105840502A (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610379047.2A Pending CN105840502A (en) | 2016-05-31 | 2016-05-31 | Screw pump direct-drive motor sealing structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086703A (en) * | 2017-06-26 | 2017-08-22 | 山西天海泵业有限公司 | Permanent-magnet water-submersible electric machine |
| CN108164131A (en) * | 2017-12-29 | 2018-06-15 | 通鼎互联信息股份有限公司 | A kind of big outer diameter of non-intervention formula fluctuates preform drawing sealing device and drawing process |
| CN109586488A (en) * | 2019-01-25 | 2019-04-05 | 宁波市贤龙汽车配件有限公司 | A kind of tarpaulin motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2180186A1 (en) * | 2007-08-20 | 2010-04-28 | Heishin Sobi Kabushiki Kaisha | Rotor drive mechanism and pump device |
| CN202673676U (en) * | 2012-05-23 | 2013-01-16 | 山东力久特种电机有限公司 | Sealing structure for vertical motor direct-drive screw pump driving device |
| CN202914309U (en) * | 2012-10-23 | 2013-05-01 | 中国石油集团渤海石油装备制造有限公司 | Sealing device for shaft extension part of direct drive motor of screw pump |
| CN204646658U (en) * | 2015-06-01 | 2015-09-16 | 大庆东达节能技术开发服务有限公司 | Screw pump sealing load carrier |
| CN205779688U (en) * | 2016-05-31 | 2016-12-07 | 浙江西传电气科技有限公司 | A kind of screw pump direct-drive motor sealing structure |
-
2016
- 2016-05-31 CN CN201610379047.2A patent/CN105840502A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2180186A1 (en) * | 2007-08-20 | 2010-04-28 | Heishin Sobi Kabushiki Kaisha | Rotor drive mechanism and pump device |
| CN202673676U (en) * | 2012-05-23 | 2013-01-16 | 山东力久特种电机有限公司 | Sealing structure for vertical motor direct-drive screw pump driving device |
| CN202914309U (en) * | 2012-10-23 | 2013-05-01 | 中国石油集团渤海石油装备制造有限公司 | Sealing device for shaft extension part of direct drive motor of screw pump |
| CN204646658U (en) * | 2015-06-01 | 2015-09-16 | 大庆东达节能技术开发服务有限公司 | Screw pump sealing load carrier |
| CN205779688U (en) * | 2016-05-31 | 2016-12-07 | 浙江西传电气科技有限公司 | A kind of screw pump direct-drive motor sealing structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086703A (en) * | 2017-06-26 | 2017-08-22 | 山西天海泵业有限公司 | Permanent-magnet water-submersible electric machine |
| CN108164131A (en) * | 2017-12-29 | 2018-06-15 | 通鼎互联信息股份有限公司 | A kind of big outer diameter of non-intervention formula fluctuates preform drawing sealing device and drawing process |
| CN108164131B (en) * | 2017-12-29 | 2023-11-03 | 通鼎互联信息股份有限公司 | Non-intervention type large-outer-diameter fluctuation optical fiber preform wire drawing sealing device and wire drawing method |
| CN109586488A (en) * | 2019-01-25 | 2019-04-05 | 宁波市贤龙汽车配件有限公司 | A kind of tarpaulin motor |
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| CB02 | Change of applicant information |
Address after: 313200 No. 137 North Road, Fuxi street, Deqing County, Huzhou, Zhejiang. Applicant after: Zhejiang westward electric Limited by Share Ltd Address before: 313200 No. 137 North Ring Road, Wu Kang Town, Deqing County, Huzhou, Zhejiang. Applicant before: Zhejiang Xichuan Electrical Technology Co., Ltd. |
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Application publication date: 20160810 |
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| RJ01 | Rejection of invention patent application after publication |