CN106704618A - High-performance gate valve - Google Patents
High-performance gate valve Download PDFInfo
- Publication number
- CN106704618A CN106704618A CN201611218283.2A CN201611218283A CN106704618A CN 106704618 A CN106704618 A CN 106704618A CN 201611218283 A CN201611218283 A CN 201611218283A CN 106704618 A CN106704618 A CN 106704618A
- Authority
- CN
- China
- Prior art keywords
- flashboard
- wedge
- valve
- gate valve
- performance
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 210000003660 reticulum Anatomy 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
- F16K3/18—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
A high-performance gate valve is of a double-parallel double-gate bidirectional enforced metal sealing structure and is good in sealing performance. A valve element part of the high-performance gate valve is of a five-piece type self-disengagement structure. Gates are inwards drawn to be disengaged from a valve base sealing face through the inclination of a wedge block and a gate frame in the valve opening process, friction between the gates and the valve base sealing face is effectively avoided, and the service life of the valve is prolonged. The high-performance gate valve of the structure is extremely low in starting and closing torque and is opened and closed flexibly. The valve element guide and limit structure of the high-performance gate valve can adapt to application and installation at any position.
Description
Technical field
Present invention relates particularly to valve technology field, and in particular to a kind of high-performance gate valve.
Background technology
Valve must increase as pipeline headstock gear, sealing property, operability, cost performance to itself,
Adapt to the requirement of new technology, new situations.Because the harm caused by valve leak is extremely serious, when valve is leaked,
Easily trigger fire, blast and human casualty accident, also result in the service life reduction of equipment, the production of enterprise cannot normally enter
OK, cause unplanned stopping production accident to increase, seriously compromise the economic benefit of enterprise.At present, with Technologies in Petrochemical Industry application
Increase, and domestic valve manufacture factory self-technique strength is constantly strengthened, domestic petrochemical equipment and technical staff are for high-performance
The understanding of valve is also improved constantly, the continuous expansion of the range of application of high performance valve.Develop a kind of reliable and stable high-performance
Valve, is of great immediate significance to environmental protection, the operation of corollary equipment safe and continuous.
High performance valve common both at home and abroad is mainly soft seal flat gate valve, high-performance butterfly valve and high-performance and fixes at present
Based on ball valve.The usage cycles of soft seal flat gate valve sealing surface are shorter, easily wash away scratch by medium and granule materials, cause close
Envelope failure, and soft seal flat gate valve cost is generally higher.Butterfly plate stays in passage, flow resistance always when high-performance butterfly valve is due to unlatching
Coefficient is big, and butterfly plate is washed away by medium for a long time, influences service life.High-performance fixing ball valve processing and manufacturing difficulty is big, cost
Height, and high temperature and high pressure condition uses property not strong.Based on above-mentioned situation, exploitation high-performance gate valve can increase substantially valve seal
Reliability, it is ensured that corollary equipment safe and continuous are run.
The content of the invention
It is of the invention there is provided a kind of high-performance gate valve in order to solve the deficiencies in the prior art.
The present invention use technical solution be：A kind of high-performance gate valve, including valve body, valve rod and operating mechanism,
Described valve body is provided with bonnet, and valve seat is additionally provided with described valve body, and described valve rod front end is provided with flashboard, described valve rod
Front end be additionally provided with flashboard frame, described flashboard is arranged on flashboard frame and coordinates with the activity of flashboard frame, described flashboard frame with
Wedge is additionally provided between flashboard, described wedge is provided with wedge surface, and described flashboard frame is provided with wedge surface boss, described
Wedge-shaped number of blocks is two, and respectively between wedge surface boss both sides and flashboard, described flashboard frame passes through wedge surface boss and wedge
Wedge surface activity on shape block coordinates the sealing and disengaging for driving the extrusion fit between wedge and flashboard to realize flashboard and valve seat.
Described flashboard frame includes the installation portion being connected with valve rod and the connecting portion for installing flashboard, described connecting portion
Horizontal through hole is provided with, described flashboard is provided with mounting post, gap coordinates between described mounting post and through hole.
There is abrasion stroke between the outer surface of described mounting post and the inner surface of through hole.
Described wedge includes the installed part of upper end, and described wedge surface is located on installed part, in the middle of described installed part
Mounting groove is provided with, described installed part is coordinated by mounting groove with connecting portion gap.
The bottom of described wedge is additionally provided with limiting section, described limiting section and the spacing cooperation in flashboard bottom.
Back-moving spring is additionally provided between the connecting portion and the lower surface of mounting groove of described gap cooperation.
The upper end of described valve body is the accommodating chamber for accommodating the flashboard opened, and is provided with vertical for flashboard in described accommodating chamber
The guiding rib of sliding.
Limiting plate is additionally provided between described valve rod and flashboard frame, described limiting plate is arranged on the installation portion of flashboard frame
On.
Pressure relief device is additionally provided with described flashboard, pressure chamber is formed between described flashboard and wedge, described lets out
Pressure device insertion flashboard connects pressure chamber with flashboard outside.
Described flashboard is provided with installation cavity, and described pressure relief device is arranged in installation cavity, described pressure relief device bag
The pressure release flap of unidirectional unlatching is included, described pressure release flap bottom is additionally provided with spring.
The beneficial effects of the invention are as follows：The invention provides a kind of high-performance gate valve, using double parallel double disc bidirectional strength
Shape metallic leak-proof structure processed, good airproof performance, high-performance gate valve valve core part uses five chips lock from during detaching structure, valve opening
Plate inwardly draws disengaging sealing surface of seat in by wedge with the gradient of flashboard frame, effectively avoids flashboard and sealing surface of seat
Friction extend the service life of valve, and the structure hoisting capacity moment pole is low, and switch is flexible, high-performance gate valve valve of the invention
Core is oriented to and position limiting structure can adapt to installing and using for any position.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is valve core structure exploded perspective view of the present invention.
Fig. 3 is valve closing snap action schematic diagram of the present invention.
Fig. 4 is valve opening snap action schematic diagram of the present invention.
Fig. 5 is pressure relief device schematic enlarged-scale view of the present invention.
1- valve bodies in figure, 2- valve rods, 3- operating mechanisms, 4- flashboards, 5- flashboard framves, 6- wedges, 7- abrasion strokes, 8- limits
Position plate, 9- pressure relief devices, 11- bonnets, 12- valve seats, 13- guiding ribs, 51- wedge surface boss, 52- installation portions, 53- connecting portions, 54-
Through hole, 61- wedge surfaces, 62- mounting grooves, 63- limiting sections, 64- back-moving springs, 91- pressure chambers, 92- pressure release flaps.
Specific embodiment
The present invention is further described in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, a kind of high-performance gate valve, including valve
Body 1, valve rod 2 and operating mechanism 3, described valve body 1 are provided with bonnet 11, and valve seat 12 is additionally provided with described valve body 1, described
The front end of valve rod 2 be provided with flashboard 4, the front end of described valve rod 2 is additionally provided with flashboard frame 5, and described flashboard 4 is arranged on flashboard frame 5
Above and with the activity of flashboard frame 5 coordinate, wedge 6 is additionally provided between described flashboard frame 5 and flashboard 4, set on described wedge 6
There is wedge surface 61, described flashboard frame 5 is provided with wedge surface boss 51, and the described quantity of wedge 6 is two, convex positioned at wedge surface respectively
Between the both sides of platform 51 and flashboard 4, described flashboard frame 5 is by the activity mating band of wedge surface 61 on wedge surface boss 51 and wedge 6
The sealing and disengaging of flashboard 4 and valve seat 12 are realized in dynamic extrusion fit between wedge 6 and flashboard 4.
Described flashboard frame 5 includes the installation portion 52 being connected with valve rod 2 and the connecting portion 53 for installing flashboard 4, described
Valve rod 2 and flashboard frame 5 between be additionally provided with limiting plate 8, described limiting plate 8 is arranged on the installation portion 52 of flashboard frame 5.It is described
Connecting portion 53 be provided with horizontal through hole 54, described flashboard 4 is provided with mounting post 41, described mounting post 41 and through hole 54
Between gap coordinate.There is abrasion stroke 7 between the outer surface of described mounting post 41 and the inner surface of through hole 54.Described
Back-moving spring 64 is additionally provided between the connecting portion 53 and the lower surface of mounting groove 62 of gap cooperation.
Described wedge 6 includes the installed part of upper end, and described wedge surface 61 is located on installed part, in described installed part
Between be provided with mounting groove 62, described installed part is coordinated by mounting groove 62 with the gap of connecting portion 53.The bottom of described wedge 6
Portion is additionally provided with limiting section 63, described limiting section 63 and the spacing cooperation in the bottom of flashboard 4.
The upper end of described valve body 1 is the accommodating chamber for accommodating the flashboard 4 opened, and is provided with described accommodating chamber for flashboard 4
The guiding rib 13 for sliding vertically.
Pressure relief device 9 is additionally provided with described flashboard 4, pressure chamber 91, institute are formed between described flashboard 4 and wedge 6
The connection pressure chamber 91 of 9 insertion flashboard of pressure relief device 4 stated and the outside of flashboard 4.Described flashboard 4 is provided with installation cavity, described
Pressure relief device 9 is arranged in installation cavity, and described pressure relief device 9 includes the unidirectional pressure release flap 92 opened, described relief valve
The bottom of valve 92 is additionally provided with spring.
High-performance gate valve of the present invention uses the two-way pressure shape metallic leak-proof structure of double parallel double disc, good airproof performance, valve element portion
Divide and use five chips flashboard from during detaching structure, valve opening inwardly to draw disengaging valve seat in the gradient of flashboard frame by wedge
Sealing surface, the friction for effectively avoiding flashboard and sealing surface of seat extends the service life of valve, and the structure hoisting capacity
Moment pole is low, and switch is flexible.Valve element of the present invention is oriented to and position limiting structure can adapt to installing and using for any position, such as horizontal tube
Road, vertical pipe.
Operating principle of the present invention
Executing agency's operating band ovable valve stem and flashboard frame are moved downward, and two level sides are produced by flashboard frame and wedge inclined-plane
To power flashboard is pressed into valve seat, reach the two-way forced seal of import and export.Abrasion stroke between flashboard frame and flashboard can ensure that
Valve keeps the stabilization of sealing property in long-term use.
Executing agency's operating band ovable valve stem and flashboard frame are moved upwards during valve opening, while the wedge shape in the presence of secondary spring
Block departs from flashboard frame, and flashboard inwardly draws disengaging sealing surface of seat in by wedge with the gradient of flashboard frame.This configuration switches valve
During between sealing surface and valve seat without hard friction, open and close torque light.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of high-performance gate valve, including valve body（1）, valve rod（2）And operating mechanism（3）, described valve body（1）It is provided with valve
Lid（11）, described valve body（1）Inside it is additionally provided with valve seat（12）, described valve rod（2）Front end is provided with flashboard（4）, it is characterised in that
Described valve rod（2）Front end be additionally provided with flashboard frame（5）, described flashboard（4）Installed in flashboard frame（5）It is upper and with flashboard frame
（5）Activity coordinates, described flashboard frame（5）With flashboard（4）Between be additionally provided with wedge（6）, described wedge（6）It is provided with
Wedge surface（61）, described flashboard frame（5）It is provided with wedge surface boss（51）, described wedge（6）Quantity is two, is located at respectively
Wedge surface boss（51）Both sides and flashboard（4）Between, described flashboard frame（5）By wedge surface boss（51）With wedge（6）On
Wedge surface（61）Activity coordinates drive wedge（6）With flashboard（4）Between extrusion fit realize flashboard（4）With valve seat（12）Sealing
And disengaging.
2. a kind of high-performance gate valve according to claim 1, it is characterised in that described flashboard frame（5）Including with valve rod
（2）The installation portion of connection（52）With for installing flashboard（4）Connecting portion（53）, described connecting portion（53）It is provided with horizontal
Through hole（54）, described flashboard（4）It is provided with mounting post（41）, described mounting post（41）With through hole（54）Between gap match somebody with somebody
Close.
3. a kind of high-performance gate valve according to claim 2, it is characterised in that described mounting post（41）Outer surface with
Through hole（54）Inner surface between exist abrasion stroke（7）.
4. a kind of high-performance gate valve according to claim 2, it is characterised in that described wedge（6）Including upper end
Installed part, described wedge surface（61）On installed part, mounting groove is provided with the middle of described installed part（62）, described installed part
By mounting groove（62）With connecting portion（53）Gap coordinates.
5. a kind of high-performance gate valve according to claim 1, it is characterised in that described wedge（6）Bottom also
It is provided with limiting section（63）, described limiting section（63）With flashboard（4）The spacing cooperation in bottom.
6. a kind of high-performance gate valve according to claim 4, it is characterised in that the connecting portion that described gap coordinates（53）
With mounting groove（62）Lower surface between be additionally provided with back-moving spring（64）.
7. a kind of high-performance gate valve according to claim 1, it is characterised in that described valve body（1）Upper end for accommodate
The flashboard of opening（4）Accommodating chamber, be provided with described accommodating chamber and supply flashboard（4）The guiding rib for sliding vertically（13）.
8. a kind of high-performance gate valve according to claim 2, it is characterised in that described valve rod（2）With flashboard frame（5）It
Between be additionally provided with limiting plate（8）, described limiting plate（8）Installed in flashboard frame（5）Installation portion（52）On.
9. a kind of high-performance gate valve according to claim 1, it is characterised in that described flashboard（4）On be additionally provided with pressure release
Device（9）, described flashboard（4）With wedge（6）Between form pressure chamber（91）, described pressure relief device（9）Insertion flashboard
（4）Connection pressure chamber（91）With flashboard（4）Outside.
10. a kind of high-performance gate valve according to claim 9, it is characterised in that described flashboard（4）It is provided with installation
Chamber, described pressure relief device（9）In installation cavity, described pressure relief device（9）Including the unidirectional pressure release flap opened
（92）, described pressure release flap（92）Bottom is additionally provided with spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218283.2A CN106704618B (en) | 2016-12-26 | 2016-12-26 | High-performance gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218283.2A CN106704618B (en) | 2016-12-26 | 2016-12-26 | High-performance gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106704618A true CN106704618A (en) | 2017-05-24 |
| CN106704618B CN106704618B (en) | 2023-02-14 |
Family
ID=58902694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611218283.2A Active CN106704618B (en) | 2016-12-26 | 2016-12-26 | High-performance gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106704618B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013696A (en) * | 2017-06-16 | 2017-08-04 | 洪德隆 | Without abrasion prop open type ball surface gate valve |
| CN108506509A (en) * | 2018-06-27 | 2018-09-07 | 上海阀门厂股份有限公司 | A kind of gate valve sealing structure |
| CN108591503A (en) * | 2018-05-22 | 2018-09-28 | 南通市力沛流体阀业有限公司 | A kind of Novel Brake Valve |
| CN108679250A (en) * | 2018-08-13 | 2018-10-19 | 四川苏克流体控制设备有限公司 | Five chip forced seal double-flashboard gate valves |
| CN112081937A (en) * | 2020-09-09 | 2020-12-15 | 武芳 | Gate valve |
| CN113357388A (en) * | 2021-06-24 | 2021-09-07 | 俞伟光 | Parallel double-supporting-plate gate valve |
| CN113669473A (en) * | 2021-08-04 | 2021-11-19 | 凯瑞特阀业有限公司 | High-temperature high-pressure self-sealing parallel double-gate-plate gate valve |
| CN117989370A (en) * | 2022-11-01 | 2024-05-07 | 苏州纽威阀门股份有限公司 | A valve body and flat gate valve |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102915093B1 (en) * | 2025-08-25 | 2026-01-20 | (주)사이언스프로버 | All metal gate valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2240653Y (en) * | 1995-11-01 | 1996-11-20 | 浙江保一阀门厂 | Plain plate gate valve |
| US20050224741A1 (en) * | 2004-04-02 | 2005-10-13 | Bridgeford Stanley J | Three-wedge double block isolation chamber |
| CN103836221A (en) * | 2014-02-20 | 2014-06-04 | 张周卫 | LNG brake valve |
| CN203717994U (en) * | 2013-12-26 | 2014-07-16 | 沈阳科派卡装备有限公司 | Parallel type double flashboard supporting-opening type gate valve core |
| CN203743473U (en) * | 2014-03-24 | 2014-07-30 | 挺宇集团有限公司 | Spring reset dual-acting-force parallel gate valve |
| CN203797007U (en) * | 2014-04-08 | 2014-08-27 | 凯喜姆阀门有限公司 | Gate valve with double parallel gate plates |
| CN206290739U (en) * | 2016-12-26 | 2017-06-30 | 凯喜姆阀门有限公司 | A kind of high-performance gate valve |
-
2016
- 2016-12-26 CN CN201611218283.2A patent/CN106704618B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2240653Y (en) * | 1995-11-01 | 1996-11-20 | 浙江保一阀门厂 | Plain plate gate valve |
| US20050224741A1 (en) * | 2004-04-02 | 2005-10-13 | Bridgeford Stanley J | Three-wedge double block isolation chamber |
| CN203717994U (en) * | 2013-12-26 | 2014-07-16 | 沈阳科派卡装备有限公司 | Parallel type double flashboard supporting-opening type gate valve core |
| CN103836221A (en) * | 2014-02-20 | 2014-06-04 | 张周卫 | LNG brake valve |
| CN203743473U (en) * | 2014-03-24 | 2014-07-30 | 挺宇集团有限公司 | Spring reset dual-acting-force parallel gate valve |
| CN203797007U (en) * | 2014-04-08 | 2014-08-27 | 凯喜姆阀门有限公司 | Gate valve with double parallel gate plates |
| CN206290739U (en) * | 2016-12-26 | 2017-06-30 | 凯喜姆阀门有限公司 | A kind of high-performance gate valve |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013696A (en) * | 2017-06-16 | 2017-08-04 | 洪德隆 | Without abrasion prop open type ball surface gate valve |
| CN108591503A (en) * | 2018-05-22 | 2018-09-28 | 南通市力沛流体阀业有限公司 | A kind of Novel Brake Valve |
| CN108506509A (en) * | 2018-06-27 | 2018-09-07 | 上海阀门厂股份有限公司 | A kind of gate valve sealing structure |
| CN108679250A (en) * | 2018-08-13 | 2018-10-19 | 四川苏克流体控制设备有限公司 | Five chip forced seal double-flashboard gate valves |
| CN112081937A (en) * | 2020-09-09 | 2020-12-15 | 武芳 | Gate valve |
| CN113357388A (en) * | 2021-06-24 | 2021-09-07 | 俞伟光 | Parallel double-supporting-plate gate valve |
| CN113669473A (en) * | 2021-08-04 | 2021-11-19 | 凯瑞特阀业有限公司 | High-temperature high-pressure self-sealing parallel double-gate-plate gate valve |
| CN113669473B (en) * | 2021-08-04 | 2024-04-23 | 凯瑞特阀业集团有限公司 | High-temperature high-pressure self-sealing parallel double-flashboard gate valve |
| CN117989370A (en) * | 2022-11-01 | 2024-05-07 | 苏州纽威阀门股份有限公司 | A valve body and flat gate valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106704618B (en) | 2023-02-14 |
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