CN219712171U - Bidirectional hydraulic damping valve group - Google Patents
Bidirectional hydraulic damping valve group Download PDFInfo
- Publication number
- CN219712171U CN219712171U CN202321015468.9U CN202321015468U CN219712171U CN 219712171 U CN219712171 U CN 219712171U CN 202321015468 U CN202321015468 U CN 202321015468U CN 219712171 U CN219712171 U CN 219712171U
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- valve core
- guide sleeve
- hydraulic
- oil
- hydraulic cavity
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- 238000013016 damping Methods 0.000 title claims abstract description 50
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 15
- 239000003921 oil Substances 0.000 claims abstract description 54
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 2
- 238000010276 construction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000013461 design Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000006837 decompression Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model provides a bidirectional hydraulic damping valve group, which belongs to the technical field of dampers and comprises a fixed valve core 6, and a first guide sleeve 3 and a second guide sleeve 9 which are respectively and fixedly connected to two sides of the fixed valve core 6, wherein a plurality of damping holes are formed in the fixed valve core 6, the first guide sleeve 3 and the fixed valve core 6 form a first hydraulic cavity, the second guide sleeve 9 and the fixed valve core 6 form a second hydraulic cavity, hydraulic oil is filled in the first hydraulic cavity and the second hydraulic cavity, a plurality of oil passage channels are arranged between the first hydraulic cavity and the second hydraulic cavity, blocking parts are respectively arranged in the first hydraulic cavity and the second hydraulic cavity, and when the positive pressure difference between one side of the hydraulic cavity and the other side of the hydraulic cavity exceeds a limiting value, the blocking parts at the high pressure side can block all the oil passage channels, so that the hydraulic oil can only enter the low pressure side hydraulic cavity through the damping holes on the fixed valve core 6, and further bidirectional damping effect is realized.
Description
Technical Field
The utility model relates to the technical field of hydraulic dampers, in particular to a bidirectional hydraulic damping valve group.
Background
Various friction and other impediments to damping free vibrations are known as damping, while devices mounted on structural systems that quickly attenuate vibrations generated by an impact are known as dampers. Various dampers have long been used in the aerospace, aviation, military, firearms, automotive, and other industries to dampen vibration and dissipate energy. From the seventies of the twentieth century, people began to gradually transfer these technologies to structural engineering of buildings, bridges, railways, etc., and their development was very rapid.
The damper has various structural forms, such as a hydraulic damper, a solid viscous damper, an air damper, a friction damper and the like, wherein the hydraulic damper damps viscous fluid medium throttling through a damping valve arranged inside, has excellent inhibition effect on periodic load and impact load, and is widely applied to vibration of pipelines and equipment of nuclear power plants, thermal power plants, chemical plants, steel plants and the like, and vibration of a pipeline system for controlling impact fluid vibration and seismic disturbance. The hydraulic oil commonly used for the hydraulic damper is silicone oil, castor oil, mechanical oil, diesel oil, engine oil, transformer oil and the like. The hydraulic damper is required to inhibit abnormal vibration, swing or shaking of a pipeline or an object to be protected when the pipeline or the object to be protected bears external impact load, even part of special equipment requires the hydraulic damper to be completely rigid at the moment, and also is required to allow the position of the pipeline or the object to be protected to be moved due to allowable deformation (such as normal thermal expansion of the pipeline), so that a damping valve group in the damper is required to be capable of adaptively acting according to the external load.
The existing bidirectional damping valve generally adopts the combination of two sets of one-way valves and damping valves to realize bidirectional damping effect, and meanwhile, a plurality of damping passages are required to be arranged, so that the volume is large and the structure is complex. The Chinese patent with the document number of CN204942128U provides a bidirectional damping valve structure with a single damping passage, but the scheme still needs to realize the bidirectional damping effect by arranging two sets of damping parts at two ends of a slidable valve core, and the whole valve core continuously collides with a left valve seat and a right valve seat in the use process, so that the quick response to impact load can not be realized while the durability is low, the self-recovery of a damping passage can not be realized after the external load disappears, the slidable valve core and the left valve seat are sealed by conical surfaces, the manufacturing difficulty is high, and the cost is high.
Disclosure of Invention
The utility model aims to solve the technical problems that the existing bidirectional damping valve is large in structure volume and complex in structure, cannot realize quick response to impact load, cannot realize self-recovery of a damping channel after external load disappears, and is low in durability, high in manufacturing difficulty and high in cost.
In order to solve the technical problems, the utility model provides a bidirectional hydraulic damping valve group, which comprises a fixed valve core, and a first guide sleeve and a second guide sleeve which are respectively and fixedly connected to two sides of the fixed valve core, wherein a plurality of damping holes are formed in the fixed valve core; the second blocking component is arranged in the second hydraulic cavity, and when the positive pressure difference of the second hydraulic cavity relative to the first hydraulic cavity exceeds a limiting value, the second blocking component can seal all oil channels, so that hydraulic oil can only enter the first hydraulic cavity through the damping hole on the fixed valve core.
Furthermore, the outer sides of the first guide sleeve and the second guide sleeve are tightly sleeved with a valve sleeve, a plurality of oil through cavities are arranged between the first guide sleeve and the valve sleeve, a plurality of oil through holes corresponding to the channels are arranged on the side walls of the first guide sleeve and the second guide sleeve, and the oil through cavities and the oil through holes jointly form the oil through channels.
Furthermore, two ends of the valve sleeve are fixedly connected with guide sleeve check rings, and the guide sleeve check rings are made of steel.
Further, the first blocking component comprises a cylindrical first movable valve core with a single-side opening, a pressure reducing valve hole is formed in the closed end face of the first movable valve core, the first movable valve core is inserted into the first guide sleeve, the opening side faces the fixed valve core, the first movable valve core can slide freely under the tight fit between the outer wall of the first movable valve core and the inner wall of the first guide sleeve, when the first movable valve core is close to the fixed valve core, the oil passage can be closed, when the first movable valve core is far away from the fixed valve core, the oil passage can be dredged, a first spring is arranged between the first movable valve core and the fixed valve core, one end of the first spring is supported on the inner side of the closed end face of the first movable valve core, the other end of the first spring is supported on the side, close to the first hydraulic cavity, the first guide sleeve is fixedly connected with a first limiting sealing check ring far away from the fixed valve core, and the first movable valve core is pressed on the inner side of the first limiting sealing check ring under normal conditions, and the dredging state of the oil passage is kept;
the second blocking part comprises a cylindrical second movable valve core with an opening at one side, a pressure reducing valve hole is formed in the closed end face of the second movable valve core, the second movable valve core is inserted into the second guide sleeve, the opening side faces the fixed valve core, the second movable valve core can slide freely under the tight fit between the outer wall of the second movable valve core and the inner wall of the second guide sleeve, when the second movable valve core is close to the fixed valve core, the oil passage can be closed, when the second movable valve core is far away from the fixed valve core, the oil passage can be dredged, a second spring is arranged between the second movable valve core and the fixed valve core, one end of the second spring is supported on the inner side of the closed end face of the second movable valve core, the other end of the second spring is supported on the side, close to the fixed valve core, of the second guide sleeve is far away from the fixed valve core, a second limiting sealing check ring is fixedly connected with the second movable valve core, and the second movable valve core is pressed on the inner side of the second limiting sealing check ring in a normal state, and the dredging state of the oil passage is kept.
Furthermore, the first limiting sealing check ring and the second limiting sealing check ring are made of red copper.
Furthermore, the pressure reducing valve hole on the closed end surface of the first movable valve core and the pressure reducing valve hole on the closed end surface of the second movable valve core can be in different specifications.
Further, the first spring and the second spring adopt different mechanical performance parameters.
Furthermore, the fixed valve core is of a complete sealing structure.
Drawings
Fig. 1 is a schematic view of the internal structure of the present utility model.
The reference numerals in the figures are as follows: 1. a first limit sealing retainer ring; 2. a guide sleeve retainer ring; 3. the first guide sleeve; 4. a first movable valve core; 5. a first spring; 6. fixing the valve core; 7. a valve sleeve; 8. a second spring; 9. a second guide sleeve; 10. a second movable valve core; 11. and the second limiting sealing check ring.
Detailed Description
For better explanation of the present utility model, for easy understanding, the technical solution and effects of the present utility model will be described in detail below by way of specific embodiments with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a bidirectional hydraulic damping valve group, which comprises a fixed valve core 6, and a first guide sleeve 3 and a second guide sleeve 9 which are respectively and fixedly connected to two sides of the fixed valve core 6, wherein a plurality of damping holes are formed in the fixed valve core 6, the first guide sleeve 3 and the fixed valve core 6 form a first hydraulic cavity, the second guide sleeve 9 and the fixed valve core 6 form a second hydraulic cavity, the inside of the first hydraulic cavity and the inside of the second hydraulic cavity are filled with hydraulic oil, valve sleeves 7 are tightly sleeved on the outer sides of the first guide sleeve 3 and the second guide sleeve 9, a plurality of oil through holes are arranged between the first guide sleeve 3 and the second guide sleeve 9 and the valve sleeves 7, a plurality of oil through holes corresponding to the channels are formed in the side walls of the first guide sleeve 3 and the second guide sleeve 9, and the oil through holes jointly form a plurality of oil through channels, so that the first hydraulic cavity and the first hydraulic cavity are communicated.
Furthermore, the two ends of the valve sleeve 7 are fixedly connected with guide sleeve check rings 2, and the guide sleeve check rings 2 are made of steel. The guide sleeve retainer ring 2 can assist in fixing the first guide sleeve 3 and the second guide sleeve 9, and meanwhile, the tightness of the oil passing cavity is improved.
Further, a first blocking part is arranged in the first hydraulic cavity, the first blocking part comprises a first movable valve core 4 which is in a barrel shape with an opening at one side, a decompression valve hole is formed in the closed end face of the first movable valve core 4, the first movable valve core 4 is inserted into the first guide sleeve 3, the opening side faces the fixed valve core 6, the first movable valve core 4 can slide freely under the tight fit between the outer wall of the first movable valve core 4 and the inner wall of the first guide sleeve 3, when the first movable valve core 4 is close to the fixed valve core 6, the oil passage can be closed, when the first movable valve core 4 is far away from the fixed valve core 6, the oil passage can be dredged, a first spring 5 is arranged between the first movable valve core 4 and the fixed valve core 6, one end of the first spring 5 is supported on the inner side of the closed end face of the first movable valve core 4, the other end of the first spring 5 is supported on one side of the fixed valve core 6 close to the first hydraulic cavity, the first guide sleeve 3 is fixedly connected with a first limiting sealing retainer ring 1 far away from the fixed valve core 6, and the first movable valve core 4 is pressed on the inner side of the first limiting sealing ring 1 under normal state, and the oil passage is kept in a dredging state.
Further, a second blocking part is arranged in the second hydraulic cavity, the second blocking part comprises a barrel-shaped second movable valve core 10 with a single-side opening, a decompression valve hole is formed in the closed end face of the second movable valve core 10, the second movable valve core 10 is inserted into the second guide sleeve 9, the opening side faces the fixed valve core 6, the second movable valve core 10 can slide freely under the tight fit between the outer wall of the second movable valve core 10 and the inner wall of the second guide sleeve 9, when the second movable valve core 10 is close to the fixed valve core 6, the oil passage can be closed, when the second movable valve core 10 is far away from the fixed valve core 6, the oil passage can be dredged, a second spring 8 is arranged between the second movable valve core 10 and the fixed valve core 6, one end of the second spring 8 is supported on the inner side of the closed end face of the second movable valve core 10, the other end of the second spring 8 is supported on the side of the fixed valve core 6 close to the second hydraulic cavity, the second guide sleeve 9 is fixedly connected with a second limiting sealing retainer ring 11 far away from the fixed valve core 6, and the second movable valve core 10 is pressed on the inner side of the second limiting sealing retainer 11 under normal state, and the oil passage is kept in a dredging state.
When the hydraulic oil flow direction in the valve group is from the first hydraulic cavity to the second hydraulic cavity, the pressure in the first hydraulic cavity is increased, if the positive pressure difference of the first hydraulic cavity relative to the second hydraulic cavity is within a design allowable range value, the first movable valve core 4 is kept static under the support of the first spring 5, namely the oil passage is kept in a dredging state, and the hydraulic oil flows from the first hydraulic cavity to the second hydraulic cavity at a design allowable moving speed; if the positive pressure difference of the first hydraulic cavity relative to the second hydraulic cavity exceeds the design allowable range value, the first movable valve core 4 moves towards the fixed valve core 6 under the pushing of hydraulic oil, the oil through hole on the first guide sleeve 3 is completely blocked, and then the oil through channel is closed, at the moment, hydraulic oil can only slowly flow to the second hydraulic cavity through the damping hole on the fixed valve core 6, so that the damping effect on the direction from the first hydraulic cavity to the second hydraulic cavity is realized, and when the load born by the hydraulic oil is removed or the damping effect through the damping hole causes the pressure difference to fall into the allowable range value, the first movable valve core 4 is restored to the position of completely opening the oil through hole on the first guide sleeve 3 under the pushing of the first spring 5, so that the self-recovery of the oil through channel is realized.
Conversely, when the hydraulic oil flow direction in the valve group is from the second hydraulic cavity to the first hydraulic cavity, the pressure in the second hydraulic cavity is increased, if the positive pressure difference of the second hydraulic cavity relative to the first hydraulic cavity is within the design allowable range value, the second movable valve core 10 is kept static under the support of the second spring 8, namely the oil passage is kept in a dredging state, and the hydraulic oil flows from the second hydraulic cavity to the first hydraulic cavity at the design allowable movement speed; if the positive pressure difference of the second hydraulic cavity relative to the first hydraulic cavity exceeds the design allowable range value, the second movable valve core 10 moves towards the fixed valve core 6 under the pushing of hydraulic oil, the oil through hole on the second guide sleeve 9 is completely blocked, and then the oil through channel is closed, at the moment, hydraulic oil can only slowly flow to the first hydraulic cavity through the damping hole on the fixed valve core 6, so that the damping effect on the direction from the second hydraulic cavity to the first hydraulic cavity is realized, and when the load born by the hydraulic oil is removed or the damping effect through the damping hole causes the pressure difference to fall into the allowable range value, the second movable valve core 10 is restored to the position of completely opening the oil through hole on the second guide sleeve 9 under the pushing of the first spring 8, so that the self-recovery of the oil through channel is realized.
Furthermore, the first limiting sealing check ring 1 and the second limiting sealing check ring 11 are made of red copper.
Further, the diameter and the number of the oil through holes and the size of the ring surface of the oil through cavity are set according to the viscosity parameters of hydraulic oil and the flow speed requirements of the hydraulic oil.
Furthermore, the pressure reducing valve hole on the closed end surface of the first movable valve core 4 and the pressure reducing valve hole on the closed end surface of the second movable valve core can be in different specifications, and the first spring 5 and the second spring 8 can be in different mechanical performance parameters so as to meet the requirement of different practical allowable pressures of the bidirectional hydraulic damping valve group in different directions.
Furthermore, the fixed valve core 6 is not provided with a damping hole, a complete sealing structure is adopted, so that the requirement that the hydraulic damper is completely rigid when part of special equipment bears impact load is met, and after external load is removed, the movable valve core is restored to the position where the oil through hole is completely opened under the pushing of the spring, so that the self-restoration of the oil through channel is realized.
Meanwhile, the utility model is integrally made of metal, the movable matching surface is hardened, the wear resistance is good, the precision is high, and the service life is long; the whole set of sealing valve group acts accurately and responds rapidly; the manufacturing difficulty is low because the conical surface seal is not adopted in the manufacturing process.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions, which are defined by the scope of the appended claims.
Claims (9)
1. The two-way hydraulic damping valve group comprises a fixed valve core (6), and a first guide sleeve (3) and a second guide sleeve (9) which are respectively and fixedly connected to two sides of the fixed valve core (6), wherein a plurality of damping holes are formed in the fixed valve core (6), the two-way hydraulic damping valve group is characterized in that the first guide sleeve (3) and the fixed valve core (6) form a first hydraulic cavity, the second guide sleeve (9) and the fixed valve core (6) form a second hydraulic cavity, hydraulic oil is filled in the first hydraulic cavity and the second hydraulic cavity, a plurality of oil through channels are formed between the first hydraulic cavity and the second hydraulic cavity, a first blocking part is arranged in the first hydraulic cavity, and when the positive pressure difference of the first hydraulic cavity relative to the second hydraulic cavity exceeds a limiting value, the first blocking part can block all the oil through the damping holes in the fixed valve core (6) to enable hydraulic oil to enter the second hydraulic cavity; the second blocking part is arranged in the second hydraulic cavity, and when the positive pressure difference of the second hydraulic cavity relative to the first hydraulic cavity exceeds a limiting value, the second blocking part can seal all oil channels, so that hydraulic oil can only enter the first hydraulic cavity through the damping hole on the fixed valve core (6).
2. The bidirectional hydraulic damping valve group according to claim 1, wherein a valve sleeve (7) is tightly sleeved on the outer sides of the first guide sleeve (3) and the second guide sleeve (9), a plurality of oil through cavities are arranged between the first guide sleeve (3) and the second guide sleeve (9) and the valve sleeve (7), a plurality of oil through holes corresponding to the oil through cavities are arranged on the side walls of the first guide sleeve (3) and the second guide sleeve (9), and the oil through cavities and the oil through holes jointly form the oil through channel.
3. The two-way hydraulic damping valve group according to claim 2, wherein the two ends of the valve sleeve (7) are fixedly connected with guide sleeve check rings (2).
4. A two-way hydraulic damping valve group according to claim 3, characterized in that the guide sleeve retainer ring (2) is made of steel material.
5. The bidirectional hydraulic damping valve group according to claim 1, wherein the first blocking component comprises a first movable valve core (4) which is cylindrical and is provided with an opening at one side, a pressure reducing valve hole is arranged on a closed end surface of the first movable valve core (4), the first movable valve core (4) is inserted into the first guide sleeve (3) and the opening side faces the fixed valve core (6), the first movable valve core (4) can freely slide under the condition that the outer wall of the first movable valve core is tightly attached to the inner wall of the first guide sleeve (3), the oil passage can be closed when the first movable valve core (4) is close to the fixed valve core (6), the oil passage can be dredged when the first movable valve core (4) is far away from the fixed valve core (6), a first spring (5) is arranged between the first movable valve core (4) and the fixed valve core (6), one end of the first spring (5) is supported on the inner side of the closed end surface of the first movable valve core (4), the other end of the first spring (5) is supported on the side of the fixed valve core (6) close to the first hydraulic cavity, the first guide sleeve (3) is far away from the fixed valve core (6), the first retainer ring (1) is fixedly connected with the first retainer ring (1), and the first retainer ring (1) is kept in a normal state;
the second blocking component comprises a second movable valve core (10) which is in a barrel shape with an opening at one side, a pressure reducing valve hole is formed in the closed end face of the second movable valve core (10), the second movable valve core (10) is inserted into a second guide sleeve (9) and the opening side faces the fixed valve core (6), the second movable valve core (10) can slide freely under the tight fit of the outer wall of the second movable valve core and the inner wall of the second guide sleeve (9), when the second movable valve core (10) is close to the fixed valve core (6), the oil passage can be closed, when the second movable valve core (10) is far away from the fixed valve core (6), the oil passage can be dredged, a second spring (8) is arranged between the second movable valve core (10) and the fixed valve core (6), one end of the second spring (8) is supported on the inner side of the closed end face of the second movable valve core (10), the other end of the second spring (8) is supported on the side of the fixed valve core (6) close to the second hydraulic cavity, the second guide sleeve (9) is fixedly connected with a second limiting seal (11) far away from the fixed valve core (6), and the second limiting seal (11) is kept on the inner side of the second spring (10) in a normal state.
6. The two-way hydraulic damping valve group according to claim 5, wherein the first limit sealing collar (1) and the second limit sealing collar (11) are made of red copper material.
7. The two-way hydraulic damping valve set according to claim 5, wherein the pressure reducing valve hole on the closed end surface of the first movable valve core (4) and the pressure reducing valve hole on the closed end surface of the second movable valve core can be of different specifications.
8. A two-way hydraulic damping valve group according to claim 5, characterized in that the first spring (5) and the second spring (8) may employ different mechanical properties.
9. The two-way hydraulic damping valve set according to any one of claims 1-8, characterized in that the fixed spool (6) is of a fully sealed construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321015468.9U CN219712171U (en) | 2023-04-28 | 2023-04-28 | Bidirectional hydraulic damping valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321015468.9U CN219712171U (en) | 2023-04-28 | 2023-04-28 | Bidirectional hydraulic damping valve group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219712171U true CN219712171U (en) | 2023-09-19 |
Family
ID=87981494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321015468.9U Active CN219712171U (en) | 2023-04-28 | 2023-04-28 | Bidirectional hydraulic damping valve group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219712171U (en) |
-
2023
- 2023-04-28 CN CN202321015468.9U patent/CN219712171U/en active Active
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