CN220217380U - Anti-deformation jacking device suitable for butt welding of large-caliber thin-wall steel pipes - Google Patents
Anti-deformation jacking device suitable for butt welding of large-caliber thin-wall steel pipes Download PDFInfo
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- CN220217380U CN220217380U CN202321705379.7U CN202321705379U CN220217380U CN 220217380 U CN220217380 U CN 220217380U CN 202321705379 U CN202321705379 U CN 202321705379U CN 220217380 U CN220217380 U CN 220217380U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 59
- 239000010959 steel Substances 0.000 title claims abstract description 59
- 238000003466 welding Methods 0.000 title claims abstract description 47
- 230000005499 meniscus Effects 0.000 claims abstract description 18
- 230000002265 prevention Effects 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 239000004429 Calibre Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 13
- 238000010276 construction Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 13
- 238000001816 cooling Methods 0.000 description 10
- 238000009826 distribution Methods 0.000 description 8
- 210000001503 joint Anatomy 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005399 mechanical ventilation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The utility model belongs to the technical field of propping equipment, and particularly relates to a propping device suitable for butt welding deformation prevention of large-caliber thin-wall steel pipes; the jacking device includes: a bearing cylinder (1), a plurality of supporting screw rods (2), a plurality of pipe sleeves (3) and a plurality of semilunar plates (6); the number of the jacking screw rods (2) and the number of the pipe sleeves (3) are consistent; one end of each propping screw rod (2) is movably connected with the bearing cylinder (1) through threads, and the other end of each propping screw rod is movably connected with one end of one pipe sleeve (3) through threads; one end of each pipe sleeve (3) far away from the top support screw rod (2) is fixedly connected with the meniscus (6); the jacking device is arranged in the large-caliber thin-wall steel pipe; when the support is carried out, the meniscus is contacted with the inner wall of the large-caliber thin-wall steel pipe. The jacking device provided by the utility model effectively ensures the installation quality of the large-caliber thin-wall steel pipe and improves the site construction efficiency.
Description
Technical Field
The utility model belongs to the technical field of propping equipment, and particularly relates to a propping device suitable for butt welding deformation prevention of large-caliber thin-wall steel pipes; the device is mainly suitable for the steam distribution pipe of the power station air-cooled condenser and the deformation prevention of the transportation, the opposite installation adjustment and the welding process of the similar large-caliber steel pipes.
Background
The air cooling island is used as a low-pressure cylinder exhaust steam cooling device of the steam turbine, a large amount of steam is discharged into the air cooling island and is cooled into condensed water in a mechanical ventilation direct air cooling mode, a steam distributing pipe is arranged above a platform of the air cooling island, exhaust steam from the steam turbine is received and distributed and transmitted to an air cooling fin tube bundle, and the steam is mainly cooled in the fin tube bundle to be condensed. The connection of the steam distribution tube to the tube bundle end plates is open so that steam is continuously distributed into the fin tube bundles through the ports.
The steam distribution pipe is generally manufactured in sections in a factory, the length of a single section is generally not more than 12m in order to facilitate transportation, and the steam distribution pipe is hoisted in place to realize assembly installation and welding connection after being transported to the site. Because the air-cooled steam distribution pipeline is large in size and relatively thin in pipe wall thickness, the pipeline is easy to deform in the transportation, hoisting or storage processes, and the problems of deformation and the like in the butt-joint assembly and welding processes after hoisting in place are solved. In the prior art, in order to realize assembly, installation and welding connection, an ear plate is usually welded on the inner wall of a pipeline, and a method for adjusting the dislocation in the pipeline aligning process is matched with a chain block, however, the method has the biggest defects that an additional ear plate is welded on a pipeline base material, the pipeline base material can generate additional local stress in the process of adjusting traction and ear plate welding, and the ear plate is cut off to have certain damage to the pipeline wall.
Besides the steam distributing pipe, other similar large-caliber thin-wall steel pipes such as air cooling steam exhaust pipelines and the like have the problems; therefore, a jacking device is needed to solve the above technical problems.
Disclosure of Invention
Aiming at the technical problems, the utility model provides a propping device suitable for butt welding of large-caliber thin-wall steel pipes to prevent deformation; the jacking device effectively ensures the installation quality of the large-caliber thin-wall steel pipe and improves the site construction efficiency.
The utility model is realized by the following technical scheme:
a jacking device suitable for butt welding deformation prevention of large-caliber thin-wall steel pipes, the jacking device comprising: a bearing cylinder, a plurality of top supporting lead screws, a plurality of pipe sleeves and a plurality of semilunar plates; the number of the jacking lead screws and the number of the pipe sleeves are consistent;
one end of each jacking screw rod is movably connected with the bearing cylinder through threads, and the other end of each jacking screw rod is movably connected with one end of one pipe sleeve through threads;
one end of each pipe sleeve, which is far away from the jacking screw rod, is fixedly connected with the meniscus;
the jacking device is arranged in the large-caliber thin-wall steel pipe; when the support is carried out, the meniscus is contacted with the inner wall of the large-caliber thin-wall steel pipe.
Further, a plurality of screw rod connecting holes are formed in the middle position along the width of the bearing cylinder, and all the screw rod connecting holes are positioned on the same circular section;
a nut or a short sleeve with internal threads is arranged at the upper part of each screw rod connecting hole; the nut or the short sleeve is arranged on the bearing cylinder through welding.
Further, the pipe sleeve arranged at the other end of the jacking screw rod is a pipe sleeve without internal threads or a long sleeve with internal threads; when the sleeve without internal threads is adopted, a nut is arranged at one end of the sleeve, which is connected with the jacking screw rod.
Further, the length of the pipe sleeve is 500-800mm.
Further, two parallel semilunar plates are connected at one end of the pipe sleeve, which is far away from the jacking screw rod, through welding;
the meniscus sampling thickness is made by cutting a steel plate with the thickness of 12-20 mm;
the radian of the meniscus is the same as that of the inner wall of the large-caliber thin-wall steel pipe.
Further, the number of the jacking screws is four, six or eight; when four jacking screws are adopted, the central included angle between every two adjacent jacking screws is 90 degrees, and when six jacking screws are adopted, the central included angle between every two adjacent jacking screws is 60 degrees; when eight jacking screws are adopted, the center included angle between every two adjacent jacking screws is 45 degrees.
Further, the bearing cylinder is formed by processing a thick-wall steel pipe; the specification of the thick-wall steel pipe is phi 530x16 mm-phi 820x16mm (outer diameter x wall thickness), and the length of the pipe section adopted by the bearing cylinder is 200-500mm.
Further, a plurality of reinforcing steel bars for reinforcing the integral rigidity of the bearing cylinder are welded in the bearing cylinder.
Further, the top support screw rod is manufactured by adopting a standard screw rod with the outer diameter of 36-50 mm; the length of the jacking screw rod is 1100-1600mm.
Further, a handle for rotation is welded at the middle position of the top support screw rod.
The beneficial technical effects of the utility model are as follows:
the jacking device provided by the utility model avoids the construction method that the internal welding support or the welding lifting lug is matched with the chain block to adjust the pipe joint in the conventional butt joint installation and welding process of the large-caliber thin-wall steel pipe; the jacking device provided by the utility model effectively ensures the installation quality of the large-caliber thin-wall steel pipe and improves the site construction efficiency.
The jacking device provided by the utility model aims to solve the problems of difficult adjustment of the butt joint group due to thin pipe wall in the installation and welding processes of a steam distribution pipe, an air cooling steam exhaust pipeline and other large-caliber thin-wall steel pipes in the prior art, and the jacking device provided by the utility model is adopted to jack the pipe so that the pipe wall is uniformly stressed, the stress condition on the supporting point and the whole pipeline section is better, and the smooth completion of the butt joint of the pipeline is ensured.
The materials and the components used for manufacturing the jacking device can be easily obtained on the construction project site, the processing and manufacturing are simple and easy, and the materials used are conventional materials.
Drawings
FIG. 1 is a schematic diagram of a propping device suitable for butt welding of large-caliber thin-wall steel pipes to prevent deformation (a propping screw is connected with a bearing cylinder through a nut);
FIG. 2 is a schematic structural diagram of a propping device suitable for butt welding of large-caliber thin-wall steel pipes to prevent deformation (a propping screw rod is connected with a bearing cylinder through a short sleeve with internal threads);
the reference numerals are: 1. a force bearing cylinder; 2. supporting a screw rod; 3. a pipe sleeve; 4. a nut; 5. a handle; 6. a meniscus; 7. reinforcing steel bars; 8. an internally threaded short sleeve.
Description of the embodiments
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
On the contrary, the utility model is intended to cover any alternatives, modifications, equivalents, and variations as may be included within the spirit and scope of the utility model as defined by the appended claims. Further, in the following detailed description of the present utility model, certain specific details are set forth in order to provide a better understanding of the present utility model. The present utility model will be fully understood by those skilled in the art without the details described herein.
The utility model mainly aims at the problems that the large-caliber steel pipe is easy to generate dislocation and welding stress deformation in the installation and butt joint and welding processes of the air-cooled steam distribution pipe and other large-caliber thin-wall steel pipes; in the utility model, the large-caliber thin-wall steel pipe refers to a pipeline with the diameter larger than 2m and the wall thickness of the pipeline smaller than 0.5barg according to the pressure bearing.
As shown in fig. 1-2, the present utility model provides a propping device suitable for butt welding of large-caliber thin-wall steel pipes, which comprises: a bearing cylinder 1, a plurality of top supporting lead screws 2, a plurality of pipe sleeves 3 and a plurality of semilunar plates 6; the number of the jacking screw rods 2 is consistent with that of the pipe sleeves 3;
one end of each jacking screw rod 2 is movably connected with the bearing cylinder 1 through threads, and the other end of each jacking screw rod is movably connected with one end of one pipe sleeve 3 through threads; one end of each pipe sleeve 3, which is far away from the jacking screw rod 2, is fixedly connected with the meniscus 6; the jacking device is arranged in the large-caliber thin-wall steel pipe; when the support is carried out, the meniscus is contacted with the inner wall of the large-caliber thin-wall steel pipe.
In this embodiment, a plurality of screw connecting holes are formed along the middle position of the width of the bearing cylinder 1, and all the screw connecting holes are located on the same circular section;
a nut or a short sleeve with internal threads is arranged at the upper part of each screw rod connecting hole, and specifically, the length of the short sleeve with internal threads is 100-200mm; the nut or the short sleeve is arranged on the bearing cylinder 1 through welding; a nut or a short sleeve with internal threads is used for propping up the screw rod 2 to be screwed in and out of the bearing cylinder 1; the length of the short sleeve with the internal thread is longer than that of the nut, so that the nut is more beneficial to welding with the bearing barrel;
the pipe sleeve 3 arranged at the other end of the jacking screw rod 2 is a pipe sleeve without internal threads or a long sleeve with internal threads (as shown in figure 2); when a pipe sleeve without internal threads is adopted, a nut is arranged at one end of the pipe sleeve connected with the jacking screw rod 2 (as shown in figure 1); the sleeve without internal threads or the long sleeve with internal threads has the same length, and the end parts can be welded with the meniscus.
In this embodiment, the length of the sleeve 3 is 500-800mm.
In this embodiment, when one end of the propping screw 2 is connected with the bearing cylinder 1 through a nut welded on the bearing cylinder 1, and the other end is connected with a sleeve without internal threads through a nut, the two ends of the propping screw are connected with the nuts at the two ends in a threaded manner, and the connection position of the propping screw and the nuts at the two ends is the acting point of the propping action. Nuts connected with two ends of the top support screw rod are respectively fixed on the bearing cylinder and the pipe sleeve 3 in a welding mode. Specifically, the pipe sleeve without internal threads can be manufactured by adopting phi 48.3x3.5mm straight seam welded steel pipes with the same specification as the scaffold rod.
In this embodiment, the number of the jacking screws is four, six or eight; when four jacking screws are adopted, the central included angle between every two adjacent jacking screws is 90 degrees, and when six jacking screws are adopted, the central included angle between every two adjacent jacking screws is 60 degrees; when eight supporting screw rods are adopted, the center included angle between every two adjacent supporting screw rods is 45 degrees;
in this embodiment, two parallel menisci 6 are welded to the end of the sleeve 3 remote from the jacking screw 2;
the meniscus 6 is manufactured by cutting a steel plate with the sampling thickness of 12-20mm (preferably 12 mm); the radian of the meniscus 6 is the same as that of the inner wall of the large-caliber thin-wall steel pipe. The meniscus is the propping force surface of the whole propping device on the inner wall of the large-caliber thin-wall steel pipe.
The number of the jacking screw rods is four, six or eight; when four jacking screws are adopted, the central included angle between every two adjacent jacking screws is 90 degrees, and when six jacking screws are adopted, the central included angle between every two adjacent jacking screws is 60 degrees; when eight jacking screws are adopted, the center included angle between every two adjacent jacking screws is 45 degrees.
In the embodiment, the force bearing cylinder 1 is formed by processing a thick-wall steel pipe; the specification of the thick-wall steel pipe is phi 530x16 mm-phi 820x16mm (the thickness of the outer diameter x wall) (preferably phi 530x16 mm), and the length of the pipe section adopted by the bearing cylinder 1 is 200-500mm (preferably 300 mm).
In this embodiment, a plurality of reinforcing steel bars 7 for reinforcing the overall rigidity of the bearing cylinder 1 are welded inside the bearing cylinder 1. Specifically, the reinforcing bar 7 needs to avoid the moving position of the jack screw when welding, so that the reinforcing bar 7 does not interfere with the screwing in and out of the jack screw.
In the embodiment, the top support screw rod 2 is made of a standard screw rod with the outer diameter of 36-50 mm; preferably, a standard screw with an outer diameter=36 mm is used;
the length of the jacking screw rod 2 is 1100-1600mm (preferably 1100 mm);
the jacking screw rod 2 can rotate and stretch between the bearing cylinder 1 and the pipe sleeve 3, and further the specification of the jacking device can be adjusted according to the diameter of the large-diameter thin-wall steel pipe, so that the jacking device can be suitable for large-diameter thin-wall steel pipes with more diameter specifications.
A handle 5 for rotation is welded at the middle position of the jacking screw 2. Specifically, the handle 5 is perpendicular to the jacking screw rod 2, and the length of the handle 5 is 20-50cm. The handle for rotation can utilize the extension arm thick stick to realize laborsaving and single operation when the jacking force is great.
In this embodiment, when the length of the supporting screw 2 is 1100mm, the radius of the bearing cylinder at one end of the supporting screw is 500mm, the length of the sleeve at the other end is 500mm, the meniscus width is 50mm, and the handle is mounted on the supporting screw and occupies 100mm of the effective length of the supporting screw, that is, the effective telescopic length of the supporting screw is 1000mm, the 500mm supporting screw can be retracted into the bearing cylinder and the 500mm supporting screw is retracted into the sleeve; the whole set of jacking device is configured according to the specification and the size, and the jacking operation range of the inner diameter of the large-caliber thin-wall pipe can be from 2.3m to 4.3m, so that the whole set of jacking device plays a good role in protecting the transportation and installation deformation prevention of the large-caliber thin-wall pipe.
In the utility model, the specification and the length of the supporting screw rod 2, the specification and the size of the bearing cylinder 1, the length of the pipe sleeve 3 and the specification matched with the supporting screw rod can be adjusted according to the inner diameter size of a large-caliber thin-wall pipe which is actually used, so that the application size range of the supporting device for preventing deformation of the whole set of large-caliber thin-wall steel pipe butt welding is reached, and the devices with the same form and different specification sizes of supporting devices for adapting to large-caliber pipelines with different sizes are regarded as the right scope of the utility model.
When the jacking device is operated, partial threads at two ends of a jacking screw rod are hidden in a bearing cylinder 1 and a pipe sleeve 3, and the upper and lower screw rods which are vertically erected in a large-caliber pipe are respectively and symmetrically screwed out through a rotary handle 5, so that the semilunar plates at the upper and lower sides of the vertical bearing cylinder are firstly supported in the large-caliber pipe to be fixed, and then the screw rods in other directions are regulated, so that the two ends of the jacking screw rod are simultaneously stretched or retracted, the screw rod is screwed out or screwed into the bearing cylinder and the pipe sleeve to increase or retract the length of the screw rod, and the jacking compaction of the jacking large-caliber thin-wall pipe until the included angle between the centers of the adjacent screw rods in four directions is 90 degrees, so that the problems of deformation and non-roundness of the large-caliber thin-wall pipe such as an air cooling steam distribution pipe in the transportation, butt joint installation and welding processes are solved.
The supporting device provided by the utility model adopts a semi-rigid supporting principle, and the compression degree of each supporting force point is adaptively adjusted by adjusting the screwing-in and screwing-out of the threaded screw, so that the adjustment of the radian and the dislocation deviation of the pipeline in a certain direction can be obtained, and if more supporting force points are arranged, a more accurate adjusting effect can be obtained.
The anti-deformation jacking device for butt welding of the large-caliber thin-wall steel pipe, which is provided by the utility model, mainly aims at the problem that the large-caliber steel pipe is easy to generate dislocation and welding stress deformation in the process of installing butt welding and welding of an air cooling steam distributing pipe and other large-caliber thin-wall steel pipes, and can effectively overcome the problems. The construction method that the internal welding support or the welding lifting lug is matched with the chain block to adjust the pipe joint in the conventional butt joint installation and welding process of the large-caliber thin-wall steel pipe is avoided, the device effectively ensures the installation quality of the large-caliber thin-wall steel pipe, and improves the site construction efficiency.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. The utility model provides a propping device suitable for heavy-calibre thin wall steel pipe butt welding preapring for an unfavorable turn of events shape, its characterized in that, propping device includes: a bearing cylinder (1), a plurality of supporting screw rods (2), a plurality of pipe sleeves (3) and a plurality of semilunar plates (6); the number of the jacking screw rods (2) is consistent with that of the pipe sleeves (3);
one end of each propping screw rod (2) is movably connected with the bearing cylinder (1) through threads, and the other end of each propping screw rod is movably connected with one end of one pipe sleeve (3) through threads;
one end of each pipe sleeve (3) far away from the top support screw rod (2) is fixedly connected with the meniscus (6);
the jacking device is arranged in the large-caliber thin-wall steel pipe; when the support is carried out, the meniscus is contacted with the inner wall of the large-caliber thin-wall steel pipe.
2. The jacking device suitable for butt welding of large-caliber thin-wall steel pipes and preventing deformation according to claim 1 is characterized in that a plurality of screw connecting holes are formed in the middle position along the width of the bearing cylinder (1), and all the screw connecting holes are positioned on the same circular section;
a nut or a short sleeve with internal threads is arranged at the upper part of each screw rod connecting hole; the nut or the short sleeve is arranged on the bearing cylinder (1) through welding.
3. The propping device suitable for butt welding of large-caliber thin-wall steel pipes and deformation prevention according to claim 1, wherein the pipe sleeve (3) arranged at the other end of the propping screw (2) is a pipe sleeve without internal threads or a long sleeve with internal threads; when the pipe sleeve without internal threads is adopted, a nut is arranged at one end of the pipe sleeve (3) connected with the top support screw rod (2).
4. A jacking device suitable for butt welding of large caliber thin wall steel pipes as claimed in claim 1, characterized in that the length of the pipe sleeve (3) is 500-800mm.
5. The propping device suitable for butt welding of large-caliber thin-wall steel pipes and deformation prevention according to claim 1 is characterized in that two parallel semilunar plates (6) are connected at one end of a pipe sleeve (3) away from a propping screw (2) through welding;
the meniscus (6) is manufactured by cutting a steel plate with the sampling thickness of 12-20 mm;
the radian of the meniscus (6) is the same as the radian of the inner wall of the large-caliber thin-wall steel pipe.
6. The jacking device suitable for butt welding of large-caliber thin-wall steel pipes and capable of preventing deformation according to claim 1, wherein the number of the jacking screws is four, six or eight; when four jacking screws are adopted, the central included angle between every two adjacent jacking screws is 90 degrees, and when six jacking screws are adopted, the central included angle between every two adjacent jacking screws is 60 degrees; when eight jacking screws are adopted, the center included angle between every two adjacent jacking screws is 45 degrees.
7. The propping device suitable for butt welding of large-caliber thin-wall steel pipes and deformation prevention according to claim 1 is characterized in that the bearing barrel (1) is formed by processing thick-wall steel pipes; the specification of the thick-wall steel pipe is phi 530x16 mm-phi 820x16mm, and the length of a pipe section adopted by the bearing cylinder (1) is 200-500mm.
8. The propping device suitable for butt welding of large-caliber thin-wall steel pipes and preventing deformation according to claim 1 is characterized in that a plurality of reinforcing steel bars (7) for reinforcing the integral rigidity of the bearing cylinder (1) are welded in the bearing cylinder (1).
9. The propping device suitable for butt welding of large-caliber thin-wall steel pipes and preventing deformation according to claim 1 is characterized in that the propping screw (2) is made of a standard screw with the outer diameter of 36-50 mm; the length of the top support screw rod (2) is 1100-1600mm.
10. A jacking device suitable for butt welding of large-caliber thin-wall steel pipes and preventing deformation according to claim 1, characterized in that a handle (5) for rotation is welded in the middle of the jacking screw (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705379.7U CN220217380U (en) | 2023-07-03 | 2023-07-03 | Anti-deformation jacking device suitable for butt welding of large-caliber thin-wall steel pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705379.7U CN220217380U (en) | 2023-07-03 | 2023-07-03 | Anti-deformation jacking device suitable for butt welding of large-caliber thin-wall steel pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220217380U true CN220217380U (en) | 2023-12-22 |
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ID=89176602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321705379.7U Active CN220217380U (en) | 2023-07-03 | 2023-07-03 | Anti-deformation jacking device suitable for butt welding of large-caliber thin-wall steel pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220217380U (en) |
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2023
- 2023-07-03 CN CN202321705379.7U patent/CN220217380U/en active Active
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