JP2015166521A - Vertical conduit tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertical conduit tube that can improve workability by making a coupling operation efficient.SOLUTION: A spiral flow type vertical conduit tube 1 including an outer cylinder part 2 and a spiral part provided in the outer cylinder part 2 includes a spiral body 6 which has center members 5, each provided with a spiral part 4 in one body, stacked at a periphery of a center column 3 and the outer cylinder part 2 arranged at a periphery of the spiral body 6. The vertical conduit tube 1 can be formed by forming the spiral body 6 by stacking the center members 5 and then arranging the outer cylinder part 2 at the periphery of the spiral body 6. A coupling member is inserted into center columns 3 of the plurality of center members 5, and the columns 3, 3 are coupled together with the coupling member and anchored at upper and lower anchoring parts 35, so that the plurality of center members 5, 5 stacked in the outer cylinder part 2 can be united.

Description

  The present invention relates to a vertical water guide pipe with a spiral guide used for a sewer manhole, a rainwater inflow pipe, and the like.

  Conventionally, when there is a drop in the inflow pipe and the outflow pipe in the sewer manhole, the drop method is selected depending on the height of the drop, and the spiral flow (swirl flow) method is known.

  This is a system in which a swirl flow is obtained by giving a water flow in a tangential direction with a head having a circular cross section. The streamline of this method changes from a swirl flow to a vertical flow due to gravity. In this case, it is necessary to obtain the factors of the fall amount, the diameter, the initial flow velocity, and the landing depth for each test.

  As shown in FIG. 16, a vertical water guide pipe with a spiral guide path provided with an air passage is provided with a spiral plate 102 having a helicoid surface for generating a spiral flow around a hollow cylinder (air vent) 101. (For example, see Patent Documents 1 to 4). These vertical water conduits are made of FRP, FRPM, etc., and they themselves do not have strength against earth pressure. Therefore, in the construction, underground structures such as boxes are formed by walls made of concrete. The vertical water conduit is disposed in the internal space of the underground structure. For this reason, it is easy to be restricted by an increase in the size of the vertical water conduit, and in order to secure a flow rate, it is necessary to flow a large amount of water. Therefore, a hollow cylinder that discharges internal air from the top to the outside is required. Furthermore, since it has a double structure of an underground structure and a vertical water conduit, costs are incurred for materials and construction.

  In recent years, in the case of a high head, a spiral flow method with a spiral guide path having a large wall friction resistance, a low arrival speed, and an air passage is often employed.

  Examples of the material of the vertical water conduit include metals such as iron and stainless steel; resin materials such as vinyl chloride resin, fiber reinforced plastic resin, and fiber reinforced polyester resin (for example, Patent Document 2). Adhesion or the like is used.

  Moreover, in the large sized thing provided with the manhole part in the upper part, there exists a vertical water guide pipe which connected the some cylindrical part with the joint in the butt | matching location, and provided the spiral part inside (for example, patent document 5).

JP 2002-322729 A JP 2001-311483 A JP 2001-279798 A JP 2001-271414 A JP 2004-339922 A

  In the conventional vertical water conduit, the joining between the outer tube portions is mainly performed in terms of strength, and the joining strength inside is not sufficiently considered. In addition, bonding and joints are used for joining the members. However, since work is required for each joint location, improvement in efficiency and overall workability have been desired.

  Then, in view of the above-described problems, the present invention aims to provide a vertical water conduit that can improve the efficiency of connection work and improve workability.

  In order to achieve the above object, the invention according to claim 1 is a spiral flow type vertical water conduit provided with an outer cylinder part and a spiral part provided inside the outer cylinder part. A spiral body in which central members integrally provided with the spiral portion are stacked, and the outer cylinder portion disposed around the spiral body are provided.

  The invention according to claim 2 is characterized in that a connecting member is inserted into the central column of the plurality of central members, and the plurality of central columns are connected by the connecting member.

  The invention according to claim 3 is characterized in that both ends of the connecting member are fixedly connected to both-end fixing portions.

  According to a fourth aspect of the present invention, lids are provided on both sides of the outer cylinder part, these lids are in contact with end faces of the outer cylinder part, and fixing parts for the connecting members are provided on the lids on both sides. It is characterized by.

  According to the vertical water conduit described in claim 1 of the present invention, the vertical water conduit can be formed by stacking the central members in the outer cylinder portion to form a spiral body.

  Moreover, according to the vertical water conduit described in claim 2 of the present invention, the connecting member can be inserted into the central column, and a plurality of central members stacked in the outer cylinder portion can be integrated by the connecting member.

  Moreover, according to the vertical water conduit described in claim 3 of the present invention, both ends of the connecting member can be fixed and a plurality of central members can be integrated.

  Moreover, according to the vertical water conduit described in claim 4 of the present invention, both ends of the connecting member can be fixed and a plurality of central members can be integrated.

It is a disassembled perspective view of the upper cover body which shows Example 1 of this invention, an upper division | segmentation outer cylinder part, and a horizontal partition plate. It is a perspective view of a center member same as the above. It is a front view of a center member same as the above. It is a top view of a center member same as the above. It is a perspective view of the division | segmentation outer cylinder part and lower cover body of a lower stage same as the above. It is a whole perspective view same as the above. It is a top view same as the above. FIG. 8 is a cross-sectional view taken along line AA in FIG. It is a disassembled perspective view of the upper cover body, upper division | segmentation outer cylinder part, and horizontal partition which show Example 2 of this invention. It is a perspective view of a center member same as the above. It is a perspective view of the center member which assembled the some center member same as the above. It is a front view of the center member which assembled the some center member same as the above. It is a perspective view of the division | segmentation outer cylinder part and lower cover body of a lower stage same as the above. It is a top view same as the above. It is a whole front view same as the above. It is sectional drawing which shows a prior art example.

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, by adopting a new configuration different from the conventional one, a vertical conduit having an unconventional function can be obtained, and each vertical conduit is described.

  Embodiment 1 of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 8, the vertical water conduit 1 of the present embodiment includes an outer cylinder portion 2 that receives earth pressure, and a central member 5 that is integrally provided with a spiral portion 4 around a central pillar 3 in the vertical direction. The outer cylinder portion 2 is disposed around the spiral body 6, the central column 3 is located at the center of the outer cylinder portion 2, and the central column 3 penetrates in the vertical direction. A through-hole 7 is formed. Further, the vertical water conduit 1 can be made of concrete. The diameter of the through hole 7 is less than half the diameter of the central column 3. In addition, when the through-hole 7 and / or the central pillar 3 are square, the cross-sectional area of the through-hole 7 is less than half of the cross-sectional area of the central pillar 3 including the through-hole 7. Note that the central column 3 does not have an air venting effect for escaping air from the bottom to the top in the center column 3.

  The vertical water guide pipe 1 includes a plurality of divided outer cylinder portions 8 obtained by dividing the outer cylinder portion 2 in the length direction, and the divided outer cylinder portion 8 has a cylindrical shape or a rectangular tube shape, and in this example, a polygonal shape. The figure is shown, specifically a dodecagon.

  As shown in FIG. 2 and the like, the central column 3 has the same N-gon shape (N is a natural number of 6 or more) as the outer cylinder portion 2, in this example, a dodecagon. The spiral portion 4 is a stepped type, and the outer surface is entirely constituted by a flat surface. Specifically, as shown in FIG. 2 and the like, a portion other than the uppermost and lowermost steps is formed by a plurality of basic staircase portions 11 having the same configuration, and the basic staircase portion 11 has a trapezoidal plane and an L-shaped cross section. None, the plane is trapezoidal and has a plate-like flat plate portion 12 and a lower step portion 13 provided downstream of the flat plate portion 12 on the downstream side, and the angle of the flat plate portion 12 is 360 degrees divided by N = 12. 30 degrees, 30 degrees is a basic angle in the case where the outer cylinder portion 2 is a dodecagon, and N is a basic number.

  The planar shape of the lower step portion 13 is a trapezoidal shape that is approximately one half of the flat plate portion, and the thicknesses of the flat plate portion 12 and the lower step portion 13 are substantially the same. Further, the inner end surface 11N of the basic staircase portion 11 has an L shape and is connected to the central column 3, and the outer end surface 11G of the basic staircase portion 11 has an L shape and has an inner portion of the divided outer cylinder portion 8. It is connected or arranged close to the circumference. The upper and lower surfaces of the flat plate portion 12 and the lower surface of the lower step portion 13 are parallel to each other and are horizontal surfaces (horizontal surfaces), and the remaining surfaces are configured by vertical surfaces (vertical surfaces). Yes. Further, the outer end faces 11G and 11G of the adjacent basic staircase portions 11 form an angle of 30 degrees which is a basic angle θ.

  The upstream side surface (upper side) of the basic staircase portion 11 is arranged so that the downstream side surface of the lower step portion 13 faces the upstream side surface of the flat plate portion 12 of the downstream side (lower side) basic staircase portion 11. A plurality of basic steps 11, 11,... Are integrally formed. The lowermost basic staircase portion 11A is composed only of the flat plate portion 12, and the uppermost basic staircase portion 11B is integrally provided with an overhanging portion 14 on the upstream side of the flat plate portion 12. The outer end surface 11G of the uppermost basic staircase portion 11B and the outer end surface 11G of the overhanging portion 14 form an angle of 30 degrees, which is the basic angle θ.

  Further, as shown in FIG. 3, in the central member 5, the central column 3 is divided into three parts by the joint part 3T, and the basic staircase parts 11, 11A, 11B are also divided into three parts, corresponding to the three divided central members 5. Thus, the divided outer cylinder portions 8 are respectively formed. In this example, the central member 5 has four reference staircase portions, but may have a plurality of basic staircase portions. In other words, the spiral body 6 is formed by stacking three central members 5, 5, and 5 in FIG. 3.

  Further, the central members 5 and 5 are vertically overlapped with the upper surface of the overhanging portion 14 of the lower central member 5 so that the lower surface of the basic staircase portion 11A of the upper central member 5 is overlapped, and the spiral body 6 is formed. ing.

  As shown in FIG. 1, an upper divided outer cylinder portion 8 without a central member is provided on the upper portion of the vertical water conduit 1. A vertical partition 16 is provided in the upper divided outer cylinder portion 8. The vertical partition 16 includes a pair of partition plates 17 and 17A provided in the radial direction. The pair of partition plates 17 and 17A have an angle of approximately 60 degrees, and the outer ends thereof are divided into the outer cylinder portion 8. The inner ends thereof are connected to the central column 3.

  In addition, a plate-like upper lid body 21 is disposed at the upper part of the upper divided outer cylinder portion 8, and an opening 22 serving as an inflow portion is provided at the center of the upper lid body 21. A lid (not shown) is provided so as to be openable and closable. The opening 22 is accessible to a person and has a diameter of 600 mm or more. Moreover, as shown in FIG. 6, the opening part 22 is provided in the downstream of the partition plate 17 of the vertical partition 16, and the opening part 22 is provided in the upper part of the water conduit 1 in this way.

  A horizontal partition plate 23 is sandwiched between the upper divided outer cylinder portion 8 and the lower divided outer cylinder portion 8. This horizontal partition plate 23 has a dodecagonal shape, and has a sandwiching portion 24 sandwiched between upper and lower central pillars 3 and 3 at the center. This sandwiching portion 24 is substantially the same as the cross-sectional shape of the central pillar 3, and A hole 7 is formed. The horizontal partition plate 23 has a rectangular partition opening 25. The partition opening 25 has an upstream edge 25J and a downstream edge 25K in the radial direction, and is located on the upstream edge 25J side. Is placed on the overhanging portion 14 of the lower basic staircase portion 11A. The upstream edge 25J side is located at the boundary between the flat plate portion 12 and the overhanging portion 14. Further, the angle formed by the upstream edge 25J and the downstream edge 25K is 180 degrees or more and 270 degrees or less, in this example, 240 degrees, and the upper divided outer cylinder is aligned with the partition plate 17 so that the downstream edge 25K is aligned with the partition plate 17. A horizontal partition plate 23 is disposed below the portion 8, and the lower portion of the vertical partition 16 is closed by the horizontal partition plate 23.

  As shown in FIG. 5, a lower divided outer cylinder portion 8 having a discharge portion 31 is provided at the lower part of the vertical water conduit 1, and a central member 5 is provided in the lower divided outer cylinder portion 8. ing. The discharge part 31 has a square shape. Further, a plate-like lower lid body 32 is provided at the lower part of the lower divided outer cylinder portion 8. And the said discharge part 31 is provided in the downstream of the basic step part 11A of the lowest step.

  In the center of the upper surface of the upper lid 21 and the center of the lower surface of the lower lid 32, a concave fixing portion 35 is provided corresponding to the through hole 7, and a fixing plate made of metal or the like is provided at the bottom of the fixing portion 35. 36 is provided, and through holes (not shown) communicating with the through holes 7 are formed in the fixing plate 36 and the upper and lower lid bodies 21 and 32. Then, a connecting member 37 made of steel or the like is inserted into the stacked central pillars 3, 3... And the upper and lower fixing portions 35, and both ends of the connecting member 37 are fixed to the upper and lower fixing portions 35 by a fixing tool. In this case, a female screw portion is provided at the end of the connecting member 37 made of a steel rod and the like, and a fixing member is screwed into the female screw portion to be fixed, or the connecting member 37 such as a PC steel material is tensioned. It may be fixed with a fixing tool. As shown in FIG. 8, a plurality of connecting members 37, 37... May be connected by a coupler 38 which is a connecting tool, and the coupler 38 is provided at a joint portion of the central column 3.

  Next, the construction method of the said vertical water conduit 1 is demonstrated. First, an excavation hole (not shown) for embedding the outer cylinder portion 2 is formed in the ground, and after assembling the vertical water conduit 1 composed of the secondary product inside the excavation hole, the surroundings are backfilled, Earth pressure is applied to the outer cylinder portion 2, and the vertical water conduit 1 has strength against the earth pressure. Specifically, the lower lid body 32 is fixed to the lower part of the lower divided outer cylinder portion 8, and the joint between the divided outer cylinder portion 8 and the lower lid body 32 is waterproofed to ensure water tightness. In this case, the members are connected and fixed with bolts or the like. Similarly, a prevention process is applied to each connection and connection portion.

  On the lower divided outer cylinder portion 8, the central divided outer cylinder portion 8 provided with the central member 5 is overlapped and connected, and the lower spiral portion 4 and the upper spiral portion 4 are the lower basic staircase portion. 11A is overlapped and connected so as to be placed on a part of the upper surface, in this example, the overhanging portion 14, to form a continuous spiral body 6, and the lower divided outer cylinder portion 8 and the central divided portion The outer cylinder part 8 is connected. Further, the upper central column 3 is aligned with the lower central column 3, and the connecting member 37 is inserted into the through holes 7, 7. In actual construction, after forming the outer cylinder part 2, the central member 5 is arranged inside the outer cylinder part 2.

  A horizontal partition plate 23 is overlapped and connected on the central divided outer cylinder portion 8, and an upper divided outer cylinder portion 8 is overlapped and connected on the horizontal partition plate 23.

  Further, the connecting member 37 is inserted into the middle central column 3, the sandwiching portion 24 and the upper central column 3, the upper end of the connecting member 37 is inserted into the fixing portion 35 of the upper lid 21, and both ends of the connecting member 37 are By fixing at the fixing portions 35 and 35 of the lower lid bodies 21 and 32, the plurality of central pillars 3 and 3, the sandwiching portion 24 and the upper and lower lid bodies 21 and 32 are integrated by the connecting member 37.

  The water flowing from the opening 22 falls from the partition opening 25 onto the spiral part 4 of the middle divided outer cylinder part 8 and is guided by the spiral body 6 to become a spiral flow and is discharged from the discharge part 31 to the outside. Is done. In this case, since the concrete outer cylinder part 2 receives earth pressure, the vertical cross-sectional area of the outer cylinder part 2 through which water flows can be increased, and the vertical water conduit 1 having a larger cross-sectional area than the flow rate. Therefore, conventional air venting is not necessary. Moreover, since the vertical water conduit 1 is backfilled, the cost can be reduced.

  In addition, in a state where there is no water inside, the operator can enter the inside through the opening 22 and ascend and descend using the stepped spiral body 6.

  Thus, in the present embodiment, corresponding to claim 1, in the vertical flow pipe of the spiral flow system including the outer tube portion 2 and the spiral portion provided inside the outer tube portion 2, the central column 3 Are provided with a spiral body 6 in which a central member 5 integrally provided with a spiral portion 4 is stacked, and the outer cylinder portion 2 disposed around the spiral body 6. Therefore, the central member 5 is provided in the outer cylinder portion 2. The vertical water conduit 1 can be formed by stacking to form the spiral body 6.

  In this way, in this embodiment, corresponding to claim 2, the connecting member 37 is inserted into the central column 3 of the plurality of central members 5, and the plurality of central columns 3 and 3 are connected by the connecting member 37. Then, the connecting member 37 is inserted into the central column 3, and the connecting members 37 can integrate the plurality of central members 5 and 5 stacked in the outer cylinder portion 2.

  In this way, in this embodiment, corresponding to claim 3, both ends of the connecting member 37 are fixed and connected to the both end fixing portions 35, 35. Therefore, both ends of the connecting member 37 are fixed to a plurality of central portions. The members 5 and 5 can be integrated.

  In this way, in this embodiment, corresponding to claim 4, upper and lower lid bodies 21 and 32 are provided on both sides of the outer cylinder portion 2, and these upper and lower lid bodies 21 and 32 are provided outside. Since the fixing portions 35 and 35 that contact the end surface of the cylindrical portion 2 and fix the connecting member 37 to the upper lids 21 and 32 on both sides are provided, both ends of the connecting member 37 are fixed and a plurality of central members 5 and 5 are fixed. 5 can be integrated.

  Further, as an effect of the embodiment, the spiral portion 4 can be easily manufactured by molding concrete using a mold because the entire outer surface is constituted by a flat surface. In this case, the single step or the plurality of basic step portions 11, 11A, 11B of the spiral portion 4 may be molded and then integrated. Further, the upper surface of the overhanging portion 14 of the lower central member 5 is connected so that the lower surface of the basic staircase portion 11A of the upper central member 5 is overlapped, and the spiral body 6 in which the plurality of spiral portions 4, 4 are continuous is connected. Can be configured. Further, a horizontal partition plate 23 is provided between the upper divided outer cylinder portion 8 and the lower divided outer cylinder portion 8, and a rectangular partition opening 25 is provided in the clamping portion 24, so that the uppermost divided portion is divided. Since the vertical partition 16 is provided in the outer cylinder portion 8, the water flowing in from the opening 22 can be guided to the lower spiral portion 4 by the partition opening 25. Further, a horizontal partition plate 23 is provided between the upper divided outer cylinder portion 8 and the lower divided outer cylinder portion 8, and the partition opening portion 25 is provided in the horizontal partition plate 23. The water flowing in from 22 can be allowed to flow to the lower split outer cylinder portion 8 within a predetermined range.

  FIGS. 9-15 shows Example 2 of this invention, attaches | subjects the same code | symbol to the same part as the said Example 1, and abbreviate | omits the detailed description. In this example, a modification of the spiral body is shown, and the spiral body 6 forms a 360-degree spiral by connecting the upper member 41, the middle member 42, and the lower member 43, which are spiral portions. The upper, middle, and lower members 41, 42, and 43 have the same configuration, and the upper and lower surfaces thereof have a spiral shape formed of a curved surface, and the central members 5, 5, and 5 integrally have the central pillar 3 at their centers. 5 is formed. Moreover, the outer cylinder part 2 and the center pillar 3 are circular.

  An upper edge 51 and a lower edge 52 in the radial direction are provided on the upstream (upper end) and downstream (lower end) of the upper, middle, and lower members 41, 42, and 43, and the upper and lower edges 51 and 52 have cross-sectional angles. Make a mold. Further, the upper surface 51J of the upper edge portion 51 is a horizontal surface, the lower surface 52K of the lower edge portion 52 is a horizontal surface, and is continuous from the inner end portion 51N of the upper surface 51J of the upper edge portion 51 to the outer end portion 52G of the lower edge portion 52. A curved surface is formed. Further, the upper end surface of the central column 3 is flush with the upper surface 51J of the upper edge portion 51, and the lower end surface of the central column 3 is flush with the lower surface 52K of the lower edge portion 52. The upper, middle, and lower members 41, 42, and 43 are provided with the divided outer cylinder portion 8 on the outer periphery, and the upper, middle, and lower members 41, 42, and 43 are arranged in the divided outer cylinder portion 8. It is a basic division.

  In this example, the upper lid 21 is not provided with an opening, but the uppermost divided outer cylinder portion 8 is provided with an opening 22 serving as an inflow portion. Further, a circular discharge portion 31 is formed in the lowermost divided outer cylinder portion 8. The lowermost divided outer cylinder portion 8 is not provided with a spiral portion. Therefore, in the lowermost divided outer cylinder portion 8, the central column 3 can be erected integrally on the upper surface of the lower lid 32, or a separate central column 3 can be used. The central column 3 is separate from the lower lid 32.

  Then, similarly to the first embodiment, the divided outer cylinder portion 8 having the discharge portion 31 is connected to the lower lid body 32, and the divided outer cylinder provided with the upper, middle, and lower members 41, 42, and 43 thereon. The parts 8, 8, and 8 are connected.

  In this case, the lower member 43 is overlapped so that the lower edge portion 52 is located on the upstream side of the discharge portion 31, and when the separate central pillar 3 is used in the lowermost divided outer cylinder portion 8, etc. The central column 3 is disposed between the central column 3 of the lower member 43 and the lower lid 32. In the upper, middle, and lower members 41, 42, and 43, the upper surface 51J of the upper edge portion 51 of the middle, lower members 42, and 43 is overlapped with the lower surface 52K of the lower edge portion 52 of the upper and middle members 41, 42. In addition, by overlapping the upper surface 51J of the upper edge portion 51 of the lower member with the lower surface 52K of the lower edge portion 52 of the upper member in this way, a plurality of members 41, 42, 43 having the same configuration are connected or A continuous helical body 6 is formed in alignment.

  Next, the upstream edge portion 25J of the partition opening 25 is substantially aligned with the upper edge portion 51 of the upper member 41, and the horizontal partition plate 23 is overlapped and connected on the divided outer cylinder portion 8 including the upper member 41. Further, the uppermost divided outer cylinder portion 8 is overlaid on the horizontal partition plate 23. In this case, the partition plate 17 of the vertical partition 16 is substantially aligned with the upstream edge 25J, and the upper divided outer cylinder portion 8 is overlapped and connected to the horizontal partition plate 23.

  As in the first embodiment, the connecting member 37 is inserted into the through hole 7 of the central column 3 simultaneously with the connection of the divided outer cylinder portions 8, 8,..., And the end portion of the connecting member 37 is fixed vertically. Fixes in the parts 35 and 35.

  As described above, in this embodiment, the same operations and effects as those of the first embodiment are obtained.

  Moreover, in this example, since the basic divided bodies in which the upper, middle, and lower members 41, 42, and 43 are arranged in the divided outer cylinder portion 8 form a common (same) configuration, a plurality of basic divided bodies are stacked. The spiral body 6 surrounded by the divided outer cylinder portion 8 can be configured.

  The present invention is not limited to this embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, the central member and the divided outer cylinder part may be integrated or separate. Further, the vertical water conduit may be made of metal, synthetic resin, FRP, or the like other than concrete. Moreover, you may comprise a spiral part with the inclination board arrange | positioned diagonally in flat form.

DESCRIPTION OF SYMBOLS 1 Vertical water guide pipe 2 Outer cylinder part 3 Central pillar 4 Spiral part 5 Central member 6 Spiral body
21 Upper lid
32 Lower lid
35 Fusing unit

Claims (4)

In a spiral flow type vertical water conduit provided with an outer cylinder part and a spiral part provided inside the outer cylinder part, a spiral body in which central members integrally provided with the spiral part around a central column are stacked; A vertical water conduit comprising the outer tube portion arranged around the spiral body. The vertical water conduit according to claim 1, wherein a connecting member is inserted into the central pillar of the plurality of central members, and the central pillars are connected by the connecting member. The vertical water conduit according to claim 2, wherein both ends of the connecting member are fixed and connected to both-end fixing portions. 4. The vertical according to claim 3, wherein lids are provided on both sides of the outer cylinder part, the lids abut against end faces of the outer cylinder part, and fixing parts for the connecting member are provided on the lids on both sides. Water conduit.

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