JP5612863B2 - Bulkhead connection and separation mechanism - Google Patents

Description

  In the present invention, for example, in a space contaminated with radioactivity that is partitioned by a partition wall with respect to a space that is not contaminated with radioactivity, a small space that is not contaminated with radioactivity is provided in the space. The present invention relates to a mechanism for communicating with or blocking an uncontaminated external space without exposing the space to the contaminated space. Furthermore, the present invention relates to a partition connection / separation mechanism capable of separating the uncontaminated small space so that the small space can be freely moved in the contaminated space.

  When working in a radioactively contaminated space at a nuclear facility, etc., the intake and exhaust pipes are connected to intake and exhaust the interior, and the interior is slightly pressurized against the outside, such as a so-called airline suit Wear pollution protective clothing. When working with contaminated protective clothing, the inside of the contaminated protective clothing is not contaminated with radioactivity, but the outside is contaminated with radioactivity. When people move outside the facility, it is necessary to remove contamination outside of the protective clothing. However, removal of this contamination requires a lot of work.

  Japanese Patent Laid-Open No. 4-105099, which is the following Patent Document 7, states that an operator enters and exits a contaminated protective clothing from a non-contaminated region without passing through the contaminated region while wearing the contaminated protective clothing. A possible entry / exit mechanism has been proposed. In this mechanism, since the screw is used to attach / detach the cover of the pollution protective clothing to the entrance / exit opening of the side wall that separates between the contaminated area and the non-contaminated area, the attaching / detaching operation of the cover is not performed. There is a problem that it is troublesome and requires skill for operation.

  On the other hand, Japanese Patent Application Laid-Open No. 2002-267794, which is the following Patent Document 3, includes a ring including a shape memory alloy that causes a shape change by heating as a joining and detaching means, and a protective clothing and an entry / exit mechanism using the ring. Have been described. Thereby, when attaching and detaching the lid to the entrance / exit opening formed in the partition, an entrance / exit mechanism that does not require the use of screws or bolts can be configured. According to this, when the entrance / exit opening formed in the partition wall is sealed with the lid, or when the lid is detached, a screw is not required for joining and detaching. Therefore, the operator who performs the attaching / detaching operation does not need skill, and the operator can enter and exit from the opening portion quickly and safely.

  However, in the mechanism, when the door opening formed in the partition is sealed with a lid, or when the lid is detached, a ring including a shape memory alloy as a joining and detaching means is used with a heater. It is necessary to heat to a predetermined temperature. For this reason, a heat source such as a heater is required, and the temperature management is also required, so that both the configuration of the apparatus and the operation thereof are likely to be complicated. Moreover, it cannot be used in an environment where the ring containing the shape memory alloy is exposed to a temperature at which the lid of the opening is detached due to thermal deformation.

JP 2007-137477 A Japanese translation of PCT publication No. 2002-510788 JP 2002-267794 A JP-A-11-502030 Japanese Patent Application Laid-Open No. 08-50075 JP 05-288894 A Japanese Patent Laid-Open No. 04-105099 Japanese Patent Laid-Open No. 04-95667

  In view of the problems in the conventional partition connection / separation mechanism, the present invention quickly and easily connects and separates the edges of a plurality of partition walls without using screws and without using a shape memory alloy. It is an object of the present invention to provide a partition connection / separation mechanism that can be used. For example, the partition wall is for forming a plurality of air-tightly separated spaces, and an object is to enable the plurality of spaces to be air-tightly separated or connected by the partition wall connecting / separating mechanism.

  In the present invention, in order to achieve the above-mentioned object, four annular coupling elements 1a to 1d arranged concentrically are used, and the joint surfaces 3a to 3d having gradients provided in these coupling elements 1a to 1d are sealed with each other. To be connected to each other. On the contrary, by separating the joining surfaces 3a to 3d from each other, a part or the whole of the connecting elements 1a to 1d can be easily separated. Thereby, when the edge portions 10a to 10d of the partition walls 2a to 2d for forming the airtight spaces A to D are fixed to the annular coupling elements 1a to 1d, the plurality of spaces A to D are hermetically separated. Alternatively, the partition walls 2a to 2d can be separated. Further, by providing holding means for holding the connecting elements 1a to 1d in a state in which the joining surfaces 3a to 3d are joined, the connecting means can be easily held.

That is, the partition connection / separation mechanism for airtightly connecting / separating the edges 10a to 10d of the plurality of partitions 2a to 2d for forming the spaces A to D according to the present invention includes the edges 10a to 10d of the partitions 2a to 2d. It has the fixed 1st-4th cyclic | annular connection element 1a-1d. Among these, the first and fourth connecting elements 1a and 1d arranged to face the inner side and the outer side of the ring are formed with positive and negative gradient joining surfaces 3a and 3d in the circumferential direction on the outer peripheral side and the inner peripheral side, respectively. ing. Further, the second and third connecting elements 1b and 1c arranged to face each other with the first and fourth connecting elements 1a and 1d interposed therebetween are joined to the first and fourth connecting elements 1a and 1d. Positive and negative gradient joint surfaces 3b and 3c that are airtightly joined to the surfaces 3a and 3d are formed in the circumferential direction. Further, a pair of stoppers 6 each held in contact with and held by the second and third connecting elements 1b and 1c joined to the first and fourth connecting elements 1a and 1d by the joining surfaces 3a, 3d, 3b and 3c. , 6 are rotatably provided at both ends of shafts 5 and 5 penetrating the first and fourth connecting elements 1a and 1d.

  A more specific configuration of the partition connecting / separating mechanism will be described. The joint surfaces 3b and 3c of the second and third connecting elements 1b and 1c are in contact with the first and fourth connecting elements 1a and 1d which are inscribed and inscribed. Between the joint surfaces 3a and 3d. Alternatively, the joint surfaces 3b and 3c of the second and third connecting elements 1b and 1c sandwich the joint surfaces 3a and 3d of the first and fourth connecting elements 1a and 1d in contact with each other.

  In such a partition coupling / separating mechanism, the first and fourth coupling elements 1a, 1d are concentrically arranged to face the inner side and the outer side, respectively, and the second and third coupling elements 1b, 1c are concentric. It arranges facing the central axis direction. Further, the joint surfaces 3b and 3c of the second and third connecting elements 1b and 1c are airtightly joined to the joint surfaces 3a and 3d of the first and fourth connecting elements 1a and 1d. Thereby, the edge parts 10a-10d of the 1st-4th partition 2a-2d can be joined airtightly. That is, the edge portions 10a to 10d of the first to fourth partition walls 2a to 2d separating the first to fourth spaces A to B are airtightly connected via the first to fourth connection elements 1a to 1d. As a result, the first to fourth spaces A to B are closed in an airtight manner.

  On the other hand, from the above state, any one of the second and third connecting elements 1b and 1c is shifted in the direction of the central axis of the ring, and any one of the joint surfaces 3b and 3c is shifted to the first and fourth connecting elements 1a. When separated from the joint surfaces 3a and 3d of 1d, the first and fourth connecting elements 1a and 1d can be separated by being released from the pressing by the second or third connecting elements 1b and 1c. If this is performed for both the second and third connecting elements 1b and 1c, all the connecting elements 1a to 1d can be separated from each other.

In this way, the second and third connecting elements 1b and 1c can be separated from the first and fourth connecting elements 1a and 1d by shifting in the direction of the central axis of the ring. On the other hand, if the holding means is provided so that the second and third connecting elements 1b and 1c cannot be shifted and separated from the first and fourth connecting elements 1a and 1d, the first and fourth connecting elements 1a and 1d can be separated. The second and third connecting elements 1b and 1c can be restrained with respect to the connecting elements 1a and 1d and can be held so as not to be separated. Further, a pair of stoppers 6 and 6 that hold the first and fourth connecting elements 1a and 1d in contact with and hold the second and third connecting elements 1b and 1c, respectively, are the first and fourth connecting elements 1a. Since it is rotatably provided at both ends of the shafts 5 and 5 penetrating through 1d, the second and third coupling elements 1b and 1c with respect to the first and fourth coupling elements 1a and 1d are described later. One or both can be held and separated.

  As described above, in the partition connection / separation mechanism according to the present invention, the edges 10a to 10d of the openings of the plurality of partition walls 2a to 2d can be quickly and easily performed without using screws or using shape memory alloys. Can be connected and disconnected in an airtight manner. As a result, the edges 10a to 10d of the openings of the partition walls 2a to 2d that partition the plurality of spaces A to D are connected or separated through the connecting elements 1a to 1d, so that the plurality of spaces A to D are airtight. A partition, a part of space can be connected, or an airtight closed space can be separated so that it can freely move in another space.

It is a half section perspective view in the state where the connection element which shows one example of the partition connection separation mechanism of the present invention separated. It is a fragmentary sectional perspective view of the state where the connection element which shows one example of the partition connection separation mechanism of the present invention separated. It is a cross-sectional part enlarged view of the state which the connection element which shows one Example of the partition connection separation mechanism of this invention isolate | separated. It is a cross-sectional part enlarged view of the state which the connection element which shows one Example of the partition connection / separation mechanism of this invention couple | bonded. It is the figure which expanded only the cross-sectional part of the connection element in the state which fixed the edge of the opening of a partition to the connected connection element which shows one Example of the partition connection separation mechanism of this invention. It is the figure which expanded only the cross-sectional part of the connection element in the state which fixed the edge part of the opening of a partition to the connection element partially separated which shows one Example of the partition connection separation mechanism of this invention. It is the figure which expanded only the cross-sectional part of the connection element in the state which fixed the edge part of the opening of a partition to the connection element partially separated which shows one Example of the partition connection separation mechanism of this invention. It is a cross-sectional part enlarged view of the state which the connection element which shows the other Example of the partition connection / separation mechanism of this invention couple | bonded. It is a cross-sectional part enlarged view of the state which the connection element which shows the other Example of the partition connection / separation mechanism of this invention couple | bonded.

In the present invention, first to fourth connecting elements 1a to 1d having an annular shape are prepared, and joining surfaces 3a to 3d having gradients are provided on them, and the first and fourth connecting elements 1a disposed inside and outside the ring, The joining surfaces 3b and 3d of the second and third coupling elements 1b and 1c arranged to face each other with the first and fourth coupling elements 1a and 1d sandwiched between the joining surfaces 3a and 3d of 1d. Thus, the first to fourth connecting elements 1a to 1d are connected to each other in an airtight manner.
Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to examples.

  As shown in FIGS. 1 to 4, the partition wall connecting / separating mechanism includes annular first to fourth connecting elements 1 a to 1 d made of a metal such as stainless steel or aluminum, or a synthetic resin such as ABS resin or polyimide resin. In the illustrated example, the first to fourth connecting elements 1a to 1d have a circular ring shape, and their cross-sectional shapes in the radial direction are uniform in the circumferential direction except for screw holes 9a and 9d described later. . If the shapes of the first to fourth connecting elements 1a to 1d are matched, they may be ring-shaped other than circular. For example, it may be an ellipse, a rectangle with an R with a corner (with a curve), or the like.

  1 and 2 are diagrams in which the first to fourth connecting elements 1a to 1d are arranged so as to be shifted in the direction of the central axis indicated by the one-dot chain line in FIG. 3 and 4 show enlarged shapes of the cross-sections of the first to fourth connecting elements 1a to 1d. FIG. 3 is a view in which the first to fourth connecting elements 1a to 1d are arranged in a shifted manner in the direction of the central axis indicated by the one-dot chain line in FIG. 1, as shown in FIGS. FIG. 4 is a view in which the first to fourth connecting elements 1a to 1d are overlapped and joined.

  Of the first to fourth connecting elements 1a to 1d, the first and fourth connecting elements 1a and 1d have different diameters, and the maximum outer diameter of the first connecting element 1a is the fourth connecting element 1d. Less than or equal to the minimum inner diameter of In the illustrated example, their maximum outer diameter and minimum inner diameter are equal. Accordingly, when the first and fourth connecting elements 1a and 1d are arranged concentrically, the fourth connecting element 1d circumscribes the first connecting element 1a.

  On the outer peripheral side of the first connecting element 1a and the inner peripheral side of the fourth connecting element 1d, there are positive and negative gradients 3a and 3d with respect to the radial direction. Due to the gradients 3a and 3d, ridges are formed in the circumferential direction on the outer peripheral side of the first connecting element 1a and the inner peripheral side of the fourth connecting element 1d. When the first and fourth connecting elements 1a and 1d are overlapped in the radial direction, the ridges formed by the positive and negative gradients 3a and 3d are opposed to each other as shown in FIG. And matched. In this assembled state, a groove-like portion, that is, a V-shaped concave surface is formed in the circumferential direction in FIG. 4 by the gradients 3a and 3d of the first and fourth connecting elements 1a and 1d.

  On the other hand, the diameters of the second and third connecting elements 1b and 1c are the same, the inner diameter thereof is smaller than the maximum outer diameter of the first connecting element 1a, and the outer diameter thereof is the fourth connecting element 1d. Greater than the minimum inner diameter of The second and third connecting elements 1b and 1c are formed with joint surfaces 3c and 3d having positive and negative gradients. Due to the joint surfaces 3c and 3d having these positive and negative gradients, the second and third coupling elements 1b and 1c are formed with ridge-like convex surfaces in the circumferential direction.

  The gradients of the joint surfaces 3c and 3d of the second and third coupling elements 1b and 1c correspond to the gradients of the joint surfaces 3a and 3d of the first and fourth coupling elements 1a and 1d. Therefore, as shown in FIG. 4, the first connecting element 1a is overlapped with the fourth connecting element 1d so as to circumscribe, and the first and fourth connecting elements 1a, 1d are sandwiched therebetween. And the third connecting elements 1b and 1c are arranged so as to face each other, and the ridge-shaped portions formed by the joint surfaces 3c and 3d of the second and third connecting elements 1b and 1c are first and fourth. The connecting elements 1a and 1d can be fitted into groove-shaped portions formed by the inclined surfaces 3a and 3d. At this time, the joint surfaces 3c, 3d of the second and third coupling elements 1b, 1c are in surface contact with the gradient surfaces 3a, 3d of the first and fourth coupling elements 1a, 1d in an airtight manner.

  The first and fourth connecting elements 1a, 1d are provided with a plurality of holes 9a, 9d at equal angular intervals in the circumferential direction in parallel with the central axis. The shafts 5 and 5 are inserted into the holes 9a and 9d, and stoppers 6 and 6 are attached to both ends of the shafts 5 and 5, respectively. The stoppers 6 and 6 are metal plate-like whose side surfaces are bent in a crank shape, and a hole through which the shafts 5 and 5 are passed is provided on the base end side.

  The base end portions of the stoppers 6 and 6 are rotatably fitted to both ends of the shafts 5 and 5 inserted into the holes 9a and 9d, the coil springs 8 and 8 are fitted to the outside thereof, and the retaining flange is further provided to the outside thereof. 7 and 7 are attached. The coil springs 8 and 8 are inserted between the stoppers 6 and 6 and the retaining flanges 7 and 7 in a state in which the coil springs 8 and 8 are compressed in advance and applied with an initial stress. The reaction force is obtained from the pressure acting on the stoppers 6 and 6. The distal ends of the stoppers 6 and 6 abut against the first to fourth coupling elements 1a to 1d by the elasticity of the coil springs 8 and 8.

  As already described, as shown in FIGS. 1 to 3, the first to fourth connecting elements 1 a to 1 d are arranged so as to be shifted in the direction of their central axes indicated by the one-dot chain line in FIG. 1. As shown in FIG. 4, the first to fourth connecting elements 1a to 1d can be overlapped and joined. In this state, the fourth connecting element 1d is circumscribed on the outside of the first connecting element 1a. Further, the groove-shaped portion formed by the sloped surfaces 3a and 3d of the first and fourth connecting elements 1a and 1d that are inscribed and circumscribed by the joint surfaces 3c and 3d of the second and third connecting elements 1b and 1c. The ridge-shaped part to be formed is fitted.

  In this state, the second and third connecting elements 1b and 1c move up and down in FIG. 4 respectively, and if the first and fourth connecting elements 1a and 1d are not disengaged, these four connecting elements are connected. Elements 1a-1d cannot be separated. That is, the front ends of the stoppers 6 and 6 are brought into contact with the second and third connecting elements 1b and 1c, and are held so as not to be detached from the first and fourth connecting elements 1a and 1d. It can hold | maintain so that the connection state of the four connection elements 1a-4d may not remove | deviate. Thus, the stoppers 6 and 6 attached to the shafts 5 and 5 provided on the first and fourth connecting elements 1a and 1d are connected to the second and third connecting elements 1a and 1d, respectively. It has a function as a holding means for holding the connecting elements 1b and 1c.

  In order to separate the second and third connecting elements 1b and 1c from the first and fourth connecting elements 1a and 1d from this state, the stoppers 6 and 6 are rotated about the shafts 5 and 5 as shown in FIG. As shown, the tip may be removed from the second and third coupling elements 1b, 1c. Thereby, the 2nd and 3rd connection elements 1b and 1c can be extracted from the 1st and 4th connection elements 1a and 1d. In this state, as shown in FIG. 3, the first and fourth connecting elements 1a and 1d can be separated from each other. The stoppers 6 and 6 are attached to both ends of the shafts 5 and 5 provided in the first and fourth connecting elements 1a and 1d, respectively, and come into contact with the second and third connecting elements 1b and 1c, respectively. Both the second and third connecting elements 1b and 1c can be held or separated and only one of them can be held or separated by rotating the stoppers 6 and 6 with respect to the shafts 5 and 5.

  5 to 7 show an example in which such a partition connection / separation mechanism is applied to a contamination protective clothing entering / exiting mechanism. As for the partition walls 2a-2d, the edge parts 10a-10d of the opening are airtightly attached to the annular coupling elements 1a-1d, respectively. The partition wall 2a provided on the first connection element 1a forms the head of the pollution protection suit, and the partition wall 2c provided on the third connection element 1c serves as the trunk, arms and legs of the pollution protection suit. Forming. The partition wall 2b provided in the second connection element 1b forms a partition wall provided outside the head of the pollution protective clothing, and the partition wall 2d provided in the fourth connection element 1d includes the contamination space C and the non-contamination space D. The partition wall which partitions off is formed. Here, the contaminated spaces are B and C, and the non-contaminated spaces are A and D.

  FIG. 5 shows that the first and fourth connecting elements 1a and 1d are inscribed and circumscribed with each other, and the second and third connecting elements 1b and 1c are inscribed and circumscribed between the first and fourth connecting elements 1a and 1d. It is in the state where it is fitted. In this state, the spaces A to D are airtightly partitioned by the partition walls 2a to 2d. When the tips of the stoppers 6 and 6 at both ends of the shafts 5 and 5 provided on the first and fourth connecting elements 1a and 1d are brought into contact with the second and third connecting elements 1b and 1c, the first to the first The four connecting elements 1a to 1d are fixed to each other and do not separate.

  FIG. 6 shows a state where the first and fourth connecting elements 1a and 1d are separated with the second and third connecting elements 1b and 1c, respectively. In this state, spaces A and D, which are non-polluting spaces, communicate with each other, but spaces B and C, which are contaminated spaces, are airtightly separated from other spaces. At this time, the distal end portion of one stopper 6 of the first coupling element 1a is brought into contact with the second coupling element 1b, and the distal end portion of one stopper 6 of the fourth coupling element 1d is brought into contact with the third coupling element 1c. When abutting, the first connecting element 1a and the second connecting element 1b are fixed, and the fourth connecting element 1d and the third connecting element 1c are fixed. In this state, a person can go in and out of the partition walls 2a and 2c which are pollution protective clothing.

  FIG. 7 shows a state where the first and fourth connecting elements 1a and 1d are separated with the third and second connecting elements 1c and 1b, respectively. In this state, spaces A and D that are non-contaminated spaces are separated from each other in a closed state, and spaces B and C that are contaminated spaces communicate with each other. At this time, the tip of one stopper 6 of the first connecting element 1a is brought into contact with the third connecting element 1c, and the tip of one stopper 6 of the fourth connecting element 1d is made to be the second connecting element 1b. When abutting, the first connecting element 1a and the third connecting element 1c are fixed, and the fourth connecting element 1d and the second connecting element 1b are fixed. In this state, since the partition walls 2a and 2c, which are the pollution protection clothes, are separated from the partition walls 2b and 2d, the person can move and work in the contamination space C while a person is still in the pollution protection clothes.

  FIG. 8 shows another embodiment of the partition connection / separation mechanism. 1 to 7, the groove formed by the joint surfaces 3a and 3d of the first and fourth connecting elements 1a and 1d inscribed and inscribed has a V-shaped cross section. The ridges formed by the joint surfaces 3c and 3d of the second and third connecting elements 1b and 1c facing each other are also V-shaped in cross section. On the other hand, in the coupling / separating mechanism shown in FIG. 8, the groove formed by the joint surfaces 3a, 3d of the first and fourth coupling elements 1a, 1d that are inscribed and circumscribed has a trapezoidal cross section and is opposed to this The ridge-shaped portion formed by the joint surfaces 3c and 3d of the second and third connecting elements 1b and 1c is also trapezoidal in cross section. As described above, the cross-sectional shapes of the bonding surfaces 3a to 3d can be changed as long as the function that enables bonding while maintaining airtightness is not lost. For example, it may be a curved slope surface. The other part of the embodiment shown in FIG. 8 is the same as the above-described partition wall connecting / separating mechanism described with reference to FIGS. 1 to 7, and the same part is indicated by the same reference numeral.

  FIG. 9 shows another embodiment of the partition connection / separation mechanism. In the above-described partition wall connecting / separating mechanism described with reference to FIGS. 1 to 7, a groove having a concave cross section is formed by the joint surfaces 3 a, 3 d of the first and fourth connecting elements 1 a, 1 d inscribed and inscribed. What is formed by the joint surfaces 3c and 3d of the second and third connecting elements 1b and 1c opposite to each other is a ridge-shaped portion having a convex cross section. On the other hand, in the connection / separation mechanism shown in FIG. 9, a ridge-shaped portion having a convex cross section is formed by the joint surfaces 3a and 3d of the first and fourth connection elements 1a and 1d that are inscribed and circumscribed, and is opposed to this. A V-shaped groove having a concave cross section is formed by the joint surfaces 3c and 3d of the second and third connecting elements 1b and 1c. Other parts of the embodiment shown in FIG. 9 are the same as those of the above-described partition wall connecting / separating mechanism described with reference to FIGS. 1 to 7, and the same parts are indicated by the same reference numerals.

  The partition connection / separation mechanism according to the present invention can block and connect a plurality of airtight spaces with a simple operation, so that it enters and leaves a space that is not contaminated with radioactivity surrounded by a space contaminated with radioactivity, Alternatively, it can be used as a connection / separation mechanism for the purpose of entering and exiting protective clothing for the purpose of working in a radioactively contaminated space.

A to D Spaces 1a to 1d Connecting elements 2a to 2d Partition walls 3a to 3d Joining surfaces 5 of connecting elements Holding shaft 6 Holding means stoppers 10a to 10d Edges of the opening of the partition

Claims (3)

In the connection / separation mechanism for airtightly connecting / separating the edges (10a) to (10d) of the plurality of partition walls (2a) to (2d) for forming the spaces (A) to (D), the partition walls (2a) to (2a) The first and fourth annular coupling elements (1a) to (1d) having the edge portions (10a) to (10d) of (2d) fixed, and arranged on the inner side and the outer side of the ring. The four connecting elements (1a) and (1d) are formed with joint surfaces (3a) and (3d) having positive and negative gradients on the outer peripheral side and the inner peripheral side facing each other in the circumferential direction. The second and third connecting elements (1b) and (1c) arranged to face each other with the connecting elements (1a) and (1d) interposed therebetween are the first and fourth connecting elements (1a) and (1d). joint surface of) (3a), (joint surface of positive and negative slope joining hermetically 3d) (3b), over the circumferential direction (3c) form The second and third coupling elements (1b) are joined by joining surfaces (3a), (3d), (3b), (3c) to the first and fourth coupling elements (1a), (1d). ), (1c) A pair of stoppers (6), (6) that respectively hold and hold the shafts (5), (5) through which the first and fourth connecting elements (1a), (1d) pass. A partition connection / separation mechanism characterized in that it is rotatably provided at both ends of the partition wall. The joint surfaces (3b) and (3c) of the second and third connecting elements (1b) and (1c) are the joint surfaces of the first and fourth connecting elements (1a) and (1d) inscribed and inscribed ( The partition wall connecting / separating mechanism according to claim 1, wherein the partition wall connecting / separating mechanism is fitted between 3a) and (3d). The joint surfaces (3b) and (3c) of the second and third connecting elements (1b) and (1c) are the joint surfaces of the first and fourth connecting elements (1a) and (1d) inscribed and inscribed ( The partition connection / separation mechanism according to claim 1, wherein 3a) and (3d) are sandwiched therebetween.

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