EP2877776A1

EP2877776A1 - Transport container for cryogenic fluids

Info

Publication number: EP2877776A1
Application number: EP13740212.9A
Authority: EP
Inventors: Christian INTERWIES
Original assignee: Ziemann International GmbH
Current assignee: Ziemann Holvrieka GmbH
Priority date: 2012-07-25
Filing date: 2013-07-22
Publication date: 2015-06-03
Anticipated expiration: 2033-07-22
Also published as: DE102012014709A1; EP2877776B1; WO2014015969A1

Abstract

Special transport containers which are designed with double walls and which have an outer container with a cylindrical main body and two end walls in which a similarly designed inner container is accommodated are used for the transportation of cryogenic fluids. A holder is arranged at each end of the inner container. The first holder is designed to be rigid and is connected to the adjacent end wall of the outer container. The second holder has two holding parts by means of which the two end walls can be displaced relative to one another in the axial direction. The one movable holding part is formed by a cylindrical spigot which is retained by a hollow cylindrical profile element. Since the spigot shrinks, even in diameter, because of the low temperature of the inner container, the surfaces in mutual contact practically reduce to a very narrow section of the circumferential surfaces. This results in a very high surface contact pressure and high wear on the surfaces in contact because of the horizontal accelerations occurring during transport. This problem is solved in that the first holding part (31) of the movable holder (22) has two flat contact surfaces (33; 34) which interact with two flat bearing surfaces (36; 37) of the second holding part (32), which bearing surfaces are arranged in a V-shape and are aligned symmetrically to the vertical plane (35) of the longitudinal axis (19). Even when the second holding part (32) shrinks, the surfaces in contact retain their flat form, and thereby a low surface contact pressure and low wear is ensured.

Description

Transport container for cryogenic fluids

For the transport of cryogenic fluids are special

Transport container used. They are double-walled and have an outer container with a cylindrical single-walled main body and two outwardly curved single-walled end walls, in which an inner container is housed, which is similar in shape and has slightly smaller dimensions (US 5,533,340). At each end of the inner container, a respective holding device is arranged, which are arranged coaxially to the longitudinal axis of the outer container and the inner container. Each holding device is connected on the one hand to the adjacent end wall of the outer container and on the other hand to the adjacent end wall of the inner container. The first holding device is formed in one piece and rigid. The second holding device has two holding parts, by means of which the two end walls are displaceable relative to each other in the axial direction in order to compensate for the change in length of the inner container relative to the outer container due to the lower temperature of the fluid.

At the end of the transport container with the rigid first holding device, at least one inflow line and a discharge line for the fluid itself and for a coolant for the fluid are connected to the inner container. On the outer container, a connecting line is connected to an evacuation device, by means of which the space between the outer container and the

Inner container can be evacuated to provide thermal insulation for the inner container.

In the second holding device, the first holding part is formed as a continuous hollow profile, which by a Circular cylinder is flattened at the top side. The second holding part is formed by a pin which is matched to the hollow profile of the first holding part. The flattening of the Kreiszylin- form of both holding parts to form a rotation between the outer container and the inner container.

In this design of the second holding device is not taken into account that at low operating temperature of the inner container this shrinks not only in length by up to 50 mm but that also shrinks the diameter of the pin, which serves as a second holding part. This affects in two ways. The shrunken pin is theoretically only along a Zylindermantellin, practically, due to the elastic deformation of the parts, in the range of a very narrow peripheral region on the cylindrical hollow profile. This results in a correspondingly high surface pressure. In any case, this is so high that a greater wear of the contact surfaces is inevitable in the frequently anticipated lateral accelerations. In addition, the shrunken pin no longer rests in the horizontal direction on the two inner walls of the cylindrical hollow profile. Therefore, the pin performs at each lateral acceleration of the transport container a relative movement relative to the cylindrical hollow profile, which in combination with the already greatly reduced contact area in addition to an even higher wear of both the pin as well as the hollow profile contributes. This limits the longest possible service life of the transport container very strong. The invention has for its object to provide a transport container for cryogenic fluids, in which di dimensional changes of the inner container due to its reduced temperature less adversely affect the contact surfaces of the second holding device than is the case with the known transport container This object is achieved by a Transport container solved with the features specified in claim 1. Characterized in that the contact surfaces of the first holding part and the cooperating abutment surfaces of the second holding part are flat and are arranged symmetrically to the vertical plane of the longitudinal axes of the outer container and the inner container V-shaped, retain these contact surfaces even with a dimensional changes of the inner container their planar shape and their V-shaped arrangement, so that the mutual full-surface investment and thus the relatively low surface pressure of these contact surfaces is always maintained. During a temperature-induced shrinkage or expansion of the inner container, the abutment surfaces of the second holding part only move parallel to the abutment surfaces of the first holding part, both in the axial direction and in the direction of the legs of the V-shape of the contact surfaces.

The fact that the contact surfaces are arranged in a V-shape, they can both the weight of the inner container and vertical downward acceleration forces as well as horizontal acceleration forces absorb equally well, without causing relative movements of the two holding parts occur.

Characterized in that the contact surfaces of the first holding part in the axial direction have a longitudinal extent, at least approximately equal to the sum of the axial length de Bearing surfaces of the second holding part and from the difference of the axial length of the inner container at ambient temperature and at operating temperature, it is ensured that the contact surfaces of the second holding part always fully abut the contact surfaces of the first holding part, so that in so far the surface pressure of the contact surfaces remains the same and relatively low. All these measures ensure that the wear of the contact surfaces remains relatively low over a longer period of time.

An embodiment of the transport container according to claim 2 ensures that the second holding device can also absorb vertically upward acceleration forces that exceed the simple gravitational acceleration. Due to the fact that the two contact surfaces and the two further contact surfaces as well as the second holding part are firmly connected to one another in the manner of a quadrilateral frame both in the case of the first holding part, both the abutment surfaces and the two other contact surfaces are firmly connected to one another second holding part stiffened and strengthened. That comes the dimensional stability of all levels

Berührunsflächen benefit and contributes to a further reduction in wear.

By an embodiment of the transport container according to claim 3, the second holding device can be easily adjusted to different operating conditions. With a larger angle of inclination and a corresponding larger spread angle ß higher vertical forces can be absorbed. With a smaller inclination angle α and a corresponding smaller spread angle β larger horizontal forces can be absorbed. In one embodiment of the transport container after

Claim 4, the holding parts are easier and more accurate to manufacture. In this embodiment, there is an average value for the capacity of vertical forces and horizontal forces.

In one embodiment of the transport container after

Claim 5, the part of the holding device located above the longitudinal axis can also be easily adjusted to other requirements with regard to the capacity of vertical forces and horizontal forces, as is the case with the underlying part of the holding device.

An embodiment of the transport container according to claim 6 facilitates the manufacture and assembly of the entire holding device and achieves an average suitability for receiving vertical forces and horizontal forces.

An embodiment of the transport container according to claim 7 ensures that the second holding device is designed to save space.

In one embodiment of the transport container after

Claim 8, the wear in particular of the arranged below the longitudinal axis of contact surfaces can be significantly reduced not only in a temperature-induced shrinkage or expansion of the inner container but also in the different acceleration forces occurring.

In one embodiment of the transport container after

Claim 9, the heat transfer is reduced to the inner container. In one embodiment of the transport container after

Claim 10, the sliding element also very small

Endure temperatures of the inner container, without noticeably reducing its good lubricity. By receiving the sliding elements in each. a matched to them recess of the second holding part ensures that the sliding elements are not displaced under lateral load when the inner container a temperature change and corresponding dimensional changes occur or when frictional forces act as a result of acceleration forces laterally on the sliding elements. A development according to claim 11 facilitates the assembly of the sliding elements and the assembly of the second holding device and the transport container as a whole.

In the following, the invention is based on a in the

Drawing illustrated embodiment of the transport container explained in more detail. Show it:

Figure 1 is a perspective view of the transport container with an outer container and an inner container housed therein.

2 shows a longitudinal section of the transport container through the longitudinal axis of the two containers, without the usual installations of the inner container and without the usual lines.

FIG. 3 shows a detail enlargement according to the section line A in FIG. 2; FIG.

FIG. 4 shows a detail enlargement according to the sectioning line B in FIG. 2; FIG.

5 shows a cross section of the transport container according to the section line D - D in FIG. 2 and FIG. 7;

Fig. 6 is a detail enlargement of Fig. 5;

FIG. 6a shows a first partial cutout from FIG. 6; FIG.

FIG. 6b shows a second partial cutout from FIG. 6; FIG. 7 shows a detail enlargement according to the section line C in FIG. 2 and according to the section line E - E in FIG. 5;

8 shows a detail enlargement according to the sectioning line C in FIG. 2 and according to the section line F - F in FIG. 5;

9 shows a detail enlargement according to the section line G in FIG. 7. The transport container 10 is shown as a whole in FIG. Its basic structure can be seen from Fig. 2. In it, however, the better overview because of the usual fittings and lines are not shown. The transport container 10 has an outer container 11 and an inner container 12, which are arranged coaxially with each other. The outer container 11 has a cylindrical single-walled main body 13 and two outwardly curved single-walled end walls 14 and 15, which are firmly welded together. The inner container 12 also has a cylindrical single-walled main body 16 and two outwardly curved single-walled end walls 17 and 18, which are firmly welded together. The outer container 11 and the inner container 12 have a common longitudinal axis 19th

Between the one end wall 14 of the outer container 11 and the adjacent end wall 17 of the inner container 12, a first holding device 21 is present, which is arranged coaxially to the longitudinal axis 19. This first holding device 21 is firmly welded both to the end wall 14 of the outer container 11 and to the end wall 17 of the inner container 12 (FIG. 4). By means of this first holding device 21, the two containers 11 and 12 are fixedly connected together at this end.

Between the other end wall 15 of the outer container 11 and the adjacent end wall 18 of the inner container 12, a second holding device 22 is present, which is also arranged coaxially to the longitudinal axis 19.

The second holding device 22 has two holding parts, which are designed and arranged such that the two end walls 15 and 18 are displaceable in the axial direction relative to each other. They are described in greater detail with reference to FIGS. 5 to 9. The first holding device 21 forms virtually a fixed bearing for the two containers 11 and 12 and the second holding device 22 forms quasi a movable bearing for the two containers 11 and 12. As can be seen both in Fig. 1 as well as in Fig. 2, the Base body 13 of the outer container 11 is provided on its outside with a helical reinforcement 23. It is formed by a hollow profile 24 which is open toward the base body 13 (FIG. 3), whose edges 25 are welded continuously to the base body 13, with adjacent spiral sections having a predetermined mutual distance. This reinforcement 23 serves on the one hand to prevent buckling of the cylindrical Grundköpers 13 of the outer container 11 when the space between the outer container 11 and the inner container 12 is evacuated to thermally insulate the inner container 11 relative to the outer container 12. On the other hand, it serves the purpose of a leak of the

Inner container 12 occurring pressure increase in the outer container 11 to catch. By the outside reinforcement 23 can be avoided on the inside of the outer container 11 arranged reinforcements and thereby a larger interior can be achieved.

4, the first holding device 21 is formed mainly by a cylindrical holding tube 26, which is welded on the one hand to the outside of the end wall 17 of the inner container 12 and on the other hand with the end wall 14 of the outer container 11.

In order to facilitate the production of the end wall 14 is cut out in the alignment line of the cylindrical holding tube 26 circular and inserted through the resulting cutout 27, the holding tube 26 and welded on the outside with the adjoining the cutout 27 end wall 14. On the inside of the holding tube 26, a closure plate 28 is used, which has the same thickness and curvature as the end wall 14, and with the inside of the

Retaining tube 26 welded, whereby the end wall 14 is completed again.

In the region of the holding device 21, an insulating material 29 is applied and fixed on the outer side of the end wall 14 in order to minimize the unavoidable heat transfer.

From Fig. 5 it can be seen that the holding device 22 is not cylindrical, as in the prior art, but quadrangular. It has in the preferred embodiment the shape of a square placed on top. The second holding device 22 has an outer first holding part 31 (FIG. 6 a) and an inner second holding part 31. Part 32 (Fig. 6b), which are arranged coaxially with each other in the same axial region of the transport container 10 (Fig. 6). The inner contour of the outer holding part 31 and the outer contour of the inner holding part 32 are coordinated so that at room temperature of the outer container 11 and the inner container 12, the two holding parts 31 and 32 can be assembled without difficulty and at any time in the axial direction relative to each other are displaceable.

The first holding part 31 (FIG. 6 a) has two flat abutment surfaces 33 and 34 which are located below the longitudinal axis 19, which are aligned parallel to the longitudinal axis 19 and face the longitudinal axis 19, which have a predetermined inclination angle α of one another Include 90 ° and are aligned symmetrically to the vertical plane 35 of the longitudinal axis 19.

The second holding part 32 (FIG. 6b) has, in a corresponding manner, two planar abutment surfaces 36 and 37 which are located below the longitudinal axis 19 of the inner container 12, which are aligned parallel to the longitudinal axis 19 and remote from the longitudinal axis 19 Contradictive angle to the inclination angle α have a spread angle ß, equal to the extended by 180 ° angle of inclination

Bearing surfaces 34 and 35 of the first holding part 31, and which are aligned symmetrically to the vertical plane 35 of the longitudinal axis 19.

The contact surfaces 33 and 34 are formed by the true outside of a retaining strip 41 and 42, respectively. The abutment surfaces 36 and 37 are formed by the true outside of a retaining strip 43 and 44, respectively. By means of these retaining strips 41 and 42 with their contact surface 33 or 34 of the first holding part 31 and by means of the retaining strips 43 and 44 with the abutment surface 36 and 37 of the second holding part 32, both acting on the second holding device 22 weight of the inner container 12 as well occurring during transport movements vertically downwardly directed and horizontally oriented acceleration forces of the inner container 12 are received by the first holding part 31.

Because it can not be ruled out in difficult transport conditions by land or sea that can act on the inner container 12 vertically upward acceleration forces that exceed its weight, is expediently above the longitudinal axis 19 both the first holding member 31 with two other contact surfaces 45 and 46 as well as the second

Holding member 32 is provided with two other abutment surfaces 47 and 48, of which the abutment surfaces 45 and 46 of the

Longitudinal axis 19 are facing and of which

Bearing surfaces 47 and 48 facing away from the longitudinal axis 19. The two other contact surfaces 45 and 46 close to each other an inclination angle γ, which is equal to the inclination angle α of the contact surfaces 33 and 34. The two other abutment surfaces 47 and 48 have a

Spread angle δ, which is equal to the extended by 180 ° angle of inclination γ of the other contact surfaces 45 and 46. The vertical projections of the other contact surfaces 45 and 46 and the other abutment surfaces 47 and 48 are aligned in pairs. The others

Contact surfaces 45 and 46 and the other abutment surfaces 47 and 48 are aligned symmetrically to the vertical plane 35 of the longitudinal axis 19. The other contact surfaces 45 and 46 are by the true outside of a retaining strip 51 and 52, respectively educated. The other abutment surfaces 47 and 48 are formed by the true outside of a retaining strip 53 and 54, respectively. In the first holding part 31, the retaining strips 41 and 42 and the retaining strips 51 and 52 are welded together, so that they form a rigid outer square frame 55. When the second holding part 32, the retaining strips 43 and 44 and the retaining strips 53 and 54 are welded together, so that they form a rigid inner square frame 56.

Because the angle of inclination γ of the other contact surfaces 45 and 46 is equal to the angle of inclination α of the abutment surfaces 33 and 34 and the spread angle δ of the further abutment surfaces 47 and 48 is equal to the spread angle β of the abutment surfaces 36 and 37, the result is shown in FIG 6, Fig. 6a and Fig. 6b shown exact square shape of the holding parts 31 and 32nd

The construction of the holding parts 31 and 32 is shown in detail in FIGS. 7 to 9.

The quadrilateral frame 55 of the first holding part 31 has on the side remote from the end wall 17 of the outer container 11 a flat boundary surface or end face 57 (FIG. 7), which is aligned normal to the longitudinal axis 19. On the end wall 17 side facing the boundary surface of the square frame 55 is tuned to the concave inner side of the end wall 17 of the outer container 11. The square frame 56 of the second holding part 32 has on the side remote from the end wall 18 of the inner container 12 side a flat boundary surface or end face 58, which is aligned normal to the longitudinal axis 19. On the side facing the end wall 18, the boundary surface of the quadrilateral frame 56 matched to the convex outside of the end wall of the inner container 12.

The quadrilateral frame 55 of the first holding part 31 is welded on its outside with a stiffening ring 61 which reinforces the quadrangular frame 55 at the same time and whose ground plan has the shape of a quadrangular ring (FIG. 6 a). Similarly, the square frame 56 of the second support member 32 is welded on its inside with a stiffening plate 62 (Fig. 6b), which reinforces the square frame 56 at the same time and whose floor plan has the shape of a square whose corners are cut off for welding reasons. The stiffening ring 61 is arranged in the region of the free end of the outer square frame 55 (FIG. 8). The stiffening disk 62 is arranged in the region of the free end of the inner square frame 56 (FIG. 7).

On the outer square frame 55 is also in the middle of its longitudinal sides depending a plate-shaped strut 63 is welded (Fig. 6a), which is also welded to the inside of the end wall 17 of the outer container 11 (Fig. 7). The end wall 14 of the outer container 11 (FIG. 4) has, in order to increase its rigidity in the region of the first holding device 21, a central surface section 64 whose wall thickness is greater than that of the surface section 65 surrounding it. In the same way, the end wall 17 of the inner container 12 has a central

Surface portion 66 whose wall thickness is greater than that of the surface portion 67 surrounding it. in the

In the area of the second holding device 22 (FIG. 8), the end wall 15 of the outer container 11 has a central one

Surface portion 68, the wall thickness is greater than that of the surrounding surface portion 69. The Front wall 18 of the inner container 12 has a central surface portion 71, whose wall thickness is greater than that of the surrounding surface portion 72. All these measures ensure that the level

Contact surfaces and abutment surfaces of the two holding devices 21 and 22 remain largely flat even under load and allow a uniform load distribution at the contact surfaces.

As indicated in FIG. 7 and clearly visible in FIG. 9, a sliding element 73 is arranged on the outer side of the retaining strips 43, 44, 53 and 54 of the inner quadrilateral frame 56. The sliding elements 73 are made of tetrafluoroethylene, are plate-shaped and have a rectangular plan. Each sliding element 73 is inserted into a recess 74, which is matched to its plan view, on the side edges 75 of which the sliding element 73 rests. In addition, the sliding elements 73 are screwed with at least two countersunk screws 76 with the associated retaining strip, which are provided with corresponding threaded holes 77.

This embodiment of the transport container 10, in which all the retaining strips of the inner square frame 56 are provided with a sliding member 73, is especially in difficult transport conditions into consideration, in which strong horizontal acceleration forces are superimposed by equally strong vertically upward acceleration forces, so that the inner square frame 56 abuts against the above the longitudinal axis 19 arranged bearing surfaces 45 and 46 of the outer square frame 55 and the sliding elements abutting 73 of the abutment surfaces 47 and 48 slide along it. In less difficult transport conditions, an embodiment not shown in the drawing can be used are, in which only the arranged below the longitudinal axis 19 abutment surfaces 36 and 37 of the inner square frame 56 are provided with a sliding member 73. As shown in Fig. 1 and Fig. 2, a number of support plates 78 are welded to the end walls 14 and 15 of the outer container 11, by means of the transport container 10, each with a support frame 79 with standardized

Dimensions is firmly connected.

LIST OF REFERENCE NUMBERS

10 transport containers

11 outer container

12 inner containers

13 basic body

14 front wall

15 front wall

16 basic body

17 front wall

18 front wall

19 longitudinal axis

21 first holding device

22 second holding device

23 reinforcement

24 hollow profile

25 margins

26 holding tube

27 section

28 closure plate

29 insulating mat

31 first holding part

32 second holding part

33 contact surfaces

34 contact surfaces

35 vertical plane

36 contact surfaces

37 berths

41 retaining strip

42 retaining strip

43 retaining strip

44 retaining strip

45 additional contact area

46 additional contact area

47 additional berth

48 additional berth

51 retaining strip

52 retaining strip

53 retaining strip

54 retaining strip

55 square frames

56 square frames

57 face

58 face

61 stiffening ring

62 stiffening disc

63 struts 64 central surface section

65 surrounding area section

66 central surface section

67 surrounding area section

68 central surface section

69 surrounding area section

71 central surface section

72 surrounding area section

73 sliding element

74 recesses

75 margins

76 countersunk screws

77 threaded holes

78 carrying plates

79 carrying frames

Claims

claims

1. Transport container for cryogenic fluids, with the Merk ^¬ paint:

- There is an outer container (11) with a cylindrical single-walled base body (13) and two outwardly curved single-walled end walls (14; 15) are provided, which are firmly welded together,

- There is an inner container (12) with a cylindrical single-walled base body (16) and two outwardly curved single-walled end walls (17; 18) are present, which are firmly welded together,

- Between the one end wall (14) of the outer container (11) and the adjacent end wall (17) of the inner container (12), a first holding device (21) is present,

- - which is arranged coaxially to the longitudinal axis (19) of the outer container (11) and the inner container (12),

by means of which the two end walls (14, 17) are rigidly connected to one another,

- between the other end wall (15) of the outer container (11) and the adjacent end wall (18) of the inner container (12) there is a second Haltevor- direction (22),

- - which is arranged coaxially with the longitudinal axis (19) of the outer container (11) and the inner container (12) and

- - The two holding parts (31, 32), by means of which the two end walls (15, 18) in the axial direction are displaceable relative to each other,

- The first holding part (31) is fixedly connected to the associated end wall (15) of the outer container (11) and the second holding part (32) is connected to the zuge- arranged end wall (18) of the inner container (12) firmly connected,

the inner container (12) is connected to at least one

Inflow pipe and at least one drain line for the fluid connected by its the first holding device (31) facing end wall (17), by the gap between the outer container (11) and the inner container (12) and by the first holding device (21) facing End wall (14) of the outer container (11) are guided,

to the space is connected to an evacuation line which is passed through the end wall of one of the holding devices (21, 22) of the outer container (11),

e c e n e c e n e s by the features:

the first holding part (31) has at least two planar contact surfaces (33; 34),

- which are aligned parallel to the longitudinal axis (19) of the outer container (11) and the longitudinal axis (19) of the outer container (11) facing,

- include a predetermined inclination angle (a) among each other,

- which are aligned symmetrically to the vertical plane (35) of the longitudinal axis (19),

the second holding part (32) has at least two flat abutment surfaces (36, 37),

- which are aligned parallel to the longitudinal axis (19) of the inner container (12) and facing away from the longitudinal axis (19) of the inner container (12), - - which have an angle of spread (β) with each other which is equal to the angle of inclination α of the contact surfaces (33; 34) of the first holding part (31) which is widened by 180 °,

- - which are aligned symmetrically to the vertical plane (35) of the longitudinal axis (19), and

- - which are arranged in the same axial region as the contact surfaces (33, 34) of the first holding part (31),

- The contact surfaces (33, 34) of the first holding part (31) have in the axial direction a longitudinal extent which is at least approximately equal to the sum of the axial length of the abutment surfaces (36, 37) of the second holding part (32) and from the difference of the axial Length of inner container (12) at ambient temperature and at operating temperature.

Transport container according to claim 1, having the features:

- The holding parts (31, 32) of the second holding device (22) have above the longitudinal axis (19) both two further contact surfaces (45, 46) as well as two further contact surfaces (47, 48),

- - of which the contact surfaces (45; 46) face the longitudinal axis (19) of the outer container (11) and from which the abutment surfaces (47; 48) are remote from the longitudinal axis (19) of the inner container (12),

- - of which the other contact surfaces (45, 46)

between them a predetermined angle of inclination γ and of which the further abutment surfaces (47, 48) have an angle of spread (δ) which is equal to the angle of inclination (γ) of the further abutment surfaces (45, 46) of the first holding part (31). is - which are aligned symmetrically to the vertical plane (35) of the longitudinal axis (19),

- The vertical projections in pairs at least approximately aligned with each other and

- which are firmly connected,

in the case of the first holding part (31) with the first two contact surfaces (33; 34) and with the two other contact surfaces (45; 46), the parts are firmly connected to one another in the manner of a quadrilateral frame (55), and

in the case of the second holding part (32) with the first two abutment surfaces (36, 37) and with the two other abutment surfaces (47, 48), the parts are firmly connected to one another in the manner of a quadrilateral frame (56).

3. Transport container according to claim 1 or 2, with the

Feature :

- The inclination angle () between the two contact surfaces (33; 34) of the first holding part (31) is in the range of 80 ° to 110 ° and

- The spread angle ß between the two abutment surfaces (36, 37) of the second holding part (32) is in the range of 260 ° to 290 °

4. Transport container according to claim 3, with the feature:

- The inclination angle (a) between the two contact surfaces (33; 34) of the first holding parts (31) is at least approximately equal to 90 ° and

- The spread angle ß between the two abutment surfaces (36, 37) of the second holding part (32) is at least approximately equal to 270 °. Transport container according to claim 2, with the feature:

- The inclination angle (γ) between the two other contact surfaces (45, 46) is in the range of 80 ° to 110 ° and

- The spread angle δ between the other two

Bearing surfaces (47; 48) of the second holding part (32) is in the range of 260 ° to 290 °.

Transport container according to claim 5, with the feature:

- The inclination angle (γ) between the two other contact surfaces (45; 46) is at least approximately equal to 90 ° and

- The spread angle (δ) between the two other abutment surfaces (47, 48) is at least approximately equal to 270 °.

Transport container according to claim 1 or 2, having the features:

- The first holding part (31) points to that of the

End wall (15) of the outer container (11) facing away from a flat boundary surface (57) which is aligned normal to the longitudinal axis (19) of the outer container (11),

- The first holding part (31) is adapted on the end wall (15) of the outer container (11) facing side on the inside,

- The second holding part (32) points to that of the

End wall (18) of the inner container (12) facing away from a flat boundary surface (58) which is aligned normal to the longitudinal axis (19) of the inner container (12),

- The second holding part (32) is adapted on the end wall (18) of the inner container (12) facing side on the outside thereof. Transport container according to one of claims 1 to 7, having the feature:

- At least between the associated Anla geflächen (33; 34) and abutment surfaces (36; 37) of the second holding device (22), which are arranged below the longitudinal axis (19), each a sliding element (67) is arranged.

9. Transport container according to claim 8, with the feature:

- The sliding elements (67) are made of a material with low thermal conductivity.

Transport container according to claim 8 or 9, having the features:

- The sliding elements (67) are made of tetrafluoroethylene and have a plate-like shape with a rectangular plan,

- The sliding elements (67) are inserted into the second holding part (32) in each one matched to them recess (68), wherein their outer sides of the abutment surfaces (36; 37; 47; 48) of the second holding part (32) form.

11. Transport container according to claim 10, with the feature:

- Each sliding member (67) is releasably connected to the associated first holding part, in particular screwed.